From 610f729799db8c5c347f9d7da2b3a534678fb0ea Mon Sep 17 00:00:00 2001
From: Andre Maroneze <andre.maroneze@cea.fr>
Date: Wed, 4 Sep 2024 16:57:00 +0200
Subject: [PATCH] [tests] remove excessively large libc oracles to avoid
 conflicts

---
 .../markdown-report/tests/sarif/cwe125.c      |     2 +-
 .../markdown-report/tests/sarif/libc.c        |     8 +-
 .../tests/sarif/oracle/libc.0.res.oracle      |     2 +-
 ...string.res.oracle => std_print.res.oracle} |     4 +-
 .../tests/sarif/oracle/std_print.sarif        |    46 +
 .../tests/sarif/oracle/std_string.sarif       | 31277 ----------------
 .../tests/sarif/oracle/with-libc.sarif        | 10882 ------
 .../tests/sarif/{std_string.c => std_print.c} |     5 +-
 tests/libc/fc_libc.c                          |     2 +-
 tests/libc/oracle/fc_libc.1.res.oracle        | 12422 ------
 10 files changed, 58 insertions(+), 54592 deletions(-)
 rename src/plugins/markdown-report/tests/sarif/oracle/{std_string.res.oracle => std_print.res.oracle} (90%)
 create mode 100644 src/plugins/markdown-report/tests/sarif/oracle/std_print.sarif
 delete mode 100644 src/plugins/markdown-report/tests/sarif/oracle/std_string.sarif
 delete mode 100644 src/plugins/markdown-report/tests/sarif/oracle/with-libc.sarif
 rename src/plugins/markdown-report/tests/sarif/{std_string.c => std_print.c} (65%)

diff --git a/src/plugins/markdown-report/tests/sarif/cwe125.c b/src/plugins/markdown-report/tests/sarif/cwe125.c
index c7914cbf5bc..b793122d269 100644
--- a/src/plugins/markdown-report/tests/sarif/cwe125.c
+++ b/src/plugins/markdown-report/tests/sarif/cwe125.c
@@ -3,7 +3,7 @@ NOFRAMAC: use execnow for proper sequencing of executions
 EXECNOW: BIN @PTEST_NAME@_parse.sav LOG @PTEST_NAME@.parse.log LOG @PTEST_NAME@.parse.err @frama-c@ @PTEST_FILE@ -save ./@PTEST_NAME@_parse.sav > ./@PTEST_NAME@.parse.log 2> ./@PTEST_NAME@.parse.err
 EXECNOW: BIN @PTEST_NAME@_eva.sav LOG @PTEST_NAME@.eva.log LOG @PTEST_NAME@.eva.err @frama-c@ -load %{dep:./@PTEST_NAME@_parse.sav} -eva -save ./@PTEST_NAME@_eva.sav > ./@PTEST_NAME@.eva.log 2> ./@PTEST_NAME@.eva.err
 EXECNOW: BIN @PTEST_NAME@.sarif.unfiltered LOG @PTEST_NAME@.sarif.log LOG @PTEST_NAME@.sarif.err @frama-c@ -load %{dep:./@PTEST_NAME@_eva.sav} -then -mdr-out ./@PTEST_NAME@.sarif.unfiltered -mdr-gen sarif -mdr-no-print-libc -mdr-sarif-deterministic > ./@PTEST_NAME@.sarif.log 2> ./@PTEST_NAME@.sarif.err
-EXECNOW: LOG @PTEST_NAME@.sarif sed -e "s:@PTEST_SESSION@:PTEST_SESSION:" %{dep:@PTEST_NAME@.sarif.unfiltered} > @PTEST_NAME@.sarif 2> @NULL
+EXECNOW: LOG @PTEST_NAME@.sarif sed -e "s:@PTEST_SESSION@:PTEST_SESSION:" %{dep:@PTEST_NAME@.sarif.unfiltered} > @PTEST_NAME@.sarif 2> @DEV_NULL@
 */
 #include "__fc_builtin.h"
 #define LENGTH 10
diff --git a/src/plugins/markdown-report/tests/sarif/libc.c b/src/plugins/markdown-report/tests/sarif/libc.c
index 0c78840e88d..3550f50831b 100644
--- a/src/plugins/markdown-report/tests/sarif/libc.c
+++ b/src/plugins/markdown-report/tests/sarif/libc.c
@@ -1,11 +1,11 @@
 /* run.config
  CMD: @frama-c@ -eva -eva-no-results -mdr-gen sarif -mdr-sarif-deterministic
- BIN: with-libc.sarif.unfiltered
-   OPT: -mdr-out ./with-libc.sarif.unfiltered
-   EXECNOW: LOG with-libc.sarif sed -e "s:@PTEST_SESSION@:PTEST_SESSION:" %{dep:with-libc.sarif.unfiltered} > with-libc.sarif 2> @NULL
+ BIN: with-libc.sarif.unchecked
+   OPT: -mdr-out ./with-libc.sarif.unchecked
+   COMMENT: the log with libc is too large, so we do not use it as textual oracle
  BIN: without-libc.sarif.unfiltered
    OPT: -mdr-no-print-libc -mdr-out ./without-libc.sarif.unfiltered
-   EXECNOW: LOG without-libc.sarif sed -e "s:@PTEST_SESSION@:PTEST_SESSION:" %{dep:without-libc.sarif.unfiltered} > without-libc.sarif 2> @NULL
+   EXECNOW: LOG without-libc.sarif sed -e "s:@PTEST_SESSION@:PTEST_SESSION:" %{dep:without-libc.sarif.unfiltered} > without-libc.sarif 2> @DEV_NULL@
 */
 #include <string.h>
 int main() {
diff --git a/src/plugins/markdown-report/tests/sarif/oracle/libc.0.res.oracle b/src/plugins/markdown-report/tests/sarif/oracle/libc.0.res.oracle
index f2cf411bea7..c26b13fdc40 100644
--- a/src/plugins/markdown-report/tests/sarif/oracle/libc.0.res.oracle
+++ b/src/plugins/markdown-report/tests/sarif/oracle/libc.0.res.oracle
@@ -17,4 +17,4 @@
     Preconditions     1 valid     0 unknown     0 invalid      1 total
   100% of the logical properties reached have been proven.
   ----------------------------------------------------------------------------
-[mdr] Report with-libc.sarif.unfiltered generated
+[mdr] Report with-libc.sarif.unchecked generated
diff --git a/src/plugins/markdown-report/tests/sarif/oracle/std_string.res.oracle b/src/plugins/markdown-report/tests/sarif/oracle/std_print.res.oracle
similarity index 90%
rename from src/plugins/markdown-report/tests/sarif/oracle/std_string.res.oracle
rename to src/plugins/markdown-report/tests/sarif/oracle/std_print.res.oracle
index a7d15fe69cd..0360be51bb6 100644
--- a/src/plugins/markdown-report/tests/sarif/oracle/std_string.res.oracle
+++ b/src/plugins/markdown-report/tests/sarif/oracle/std_print.res.oracle
@@ -1,4 +1,4 @@
-[kernel] Parsing std_string.c (with preprocessing)
+[kernel] Parsing std_print.c (with preprocessing)
 [eva] Analyzing a complete application starting at main
 [eva:initial-state] Values of globals at initialization
   
@@ -16,4 +16,4 @@
   ----------------------------------------------------------------------------
   No logical properties have been reached by the analysis.
   ----------------------------------------------------------------------------
-[mdr] Report std_string.sarif.unfiltered generated
+[mdr] Report std_print.sarif.unfiltered generated
diff --git a/src/plugins/markdown-report/tests/sarif/oracle/std_print.sarif b/src/plugins/markdown-report/tests/sarif/oracle/std_print.sarif
new file mode 100644
index 00000000000..be46e566c2b
--- /dev/null
+++ b/src/plugins/markdown-report/tests/sarif/oracle/std_print.sarif
@@ -0,0 +1,46 @@
+{
+  "$schema": "https://raw.githubusercontent.com/oasis-tcs/sarif-spec/master/Schemata/sarif-schema-2.1.0.json",
+  "version": "2.1.0",
+  "runs": [
+    {
+      "tool": {
+        "driver": {
+          "name": "frama-c",
+          "fullName": "frama-c-0+omitted-for-deterministic-output",
+          "version": "0+omitted-for-deterministic-output",
+          "downloadUri": "https://frama-c.com/download.html",
+          "informationUri": "https://frama-c.com"
+        }
+      },
+      "invocations": [
+        {
+          "commandLine": "frama-c -check -no-autoload-plugins -add-symbolic-path=PTEST_SESSION:. -load-plugin=eva,from,scope,inout,markdown-report std_print.c -eva -then -mdr-sarif-deterministic -mdr-gen sarif -mdr-out ./std_print.sarif.unfiltered",
+          "arguments": [
+            "-check", "-no-autoload-plugins",
+            "-add-symbolic-path=PTEST_SESSION:.",
+            "-load-plugin=eva,from,scope,inout,markdown-report",
+            "std_print.c", "-eva", "-then", "-mdr-sarif-deterministic",
+            "-mdr-gen", "sarif", "-mdr-out", "./std_print.sarif.unfiltered"
+          ],
+          "exitCode": 0,
+          "executionSuccessful": true
+        }
+      ],
+      "originalUriBaseIds": {
+        ".": { "uri": "file:///omitted-for-deterministic-output/" },
+        "PWD": { "uri": "file:///omitted-for-deterministic-output/" }
+      },
+      "artifacts": [
+        {
+          "location": { "uri": "std_print.c", "uriBaseId": "PWD" },
+          "roles": [ "analysisTarget" ],
+          "mimeType": "text/x-csrc"
+        }
+      ],
+      "defaultSourceLanguage": "C",
+      "taxonomies": [
+        { "name": "frama-c", "contents": [ "nonLocalizedData" ] }
+      ]
+    }
+  ]
+}
diff --git a/src/plugins/markdown-report/tests/sarif/oracle/std_string.sarif b/src/plugins/markdown-report/tests/sarif/oracle/std_string.sarif
deleted file mode 100644
index dc561a824dd..00000000000
--- a/src/plugins/markdown-report/tests/sarif/oracle/std_string.sarif
+++ /dev/null
@@ -1,31277 +0,0 @@
-{
-  "$schema": "https://raw.githubusercontent.com/oasis-tcs/sarif-spec/master/Schemata/sarif-schema-2.1.0.json",
-  "version": "2.1.0",
-  "runs": [
-    {
-      "tool": {
-        "driver": {
-          "name": "frama-c",
-          "fullName": "frama-c-0+omitted-for-deterministic-output",
-          "version": "0+omitted-for-deterministic-output",
-          "downloadUri": "https://frama-c.com/download.html",
-          "informationUri": "https://frama-c.com"
-        }
-      },
-      "invocations": [
-        {
-          "commandLine": "frama-c -check -no-autoload-plugins -add-symbolic-path=PTEST_SESSION:. -load-plugin=eva,from,scope,inout,markdown-report std_string.c -eva -then -mdr-sarif-deterministic -mdr-gen sarif -mdr-out ./std_string.sarif.unfiltered",
-          "arguments": [
-            "-check", "-no-autoload-plugins",
-            "-add-symbolic-path=PTEST_SESSION:.",
-            "-load-plugin=eva,from,scope,inout,markdown-report",
-            "std_string.c", "-eva", "-then", "-mdr-sarif-deterministic",
-            "-mdr-gen", "sarif", "-mdr-out", "./std_string.sarif.unfiltered"
-          ],
-          "exitCode": 0,
-          "executionSuccessful": true
-        }
-      ],
-      "originalUriBaseIds": {
-        ".": { "uri": "file:///omitted-for-deterministic-output/" },
-        "PWD": { "uri": "file:///omitted-for-deterministic-output/" }
-      },
-      "artifacts": [
-        {
-          "location": { "uri": "std_string.c", "uriBaseId": "PWD" },
-          "roles": [ "analysisTarget" ],
-          "mimeType": "text/x-csrc"
-        }
-      ],
-      "results": [
-        {
-          "ruleId": "user-spec",
-          "kind": "pass",
-          "level": "none",
-          "message": { "text": "MemChr." },
-          "locations": [
-            {
-              "physicalLocation": {
-                "artifactLocation": {
-                  "uri": "libc/__fc_string_axiomatic.h",
-                  "uriBaseId": "FRAMAC_SHARE"
-                },
-                "region": {
-                  "startLine": 57,
-                  "startColumn": 4,
-                  "endLine": 59,
-                  "endColumn": 62,
-                  "byteLength": 134
-                }
-              }
-            }
-          ]
-        },
-        {
-          "ruleId": "user-spec",
-          "kind": "pass",
-          "level": "none",
-          "message": { "text": "MemCmp." },
-          "locations": [
-            {
-              "physicalLocation": {
-                "artifactLocation": {
-                  "uri": "libc/__fc_string_axiomatic.h",
-                  "uriBaseId": "FRAMAC_SHARE"
-                },
-                "region": {
-                  "startLine": 39,
-                  "startColumn": 4,
-                  "endLine": 42,
-                  "endColumn": 70,
-                  "byteLength": 170
-                }
-              }
-            }
-          ]
-        },
-        {
-          "ruleId": "user-spec",
-          "kind": "pass",
-          "level": "none",
-          "message": { "text": "MemSet." },
-          "locations": [
-            {
-              "physicalLocation": {
-                "artifactLocation": {
-                  "uri": "libc/__fc_string_axiomatic.h",
-                  "uriBaseId": "FRAMAC_SHARE"
-                },
-                "region": {
-                  "startLine": 68,
-                  "startColumn": 4,
-                  "endLine": 70,
-                  "endColumn": 63,
-                  "byteLength": 135
-                }
-              }
-            }
-          ]
-        },
-        {
-          "ruleId": "user-spec",
-          "kind": "pass",
-          "level": "none",
-          "message": { "text": "StrChr." },
-          "locations": [
-            {
-              "physicalLocation": {
-                "artifactLocation": {
-                  "uri": "libc/__fc_string_axiomatic.h",
-                  "uriBaseId": "FRAMAC_SHARE"
-                },
-                "region": {
-                  "startLine": 168,
-                  "startColumn": 4,
-                  "endLine": 170,
-                  "endColumn": 75,
-                  "byteLength": 132
-                }
-              }
-            }
-          ]
-        },
-        {
-          "ruleId": "user-spec",
-          "kind": "pass",
-          "level": "none",
-          "message": { "text": "StrCmp." },
-          "locations": [
-            {
-              "physicalLocation": {
-                "artifactLocation": {
-                  "uri": "libc/__fc_string_axiomatic.h",
-                  "uriBaseId": "FRAMAC_SHARE"
-                },
-                "region": {
-                  "startLine": 143,
-                  "startColumn": 4,
-                  "endLine": 147,
-                  "endColumn": 63,
-                  "byteLength": 170
-                }
-              }
-            }
-          ]
-        },
-        {
-          "ruleId": "user-spec",
-          "kind": "pass",
-          "level": "none",
-          "message": { "text": "StrLen." },
-          "locations": [
-            {
-              "physicalLocation": {
-                "artifactLocation": {
-                  "uri": "libc/__fc_string_axiomatic.h",
-                  "uriBaseId": "FRAMAC_SHARE"
-                },
-                "region": {
-                  "startLine": 132,
-                  "startColumn": 4,
-                  "endLine": 135,
-                  "endColumn": 38,
-                  "byteLength": 185
-                }
-              }
-            }
-          ]
-        },
-        {
-          "ruleId": "user-spec",
-          "kind": "pass",
-          "level": "none",
-          "message": { "text": "StrNCmp." },
-          "locations": [
-            {
-              "physicalLocation": {
-                "artifactLocation": {
-                  "uri": "libc/__fc_string_axiomatic.h",
-                  "uriBaseId": "FRAMAC_SHARE"
-                },
-                "region": {
-                  "startLine": 155,
-                  "startColumn": 4,
-                  "endLine": 159,
-                  "endColumn": 53,
-                  "byteLength": 191
-                }
-              }
-            }
-          ]
-        },
-        {
-          "ruleId": "user-spec",
-          "kind": "pass",
-          "level": "none",
-          "message": { "text": "WMemChr." },
-          "locations": [
-            {
-              "physicalLocation": {
-                "artifactLocation": {
-                  "uri": "libc/__fc_string_axiomatic.h",
-                  "uriBaseId": "FRAMAC_SHARE"
-                },
-                "region": {
-                  "startLine": 183,
-                  "startColumn": 4,
-                  "endLine": 185,
-                  "endColumn": 63,
-                  "byteLength": 143
-                }
-              }
-            }
-          ]
-        },
-        {
-          "ruleId": "user-spec",
-          "kind": "pass",
-          "level": "none",
-          "message": { "text": "WcsChr." },
-          "locations": [
-            {
-              "physicalLocation": {
-                "artifactLocation": {
-                  "uri": "libc/__fc_string_axiomatic.h",
-                  "uriBaseId": "FRAMAC_SHARE"
-                },
-                "region": {
-                  "startLine": 266,
-                  "startColumn": 4,
-                  "endLine": 269,
-                  "endColumn": 29,
-                  "byteLength": 153
-                }
-              }
-            }
-          ]
-        },
-        {
-          "ruleId": "user-spec",
-          "kind": "pass",
-          "level": "none",
-          "message": { "text": "WcsCmp." },
-          "locations": [
-            {
-              "physicalLocation": {
-                "artifactLocation": {
-                  "uri": "libc/__fc_string_axiomatic.h",
-                  "uriBaseId": "FRAMAC_SHARE"
-                },
-                "region": {
-                  "startLine": 240,
-                  "startColumn": 4,
-                  "endLine": 244,
-                  "endColumn": 63,
-                  "byteLength": 173
-                }
-              }
-            }
-          ]
-        },
-        {
-          "ruleId": "user-spec",
-          "kind": "pass",
-          "level": "none",
-          "message": { "text": "WcsLen." },
-          "locations": [
-            {
-              "physicalLocation": {
-                "artifactLocation": {
-                  "uri": "libc/__fc_string_axiomatic.h",
-                  "uriBaseId": "FRAMAC_SHARE"
-                },
-                "region": {
-                  "startLine": 230,
-                  "startColumn": 4,
-                  "endLine": 232,
-                  "endColumn": 63,
-                  "byteLength": 147
-                }
-              }
-            }
-          ]
-        },
-        {
-          "ruleId": "user-spec",
-          "kind": "pass",
-          "level": "none",
-          "message": { "text": "WcsNCmp." },
-          "locations": [
-            {
-              "physicalLocation": {
-                "artifactLocation": {
-                  "uri": "libc/__fc_string_axiomatic.h",
-                  "uriBaseId": "FRAMAC_SHARE"
-                },
-                "region": {
-                  "startLine": 252,
-                  "startColumn": 4,
-                  "endLine": 256,
-                  "endColumn": 53,
-                  "byteLength": 194
-                }
-              }
-            }
-          ]
-        },
-        {
-          "ruleId": "user-spec",
-          "kind": "pass",
-          "level": "none",
-          "message": { "text": "dynamic_allocation." },
-          "locations": [
-            {
-              "physicalLocation": {
-                "artifactLocation": {
-                  "uri": "libc/__fc_alloc_axiomatic.h",
-                  "uriBaseId": "FRAMAC_SHARE"
-                },
-                "region": {
-                  "startLine": 39,
-                  "startColumn": 4,
-                  "endLine": 41,
-                  "endColumn": 61,
-                  "byteLength": 110
-                }
-              }
-            }
-          ]
-        },
-        {
-          "ruleId": "user-spec",
-          "kind": "pass",
-          "level": "none",
-          "message": { "text": "memchr_def." },
-          "locations": [
-            {
-              "physicalLocation": {
-                "artifactLocation": {
-                  "uri": "libc/__fc_string_axiomatic.h",
-                  "uriBaseId": "FRAMAC_SHARE"
-                },
-                "region": {
-                  "startLine": 57,
-                  "startColumn": 4,
-                  "endLine": 59,
-                  "endColumn": 62,
-                  "byteLength": 134
-                }
-              }
-            }
-          ]
-        },
-        {
-          "ruleId": "user-spec",
-          "kind": "pass",
-          "level": "none",
-          "message": { "text": "memcmp_strlen_left." },
-          "locations": [
-            {
-              "physicalLocation": {
-                "artifactLocation": {
-                  "uri": "libc/__fc_string_axiomatic.h",
-                  "uriBaseId": "FRAMAC_SHARE"
-                },
-                "region": {
-                  "startLine": 119,
-                  "startColumn": 4,
-                  "endLine": 121,
-                  "endColumn": 77,
-                  "byteLength": 148
-                }
-              }
-            }
-          ]
-        },
-        {
-          "ruleId": "user-spec",
-          "kind": "pass",
-          "level": "none",
-          "message": { "text": "memcmp_strlen_right." },
-          "locations": [
-            {
-              "physicalLocation": {
-                "artifactLocation": {
-                  "uri": "libc/__fc_string_axiomatic.h",
-                  "uriBaseId": "FRAMAC_SHARE"
-                },
-                "region": {
-                  "startLine": 123,
-                  "startColumn": 4,
-                  "endLine": 125,
-                  "endColumn": 77,
-                  "byteLength": 149
-                }
-              }
-            }
-          ]
-        },
-        {
-          "ruleId": "user-spec",
-          "kind": "pass",
-          "level": "none",
-          "message": { "text": "memcmp_strlen_shift_left." },
-          "locations": [
-            {
-              "physicalLocation": {
-                "artifactLocation": {
-                  "uri": "libc/__fc_string_axiomatic.h",
-                  "uriBaseId": "FRAMAC_SHARE"
-                },
-                "region": {
-                  "startLine": 127,
-                  "startColumn": 4,
-                  "endLine": 130,
-                  "endColumn": 38,
-                  "byteLength": 184
-                }
-              }
-            }
-          ]
-        },
-        {
-          "ruleId": "user-spec",
-          "kind": "pass",
-          "level": "none",
-          "message": { "text": "memcmp_strlen_shift_right." },
-          "locations": [
-            {
-              "physicalLocation": {
-                "artifactLocation": {
-                  "uri": "libc/__fc_string_axiomatic.h",
-                  "uriBaseId": "FRAMAC_SHARE"
-                },
-                "region": {
-                  "startLine": 132,
-                  "startColumn": 4,
-                  "endLine": 135,
-                  "endColumn": 38,
-                  "byteLength": 185
-                }
-              }
-            }
-          ]
-        },
-        {
-          "ruleId": "user-spec",
-          "kind": "pass",
-          "level": "none",
-          "message": { "text": "memcmp_zero." },
-          "locations": [
-            {
-              "physicalLocation": {
-                "artifactLocation": {
-                  "uri": "libc/__fc_string_axiomatic.h",
-                  "uriBaseId": "FRAMAC_SHARE"
-                },
-                "region": {
-                  "startLine": 39,
-                  "startColumn": 4,
-                  "endLine": 42,
-                  "endColumn": 70,
-                  "byteLength": 170
-                }
-              }
-            }
-          ]
-        },
-        {
-          "ruleId": "user-spec",
-          "kind": "pass",
-          "level": "none",
-          "message": { "text": "memset_def." },
-          "locations": [
-            {
-              "physicalLocation": {
-                "artifactLocation": {
-                  "uri": "libc/__fc_string_axiomatic.h",
-                  "uriBaseId": "FRAMAC_SHARE"
-                },
-                "region": {
-                  "startLine": 68,
-                  "startColumn": 4,
-                  "endLine": 70,
-                  "endColumn": 63,
-                  "byteLength": 135
-                }
-              }
-            }
-          ]
-        },
-        {
-          "ruleId": "user-spec",
-          "kind": "pass",
-          "level": "none",
-          "message": { "text": "never_allocable." },
-          "locations": [
-            {
-              "physicalLocation": {
-                "artifactLocation": {
-                  "uri": "libc/__fc_alloc_axiomatic.h",
-                  "uriBaseId": "FRAMAC_SHARE"
-                },
-                "region": {
-                  "startLine": 39,
-                  "startColumn": 4,
-                  "endLine": 41,
-                  "endColumn": 61,
-                  "byteLength": 110
-                }
-              }
-            }
-          ]
-        },
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diff --git a/src/plugins/markdown-report/tests/sarif/oracle/with-libc.sarif b/src/plugins/markdown-report/tests/sarif/oracle/with-libc.sarif
deleted file mode 100644
index 32a3730cb37..00000000000
--- a/src/plugins/markdown-report/tests/sarif/oracle/with-libc.sarif
+++ /dev/null
@@ -1,10882 +0,0 @@
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diff --git a/src/plugins/markdown-report/tests/sarif/std_string.c b/src/plugins/markdown-report/tests/sarif/std_print.c
similarity index 65%
rename from src/plugins/markdown-report/tests/sarif/std_string.c
rename to src/plugins/markdown-report/tests/sarif/std_print.c
index 992e36a58f0..6e5ecf037c9 100644
--- a/src/plugins/markdown-report/tests/sarif/std_string.c
+++ b/src/plugins/markdown-report/tests/sarif/std_print.c
@@ -1,8 +1,9 @@
 /* run.config*
 BIN: @PTEST_NAME@.sarif.unfiltered
 OPT: -eva -then -mdr-sarif-deterministic -mdr-gen sarif -mdr-out ./@PTEST_NAME@.sarif.unfiltered
-EXECNOW: LOG @PTEST_NAME@.sarif sed -e "s:@PTEST_SESSION@:PTEST_SESSION:" %{dep:@PTEST_NAME@.sarif.unfiltered} > @PTEST_NAME@.sarif 2> @NULL
+EXECNOW: LOG @PTEST_NAME@.sarif sed -e "s:@PTEST_SESSION@:PTEST_SESSION:" %{dep:@PTEST_NAME@.sarif.unfiltered} > @PTEST_NAME@.sarif 2> @DEV_NULL@
+COMMENT: tests printing a SARIF file with a source from the libc; we choose a small one to avoid a huge SARIF oracle
 */
-#include "string.c"
+#include "errno.c"
 
 int main() { }
diff --git a/tests/libc/fc_libc.c b/tests/libc/fc_libc.c
index be77d71504e..37e879fb7c4 100644
--- a/tests/libc/fc_libc.c
+++ b/tests/libc/fc_libc.c
@@ -4,7 +4,7 @@
  MODULE: check_libc_naming_conventions, check_const
    OPT: -load %{dep:@PTEST_NAME@.sav} -print -cpp-extra-args='-nostdinc -I@FRAMAC_SHARE@/libc' -eva @EVA_CONFIG@ -then -lib-entry -no-print
  MODULE:
-   OPT: -print -print-libc -machdep x86_32
+   OPT: -print -print-libc -machdep x86_32 -ocode @DEV_NULL@
  MODULE: check_parsing_individual_headers
    OPT:
  MODULE: check_libc_anonymous_tags
diff --git a/tests/libc/oracle/fc_libc.1.res.oracle b/tests/libc/oracle/fc_libc.1.res.oracle
index 67ee1541e1c..6bfe1d501b9 100644
--- a/tests/libc/oracle/fc_libc.1.res.oracle
+++ b/tests/libc/oracle/fc_libc.1.res.oracle
@@ -1,12423 +1 @@
 [kernel] Parsing fc_libc.c (with preprocessing)
-/* Generated by Frama-C */
-typedef long wchar_t;
-typedef unsigned int wint_t;
-typedef int ptrdiff_t;
-typedef unsigned int size_t;
-typedef int ssize_t;
-typedef unsigned char uint8_t;
-typedef unsigned short uint16_t;
-typedef unsigned int uint32_t;
-typedef unsigned int uintptr_t;
-typedef long long intmax_t;
-typedef unsigned long long uintmax_t;
-struct __fc_div_t {
-   int quot ;
-   int rem ;
-};
-typedef struct __fc_div_t div_t;
-struct __fc_ldiv_t {
-   long quot ;
-   long rem ;
-};
-typedef struct __fc_ldiv_t ldiv_t;
-struct __fc_lldiv_t {
-   long long quot ;
-   long long rem ;
-};
-typedef struct __fc_lldiv_t lldiv_t;
-typedef int error_t;
-struct __fc_fenv_t {
-   unsigned short __control_word ;
-   unsigned short __unused1 ;
-   unsigned short __status_word ;
-   unsigned short __unused2 ;
-   unsigned short __tags ;
-   unsigned short __unused3 ;
-   unsigned int __eip ;
-   unsigned short __cs_selector ;
-   unsigned int __opcode : 11 ;
-   unsigned int __unused4 : 5 ;
-   unsigned int __data_offset ;
-   unsigned short __data_selector ;
-   unsigned short __unused5 ;
-};
-typedef struct __fc_fenv_t fenv_t;
-typedef unsigned int fexcept_t;
-struct __fc_glob_t {
-   unsigned int gl_pathc ;
-   char **gl_pathv ;
-   unsigned int gl_offs ;
-   int gl_flags ;
-   void (*gl_closedir)(void *) ;
-   void *(*gl_readdir)(void *) ;
-   void *(*gl_opendir)(char const *) ;
-   int (*gl_lstat)(char const * restrict , void * restrict ) ;
-   int (*gl_stat)(char const * restrict , void * restrict ) ;
-};
-typedef struct __fc_glob_t glob_t;
-struct __fc_imaxdiv_t {
-   intmax_t quot ;
-   intmax_t rem ;
-};
-typedef struct __fc_imaxdiv_t imaxdiv_t;
-struct lconv {
-   char *decimal_point ;
-   char *thousands_sep ;
-   char *grouping ;
-   char *int_curr_symbol ;
-   char *currency_symbol ;
-   char *mon_decimal_point ;
-   char *mon_thousands_sep ;
-   char *mon_grouping ;
-   char *positive_sign ;
-   char *negative_sign ;
-   char int_frac_digits ;
-   char frac_digits ;
-   char p_cs_precedes ;
-   char p_sep_by_space ;
-   char n_cs_precedes ;
-   char n_sep_by_space ;
-   char p_sign_posn ;
-   char n_sign_posn ;
-   char int_p_cs_precedes ;
-   char int_p_sep_by_space ;
-   char int_n_cs_precedes ;
-   char int_n_sep_by_space ;
-   char int_p_sign_posn ;
-   char int_n_sign_posn ;
-};
-union __fc_u_finitef {
-   float f ;
-   unsigned short w[2] ;
-};
-union __fc_u_finite {
-   double d ;
-   unsigned short w[4] ;
-};
-struct __fc_pthread_attr_t {
-   int _fc ;
-};
-typedef struct __fc_pthread_attr_t pthread_attr_t;
-struct __fc_pthread_cond_t {
-   int _fc ;
-};
-typedef struct __fc_pthread_cond_t pthread_cond_t;
-struct __fc_pthread_condattr_t {
-   int _fc ;
-};
-typedef struct __fc_pthread_condattr_t pthread_condattr_t;
-struct __fc_pthread_mutex_t {
-   int _fc ;
-};
-typedef struct __fc_pthread_mutex_t pthread_mutex_t;
-struct __fc_pthread_mutexattr_t {
-   int _fc ;
-};
-typedef struct __fc_pthread_mutexattr_t pthread_mutexattr_t;
-typedef unsigned long pthread_t;
-typedef int pid_t;
-typedef unsigned int gid_t;
-typedef unsigned int uid_t;
-typedef unsigned long sigset_t;
-union sigval {
-   int sival_int ;
-   void *sival_ptr ;
-};
-struct __fc_siginfo_t {
-   int si_signo ;
-   int si_code ;
-   union sigval si_value ;
-   int si_errno ;
-   pid_t si_pid ;
-   uid_t si_uid ;
-   void *si_addr ;
-   int si_status ;
-   int si_band ;
-};
-typedef struct __fc_siginfo_t siginfo_t;
-struct sigaction {
-   void (*sa_handler)(int ) ;
-   void (*sa_sigaction)(int , siginfo_t *, void *) ;
-   sigset_t sa_mask ;
-   int sa_flags ;
-};
-typedef unsigned int socklen_t;
-typedef unsigned short sa_family_t;
-struct sockaddr {
-   sa_family_t sa_family ;
-   char sa_data[14] ;
-};
-struct iovec {
-   void *iov_base ;
-   size_t iov_len ;
-};
-struct msghdr {
-   void *msg_name ;
-   socklen_t msg_namelen ;
-   struct iovec *msg_iov ;
-   int msg_iovlen ;
-   void *msg_control ;
-   socklen_t msg_controllen ;
-   int msg_flags ;
-};
-struct __fc_sockfds_type {
-   int x ;
-};
-typedef uint32_t in_addr_t;
-struct in_addr {
-   in_addr_t s_addr ;
-};
-struct in6_addr {
-   uint8_t s6_addr[16] ;
-};
-enum __fc_ipproto {
-    IPPROTO_IP = 0,
-    IPPROTO_HOPOPTS = 0,
-    IPPROTO_ICMP = 1,
-    IPPROTO_IGMP = 2,
-    IPPROTO_IPIP = 4,
-    IPPROTO_TCP = 6,
-    IPPROTO_EGP = 8,
-    IPPROTO_PUP = 12,
-    IPPROTO_UDP = 17,
-    IPPROTO_IDP = 22,
-    IPPROTO_TP = 29,
-    IPPROTO_DCCP = 33,
-    IPPROTO_IPV6 = 41,
-    IPPROTO_ROUTING = 43,
-    IPPROTO_FRAGMENT = 44,
-    IPPROTO_RSVP = 46,
-    IPPROTO_GRE = 47,
-    IPPROTO_ESP = 50,
-    IPPROTO_AH = 51,
-    IPPROTO_ICMPV6 = 58,
-    IPPROTO_NONE = 59,
-    IPPROTO_DSTOPTS = 60,
-    IPPROTO_MTP = 92,
-    IPPROTO_ENCAP = 98,
-    IPPROTO_PIM = 103,
-    IPPROTO_COMP = 108,
-    IPPROTO_SCTP = 132,
-    IPPROTO_UDPLITE = 136,
-    IPPROTO_RAW = 255,
-    IPPROTO_MAX = 256
-};
-struct hostent {
-   char *h_name ;
-   char **h_aliases ;
-   int h_addrtype ;
-   int h_length ;
-   char **h_addr_list ;
-};
-struct addrinfo {
-   int ai_flags ;
-   int ai_family ;
-   int ai_socktype ;
-   int ai_protocol ;
-   socklen_t ai_addrlen ;
-   struct sockaddr *ai_addr ;
-   char *ai_canonname ;
-   struct addrinfo *ai_next ;
-};
-struct __fc_gethostbyname {
-   struct hostent host ;
-   unsigned char host_addr[sizeof(struct in_addr)] ;
-   char *h_addr_ptrs[2 + 1] ;
-   char *host_aliases[2] ;
-   char hostbuf[128] ;
-};
-struct passwd {
-   char *pw_name ;
-   char *pw_passwd ;
-   uid_t pw_uid ;
-   gid_t pw_gid ;
-   char *pw_gecos ;
-   char *pw_dir ;
-   char *pw_shell ;
-};
-typedef unsigned int ino_t;
-typedef long time_t;
-typedef unsigned int blkcnt_t;
-typedef unsigned int blksize_t;
-typedef unsigned int dev_t;
-typedef unsigned int mode_t;
-typedef unsigned int nlink_t;
-typedef long off_t;
-struct stat {
-   dev_t st_dev ;
-   ino_t st_ino ;
-   mode_t st_mode ;
-   nlink_t st_nlink ;
-   uid_t st_uid ;
-   gid_t st_gid ;
-   dev_t st_rdev ;
-   off_t st_size ;
-   time_t st_atime ;
-   time_t st_mtime ;
-   time_t st_ctime ;
-   blksize_t st_blksize ;
-   blkcnt_t st_blocks ;
-};
-struct __fc_pos_t {
-   unsigned long __fc_stdio_position ;
-};
-typedef struct __fc_pos_t fpos_t;
-struct __fc_FILE {
-   unsigned int __fc_FILE_id ;
-   unsigned int __fc_FILE_data ;
-};
-typedef struct __fc_FILE FILE;
-typedef int clockid_t;
-struct timespec {
-   long tv_sec ;
-   long tv_nsec ;
-};
-typedef unsigned int clock_t;
-struct tm {
-   int tm_sec ;
-   int tm_min ;
-   int tm_hour ;
-   int tm_mday ;
-   int tm_mon ;
-   int tm_year ;
-   int tm_wday ;
-   int tm_yday ;
-   int tm_isdst ;
-};
-enum __fc_memory_order {
-    memory_order_relaxed = 0,
-    memory_order_consume = 1,
-    memory_order_acquire = 2,
-    memory_order_release = 3,
-    memory_order_acq_rel = 4,
-    memory_order_seq_cst = 5
-};
-typedef enum __fc_memory_order memory_order;
-struct __fc_atomic_flag {
-   unsigned char __fc_val ;
-};
-typedef struct __fc_atomic_flag atomic_flag;
-typedef unsigned char atomic_uchar;
-typedef unsigned short atomic_ushort;
-typedef unsigned int atomic_uint;
-typedef unsigned long atomic_ulong;
-typedef unsigned long long atomic_ullong;
-typedef void * const * va_list;
-typedef unsigned int id_t;
-typedef int suseconds_t;
-enum length_modifier {
-    NONE = 0,
-    HH = 1,
-    H = 2,
-    L = 3,
-    LL = 4,
-    J = 5,
-    Z = 6,
-    T = 7,
-    UPPER_L = 8
-};
-typedef unsigned int useconds_t;
-struct dirent {
-   ino_t d_ino ;
-   off_t d_off ;
-   unsigned short d_reclen ;
-   unsigned char d_type ;
-   char d_name[256] ;
-};
-struct DIR {
-   unsigned int __fc_dir_id ;
-   unsigned int __fc_dir_position ;
-   struct stat *__fc_dir_inode ;
-   struct dirent **__fc_dir_entries ;
-};
-typedef struct DIR DIR;
-struct __fc_fd_set {
-   long __fc_fd_set[(unsigned int)1024 / ((unsigned int)8 * sizeof(long))] ;
-};
-typedef struct __fc_fd_set fd_set;
-struct timeval {
-   time_t tv_sec ;
-   suseconds_t tv_usec ;
-};
-struct flock {
-   short l_type ;
-   short l_whence ;
-   off_t l_start ;
-   off_t l_len ;
-   pid_t l_pid ;
-};
-struct option {
-   char const *name ;
-   int has_arg ;
-   int *flag ;
-   int val ;
-};
-typedef void * iconv_t;
-struct pollfd {
-   int fd ;
-   short events ;
-   short revents ;
-};
-typedef unsigned long nfds_t;
-typedef int __jmp_buf[8];
-struct __jmp_buf_tag {
-   __jmp_buf __jmpbuf ;
-   int saved ;
-   sigset_t sigs ;
-};
-struct __fc_code {
-   char const *c_name ;
-   int c_val ;
-};
-typedef struct __fc_code CODE;
-struct timezone {
-   int tz_minuteswest ;
-   int tz_dsttime ;
-};
-struct itimerval {
-   struct timeval it_interval ;
-   struct timeval it_value ;
-};
-typedef unsigned long rlim_t;
-struct rlimit {
-   rlim_t rlim_cur ;
-   rlim_t rlim_max ;
-};
-struct rusage {
-   struct timeval ru_utime ;
-   struct timeval ru_stime ;
-};
-struct tms {
-   clock_t tms_utime ;
-   clock_t tms_stime ;
-   clock_t tms_cutime ;
-   clock_t tms_cstime ;
-};
-struct utsname {
-   char sysname[65] ;
-   char nodename[65] ;
-   char release[65] ;
-   char version[65] ;
-   char machine[65] ;
-};
-typedef unsigned int tcflag_t;
-typedef unsigned char cc_t;
-typedef unsigned int speed_t;
-struct termios {
-   tcflag_t c_iflag ;
-   tcflag_t c_oflag ;
-   tcflag_t c_cflag ;
-   tcflag_t c_lflag ;
-   cc_t c_cc[32] ;
-};
-/*@ ghost extern int __fc_heap_status; */
-
-/*@
-axiomatic dynamic_allocation {
-  predicate is_allocable{L}(ℤ n) 
-    reads __fc_heap_status;
-  
-  axiom never_allocable{L}:
-    ∀ ℤ i; i < 0 ∨ i > 4294967295U ⇒ ¬is_allocable(i);
-  
-  }
- */
-int volatile Frama_C_entropy_source __attribute__((__unused__));
- __attribute__((__FC_BUILTIN__)) void Frama_C_make_unknown(char *p, size_t l);
-
- __attribute__((__FC_BUILTIN__)) void Frama_C_make_unknown_wchar(wchar_t *p,
-                                                                 size_t l);
-
- __attribute__((__FC_BUILTIN__)) int Frama_C_nondet(int a, int b);
-
- __attribute__((__FC_BUILTIN__)) void *Frama_C_nondet_ptr(void *a, void *b);
-
- __attribute__((__FC_BUILTIN__)) int Frama_C_interval(int min, int max);
-
- __attribute__((__FC_BUILTIN__)) unsigned char Frama_C_unsigned_char_interval
-(unsigned char min, unsigned char max);
-
- __attribute__((__FC_BUILTIN__)) char Frama_C_char_interval(char min,
-                                                            char max);
-
- __attribute__((__FC_BUILTIN__)) unsigned short Frama_C_unsigned_short_interval
-(unsigned short min, unsigned short max);
-
- __attribute__((__FC_BUILTIN__)) short Frama_C_short_interval(short min,
-                                                              short max);
-
- __attribute__((__FC_BUILTIN__)) unsigned int Frama_C_unsigned_int_interval
-(unsigned int min, unsigned int max);
-
- __attribute__((__FC_BUILTIN__)) unsigned long Frama_C_unsigned_long_interval
-(unsigned long min, unsigned long max);
-
- __attribute__((__FC_BUILTIN__)) long Frama_C_long_interval(long min,
-                                                            long max);
-
- __attribute__((__FC_BUILTIN__)) unsigned long long Frama_C_unsigned_long_long_interval
-(unsigned long long min, unsigned long long max);
-
- __attribute__((__FC_BUILTIN__)) long long Frama_C_long_long_interval
-(long long min, long long max);
-
- __attribute__((__FC_BUILTIN__)) size_t Frama_C_size_t_interval(size_t min,
-                                                                size_t max);
-
- __attribute__((__FC_BUILTIN__)) intmax_t Frama_C_intmax_t_interval(intmax_t min,
-                                                                    intmax_t max);
-
- __attribute__((__FC_BUILTIN__)) uintmax_t Frama_C_uintmax_t_interval
-(uintmax_t min, uintmax_t max);
-
- __attribute__((__FC_BUILTIN__)) ptrdiff_t Frama_C_ptrdiff_t_interval
-(ptrdiff_t min, ptrdiff_t max);
-
- __attribute__((__FC_BUILTIN__)) wint_t Frama_C_wint_t_interval(wint_t min,
-                                                                wint_t max);
-
- __attribute__((__FC_BUILTIN__)) double Frama_C_double_interval(double min,
-                                                                double max);
-
- __attribute__((__noreturn__, __FC_BUILTIN__)) void Frama_C_abort(void);
-
-unsigned short volatile __fc_unsigned_short_entropy;
-unsigned int volatile __fc_unsigned_int_entropy;
-long volatile __fc_long_entropy;
-unsigned long volatile __fc_unsigned_long_entropy;
-long long volatile __fc_long_long_entropy;
-unsigned long long volatile __fc_unsigned_long_long_entropy;
-size_t volatile __fc_size_t_entropy;
-intmax_t volatile __fc_intmax_t_entropy;
-uintmax_t volatile __fc_uintmax_t_entropy;
-ptrdiff_t volatile __fc_ptrdiff_t_entropy;
-wint_t volatile __fc_wint_t_entropy;
-/*@ assigns Frama_C_entropy_source;
-    assigns Frama_C_entropy_source \from Frama_C_entropy_source;
- */
-void Frama_C_update_entropy(void)
-{
-  Frama_C_entropy_source = Frama_C_entropy_source;
-  return;
-}
-
-/*@ requires valid_p: \valid(p + (0 .. l - 1));
-    ensures initialization: \initialized(\old(p) + (0 .. \old(l) - 1));
-    assigns *(p + (0 .. l - 1)), Frama_C_entropy_source;
-    assigns *(p + (0 .. l - 1)) \from Frama_C_entropy_source;
-    assigns Frama_C_entropy_source \from Frama_C_entropy_source;
- */
- __attribute__((__FC_BUILTIN__)) void Frama_C_make_unknown(char *p, size_t l);
-void Frama_C_make_unknown(char *p, size_t l)
-{
-  Frama_C_update_entropy();
-  {
-    size_t i = (size_t)0;
-    while (i < l) {
-      *(p + i) = (char)Frama_C_entropy_source;
-      i ++;
-    }
-  }
-  return;
-}
-
-/*@ requires valid_p: \valid(p + (0 .. l - 1));
-    ensures initialization: \initialized(\old(p) + (0 .. \old(l) - 1));
-    assigns *(p + (0 .. l - 1)), Frama_C_entropy_source;
-    assigns *(p + (0 .. l - 1)) \from Frama_C_entropy_source;
-    assigns Frama_C_entropy_source \from Frama_C_entropy_source;
- */
- __attribute__((__FC_BUILTIN__)) void Frama_C_make_unknown_wchar(wchar_t *p,
-                                                                 size_t l);
-void Frama_C_make_unknown_wchar(wchar_t *p, size_t l)
-{
-  Frama_C_update_entropy();
-  {
-    size_t i = (size_t)0;
-    while (i < l) {
-      *(p + i) = (wchar_t)Frama_C_entropy_source;
-      i ++;
-    }
-  }
-  return;
-}
-
-/*@ ensures result_a_or_b: \result ≡ \old(a) ∨ \result ≡ \old(b);
-    assigns \result, Frama_C_entropy_source;
-    assigns \result \from a, b, Frama_C_entropy_source;
-    assigns Frama_C_entropy_source \from Frama_C_entropy_source;
- */
- __attribute__((__FC_BUILTIN__)) int Frama_C_nondet(int a, int b);
-int Frama_C_nondet(int a, int b)
-{
-  int tmp;
-  Frama_C_update_entropy();
-  if (Frama_C_entropy_source) tmp = a; else tmp = b;
-  return tmp;
-}
-
-/*@ ensures result_a_or_b: \result ≡ \old(a) ∨ \result ≡ \old(b);
-    assigns \result, Frama_C_entropy_source;
-    assigns \result \from a, b, Frama_C_entropy_source;
-    assigns Frama_C_entropy_source \from Frama_C_entropy_source;
- */
- __attribute__((__FC_BUILTIN__)) void *Frama_C_nondet_ptr(void *a, void *b);
-void *Frama_C_nondet_ptr(void *a, void *b)
-{
-  void *tmp;
-  Frama_C_update_entropy();
-  if (Frama_C_entropy_source) tmp = a; else tmp = b;
-  return tmp;
-}
-
-/*@ requires order: min ≤ max;
-    ensures result_bounded: \old(min) ≤ \result ≤ \old(max);
-    assigns \result, Frama_C_entropy_source;
-    assigns \result \from min, max, Frama_C_entropy_source;
-    assigns Frama_C_entropy_source \from Frama_C_entropy_source;
- */
- __attribute__((__FC_BUILTIN__)) int Frama_C_interval(int min, int max);
-int Frama_C_interval(int min, int max)
-{
-  int r;
-  int aux;
-  Frama_C_update_entropy();
-  aux = Frama_C_entropy_source;
-  if (aux >= min) 
-    if (aux <= max) r = aux; else r = min;
-  else r = min;
-  return r;
-}
-
-/*@ requires order: min ≤ max;
-    ensures result_bounded: \old(min) ≤ \result ≤ \old(max);
-    assigns \result, Frama_C_entropy_source;
-    assigns \result \from min, max, Frama_C_entropy_source;
-    assigns Frama_C_entropy_source \from Frama_C_entropy_source;
- */
- __attribute__((__FC_BUILTIN__)) char Frama_C_char_interval(char min,
-                                                            char max);
-char Frama_C_char_interval(char min, char max)
-{
-  char __retres;
-  int tmp;
-  tmp = Frama_C_interval((int)min,(int)max);
-  __retres = (char)tmp;
-  return __retres;
-}
-
-/*@ requires order: min ≤ max;
-    ensures result_bounded: \old(min) ≤ \result ≤ \old(max);
-    assigns \result, Frama_C_entropy_source;
-    assigns \result \from min, max, Frama_C_entropy_source;
-    assigns Frama_C_entropy_source \from Frama_C_entropy_source;
- */
- __attribute__((__FC_BUILTIN__)) short Frama_C_short_interval(short min,
-                                                              short max);
-short Frama_C_short_interval(short min, short max)
-{
-  short __retres;
-  int tmp;
-  tmp = Frama_C_interval((int)min,(int)max);
-  __retres = (short)tmp;
-  return __retres;
-}
-
-/*@ assigns \result, Frama_C_entropy_source;
-    assigns \result \from min, max, Frama_C_entropy_source;
-    assigns Frama_C_entropy_source \from Frama_C_entropy_source;
-    
-    behavior finite:
-      assumes finite: \is_finite(min) ∧ \is_finite(max);
-      requires order: min ≤ max;
-      ensures
-        result_bounded:
-          \is_finite(\result) ∧ \old(min) ≤ \result ≤ \old(max);
-    
-    behavior infinite_not_nan:
-      assumes infinite: \is_infinite(min) ∨ \is_infinite(max);
-      assumes not_nan: ¬\is_NaN(min) ∧ ¬\is_NaN(max);
-      requires order: min ≤ max;
-      ensures
-        result_bounded:
-          ¬\is_NaN(\result) ∧ \old(min) ≤ \result ≤ \old(max);
-    
-    disjoint behaviors infinite_not_nan, finite;
- */
- __attribute__((__FC_BUILTIN__)) double Frama_C_double_interval(double min,
-                                                                double max);
-double Frama_C_double_interval(double min, double max)
-{
-  double tmp;
-  Frama_C_update_entropy();
-  if (Frama_C_entropy_source) tmp = min; else tmp = max;
-  return tmp;
-}
-
-/*@ requires order: min ≤ max;
-    ensures result_bounded: \old(min) ≤ \result ≤ \old(max);
-    assigns \result, Frama_C_entropy_source;
-    assigns \result \from min, max, Frama_C_entropy_source;
-    assigns Frama_C_entropy_source \from Frama_C_entropy_source;
- */
- __attribute__((__FC_BUILTIN__)) unsigned char Frama_C_unsigned_char_interval
-(unsigned char min, unsigned char max);
-unsigned char Frama_C_unsigned_char_interval(unsigned char min,
-                                             unsigned char max)
-{
-  unsigned char __retres;
-  int tmp;
-  tmp = Frama_C_interval((int)min,(int)max);
-  __retres = (unsigned char)tmp;
-  return __retres;
-}
-
-/*@ requires order: min ≤ max;
-    ensures result_bounded: \old(min) ≤ \result ≤ \old(max);
-    assigns \result, Frama_C_entropy_source;
-    assigns \result \from min, max, Frama_C_entropy_source;
-    assigns Frama_C_entropy_source \from Frama_C_entropy_source;
- */
- __attribute__((__FC_BUILTIN__)) unsigned short Frama_C_unsigned_short_interval
-(unsigned short min, unsigned short max);
-unsigned short Frama_C_unsigned_short_interval(unsigned short min,
-                                               unsigned short max)
-{
-  unsigned short r;
-  unsigned short aux;
-  Frama_C_update_entropy();
-  aux = __fc_unsigned_short_entropy;
-  if ((int)aux >= (int)min) 
-    if ((int)aux <= (int)max) r = aux; else r = min;
-  else r = min;
-  return r;
-}
-
-/*@ requires order: min ≤ max;
-    ensures result_bounded: \old(min) ≤ \result ≤ \old(max);
-    assigns \result, Frama_C_entropy_source;
-    assigns \result \from min, max, Frama_C_entropy_source;
-    assigns Frama_C_entropy_source \from Frama_C_entropy_source;
- */
- __attribute__((__FC_BUILTIN__)) unsigned int Frama_C_unsigned_int_interval
-(unsigned int min, unsigned int max);
-unsigned int Frama_C_unsigned_int_interval(unsigned int min, unsigned int max)
-{
-  unsigned int r;
-  unsigned int aux;
-  Frama_C_update_entropy();
-  aux = __fc_unsigned_int_entropy;
-  if (aux >= min) 
-    if (aux <= max) r = aux; else r = min;
-  else r = min;
-  return r;
-}
-
-/*@ requires order: min ≤ max;
-    ensures result_bounded: \old(min) ≤ \result ≤ \old(max);
-    assigns \result, Frama_C_entropy_source;
-    assigns \result \from min, max, Frama_C_entropy_source;
-    assigns Frama_C_entropy_source \from Frama_C_entropy_source;
- */
- __attribute__((__FC_BUILTIN__)) long Frama_C_long_interval(long min,
-                                                            long max);
-long Frama_C_long_interval(long min, long max)
-{
-  long r;
-  long aux;
-  Frama_C_update_entropy();
-  aux = __fc_long_entropy;
-  if (aux >= min) 
-    if (aux <= max) r = aux; else r = min;
-  else r = min;
-  return r;
-}
-
-/*@ requires order: min ≤ max;
-    ensures result_bounded: \old(min) ≤ \result ≤ \old(max);
-    assigns \result, Frama_C_entropy_source;
-    assigns \result \from min, max, Frama_C_entropy_source;
-    assigns Frama_C_entropy_source \from Frama_C_entropy_source;
- */
- __attribute__((__FC_BUILTIN__)) unsigned long Frama_C_unsigned_long_interval
-(unsigned long min, unsigned long max);
-unsigned long Frama_C_unsigned_long_interval(unsigned long min,
-                                             unsigned long max)
-{
-  unsigned long r;
-  unsigned long aux;
-  Frama_C_update_entropy();
-  aux = __fc_unsigned_long_entropy;
-  if (aux >= min) 
-    if (aux <= max) r = aux; else r = min;
-  else r = min;
-  return r;
-}
-
-/*@ requires order: min ≤ max;
-    ensures result_bounded: \old(min) ≤ \result ≤ \old(max);
-    assigns \result, Frama_C_entropy_source;
-    assigns \result \from min, max, Frama_C_entropy_source;
-    assigns Frama_C_entropy_source \from Frama_C_entropy_source;
- */
- __attribute__((__FC_BUILTIN__)) long long Frama_C_long_long_interval
-(long long min, long long max);
-long long Frama_C_long_long_interval(long long min, long long max)
-{
-  long long r;
-  long long aux;
-  Frama_C_update_entropy();
-  aux = __fc_long_long_entropy;
-  if (aux >= min) 
-    if (aux <= max) r = aux; else r = min;
-  else r = min;
-  return r;
-}
-
-/*@ requires order: min ≤ max;
-    ensures result_bounded: \old(min) ≤ \result ≤ \old(max);
-    assigns \result, Frama_C_entropy_source;
-    assigns \result \from min, max, Frama_C_entropy_source;
-    assigns Frama_C_entropy_source \from Frama_C_entropy_source;
- */
- __attribute__((__FC_BUILTIN__)) unsigned long long Frama_C_unsigned_long_long_interval
-(unsigned long long min, unsigned long long max);
-unsigned long long Frama_C_unsigned_long_long_interval(unsigned long long min,
-                                                       unsigned long long max)
-{
-  unsigned long long r;
-  unsigned long long aux;
-  Frama_C_update_entropy();
-  aux = __fc_unsigned_long_long_entropy;
-  if (aux >= min) 
-    if (aux <= max) r = aux; else r = min;
-  else r = min;
-  return r;
-}
-
-/*@ requires order: min ≤ max;
-    ensures result_bounded: \old(min) ≤ \result ≤ \old(max);
-    assigns \result, Frama_C_entropy_source;
-    assigns \result \from min, max, Frama_C_entropy_source;
-    assigns Frama_C_entropy_source \from Frama_C_entropy_source;
- */
- __attribute__((__FC_BUILTIN__)) size_t Frama_C_size_t_interval(size_t min,
-                                                                size_t max);
-size_t Frama_C_size_t_interval(size_t min, size_t max)
-{
-  size_t r;
-  size_t aux;
-  Frama_C_update_entropy();
-  aux = __fc_size_t_entropy;
-  if (aux >= min) 
-    if (aux <= max) r = aux; else r = min;
-  else r = min;
-  return r;
-}
-
-/*@ requires order: min ≤ max;
-    ensures result_bounded: \old(min) ≤ \result ≤ \old(max);
-    assigns \result, Frama_C_entropy_source;
-    assigns \result \from min, max, Frama_C_entropy_source;
-    assigns Frama_C_entropy_source \from Frama_C_entropy_source;
- */
- __attribute__((__FC_BUILTIN__)) intmax_t Frama_C_intmax_t_interval(intmax_t min,
-                                                                    intmax_t max);
-intmax_t Frama_C_intmax_t_interval(intmax_t min, intmax_t max)
-{
-  intmax_t r;
-  intmax_t aux;
-  Frama_C_update_entropy();
-  aux = __fc_intmax_t_entropy;
-  if (aux >= min) 
-    if (aux <= max) r = aux; else r = min;
-  else r = min;
-  return r;
-}
-
-/*@ requires order: min ≤ max;
-    ensures result_bounded: \old(min) ≤ \result ≤ \old(max);
-    assigns \result, Frama_C_entropy_source;
-    assigns \result \from min, max, Frama_C_entropy_source;
-    assigns Frama_C_entropy_source \from Frama_C_entropy_source;
- */
- __attribute__((__FC_BUILTIN__)) uintmax_t Frama_C_uintmax_t_interval
-(uintmax_t min, uintmax_t max);
-uintmax_t Frama_C_uintmax_t_interval(uintmax_t min, uintmax_t max)
-{
-  uintmax_t r;
-  uintmax_t aux;
-  Frama_C_update_entropy();
-  aux = __fc_uintmax_t_entropy;
-  if (aux >= min) 
-    if (aux <= max) r = aux; else r = min;
-  else r = min;
-  return r;
-}
-
-/*@ requires order: min ≤ max;
-    ensures result_bounded: \old(min) ≤ \result ≤ \old(max);
-    assigns \result, Frama_C_entropy_source;
-    assigns \result \from min, max, Frama_C_entropy_source;
-    assigns Frama_C_entropy_source \from Frama_C_entropy_source;
- */
- __attribute__((__FC_BUILTIN__)) ptrdiff_t Frama_C_ptrdiff_t_interval
-(ptrdiff_t min, ptrdiff_t max);
-ptrdiff_t Frama_C_ptrdiff_t_interval(ptrdiff_t min, ptrdiff_t max)
-{
-  ptrdiff_t r;
-  ptrdiff_t aux;
-  Frama_C_update_entropy();
-  aux = __fc_ptrdiff_t_entropy;
-  if (aux >= min) 
-    if (aux <= max) r = aux; else r = min;
-  else r = min;
-  return r;
-}
-
-/*@ requires order: min ≤ max;
-    ensures result_bounded: \old(min) ≤ \result ≤ \old(max);
-    assigns \result, Frama_C_entropy_source;
-    assigns \result \from min, max, Frama_C_entropy_source;
-    assigns Frama_C_entropy_source \from Frama_C_entropy_source;
- */
- __attribute__((__FC_BUILTIN__)) wint_t Frama_C_wint_t_interval(wint_t min,
-                                                                wint_t max);
-wint_t Frama_C_wint_t_interval(wint_t min, wint_t max)
-{
-  wint_t r;
-  wint_t aux;
-  Frama_C_update_entropy();
-  aux = __fc_wint_t_entropy;
-  if (aux >= min) 
-    if (aux <= max) r = aux; else r = min;
-  else r = min;
-  return r;
-}
-
-/*@ terminates \false;
-    ensures never_terminates: \false;
-    exits always_exits: \true;
-    assigns \nothing;
- */
-extern  __attribute__((__noreturn__)) void __builtin_abort(void);
-
-/*@ terminates \false;
-    ensures never_terminates: \false;
-    assigns \nothing; */
- __attribute__((__noreturn__, __FC_BUILTIN__)) void Frama_C_abort(void);
- __attribute__((__noreturn__)) void Frama_C_abort(void)
-{
-  __builtin_abort();
-  return;
-}
-
-int __fc_errno;
-
-/*@
-axiomatic MemCmp {
-  logic ℤ memcmp{L1, L2}(char *s1, char *s2, ℤ n) 
-    reads \at(*(s1 + (0 .. n - 1)),L1), \at(*(s2 + (0 .. n - 1)),L2);
-  
-  axiom memcmp_zero{L1, L2}:
-    ∀ char *s1, char *s2;
-    ∀ ℤ n;
-      memcmp{L1, L2}(s1, s2, n) ≡ 0 ⇔
-      (∀ ℤ i; 0 ≤ i < n ⇒ \at(*(s1 + i),L1) ≡ \at(*(s2 + i),L2));
-  
-  }
- */
-/*@
-axiomatic MemChr {
-  logic 𝔹 memchr{L}(char *s, ℤ c, ℤ n) 
-    reads *(s + (0 .. n - 1));
-  
-  logic ℤ memchr_off{L}(char *s, ℤ c, ℤ n) 
-    reads *(s + (0 .. n - 1));
-  
-  axiom memchr_def{L}:
-    ∀ char *s;
-    ∀ ℤ c;
-    ∀ ℤ n;
-      memchr(s, c, n) ≡ \true ⇔
-      (∃ int i; 0 ≤ i < n ∧ *(s + i) ≡ c);
-  
-  }
- */
-/*@
-axiomatic MemSet {
-  logic 𝔹 memset{L}(char *s, ℤ c, ℤ n) 
-    reads *(s + (0 .. n - 1));
-  
-  axiom memset_def{L}:
-    ∀ char *s;
-    ∀ ℤ c;
-    ∀ ℤ n;
-      memset(s, c, n) ≡ \true ⇔
-      (∀ ℤ i; 0 ≤ i < n ⇒ *(s + i) ≡ c);
-  
-  }
- */
-/*@
-axiomatic StrLen {
-  logic ℤ strlen{L}(char *s) 
-    reads *(s + (0 ..));
-  
-  axiom strlen_pos_or_null{L}:
-    ∀ char *s;
-    ∀ ℤ i;
-      0 ≤ i ∧ (∀ ℤ j; 0 ≤ j < i ⇒ *(s + j) ≢ '\000') ∧
-      *(s + i) ≡ '\000' ⇒ strlen(s) ≡ i;
-  
-  axiom strlen_neg{L}:
-    ∀ char *s;
-      (∀ ℤ i; 0 ≤ i ⇒ *(s + i) ≢ '\000') ⇒ strlen(s) < 0;
-  
-  axiom strlen_before_null{L}:
-    ∀ char *s;
-    ∀ ℤ i; 0 ≤ i < strlen(s) ⇒ *(s + i) ≢ '\000';
-  
-  axiom strlen_at_null{L}:
-    ∀ char *s; 0 ≤ strlen(s) ⇒ *(s + strlen(s)) ≡ '\000';
-  
-  axiom strlen_not_zero{L}:
-    ∀ char *s;
-    ∀ ℤ i;
-      0 ≤ i ≤ strlen(s) ∧ *(s + i) ≢ '\000' ⇒ i < strlen(s);
-  
-  axiom strlen_zero{L}:
-    ∀ char *s;
-    ∀ ℤ i;
-      0 ≤ i ≤ strlen(s) ∧ *(s + i) ≡ '\000' ⇒ i ≡ strlen(s);
-  
-  axiom strlen_sup{L}:
-    ∀ char *s;
-    ∀ ℤ i; 0 ≤ i ∧ *(s + i) ≡ '\000' ⇒ 0 ≤ strlen(s) ≤ i;
-  
-  axiom strlen_shift{L}:
-    ∀ char *s;
-    ∀ ℤ i; 0 ≤ i ≤ strlen(s) ⇒ strlen(s + i) ≡ strlen(s) - i;
-  
-  axiom strlen_create{L}:
-    ∀ char *s;
-    ∀ ℤ i; 0 ≤ i ∧ *(s + i) ≡ '\000' ⇒ 0 ≤ strlen(s) ≤ i;
-  
-  axiom strlen_create_shift{L}:
-    ∀ char *s;
-    ∀ ℤ i;
-    ∀ ℤ k;
-      0 ≤ k ≤ i ∧ *(s + i) ≡ '\000' ⇒ 0 ≤ strlen(s + k) ≤ i - k;
-  
-  axiom memcmp_strlen_left{L}:
-    ∀ char *s1, char *s2;
-    ∀ ℤ n;
-      memcmp{L, L}(s1, s2, n) ≡ 0 ∧ strlen(s1) < n ⇒
-      strlen(s1) ≡ strlen(s2);
-  
-  axiom memcmp_strlen_right{L}:
-    ∀ char *s1, char *s2;
-    ∀ ℤ n;
-      memcmp{L, L}(s1, s2, n) ≡ 0 ∧ strlen(s2) < n ⇒
-      strlen(s1) ≡ strlen(s2);
-  
-  axiom memcmp_strlen_shift_left{L}:
-    ∀ char *s1, char *s2;
-    ∀ ℤ k, ℤ n;
-      memcmp{L, L}(s1, s2 + k, n) ≡ 0 ≤ k ∧ strlen(s1) < n ⇒
-      0 ≤ strlen(s2) ≤ k + strlen(s1);
-  
-  axiom memcmp_strlen_shift_right{L}:
-    ∀ char *s1, char *s2;
-    ∀ ℤ k, ℤ n;
-      memcmp{L, L}(s1 + k, s2, n) ≡ 0 ≤ k ∧ strlen(s2) < n ⇒
-      0 ≤ strlen(s1) ≤ k + strlen(s2);
-  
-  }
- */
-/*@
-axiomatic StrCmp {
-  logic ℤ strcmp{L}(char *s1, char *s2) 
-    reads *(s1 + (0 .. strlen(s1))), *(s2 + (0 .. strlen(s2)));
-  
-  axiom strcmp_zero{L}:
-    ∀ char *s1, char *s2;
-      strcmp(s1, s2) ≡ 0 ⇔
-      strlen(s1) ≡ strlen(s2) ∧
-      (∀ ℤ i; 0 ≤ i ≤ strlen(s1) ⇒ *(s1 + i) ≡ *(s2 + i));
-  
-  }
- */
-/*@
-axiomatic StrNCmp {
-  logic ℤ strncmp{L}(char *s1, char *s2, ℤ n) 
-    reads *(s1 + (0 .. n - 1)), *(s2 + (0 .. n - 1));
-  
-  axiom strncmp_zero{L}:
-    ∀ char *s1, char *s2;
-    ∀ ℤ n;
-      strncmp(s1, s2, n) ≡ 0 ⇔
-      (strlen(s1) < n ∧ strcmp(s1, s2) ≡ 0) ∨
-      (∀ ℤ i; 0 ≤ i < n ⇒ *(s1 + i) ≡ *(s2 + i));
-  
-  }
- */
-/*@
-axiomatic StrChr {
-  logic 𝔹 strchr{L}(char *s, ℤ c) 
-    reads *(s + (0 .. strlen(s)));
-  
-  axiom strchr_def{L}:
-    ∀ char *s;
-    ∀ ℤ c;
-      strchr(s, c) ≡ \true ⇔
-      (∃ ℤ i; 0 ≤ i ≤ strlen(s) ∧ *(s + i) ≡ (char)c);
-  
-  }
- */
-/*@
-axiomatic WMemChr {
-  logic 𝔹 wmemchr{L}(wchar_t *s, wchar_t c, ℤ n) 
-    reads *(s + (0 .. n - 1));
-  
-  logic ℤ wmemchr_off{L}(wchar_t *s, wchar_t c, ℤ n) 
-    reads *(s + (0 .. n - 1));
-  
-  axiom wmemchr_def{L}:
-    ∀ wchar_t *s;
-    ∀ long c;
-    ∀ ℤ n;
-      wmemchr(s, c, n) ≡ \true ⇔
-      (∃ int i; 0 ≤ i < n ∧ *(s + i) ≡ c);
-  
-  }
- */
-/*@
-axiomatic WcsLen {
-  logic ℤ wcslen{L}(wchar_t *s) 
-    reads *(s + (0 ..));
-  
-  axiom wcslen_pos_or_null{L}:
-    ∀ wchar_t *s;
-    ∀ ℤ i;
-      0 ≤ i ∧ (∀ ℤ j; 0 ≤ j < i ⇒ *(s + j) ≢ 0) ∧
-      *(s + i) ≡ 0 ⇒ wcslen(s) ≡ i;
-  
-  axiom wcslen_neg{L}:
-    ∀ wchar_t *s; (∀ ℤ i; 0 ≤ i ⇒ *(s + i) ≢ 0) ⇒ wcslen(s) < 0;
-  
-  axiom wcslen_before_null{L}:
-    ∀ wchar_t *s;
-    ∀ int i; 0 ≤ i < wcslen(s) ⇒ *(s + i) ≢ 0;
-  
-  axiom wcslen_at_null{L}:
-    ∀ wchar_t *s; 0 ≤ wcslen(s) ⇒ *(s + wcslen(s)) ≡ 0;
-  
-  axiom wcslen_not_zero{L}:
-    ∀ wchar_t *s;
-    ∀ int i; 0 ≤ i ≤ wcslen(s) ∧ *(s + i) ≢ 0 ⇒ i < wcslen(s);
-  
-  axiom wcslen_zero{L}:
-    ∀ wchar_t *s;
-    ∀ int i; 0 ≤ i ≤ wcslen(s) ∧ *(s + i) ≡ 0 ⇒ i ≡ wcslen(s);
-  
-  axiom wcslen_sup{L}:
-    ∀ wchar_t *s;
-    ∀ int i; 0 ≤ i ∧ *(s + i) ≡ 0 ⇒ 0 ≤ wcslen(s) ≤ i;
-  
-  axiom wcslen_shift{L}:
-    ∀ wchar_t *s;
-    ∀ int i; 0 ≤ i ≤ wcslen(s) ⇒ wcslen(s + i) ≡ wcslen(s) - i;
-  
-  axiom wcslen_create{L}:
-    ∀ wchar_t *s;
-    ∀ int i; 0 ≤ i ∧ *(s + i) ≡ 0 ⇒ 0 ≤ wcslen(s) ≤ i;
-  
-  axiom wcslen_create_shift{L}:
-    ∀ wchar_t *s;
-    ∀ int i;
-    ∀ int k;
-      0 ≤ k ≤ i ∧ *(s + i) ≡ 0 ⇒ 0 ≤ wcslen(s + k) ≤ i - k;
-  
-  }
- */
-/*@
-axiomatic WcsCmp {
-  logic ℤ wcscmp{L}(wchar_t *s1, wchar_t *s2) 
-    reads *(s1 + (0 .. wcslen(s1))), *(s2 + (0 .. wcslen(s2)));
-  
-  axiom wcscmp_zero{L}:
-    ∀ wchar_t *s1, wchar_t *s2;
-      wcscmp(s1, s2) ≡ 0 ⇔
-      wcslen(s1) ≡ wcslen(s2) ∧
-      (∀ ℤ i; 0 ≤ i ≤ wcslen(s1) ⇒ *(s1 + i) ≡ *(s2 + i));
-  
-  }
- */
-/*@
-axiomatic WcsNCmp {
-  logic ℤ wcsncmp{L}(wchar_t *s1, wchar_t *s2, ℤ n) 
-    reads *(s1 + (0 .. n - 1)), *(s2 + (0 .. n - 1));
-  
-  axiom wcsncmp_zero{L}:
-    ∀ wchar_t *s1, wchar_t *s2;
-    ∀ ℤ n;
-      wcsncmp(s1, s2, n) ≡ 0 ⇔
-      (wcslen(s1) < n ∧ wcscmp(s1, s2) ≡ 0) ∨
-      (∀ ℤ i; 0 ≤ i < n ⇒ *(s1 + i) ≡ *(s2 + i));
-  
-  }
- */
-/*@
-axiomatic WcsChr {
-  logic 𝔹 wcschr{L}(wchar_t *wcs, ℤ wc) 
-    reads *(wcs + (0 .. wcslen(wcs)));
-  
-  axiom wcschr_def{L}:
-    ∀ wchar_t *wcs;
-    ∀ ℤ wc;
-      wcschr(wcs, wc) ≡ \true ⇔
-      (∃ ℤ i; 0 ≤ i ≤ wcslen(wcs) ∧ *(wcs + i) ≡ (wchar_t)wc);
-  
-  }
- */
-/*@
-predicate valid_string{L}(char *s) =
-  0 ≤ strlen(s) ∧ \valid(s + (0 .. strlen(s)));
- */
-/*@
-predicate valid_read_string{L}(char *s) =
-  0 ≤ strlen(s) ∧ \valid_read(s + (0 .. strlen(s)));
- */
-/*@
-predicate valid_read_nstring{L}(char *s, ℤ n) =
-  (\valid_read(s + (0 .. n - 1)) ∧ \initialized(s + (0 .. n - 1))) ∨
-  valid_read_string(s);
- */
-/*@
-predicate valid_string_or_null{L}(char *s) = s ≡ \null ∨ valid_string(s);
- */
-/*@
-predicate valid_wstring{L}(wchar_t *s) =
-  0 ≤ wcslen(s) ∧ \valid(s + (0 .. wcslen(s)));
- */
-/*@
-predicate valid_read_wstring{L}(wchar_t *s) =
-  0 ≤ wcslen(s) ∧ \valid_read(s + (0 .. wcslen(s)));
- */
-/*@
-predicate valid_read_nwstring{L}(wchar_t *s, ℤ n) =
-  (\valid_read(s + (0 .. n - 1)) ∧ \initialized(s + (0 .. n - 1))) ∨
-  valid_read_wstring(s);
- */
-/*@
-predicate valid_wstring_or_null{L}(wchar_t *s) =
-  s ≡ \null ∨ valid_wstring(s);
- */
-/*@ logic ℤ strnlen{L}(char *s, ℤ n) = \at(\min(strlen(s), n),L);
-
-*/
-/*@ requires valid_nptr: valid_read_string(nptr);
-    assigns \result;
-    assigns \result
-      \from (indirect: nptr), (indirect: *(nptr + (0 .. strlen{Old}(nptr))));
- */
-extern double atof(char const *nptr);
-
-int atoi(char const *p);
-
-/*@ requires valid_nptr: valid_read_string(nptr);
-    assigns \result;
-    assigns \result
-      \from (indirect: nptr), (indirect: *(nptr + (0 .. strlen{Old}(nptr))));
- */
-extern long atol(char const *nptr);
-
-/*@ requires valid_nptr: valid_read_string(nptr);
-    assigns \result;
-    assigns \result
-      \from (indirect: nptr), (indirect: *(nptr + (0 .. strlen{Old}(nptr))));
- */
-extern long long atoll(char const *nptr);
-
-/*@ requires valid_string_nptr: valid_read_string(nptr);
-    requires separation: \separated(nptr, endptr);
-    assigns \result, *endptr;
-    assigns \result
-      \from (indirect: nptr), (indirect: *(nptr + (0 .. strlen{Old}(nptr))));
-    assigns *endptr
-      \from nptr, (indirect: *(nptr + (0 .. strlen{Old}(nptr)))),
-            (indirect: endptr);
-    
-    behavior no_storage:
-      assumes null_endptr: endptr ≡ \null;
-      assigns \result;
-      assigns \result
-        \from (indirect: nptr),
-              (indirect: *(nptr + (0 .. strlen{Old}(nptr))));
-    
-    behavior store_position:
-      assumes nonnull_endptr: endptr ≢ \null;
-      requires valid_endptr: \valid(endptr);
-      ensures initialization: \initialized(\old(endptr));
-      ensures valid_endptr_content: \valid_read(*\old(endptr));
-      ensures
-        endptr_same_base:
-          \base_addr(*\old(endptr)) ≡ \base_addr(\old(nptr));
-      assigns \result, *endptr;
-      assigns \result
-        \from (indirect: nptr),
-              (indirect: *(nptr + (0 .. strlen{Old}(nptr))));
-      assigns *endptr
-        \from nptr, (indirect: *(nptr + (0 .. strlen{Old}(nptr)))),
-              (indirect: endptr);
-    
-    complete behaviors store_position, no_storage;
-    disjoint behaviors store_position, no_storage;
- */
-extern double strtod(char const * restrict nptr, char ** restrict endptr);
-
-/*@ requires valid_string_nptr: valid_read_string(nptr);
-    requires separation: \separated(nptr, endptr);
-    assigns \result, *endptr;
-    assigns \result
-      \from (indirect: nptr), (indirect: *(nptr + (0 .. strlen{Old}(nptr))));
-    assigns *endptr
-      \from nptr, (indirect: *(nptr + (0 .. strlen{Old}(nptr)))),
-            (indirect: endptr);
-    
-    behavior no_storage:
-      assumes null_endptr: endptr ≡ \null;
-      assigns \result;
-      assigns \result
-        \from (indirect: nptr),
-              (indirect: *(nptr + (0 .. strlen{Old}(nptr))));
-    
-    behavior store_position:
-      assumes nonnull_endptr: endptr ≢ \null;
-      requires valid_endptr: \valid(endptr);
-      ensures initialization: \initialized(\old(endptr));
-      ensures valid_endptr_content: \valid_read(*\old(endptr));
-      ensures
-        endptr_same_base:
-          \base_addr(*\old(endptr)) ≡ \base_addr(\old(nptr));
-      assigns \result, *endptr;
-      assigns \result
-        \from (indirect: nptr),
-              (indirect: *(nptr + (0 .. strlen{Old}(nptr))));
-      assigns *endptr
-        \from nptr, (indirect: *(nptr + (0 ..))), (indirect: endptr);
-    
-    complete behaviors store_position, no_storage;
-    disjoint behaviors store_position, no_storage;
- */
-extern float strtof(char const * restrict nptr, char ** restrict endptr);
-
-/*@ requires valid_string_nptr: valid_read_string(nptr);
-    requires separation: \separated(nptr, endptr);
-    assigns \result, *endptr;
-    assigns \result
-      \from (indirect: nptr), (indirect: *(nptr + (0 .. strlen{Old}(nptr))));
-    assigns *endptr
-      \from nptr, (indirect: *(nptr + (0 .. strlen{Old}(nptr)))),
-            (indirect: endptr);
-    
-    behavior no_storage:
-      assumes null_endptr: endptr ≡ \null;
-      assigns \result;
-      assigns \result
-        \from (indirect: nptr),
-              (indirect: *(nptr + (0 .. strlen{Old}(nptr))));
-    
-    behavior store_position:
-      assumes nonnull_endptr: endptr ≢ \null;
-      requires valid_endptr: \valid(endptr);
-      ensures initialization: \initialized(\old(endptr));
-      ensures valid_endptr_content: \valid_read(*\old(endptr));
-      ensures
-        endptr_same_base:
-          \base_addr(*\old(endptr)) ≡ \base_addr(\old(nptr));
-      assigns \result, *endptr;
-      assigns \result
-        \from (indirect: nptr),
-              (indirect: *(nptr + (0 .. strlen{Old}(nptr))));
-      assigns *endptr
-        \from nptr, (indirect: *(nptr + (0 .. strlen{Old}(nptr)))),
-              (indirect: endptr);
-    
-    complete behaviors store_position, no_storage;
-    disjoint behaviors store_position, no_storage;
- */
-extern long double strtold(char const * restrict nptr,
-                           char ** restrict endptr);
-
-/*@ requires valid_string_nptr: valid_read_string(nptr);
-    requires separation: \separated(nptr, endptr);
-    requires base_range: base ≡ 0 ∨ (2 ≤ base ≤ 36);
-    assigns \result, *endptr;
-    assigns \result
-      \from (indirect: nptr), (indirect: *(nptr + (0 .. strlen{Old}(nptr)))),
-            (indirect: base);
-    assigns *endptr
-      \from nptr, (indirect: *(nptr + (0 .. strlen{Old}(nptr)))),
-            (indirect: endptr), (indirect: base);
-    
-    behavior no_storage:
-      assumes null_endptr: endptr ≡ \null;
-      assigns \result;
-      assigns \result
-        \from (indirect: nptr),
-              (indirect: *(nptr + (0 .. strlen{Old}(nptr)))),
-              (indirect: base);
-    
-    behavior store_position:
-      assumes nonnull_endptr: endptr ≢ \null;
-      requires valid_endptr: \valid(endptr);
-      ensures initialization: \initialized(\old(endptr));
-      ensures valid_endptr_content: \valid_read(*\old(endptr));
-      ensures
-        endptr_same_base:
-          \base_addr(*\old(endptr)) ≡ \base_addr(\old(nptr));
-      assigns \result, *endptr;
-      assigns \result
-        \from (indirect: nptr),
-              (indirect: *(nptr + (0 .. strlen{Old}(nptr)))),
-              (indirect: base);
-      assigns *endptr
-        \from nptr, (indirect: *(nptr + (0 .. strlen{Old}(nptr)))),
-              (indirect: endptr), (indirect: base);
-    
-    complete behaviors store_position, no_storage;
-    disjoint behaviors store_position, no_storage;
- */
-extern long strtol(char const * restrict nptr, char ** restrict endptr,
-                   int base);
-
-/*@ requires valid_string_nptr: valid_read_string(nptr);
-    requires separation: \separated(nptr, endptr);
-    requires base_range: base ≡ 0 ∨ (2 ≤ base ≤ 36);
-    assigns \result, *endptr;
-    assigns \result
-      \from (indirect: nptr), (indirect: *(nptr + (0 .. strlen{Old}(nptr)))),
-            (indirect: base);
-    assigns *endptr
-      \from nptr, (indirect: *(nptr + (0 .. strlen{Old}(nptr)))),
-            (indirect: endptr), (indirect: base);
-    
-    behavior no_storage:
-      assumes null_endptr: endptr ≡ \null;
-      assigns \result;
-      assigns \result
-        \from (indirect: nptr),
-              (indirect: *(nptr + (0 .. strlen{Old}(nptr)))),
-              (indirect: base);
-    
-    behavior store_position:
-      assumes nonnull_endptr: endptr ≢ \null;
-      requires valid_endptr: \valid(endptr);
-      ensures initialization: \initialized(\old(endptr));
-      ensures valid_endptr_content: \valid_read(*\old(endptr));
-      ensures
-        endptr_same_base:
-          \base_addr(*\old(endptr)) ≡ \base_addr(\old(nptr));
-      assigns \result, *endptr;
-      assigns \result
-        \from (indirect: nptr),
-              (indirect: *(nptr + (0 .. strlen{Old}(nptr)))),
-              (indirect: base);
-      assigns *endptr
-        \from nptr, (indirect: *(nptr + (0 .. strlen{Old}(nptr)))),
-              (indirect: endptr), (indirect: base);
-    
-    complete behaviors store_position, no_storage;
-    disjoint behaviors store_position, no_storage;
- */
-extern long long strtoll(char const * restrict nptr, char ** restrict endptr,
-                         int base);
-
-/*@ requires valid_string_nptr: valid_read_string(nptr);
-    requires separation: \separated(nptr, endptr);
-    requires base_range: base ≡ 0 ∨ (2 ≤ base ≤ 36);
-    assigns \result, *endptr;
-    assigns \result
-      \from (indirect: nptr), (indirect: *(nptr + (0 .. strlen{Old}(nptr)))),
-            (indirect: base);
-    assigns *endptr
-      \from nptr, (indirect: *(nptr + (0 .. strlen{Old}(nptr)))),
-            (indirect: endptr), (indirect: base);
-    
-    behavior no_storage:
-      assumes null_endptr: endptr ≡ \null;
-      assigns \result;
-      assigns \result
-        \from (indirect: nptr),
-              (indirect: *(nptr + (0 .. strlen{Old}(nptr)))),
-              (indirect: base);
-    
-    behavior store_position:
-      assumes nonnull_endptr: endptr ≢ \null;
-      requires valid_endptr: \valid(endptr);
-      ensures initialization: \initialized(\old(endptr));
-      ensures valid_endptr_content: \valid_read(*\old(endptr));
-      ensures
-        endptr_same_base:
-          \base_addr(*\old(endptr)) ≡ \base_addr(\old(nptr));
-      assigns \result, *endptr;
-      assigns \result
-        \from (indirect: nptr),
-              (indirect: *(nptr + (0 .. strlen{Old}(nptr)))),
-              (indirect: base);
-      assigns *endptr
-        \from nptr, (indirect: *(nptr + (0 .. strlen{Old}(nptr)))),
-              (indirect: endptr), (indirect: base);
-    
-    complete behaviors store_position, no_storage;
-    disjoint behaviors store_position, no_storage;
- */
-extern unsigned long strtoul(char const * restrict nptr,
-                             char ** restrict endptr, int base);
-
-/*@ requires valid_string_nptr: valid_read_string(nptr);
-    requires separation: \separated(nptr, endptr);
-    requires base_range: base ≡ 0 ∨ (2 ≤ base ≤ 36);
-    assigns \result, *endptr;
-    assigns \result
-      \from (indirect: nptr), (indirect: *(nptr + (0 .. strlen{Old}(nptr)))),
-            (indirect: base);
-    assigns *endptr
-      \from nptr, (indirect: *(nptr + (0 .. strlen{Old}(nptr)))),
-            (indirect: endptr), (indirect: base);
-    
-    behavior no_storage:
-      assumes null_endptr: endptr ≡ \null;
-      assigns \result;
-      assigns \result
-        \from (indirect: nptr),
-              (indirect: *(nptr + (0 .. strlen{Old}(nptr)))),
-              (indirect: base);
-    
-    behavior store_position:
-      assumes nonnull_endptr: endptr ≢ \null;
-      requires valid_endptr: \valid(endptr);
-      ensures initialization: \initialized(\old(endptr));
-      ensures valid_endptr_content: \valid_read(*\old(endptr));
-      ensures
-        endptr_same_base:
-          \base_addr(*\old(endptr)) ≡ \base_addr(\old(nptr));
-      assigns \result, *endptr;
-      assigns \result
-        \from (indirect: nptr),
-              (indirect: *(nptr + (0 .. strlen{Old}(nptr)))),
-              (indirect: base);
-      assigns *endptr
-        \from nptr, (indirect: *(nptr + (0 .. strlen{Old}(nptr)))),
-              (indirect: endptr), (indirect: base);
-    
-    complete behaviors store_position, no_storage;
-    disjoint behaviors store_position, no_storage;
- */
-extern unsigned long long strtoull(char const * restrict nptr,
-                                   char ** restrict endptr, int base);
-
-/*@ ghost extern int __fc_random_counter __attribute__((__unused__)); */
-
-unsigned long const __fc_rand_max = (unsigned long)2147483647;
-/*@ ensures result_range: 0 ≤ \result ≤ __fc_rand_max;
-    assigns \result, __fc_random_counter;
-    assigns \result \from (indirect: __fc_random_counter);
-    assigns __fc_random_counter \from __fc_random_counter;
- */
-extern int rand(void);
-
-/*@ assigns __fc_random_counter;
-    assigns __fc_random_counter \from seed; */
-extern void srand(unsigned int seed);
-
-/*@ ensures result_range: 0 ≤ \result ≤ __fc_rand_max;
-    assigns \result;
-    assigns \result \from (indirect: __fc_random_counter);
- */
-extern long random(void);
-
-/*@ assigns __fc_random_counter;
-    assigns __fc_random_counter \from seed; */
-extern void srandom(unsigned int seed);
-
-int __fc_random48_init;
-unsigned short __fc_random48_counter[3];
-unsigned short *__fc_p_random48_counter = __fc_random48_counter;
-/*@ ensures random48_initialized: __fc_random48_init ≡ 1;
-    assigns __fc_random48_counter[0 .. 2], __fc_random48_init;
-    assigns __fc_random48_counter[0 .. 2] \from seed;
-    assigns __fc_random48_init \from \nothing;
- */
-extern void srand48(long seed);
-
-/*@ requires valid_seed16v: \valid(seed16v + (0 .. 2));
-    requires
-      initialization: initialized_seed16v: \initialized(seed16v + (0 .. 2));
-    ensures random48_initialized: __fc_random48_init ≡ 1;
-    ensures result_counter: \result ≡ __fc_p_random48_counter;
-    assigns __fc_random48_counter[0 .. 2], __fc_random48_init, \result;
-    assigns __fc_random48_counter[0 .. 2] \from *(seed16v + (0 .. 2));
-    assigns __fc_random48_init \from \nothing;
-    assigns \result \from __fc_p_random48_counter;
- */
-extern unsigned short *seed48(unsigned short seed16v[3]);
-
-/*@ requires valid_param: \valid(param + (0 .. 6));
-    requires
-      initialization: initialized_param: \initialized(param + (0 .. 6));
-    ensures random48_initialized: __fc_random48_init ≡ 1;
-    assigns __fc_random48_counter[0 .. 2], __fc_random48_init;
-    assigns __fc_random48_counter[0 .. 2] \from *(param + (0 .. 6));
-    assigns __fc_random48_init \from \nothing;
- */
-extern void lcong48(unsigned short param[7]);
-
-/*@ requires random48_initialized: __fc_random48_init ≡ 1;
-    ensures result_range: \is_finite(\result) ∧ 0.0 ≤ \result < 1.0;
-    assigns __fc_random48_counter[0 .. 2], \result;
-    assigns __fc_random48_counter[0 .. 2]
-      \from __fc_random48_counter[0 .. 2];
-    assigns \result \from __fc_random48_counter[0 .. 2];
- */
-extern double drand48(void);
-
-/*@ requires valid_xsubi: \valid(xsubi + (0 .. 2));
-    requires
-      initialization: initialized_xsubi: \initialized(xsubi + (0 .. 2));
-    ensures result_range: \is_finite(\result) ∧ 0.0 ≤ \result < 1.0;
-    assigns __fc_random48_counter[0 .. 2], \result;
-    assigns __fc_random48_counter[0 .. 2]
-      \from __fc_random48_counter[0 .. 2];
-    assigns \result \from __fc_random48_counter[0 .. 2];
- */
-extern double erand48(unsigned short xsubi[3]);
-
-/*@ requires random48_initialized: __fc_random48_init ≡ 1;
-    ensures result_range: 0 ≤ \result < 2147483648;
-    assigns __fc_random48_counter[0 .. 2], \result;
-    assigns __fc_random48_counter[0 .. 2]
-      \from __fc_random48_counter[0 .. 2];
-    assigns \result \from __fc_random48_counter[0 .. 2];
- */
-extern long lrand48(void);
-
-/*@ requires valid_xsubi: \valid(xsubi + (0 .. 2));
-    requires
-      initialization: initialized_xsubi: \initialized(xsubi + (0 .. 2));
-    ensures result_range: 0 ≤ \result < 2147483648;
-    assigns __fc_random48_counter[0 .. 2], \result;
-    assigns __fc_random48_counter[0 .. 2]
-      \from __fc_random48_counter[0 .. 2];
-    assigns \result \from __fc_random48_counter[0 .. 2];
- */
-extern long nrand48(unsigned short xsubi[3]);
-
-/*@ requires random48_initialized: __fc_random48_init ≡ 1;
-    ensures result_range: -2147483648 ≤ \result < 2147483648;
-    assigns __fc_random48_counter[0 .. 2], \result;
-    assigns __fc_random48_counter[0 .. 2]
-      \from __fc_random48_counter[0 .. 2];
-    assigns \result \from __fc_random48_counter[0 .. 2];
- */
-extern long mrand48(void);
-
-/*@ requires valid_xsubi: \valid(xsubi + (0 .. 2));
-    requires
-      initialization: initialized_xsubi: \initialized(xsubi + (0 .. 2));
-    ensures result_range: -2147483648 ≤ \result < 2147483648;
-    assigns __fc_random48_counter[0 .. 2], \result;
-    assigns __fc_random48_counter[0 .. 2]
-      \from __fc_random48_counter[0 .. 2];
-    assigns \result \from __fc_random48_counter[0 .. 2];
- */
-extern long jrand48(unsigned short xsubi[3]);
-
-void *calloc(size_t nmemb, size_t size);
-
-/*@ assigns __fc_heap_status, \result;
-    assigns __fc_heap_status \from size, __fc_heap_status;
-    assigns \result \from (indirect: size), (indirect: __fc_heap_status);
-    allocates \result;
-    
-    behavior allocation:
-      assumes can_allocate: is_allocable(size);
-      ensures allocation: \fresh{Old, Here}(\result,\old(size));
-      assigns __fc_heap_status, \result;
-      assigns __fc_heap_status \from size, __fc_heap_status;
-      assigns \result \from (indirect: size), (indirect: __fc_heap_status);
-    
-    behavior no_allocation:
-      assumes cannot_allocate: ¬is_allocable(size);
-      ensures null_result: \result ≡ \null;
-      assigns \result;
-      assigns \result \from \nothing;
-      allocates \nothing;
-    
-    complete behaviors no_allocation, allocation;
-    disjoint behaviors no_allocation, allocation;
- */
-extern void *malloc(size_t size);
-
-/*@ requires freeable: p ≡ \null ∨ \freeable(p);
-    assigns __fc_heap_status;
-    assigns __fc_heap_status \from __fc_heap_status;
-    frees p;
-    
-    behavior deallocation:
-      assumes nonnull_p: p ≢ \null;
-      ensures freed: \allocable(\old(p));
-      assigns __fc_heap_status;
-      assigns __fc_heap_status \from __fc_heap_status;
-    
-    behavior no_deallocation:
-      assumes null_p: p ≡ \null;
-      assigns \nothing;
-      allocates \nothing;
-    
-    complete behaviors no_deallocation, deallocation;
-    disjoint behaviors no_deallocation, deallocation;
- */
-extern void free(void *p);
-
-/*@ requires freeable: ptr ≡ \null ∨ \freeable(ptr);
-    assigns __fc_heap_status, \result;
-    assigns __fc_heap_status \from __fc_heap_status;
-    assigns \result \from size, ptr, __fc_heap_status;
-    frees ptr;
-    allocates \result;
-    
-    behavior allocation:
-      assumes can_allocate: is_allocable(size);
-      ensures allocation: \fresh{Old, Here}(\result,\old(size));
-      assigns \result;
-      assigns \result \from size, __fc_heap_status;
-      allocates \result;
-    
-    behavior deallocation:
-      assumes nonnull_ptr: ptr ≢ \null;
-      assumes can_allocate: is_allocable(size);
-      ensures freed: \allocable(\old(ptr));
-      ensures freeable: \result ≡ \null ∨ \freeable(\result);
-      frees ptr;
-    
-    behavior fail:
-      assumes cannot_allocate: ¬is_allocable(size);
-      ensures null_result: \result ≡ \null;
-      assigns \result;
-      assigns \result \from size, __fc_heap_status;
-      allocates \nothing;
-    
-    complete behaviors fail, deallocation, allocation;
-    disjoint behaviors allocation, fail;
-    disjoint behaviors deallocation, fail;
- */
-extern void *realloc(void *ptr, size_t size);
-
-/*@ requires freeable: ptr ≡ \null ∨ \freeable(ptr);
-    assigns __fc_heap_status, \result;
-    assigns __fc_heap_status
-      \from (indirect: nmemb), (indirect: size), __fc_heap_status;
-    assigns \result
-      \from ptr, (indirect: nmemb), (indirect: size),
-            (indirect: __fc_heap_status);
-    frees ptr;
-    allocates \result;
-    
-    behavior allocation:
-      assumes can_allocate: is_allocable(nmemb * size);
-      ensures
-        allocation: \fresh{Old, Here}(\result,\old(nmemb) * \old(size));
-      allocates \result;
-    
-    behavior deallocation:
-      assumes nonnull_ptr: ptr ≢ \null;
-      assumes can_allocate: is_allocable(nmemb * size);
-      ensures freed: \allocable(\old(ptr));
-      ensures freeable: \result ≡ \null ∨ \freeable(\result);
-      frees ptr;
-    
-    behavior fail:
-      assumes cannot_allocate: ¬is_allocable(nmemb * size);
-      ensures null_result: \result ≡ \null;
-      assigns \result;
-      assigns \result
-        \from (indirect: nmemb), (indirect: size),
-              (indirect: __fc_heap_status);
-      allocates \nothing;
-    
-    complete behaviors fail, deallocation, allocation;
-    disjoint behaviors allocation, fail;
-    disjoint behaviors deallocation, fail;
- */
-extern void *reallocarray(void *ptr, size_t nmemb, size_t size);
-
-/*@ terminates \false;
-    exits status: \exit_status ≢ 0;
-    ensures never_terminates: \false;
-    
-    assigns \exit_status \from \nothing;
- */
-extern  __attribute__((__noreturn__)) void abort(void);
-
-/*@ assigns \result;
-    assigns \result \from \nothing; */
-extern int atexit(void (*func)(void));
-
-/*@ assigns \result;
-    assigns \result \from \nothing; */
-extern int at_quick_exit(void (*func)(void));
-
-/*@ terminates \false;
-    exits status: \exit_status ≡ \old(status);
-    ensures never_terminates: \false;
-    
-    assigns \exit_status \from status;
- */
-extern  __attribute__((__noreturn__)) void exit(int status);
-
-/*@ terminates \false;
-    ensures never_terminates: \false;
-    assigns \nothing; */
-extern  __attribute__((__noreturn__)) void _Exit(int status);
-
-char *__fc_env[4096];
-char *getenv(char const *name);
-
-int putenv(char *string);
-
-int setenv(char const *name, char const *value, int overwrite);
-
-int unsetenv(char const *name);
-
-/*@ terminates \false;
-    ensures never_terminates: \false;
-    assigns \nothing; */
-extern  __attribute__((__noreturn__)) void quick_exit(int status);
-
-/*@ requires
-      null_or_valid_string_command:
-        command ≡ \null ∨ valid_read_string(command);
-    assigns \result;
-    assigns \result
-      \from (indirect: command),
-            (indirect: *(command + (0 .. strlen{Old}(command))));
- */
-extern int system(char const *command);
-
-/*@ requires valid_function_compar: \valid_function(compar);
-    ensures
-      null_or_correct_result:
-        \result ≡ \null ∨
-        \subset(\result,
-               (void *)((char *)\old(base) +
-                        (0 .. \old(size) * (\old(nmemb) - 1))));
-    assigns \result;
-    assigns \result
-      \from (indirect: key), *((char *)key + (0 .. size - 1)), base,
-            *((char *)base + (0 .. size * (nmemb - 1))), (indirect: nmemb),
-            (indirect: size), (indirect: *compar);
- */
-extern void *bsearch(void const *key, void const *base, size_t nmemb,
-                     size_t size, int (*compar)(void const *, void const *));
-
-/*@ requires valid_function_compar: \valid_function(compar);
-    assigns *((char *)base + (0 ..));
-    assigns *((char *)base + (0 ..))
-      \from (indirect: base), *((char *)base + (0 ..)), (indirect: nmemb),
-            (indirect: size), (indirect: compar), (indirect: *compar);
- */
-extern void qsort(void *base, size_t nmemb, size_t size,
-                  int (*compar)(void const *, void const *));
-
-int abs(int i);
-
-/*@ requires abs_representable: j > -2147483647L - 1L;
-    assigns \result;
-    assigns \result \from j;
-    
-    behavior negative:
-      assumes negative: j < 0;
-      ensures opposite_result: \result ≡ -\old(j);
-    
-    behavior nonnegative:
-      assumes nonnegative: j ≥ 0;
-      ensures same_result: \result ≡ \old(j);
-    
-    complete behaviors nonnegative, negative;
-    disjoint behaviors nonnegative, negative;
- */
-extern long labs(long j);
-
-/*@ requires abs_representable: j > -9223372036854775807LL - 1LL;
-    assigns \result;
-    assigns \result \from j;
-    
-    behavior negative:
-      assumes negative: j < 0;
-      ensures opposite_result: \result ≡ -\old(j);
-    
-    behavior nonnegative:
-      assumes nonnegative: j ≥ 0;
-      ensures same_result: \result ≡ \old(j);
-    
-    complete behaviors nonnegative, negative;
-    disjoint behaviors nonnegative, negative;
- */
-extern long long llabs(long long j);
-
-/*@ requires denom_nonzero: denom ≢ 0;
-    requires no_overflow: ¬(numer ≡ -2147483647 - 1 ∧ denom ≡ -1);
-    assigns \result;
-    assigns \result \from numer, denom;
- */
-extern div_t div(int numer, int denom);
-
-/*@ requires denom_nonzero: denom ≢ 0;
-    requires no_overflow: ¬(numer ≡ -2147483647L - 1L ∧ denom ≡ -1);
-    assigns \result;
-    assigns \result \from numer, denom;
- */
-extern ldiv_t ldiv(long numer, long denom);
-
-/*@ requires denom_nonzero: denom ≢ 0;
-    requires
-      no_overflow:
-        ¬(numer ≡ -9223372036854775807LL - 1LL ∧ denom ≡ -1);
-    assigns \result;
-    assigns \result \from numer, denom;
- */
-extern lldiv_t lldiv(long long numer, long long denom);
-
-/*@ ghost extern int __fc_mblen_state; */
-
-/*@ assigns \result, __fc_mblen_state;
-    assigns \result
-      \from (indirect: s), (indirect: *(s + (0 ..))), (indirect: n),
-            __fc_mblen_state;
-    assigns __fc_mblen_state
-      \from (indirect: s), (indirect: *(s + (0 ..))), (indirect: n),
-            __fc_mblen_state;
- */
-extern int mblen(char const *s, size_t n);
-
-/*@ ghost extern int __fc_mbtowc_state; */
-
-/*@ requires separation: \separated(pwc, s);
-    ensures consumed_range: \result ≤ \old(n);
-    assigns \result, *(pwc + (0 .. \result - 1)), __fc_mbtowc_state;
-    assigns \result
-      \from (indirect: s), (indirect: *(s + (0 .. n - 1))), (indirect: n),
-            __fc_mbtowc_state;
-    assigns *(pwc + (0 .. \result - 1))
-      \from (indirect: s), *(s + (0 .. n - 1)), (indirect: n),
-            __fc_mbtowc_state;
-    assigns __fc_mbtowc_state
-      \from (indirect: s), *(s + (0 .. n - 1)), (indirect: n),
-            __fc_mbtowc_state;
- */
-extern int mbtowc(wchar_t * restrict pwc, char const * restrict s, size_t n);
-
-/*@ ghost extern int __fc_wctomb_state; */
-
-/*@ assigns \result, *(s + (0 ..)), __fc_wctomb_state;
-    assigns \result \from (indirect: wc), __fc_wctomb_state;
-    assigns *(s + (0 ..)) \from wc, __fc_wctomb_state;
-    assigns __fc_wctomb_state \from wc, __fc_wctomb_state;
- */
-extern int wctomb(char *s, wchar_t wc);
-
-/*@ requires separation: \separated(pwcs, s);
-    assigns \result, *(pwcs + (0 .. n - 1));
-    assigns \result
-      \from (indirect: s), (indirect: *(s + (0 .. n - 1))), (indirect: n);
-    assigns *(pwcs + (0 .. n - 1))
-      \from (indirect: s), *(s + (0 .. n - 1)), (indirect: n);
- */
-extern size_t mbstowcs(wchar_t * restrict pwcs, char const * restrict s,
-                       size_t n);
-
-/*@ requires separation: \separated(s, pwcs);
-    assigns \result, *(s + (0 .. n - 1));
-    assigns \result
-      \from (indirect: pwcs), (indirect: *(pwcs + (0 .. n - 1))),
-            (indirect: n);
-    assigns *(s + (0 .. n - 1))
-      \from (indirect: pwcs), *(pwcs + (0 .. n - 1)), (indirect: n);
- */
-extern size_t wcstombs(char * restrict s, wchar_t const * restrict pwcs,
-                       size_t n);
-
-int posix_memalign(void **memptr, size_t alignment, size_t size);
-
-/*@ requires valid_template: valid_string(templat);
-    requires template_len: strlen(templat) ≥ 6;
-    ensures
-      result_error_or_valid_fd: \result ≡ -1 ∨ (0 ≤ \result < 16);
-    assigns *(templat + (0 ..)), \result;
-    assigns *(templat + (0 ..)) \from \nothing;
-    assigns \result \from \nothing;
- */
-extern int mkstemp(char *templat);
-
-/*@ requires valid_template: valid_string(templat);
-    requires template_len: strlen(templat) ≥ 6 + suffixlen;
-    requires non_negative_suffixlen: suffixlen ≥ 0;
-    ensures
-      result_error_or_valid_fd: \result ≡ -1 ∨ (0 ≤ \result < 16);
-    assigns *(templat + (0 ..)), \result;
-    assigns *(templat + (0 ..)) \from \nothing;
-    assigns \result \from \nothing;
- */
-extern int mkstemps(char *templat, int suffixlen);
-
-char *realpath(char const * restrict file_name, char * restrict resolved_name);
-
-char *canonicalize_file_name(char const *path);
-
-/*@ requires valid_p: \valid((char *)buf + (0 .. n - 1));
-    ensures
-      initialization: \initialized((char *)\old(buf) + (0 .. \old(n) - 1));
-    assigns *((char *)buf + (0 .. n - 1)), Frama_C_entropy_source;
-    assigns *((char *)buf + (0 .. n - 1)) \from Frama_C_entropy_source;
-    assigns Frama_C_entropy_source \from Frama_C_entropy_source;
- */
-void arc4random_buf(void *buf, size_t n);
-
-/*@
-predicate non_escaping{L}(void *s, ℤ n) =
-  ∀ ℤ i; 0 ≤ i < n ⇒ ¬\dangling((char *)s + i);
- */
-/*@
-predicate empty_block{L}(void *s) =
-  \block_length((char *)s) ≡ 0 ∧ \offset((char *)s) ≡ 0;
- */
-/*@
-predicate valid_or_empty{L}(void *s, size_t n) =
-  (empty_block(s) ∨ \valid_read((char *)s)) ∧
-  \valid((char *)s + (0 .. n - 1));
- */
-/*@
-predicate valid_read_or_empty{L}(void *s, size_t n) =
-  (empty_block(s) ∨ \valid_read((char *)s)) ∧
-  \valid_read((char *)s + (1 .. n - 1));
-
-*/
-int memcmp(void const *s1, void const *s2, size_t n);
-
-void *memchr(void const *s, int c, size_t n);
-
-void *memrchr(void const *s, int c, size_t n);
-
-void *memcpy(void * restrict dest, void const * restrict src, size_t n);
-
-void *mempcpy(void * restrict dest, void const * restrict src, size_t n);
-
-void *memmove(void *dest, void const *src, size_t n);
-
-void *memset(void *s, int c, size_t n);
-
-size_t strlen(char const *s);
-
-size_t strnlen(char const *s, size_t maxlen);
-
-int strcmp(char const *s1, char const *s2);
-
-int strncmp(char const *s1, char const *s2, size_t n);
-
-/*@ requires valid_string_s1: valid_read_string(s1);
-    requires valid_string_s2: valid_read_string(s2);
-    assigns \result;
-    assigns \result
-      \from (indirect: *(s1 + (0 .. strlen{Old}(s1)))),
-            (indirect: *(s2 + (0 .. strlen{Old}(s2))));
- */
-extern int strcoll(char const *s1, char const *s2);
-
-char *strchr(char const *s, int c);
-
-/*@ requires valid_string_s: valid_read_string(s);
-    ensures result_valid_string: valid_read_string(\result);
-    ensures result_same_base: \base_addr(\result) ≡ \base_addr(\old(s));
-    assigns \result;
-    assigns \result
-      \from s, (indirect: *(s + (0 .. strlen{Old}(s)))), (indirect: c);
- */
-extern char *strchrnul(char const *s, int c);
-
-char *strrchr(char const *s, int c);
-
-/*@ requires valid_string_s: valid_read_string(s);
-    requires valid_string_reject: valid_read_string(reject);
-    ensures result_bounded: 0 ≤ \result ≤ strlen(\old(s));
-    assigns \result;
-    assigns \result
-      \from (indirect: *(s + (0 .. strlen{Old}(s)))),
-            (indirect: *(reject + (0 .. strlen{Old}(reject))));
- */
-extern size_t strcspn(char const *s, char const *reject);
-
-/*@ requires valid_string_s: valid_read_string(s);
-    requires valid_string_accept: valid_read_string(accept);
-    ensures result_bounded: 0 ≤ \result ≤ strlen(\old(s));
-    assigns \result;
-    assigns \result
-      \from (indirect: *(s + (0 .. strlen{Old}(s)))),
-            (indirect: *(accept + (0 .. strlen{Old}(accept))));
- */
-extern size_t strspn(char const *s, char const *accept);
-
-/*@ requires valid_string_s: valid_read_string(s);
-    requires valid_string_accept: valid_read_string(accept);
-    ensures
-      result_null_or_same_base:
-        \result ≡ \null ∨
-        (valid_read_string(\result) ∧
-         \base_addr(\result) ≡ \base_addr(\old(s)));
-    assigns \result;
-    assigns \result
-      \from s, (indirect: *(s + (0 .. strlen{Old}(s)))),
-            (indirect: *(accept + (0 .. strlen{Old}(accept))));
- */
-extern char *strpbrk(char const *s, char const *accept);
-
-char *strstr(char const *haystack, char const *needle);
-
-/*@ requires valid_string_haystack: valid_read_string(haystack);
-    requires valid_string_needle: valid_read_string(needle);
-    ensures
-      result_null_or_in_haystack:
-        \result ≡ \null ∨
-        (valid_read_string(\result) ∧
-         \base_addr(\result) ≡ \base_addr(\old(haystack)));
-    assigns \result;
-    assigns \result
-      \from haystack, (indirect: *(haystack + (0 .. strlen{Old}(haystack)))),
-            (indirect: *(needle + (0 .. strlen{Old}(needle))));
- */
-extern char *strcasestr(char const *haystack, char const *needle);
-
-char *__fc_strtok_ptr;
-/*@ requires valid_string_delim: valid_read_string(delim);
-    requires
-      separation:
-        \separated(delim + (0 .. strlen(delim)), s + (0 .. strlen(s)));
-    assigns *(s + (0 ..)), *(__fc_strtok_ptr + (0 ..)), \result,
-            __fc_strtok_ptr;
-    assigns *(s + (0 ..))
-      \from *(s + (0 ..)), (indirect: s), (indirect: __fc_strtok_ptr),
-            (indirect: *(delim + (0 .. strlen{Old}(delim))));
-    assigns *(__fc_strtok_ptr + (0 ..))
-      \from *(__fc_strtok_ptr + (0 ..)), (indirect: s),
-            (indirect: __fc_strtok_ptr),
-            (indirect: *(delim + (0 .. strlen{Old}(delim))));
-    assigns \result
-      \from s, __fc_strtok_ptr, (indirect: *(s + (0 ..))),
-            (indirect: *(__fc_strtok_ptr + (0 ..))),
-            (indirect: *(delim + (0 .. strlen{Old}(delim))));
-    assigns __fc_strtok_ptr
-      \from \old(__fc_strtok_ptr), s,
-            (indirect: *(__fc_strtok_ptr + (0 ..))),
-            (indirect: *(delim + (0 .. strlen{Old}(delim))));
-    
-    behavior new_str:
-      assumes s_not_null: s ≢ \null;
-      requires
-        valid_string_s_or_delim_not_found:
-          valid_string(s) ∨
-          (valid_read_string(s) ∧
-           (∀ ℤ i;
-              0 ≤ i < strlen(delim) ⇒
-              ¬(strchr(s, *(delim + i)) ≡ \true)));
-      ensures
-        result_same_base:
-          \result ≡ \null ∨
-          (valid_read_string(\result) ∧
-           \base_addr(\result) ≡ \base_addr(\old(s)));
-      ensures ptr_valid_string: valid_read_string(__fc_strtok_ptr);
-      ensures
-        ptr_same_base: \base_addr(__fc_strtok_ptr) ≡ \base_addr(\old(s));
-      assigns __fc_strtok_ptr, *(s + (0 ..)), \result;
-      assigns __fc_strtok_ptr
-        \from s, (indirect: *(s + (0 ..))),
-              (indirect: *(delim + (0 .. strlen{Old}(delim))));
-      assigns *(s + (0 ..))
-        \from *(s + (0 ..)), (indirect: s),
-              (indirect: *(delim + (0 .. strlen{Old}(delim))));
-      assigns \result
-        \from s, (indirect: *(s + (0 ..))),
-              (indirect: *(delim + (0 .. strlen{Old}(delim))));
-    
-    behavior resume_str:
-      assumes s_null: s ≡ \null;
-      requires not_first_call: __fc_strtok_ptr ≢ \null;
-      ensures
-        result_same_base:
-          \result ≡ \null ∨
-          (valid_read_string(\result) ∧
-           \base_addr(\result) ≡ \base_addr(\old(__fc_strtok_ptr)));
-      ensures ptr_valid_string: valid_read_string(__fc_strtok_ptr);
-      ensures
-        ptr_same_base:
-          \base_addr(__fc_strtok_ptr) ≡ \base_addr(\old(__fc_strtok_ptr));
-      assigns *(__fc_strtok_ptr + (0 ..)), __fc_strtok_ptr, \result;
-      assigns *(__fc_strtok_ptr + (0 ..))
-        \from *(__fc_strtok_ptr + (0 ..)), (indirect: __fc_strtok_ptr),
-              (indirect: *(delim + (0 .. strlen{Old}(delim))));
-      assigns __fc_strtok_ptr
-        \from \old(__fc_strtok_ptr), (indirect: *(__fc_strtok_ptr + (0 ..))),
-              (indirect: *(delim + (0 .. strlen{Old}(delim))));
-      assigns \result
-        \from __fc_strtok_ptr, (indirect: *(__fc_strtok_ptr + (0 ..))),
-              (indirect: *(delim + (0 .. strlen{Old}(delim))));
-    
-    complete behaviors resume_str, new_str;
-    disjoint behaviors resume_str, new_str;
- */
-extern char *strtok(char * restrict s, char const * restrict delim);
-
-/*@ requires valid_string_delim: valid_read_string(delim);
-    requires
-      separation:
-        \separated(
-          delim + (0 .. strlen(delim)), s + (0 .. strlen(s)),
-          *saveptr + (0 ..)
-          );
-    requires valid_saveptr: \valid(saveptr);
-    assigns *(s + (0 ..)), *(*saveptr + (0 ..)), \result, *saveptr;
-    assigns *(s + (0 ..))
-      \from *(s + (0 ..)), (indirect: s), (indirect: *saveptr),
-            (indirect: *(delim + (0 .. strlen{Old}(delim))));
-    assigns *(*saveptr + (0 ..))
-      \from *(*saveptr + (0 ..)), (indirect: s), (indirect: *saveptr),
-            (indirect: *(delim + (0 .. strlen{Old}(delim))));
-    assigns \result
-      \from s, *saveptr, (indirect: *(s + (0 ..))),
-            (indirect: *(*saveptr + (0 ..))),
-            (indirect: *(delim + (0 .. strlen{Old}(delim))));
-    assigns *saveptr
-      \from \old(*saveptr), s, (indirect: *(*saveptr + (0 ..))),
-            (indirect: *(delim + (0 .. strlen{Old}(delim))));
-    
-    behavior new_str:
-      assumes s_not_null: s ≢ \null;
-      requires
-        valid_string_s_or_delim_not_found:
-          valid_string(s) ∨
-          (valid_read_string(s) ∧
-           (∀ ℤ i;
-              0 ≤ i < strlen(delim) ⇒
-              ¬(strchr(s, *(delim + i)) ≡ \true)));
-      ensures
-        result_same_base:
-          \result ≡ \null ∨
-          (valid_read_string(\result) ∧
-           \base_addr(\result) ≡ \base_addr(\old(s)));
-      ensures saveptr_valid_string: valid_read_string(*\old(saveptr));
-      ensures
-        saveptr_same_base: \base_addr(*\old(saveptr)) ≡ \base_addr(\old(s));
-      assigns *saveptr, *(s + (0 ..)), \result;
-      assigns *saveptr
-        \from s, (indirect: *(s + (0 ..))),
-              (indirect: *(delim + (0 .. strlen{Old}(delim))));
-      assigns *(s + (0 ..))
-        \from *(s + (0 ..)), (indirect: s),
-              (indirect: *(delim + (0 .. strlen{Old}(delim))));
-      assigns \result
-        \from s, (indirect: *(s + (0 ..))),
-              (indirect: *(delim + (0 .. strlen{Old}(delim))));
-    
-    behavior resume_str:
-      assumes s_null: s ≡ \null;
-      requires not_first_call: *saveptr ≢ \null;
-      requires initialization: saveptr: \initialized(saveptr);
-      ensures
-        result_same_base:
-          \result ≡ \null ∨
-          (valid_read_string(\result) ∧
-           \base_addr(\result) ≡ \base_addr(\old(*saveptr)));
-      ensures saveptr_valid_string: valid_read_string(*\old(saveptr));
-      ensures
-        saveptr_same_base:
-          \base_addr(*\old(saveptr)) ≡ \base_addr(\old(*saveptr));
-      assigns *(*saveptr + (0 ..)), *saveptr, \result;
-      assigns *(*saveptr + (0 ..))
-        \from *(*saveptr + (0 ..)), (indirect: *saveptr),
-              (indirect: *(delim + (0 .. strlen{Old}(delim))));
-      assigns *saveptr
-        \from \old(*saveptr), (indirect: *(*saveptr + (0 ..))),
-              (indirect: *(delim + (0 .. strlen{Old}(delim))));
-      assigns \result
-        \from *saveptr, (indirect: *(*saveptr + (0 ..))),
-              (indirect: *(delim + (0 .. strlen{Old}(delim))));
-    
-    complete behaviors resume_str, new_str;
-    disjoint behaviors resume_str, new_str;
- */
-extern char *strtok_r(char * restrict s, char const * restrict delim,
-                      char ** restrict saveptr);
-
-/*@ requires valid_stringp: \valid(stringp);
-    assigns *(*(stringp + (0 ..))), \result;
-    assigns *(*(stringp + (0 ..)))
-      \from (indirect: *(delim + (0 .. strlen{Old}(delim)))),
-            *(*(stringp + (0 ..)));
-    assigns \result \from *stringp;
-    
-    behavior no_stringp:
-      assumes stringp_null: *stringp ≡ \null;
-      ensures result_null: \result ≡ \null;
-    
-    behavior valid_stringp:
-      assumes stringp_not_null: *stringp ≢ \null;
-      requires valid_string_stringp: valid_string(*stringp);
-      ensures
-        valid_result:
-          valid_string(\result) ∧
-          \base_addr(\result) ≡ \base_addr(*\old(stringp));
- */
-extern char *strsep(char **stringp, char const *delim);
-
-char __fc_strerror[64];
-char * const __fc_p_strerror = __fc_strerror;
-char *strerror(int errnum);
-
-char *strcpy(char *dest, char const *src);
-
-char *strncpy(char *dest, char const *src, size_t n);
-
-/*@ requires valid_string_src: valid_read_string(src);
-    requires room_nstring: \valid(dest + (0 .. n - 1));
-    requires
-      separation:
-        \separated(
-          dest + (0 .. n - 1), src + (0 .. \max(n - 1, strlen(src)))
-          );
-    ensures
-      initialization:
-        \initialized(\old(dest) + (0 .. \min(strlen(\old(src)), \old(n) - 1)));
-    ensures bounded_result: \result ≡ strlen(\old(src));
-    assigns *(dest + (0 .. n - 1)), \result;
-    assigns *(dest + (0 .. n - 1)) \from *(src + (0 .. n - 1));
-    assigns \result
-      \from (indirect: src), (indirect: *(src + (0 .. n - 1))), (indirect: n);
- */
-size_t strlcpy(char * restrict dest, char const * restrict src, size_t n);
-
-char *stpcpy(char *dest, char const *src);
-
-char *strcat(char *dest, char const *src);
-
-char *strncat(char *dest, char const *src, size_t n);
-
-/*@ requires valid_string_src: valid_read_string(src);
-    requires valid_string_dest: valid_string(dest);
-    requires room_nstring: \valid(dest + (0 .. n - 1));
-    requires
-      separation:
-        \separated(
-          dest + (0 .. \min(n - 1, strlen(dest) + strlen(src))),
-          src + (0 .. strnlen(src, n - 1))
-          );
-    ensures
-      bounded_result: \result ≡ strlen(\old(dest)) + strlen(\old(src));
-    assigns *(dest + (strlen{Old}(dest) .. n)), \result;
-    assigns *(dest + (strlen{Old}(dest) .. n))
-      \from (indirect: n), *(src + (0 .. strlen{Old}(src)));
-    assigns \result
-      \from (indirect: src), (indirect: *(src + (0 .. n - 1))), (indirect: n);
- */
-extern size_t strlcat(char * restrict dest, char const * restrict src,
-                      size_t n);
-
-/*@ requires valid_dest: \valid(dest + (0 .. n - 1));
-    requires valid_string_src: valid_read_string(src);
-    requires
-      separation: \separated(dest + (0 .. n - 1), src + (0 .. strlen(src)));
-    assigns *(dest + (0 .. n - 1)), \result;
-    assigns *(dest + (0 .. n - 1))
-      \from *(src + (0 .. strlen{Old}(src))), (indirect: n);
-    assigns \result \from (indirect: *(src + (0 .. strlen{Old}(src))));
- */
-extern size_t strxfrm(char * restrict dest, char const * restrict src,
-                      size_t n);
-
-/*@ requires
-      valid_haystack: \valid_read((char *)haystack + (0 .. haystacklen - 1));
-    requires
-      valid_needle: \valid_read((char *)needle + (0 .. needlelen - 1));
-    ensures
-      result_null_or_valid:
-        \result ≡ \null ∨ \valid_read((char *)\result);
-    ensures
-      result_null_or_same_base:
-        \result ≡ \null ∨
-        \base_addr(\result) ≡ \base_addr(\old(haystack));
-    assigns \result;
-    assigns \result
-      \from haystack,
-            (indirect: *((char *)haystack + (0 .. haystacklen - 1))),
-            (indirect: *((char *)needle + (0 .. needlelen - 1)));
- */
-extern void *memmem(void const *haystack, size_t haystacklen,
-                    void const *needle, size_t needlelen);
-
-char *strdup(char const *s);
-
-char *strndup(char const *s, size_t n);
-
-/*@ requires valid_string_src: valid_read_nstring(src, n);
-    requires valid_dest: \valid(dest + (0 .. n - 1));
-    requires separation: \separated(src + (0 .. n - 1), dest + (0 .. n - 1));
-    ensures initialization: \initialized(\old(dest) + (0 .. \old(n) - 1));
-    assigns *(dest + (0 .. n - 1)), \result;
-    assigns *(dest + (0 .. n - 1))
-      \from *(src + (0 .. n - 1)), (indirect: n);
-    assigns \result
-      \from dest, (indirect: *(src + (0 .. n - 1))), (indirect: n);
-    
-    behavior src_is_a_string:
-      assumes src_has_nul: strlen(src) < n;
-      ensures valid_string_dest: valid_read_string(\old(dest));
-      ensures same_contents: strcmp(\old(dest), \old(src)) ≡ 0;
-      ensures
-        dest_nul_padded:
-          ∀ ℤ i;
-            strlen(\old(src)) ≤ i < \old(n) ⇒ *(\old(dest) + i) ≡ 0;
-      ensures
-        result_points_to_nul: \result ≡ \old(dest) + strlen(\old(src));
-    
-    behavior src_too_long:
-      assumes src_no_nul: ∀ ℤ i; 0 ≤ i < n ⇒ *(src + i) ≢ 0;
-      ensures
-        same_partial_contents: strncmp(\old(src), \old(dest), \old(n)) ≡ 0;
-      ensures result_points_to_end: \result ≡ \old(dest) + \old(n);
- */
-extern char *stpncpy(char * restrict dest, char const * restrict src,
-                     size_t n);
-
-char __fc_strsignal[64];
-char * const __fc_p_strsignal = __fc_strsignal;
-char *strsignal(int signum);
-
-/*@ requires valid_memory_area: \valid((char *)s + (0 .. n - 1));
-    ensures
-      s_initialized: initialization:
-        \initialized((char *)\old(s) + (0 .. \old(n) - 1));
-    ensures
-      zero_initialized: \subset(*((char *)\old(s) + (0 .. \old(n) - 1)), {0});
-    assigns *((char *)s + (0 .. n - 1));
-    assigns *((char *)s + (0 .. n - 1)) \from \nothing;
- */
-extern void bzero(void *s, size_t n);
-
-int strcasecmp(char const *s1, char const *s2);
-
-/*@ requires valid_string_s1: valid_read_nstring(s1, n);
-    requires valid_string_s2: valid_read_nstring(s2, n);
-    assigns \result;
-    assigns \result
-      \from (indirect: n), (indirect: *(s1 + (0 .. n - 1))),
-            (indirect: *(s2 + (0 .. n - 1)));
- */
-extern int strncasecmp(char const *s1, char const *s2, size_t n);
-
-error_t argz_create(char * const *argv, char **argz, size_t *len);
-
-error_t argz_create_sep(char const *string, int delim, char **argz,
-                        size_t *len);
-
-size_t argz_count(char const *argz, size_t len);
-
-void argz_extract(char const *argz, size_t len, char **argv);
-
-void argz_stringify(char *argz, size_t len, int sep);
-
-error_t argz_append(char **argz, size_t *argz_len, char const *buf,
-                    size_t buf_len);
-
-error_t argz_add(char **argz, size_t *argz_len, char const *str);
-
-error_t argz_add_sep(char **argz, size_t *argz_len, char const *string,
-                     int delim);
-
-void argz_delete(char **argz, size_t *argz_len, char *entry);
-
-error_t argz_insert(char **argz, size_t *argz_len, char *before,
-                    char const *entry);
-
-error_t argz_replace(char **argz, size_t *argz_len, char const *str,
-                     char const *with, unsigned int *replace_count);
-
-char *argz_next(char const *argz, size_t argz_len, char const *entry);
-
-/*@ assigns *(argz + (0 ..));
-    assigns *(argz + (0 ..)) \from *(argz + (0 ..)), (indirect: len), sep;
- */
-void argz_stringify(char *argz, size_t len, int sep)
-{
-  if (len > (size_t)0) 
-    while (1) {
-      {
-        size_t tmp_0;
-        char *tmp_1;
-        size_t part_len = strnlen((char const *)argz,len);
-        argz += part_len;
-        len -= part_len;
-        tmp_0 = len;
-        len --;
-        ;
-        if (tmp_0 <= (size_t)1) break;
-        tmp_1 = argz;
-        argz ++;
-        *tmp_1 = (char)sep;
-      }
-    }
-  return;
-}
-
-/*@ assigns *to, *to_len, *(*(to + (0 .. \old(*to_len) + buf_len)));
-    assigns *to \from *to, (indirect: *to_len), (indirect: buf_len);
-    assigns *to_len \from *to_len, buf_len;
-    assigns *(*(to + (0 .. \old(*to_len) + buf_len)))
-      \from *(*(to + (0 .. \old(*to_len)))), *(buf + (0 .. buf_len));
- */
-static void str_append(char **to, size_t *to_len, char const *buf,
-                       size_t const buf_len)
-{
-  size_t new_len = *to_len + buf_len;
-  char *new_to = realloc((void *)*to,new_len + (size_t)1);
-  if (new_to) {
-    void *tmp_0;
-    tmp_0 = mempcpy((void *)(new_to + *to_len),(void const *)buf,buf_len);
-    *((char *)tmp_0) = (char)'\000';
-    *to = new_to;
-    *to_len = new_len;
-  }
-  else {
-    free((void *)*to);
-    *to = (char *)0;
-  }
-  return;
-}
-
-/*@ assigns *(*argz + (0 ..)), *argz_len, *replace_count, \result;
-    assigns *(*argz + (0 ..))
-      \from *(*argz + (0 ..)), *argz_len, *(str + (0 ..)), *(with + (0 ..)),
-            *replace_count;
-    assigns *argz_len
-      \from *(*argz + (0 ..)), *argz_len, *(str + (0 ..)), *(with + (0 ..)),
-            *replace_count;
-    assigns *replace_count
-      \from *(*argz + (0 ..)), *argz_len, *(str + (0 ..)), *(with + (0 ..)),
-            *replace_count;
-    assigns \result
-      \from *(*argz + (0 ..)), *argz_len, *(str + (0 ..)), *(with + (0 ..)),
-            *replace_count;
-    allocates *\old(argz);
- */
-error_t argz_replace(char **argz, size_t *argz_len, char const *str,
-                     char const *with, unsigned int *replace_count)
-{
-  error_t er = 0;
-  if (str) 
-    if (*str) {
-      char *arg = (char *)0;
-      char *src = *argz;
-      size_t src_len = *argz_len;
-      char *dst = (char *)0;
-      size_t dst_len = (size_t)0;
-      int delayed_copy = 1;
-      size_t str_len = strlen(str);
-      size_t with_len = strlen(with);
-      while (1) {
-        if (! er) {
-          arg = argz_next((char const *)src,src_len,(char const *)arg);
-          if (! arg) break;
-        }
-        else break;
-        {
-          char *match = strstr((char const *)arg,str);
-          if (match) {
-            char *from = match + str_len;
-            size_t to_len = (size_t)(match - arg);
-            char *to = strndup((char const *)arg,to_len);
-            while (1) {
-              if (to) {
-                if (! from) break;
-              }
-              else break;
-              str_append(& to,& to_len,with,with_len);
-              if (to) {
-                match = strstr((char const *)from,str);
-                if (match) {
-                  str_append(& to,& to_len,(char const *)from,
-                             (size_t)(match - from));
-                  from = match + str_len;
-                }
-                else {
-                  size_t tmp_3;
-                  tmp_3 = strlen((char const *)from);
-                  ;
-                  str_append(& to,& to_len,(char const *)from,tmp_3);
-                  from = (char *)0;
-                }
-              }
-            }
-            if (to) {
-              if (delayed_copy) {
-                if (arg > src) er = argz_append(& dst,& dst_len,
-                                                (char const *)src,
-                                                (size_t)(arg - src));
-                delayed_copy = 0;
-              }
-              if (! er) er = argz_add(& dst,& dst_len,(char const *)to);
-              free((void *)to);
-            }
-            else er = 12;
-            if (replace_count) (*replace_count) ++;
-          }
-          else 
-            if (! delayed_copy) er = argz_add(& dst,& dst_len,
-                                              (char const *)arg);
-        }
-      }
-      if (! er) {
-        if (! delayed_copy) {
-          free((void *)src);
-          *argz = dst;
-          *argz_len = dst_len;
-        }
-      }
-      else 
-        if (dst_len > (size_t)0) free((void *)dst);
-    }
-  return er;
-}
-
-/*@ assigns \result;
-    assigns \result \from *(argz + (0 ..)), argz_len, entry;
- */
-char *argz_next(char const *argz, size_t argz_len, char const *entry)
-{
-  char *__retres;
-  if (entry) {
-    char *tmp_0;
-    if (entry < argz + argz_len) {
-      char *tmp;
-      tmp = strchr(entry,'\000');
-      entry = (char const *)(tmp + 1);
-    }
-    if (entry >= argz + argz_len) tmp_0 = (char *)0;
-    else tmp_0 = (char *)entry;
-    __retres = tmp_0;
-    goto return_label;
-  }
-  else 
-    if (argz_len > (size_t)0) {
-      __retres = (char *)argz;
-      goto return_label;
-    }
-    else {
-      __retres = (char *)0;
-      goto return_label;
-    }
-  return_label: return __retres;
-}
-
-/*@ assigns *(*argz + (0 ..)), *argz_len, \result;
-    assigns *(*argz + (0 ..))
-      \from *(*argz + (0 ..)), *argz_len, before, *(before + (0 ..)),
-            *(entry + (0 ..));
-    assigns *argz_len
-      \from *(*argz + (0 ..)), *argz_len, before, *(before + (0 ..)),
-            *(entry + (0 ..));
-    assigns \result
-      \from *(*argz + (0 ..)), *argz_len, before, *(before + (0 ..)),
-            *(entry + (0 ..));
-    allocates *\old(argz);
- */
-error_t argz_insert(char **argz, size_t *argz_len, char *before,
-                    char const *entry)
-{
-  error_t __retres;
-  if (! before) {
-    error_t tmp;
-    tmp = argz_add(argz,argz_len,entry);
-    __retres = tmp;
-    goto return_label;
-  }
-  if (before < *argz) {
-    __retres = 22;
-    goto return_label;
-  }
-  else 
-    if (before >= *argz + *argz_len) {
-      __retres = 22;
-      goto return_label;
-    }
-  if (before > *argz) 
-    while (*(before + -1)) before --;
-  {
-    size_t tmp_0;
-    size_t after_before = *argz_len - (size_t)(before - *argz);
-    tmp_0 = strlen(entry);
-    size_t entry_len = tmp_0 + (size_t)1;
-    size_t new_argz_len = *argz_len + entry_len;
-    ptrdiff_t before_offset = before - *argz;
-    char *new_argz = realloc((void *)*argz,new_argz_len);
-    if (new_argz) {
-      before = new_argz + before_offset;
-      memmove((void *)(before + entry_len),(void const *)before,after_before);
-      memmove((void *)before,(void const *)entry,entry_len);
-      *argz = new_argz;
-      *argz_len = new_argz_len;
-      __retres = 0;
-      goto return_label;
-    }
-    else {
-      __retres = 12;
-      goto return_label;
-    }
-    return_label: return __retres;
-  }
-}
-
-/*@ assigns *(*(argv + (0 ..)) + (0 ..));
-    assigns *(*(argv + (0 ..)) + (0 ..))
-      \from *(argz + (0 .. len)), (indirect: len);
- */
-void argz_extract(char const *argz, size_t len, char **argv)
-{
-  while (len > (size_t)0) {
-    char **tmp_0;
-    size_t part_len = strlen(argz);
-    tmp_0 = argv;
-    argv ++;
-    *tmp_0 = (char *)argz;
-    argz += part_len + (size_t)1;
-    len -= part_len + (size_t)1;
-  }
-  *argv = (char *)0;
-  return;
-}
-
-/*@ assigns *(*argz + (0 ..)), *argz_len;
-    assigns *(*argz + (0 ..))
-      \from *(*argz + (0 ..)), *argz_len, *(entry + (0 ..));
-    assigns *argz_len \from *(*argz + (0 ..)), *argz_len, *(entry + (0 ..));
-    frees *argz;
- */
-void argz_delete(char **argz, size_t *argz_len, char *entry)
-{
-  if (entry) {
-    size_t tmp;
-    tmp = strlen((char const *)entry);
-    size_t entry_len = tmp + (size_t)1;
-    *argz_len -= entry_len;
-    memmove((void *)entry,(void const *)(entry + entry_len),
-            *argz_len - (size_t)(entry - *argz));
-    if (*argz_len == (size_t)0) {
-      free((void *)*argz);
-      *argz = (char *)0;
-    }
-  }
-  return;
-}
-
-/*@ assigns *(*argz + (0 ..)), *len, \result;
-    assigns *(*argz + (0 ..))
-      \from *(string + (0 ..)), delim, *(*argz + (0 ..)), *len;
-    assigns *len \from *(string + (0 ..)), delim, *(*argz + (0 ..)), *len;
-    assigns \result \from *(string + (0 ..)), delim, *(*argz + (0 ..)), *len;
-    allocates *\old(argz);
- */
-error_t argz_create_sep(char const *string, int delim, char **argz,
-                        size_t *len)
-{
-  error_t __retres;
-  size_t tmp;
-  tmp = strlen(string);
-  size_t nlen = tmp + (size_t)1;
-  if (nlen > (size_t)1) {
-    char const *rp;
-    char *wp;
-    *argz = (char *)malloc(nlen);
-    if (*argz == (char *)0) {
-      __retres = 12;
-      goto return_label;
-    }
-    rp = string;
-    wp = *argz;
-    while (1) {
-      char const *tmp_3;
-      if ((int)*rp == delim) 
-        if (wp > *argz) 
-          if ((int)*(wp + -1) != '\000') {
-            char *tmp_1;
-            tmp_1 = wp;
-            wp ++;
-            *tmp_1 = (char)'\000';
-          }
-          else nlen --;
-        else nlen --;
-      else {
-        char *tmp_2;
-        tmp_2 = wp;
-        wp ++;
-        *tmp_2 = *rp;
-      }
-      tmp_3 = rp;
-      rp ++;
-      ;
-      if (! ((int)*tmp_3 != '\000')) break;
-    }
-    if (nlen == (size_t)0) {
-      free((void *)*argz);
-      *argz = (char *)0;
-      *len = (size_t)0;
-    }
-    *len = nlen;
-  }
-  else {
-    *argz = (char *)0;
-    *len = (size_t)0;
-  }
-  __retres = 0;
-  return_label: return __retres;
-}
-
-/*@ assigns *(*argz + (0 ..)), *len, \result;
-    assigns *(*argz + (0 ..)) \from *(*(argv + (0 ..)) + (0 ..));
-    assigns *len \from *(*(argv + (0 ..)) + (0 ..));
-    assigns \result \from *(*(argv + (0 ..)) + (0 ..));
-    allocates *\old(argz);
- */
-error_t argz_create(char * const *argv, char **argz, size_t *len)
-{
-  error_t __retres;
-  int argc;
-  char * const *ap;
-  char *p;
-  size_t tlen = (size_t)0;
-  argc = 0;
-  while (*(argv + argc) != (char *)0) {
-    size_t tmp;
-    tmp = strlen((char const *)*(argv + argc));
-    tlen += tmp + (size_t)1;
-    argc ++;
-  }
-  if (tlen == (size_t)0) *argz = (char *)0;
-  else {
-    *argz = (char *)malloc(tlen);
-    if (*argz == (char *)0) {
-      __retres = 12;
-      goto return_label;
-    }
-    p = *argz;
-    ap = argv;
-    while (*ap) {
-      p = stpcpy(p,(char const *)*ap);
-      ap ++;
-      p ++;
-    }
-  }
-  *len = tlen;
-  __retres = 0;
-  return_label: return __retres;
-}
-
-/*@ assigns \result;
-    assigns \result
-      \from (indirect: *(argz + (0 .. strlen{Old}(argz)))), (indirect: len);
- */
-size_t argz_count(char const *argz, size_t len)
-{
-  size_t count = (size_t)0;
-  while (len > (size_t)0) {
-    size_t part_len = strlen(argz);
-    argz += part_len + (size_t)1;
-    len -= part_len + (size_t)1;
-    count ++;
-  }
-  return count;
-}
-
-/*@ assigns *(*argz + (0 ..)), *argz_len, \result;
-    assigns *(*argz + (0 ..))
-      \from *(*argz + (0 ..)), *argz_len, *(buf + (0 ..)), buf_len;
-    assigns *argz_len
-      \from *(*argz + (0 ..)), *argz_len, *(buf + (0 ..)), buf_len;
-    assigns \result
-      \from (indirect: *(*argz + (0 ..))), (indirect: *argz_len),
-            (indirect: *(buf + (0 ..))), (indirect: buf_len);
-    allocates *\old(argz);
- */
-error_t argz_append(char **argz, size_t *argz_len, char const *buf,
-                    size_t buf_len)
-{
-  error_t __retres;
-  size_t new_argz_len = *argz_len + buf_len;
-  char *new_argz = realloc((void *)*argz,new_argz_len);
-  if (new_argz) {
-    memcpy((void *)(new_argz + *argz_len),(void const *)buf,buf_len);
-    *argz = new_argz;
-    *argz_len = new_argz_len;
-    __retres = 0;
-    goto return_label;
-  }
-  else {
-    __retres = 12;
-    goto return_label;
-  }
-  return_label: return __retres;
-}
-
-/*@ assigns *(*argz + (0 ..)), *argz_len, \result;
-    assigns *(*argz + (0 ..))
-      \from *(*argz + (0 ..)), *argz_len, *(str + (0 ..));
-    assigns *argz_len \from *(*argz + (0 ..)), *argz_len, *(str + (0 ..));
-    assigns \result \from *(*argz + (0 ..)), *argz_len, *(str + (0 ..));
-    allocates *\old(argz);
- */
-error_t argz_add(char **argz, size_t *argz_len, char const *str)
-{
-  error_t tmp_0;
-  size_t tmp;
-  tmp = strlen(str);
-  ;
-  ;
-  ;
-  tmp_0 = argz_append(argz,argz_len,str,tmp + (size_t)1);
-  return tmp_0;
-}
-
-/*@ assigns *(*argz + (0 ..)), *argz_len, \result;
-    assigns *(*argz + (0 ..)) \from *(string + (0 ..)), delim;
-    assigns *argz_len \from *(string + (0 ..)), delim;
-    assigns \result \from *(string + (0 ..)), delim;
-    allocates *\old(argz);
- */
-error_t argz_add_sep(char **argz, size_t *argz_len, char const *string,
-                     int delim)
-{
-  error_t __retres;
-  size_t tmp;
-  tmp = strlen(string);
-  size_t nlen = tmp + (size_t)1;
-  if (nlen > (size_t)1) {
-    char const *rp;
-    char *wp;
-    *argz = (char *)realloc((void *)*argz,*argz_len + nlen);
-    if (*argz == (char *)0) {
-      __retres = 12;
-      goto return_label;
-    }
-    wp = *argz + *argz_len;
-    rp = string;
-    while (1) {
-      char const *tmp_3;
-      if ((int)*rp == delim) 
-        if (wp > *argz) 
-          if ((int)*(wp + -1) != '\000') {
-            char *tmp_1;
-            tmp_1 = wp;
-            wp ++;
-            *tmp_1 = (char)'\000';
-          }
-          else nlen --;
-        else nlen --;
-      else {
-        char *tmp_2;
-        tmp_2 = wp;
-        wp ++;
-        *tmp_2 = *rp;
-      }
-      tmp_3 = rp;
-      rp ++;
-      ;
-      if (! ((int)*tmp_3 != '\000')) break;
-    }
-    *argz_len += nlen;
-  }
-  __retres = 0;
-  return_label: return __retres;
-}
-
-void __FC_assert(int c, char const *file, int line, char const *expr);
-
-/*@ assigns \nothing; */
-extern void Frama_C_show_each_warning();
-
-/*@ requires nonnull_c: c ≢ 0;
-    assigns \nothing; */
-void __FC_assert(int c, char const *file, int line, char const *expr)
-{
-  if (! c) {
-    Frama_C_show_each_warning("Assertion may fail",file,line,expr);
-    Frama_C_abort();
-  }
-  return;
-}
-
-int isalnum(int c);
-
-int isalpha(int c);
-
-int isblank(int c);
-
-int iscntrl(int c);
-
-int isdigit(int c);
-
-int isgraph(int c);
-
-int islower(int c);
-
-int isprint(int c);
-
-int ispunct(int c);
-
-int isspace(int c);
-
-int isupper(int c);
-
-int isxdigit(int c);
-
-int tolower(int c);
-
-int toupper(int c);
-
-/*@ requires c_uchar_or_eof: (0 ≤ c ≤ 255) ∨ c ≡ -1;
-    assigns \result;
-    assigns \result \from c;
-    
-    behavior match:
-      assumes c_ascii: 0 ≤ c ≤ 127;
-      ensures nonzero_result: \result < 0 ∨ \result > 0;
-    
-    behavior no_match:
-      assumes c_non_ascii: ¬(0 ≤ c ≤ 127);
-      ensures zero_result: \result ≡ 0;
-    
-    complete behaviors no_match, match;
-    disjoint behaviors no_match, match;
- */
-extern int isascii(int c);
-
-/*@ requires c_uchar_or_eof_or_EOF: (0 ≤ c ≤ 255) ∨ c ≡ -1;
-    assigns \result;
-    assigns \result \from c;
-    
-    behavior definitely_match:
-      assumes
-        c_alnum:
-          ('A' ≤ c ≤ 'Z') ∨ ('a' ≤ c ≤ 'z') ∨ ('0' ≤ c ≤ '9');
-      ensures nonzero_result: \result < 0 ∨ \result > 0;
-    
-    behavior definitely_not_match:
-      assumes
-        c_non_alnum:
-          c ≡ -1 ∨ (0 ≤ c ≤ 47) ∨ (58 ≤ c ≤ 64) ∨
-          (91 ≤ c ≤ 96) ∨ (123 ≤ c ≤ 127);
-      ensures zero_result: \result ≡ 0;
-    
-    disjoint behaviors definitely_not_match, definitely_match;
- */
-int isalnum(int c)
-{
-  int tmp;
-  if (c >= 'A') {
-    if (c <= 'Z') tmp = 1; else goto _LAND_0;
-  }
-  else {
-    _LAND_0: ;
-    if (c >= 'a') {
-      if (c <= 'z') tmp = 1; else goto _LAND;
-    }
-    else {
-      _LAND: ;
-      if (c >= '0') 
-        if (c <= '9') tmp = 1; else tmp = 0;
-      else tmp = 0;
-    }
-  }
-  return tmp;
-}
-
-/*@ requires c_uchar_or_eof: (0 ≤ c ≤ 255) ∨ c ≡ -1;
-    assigns \result;
-    assigns \result \from c;
-    
-    behavior definitely_match:
-      assumes c_alpha: ('A' ≤ c ≤ 'Z') ∨ ('a' ≤ c ≤ 'z');
-      ensures nonzero_result: \result < 0 ∨ \result > 0;
-    
-    behavior definitely_not_match:
-      assumes
-        c_non_alpha:
-          c ≡ -1 ∨ (0 ≤ c ≤ 64) ∨ (91 ≤ c ≤ 96) ∨
-          (123 ≤ c ≤ 127);
-      ensures zero_result: \result ≡ 0;
-    
-    disjoint behaviors definitely_not_match, definitely_match;
- */
-int isalpha(int c)
-{
-  int tmp;
-  if (c >= 'A') {
-    if (c <= 'Z') tmp = 1; else goto _LAND;
-  }
-  else {
-    _LAND: ;
-    if (c >= 'a') 
-      if (c <= 'z') tmp = 1; else tmp = 0;
-    else tmp = 0;
-  }
-  return tmp;
-}
-
-/*@ requires c_uchar_or_eof: (0 ≤ c ≤ 255) ∨ c ≡ -1;
-    assigns \result;
-    assigns \result \from c;
-    
-    behavior match:
-      assumes c_tab_or_space: c ≡ ' ' ∨ c ≡ '\t';
-      ensures nonzero_result: \result < 0 ∨ \result > 0;
-    
-    behavior no_match:
-      assumes c_non_blank: c ≢ ' ' ∧ c ≢ '\t';
-      ensures zero_result: \result ≡ 0;
-    
-    complete behaviors no_match, match;
-    disjoint behaviors no_match, match;
- */
-int isblank(int c)
-{
-  int tmp;
-  if (c == ' ') tmp = 1;
-  else 
-    if (c == '\t') tmp = 1;
-    else 
-      if (c == ' ') tmp = 1;
-      else 
-        if (c == '\f') tmp = 1;
-        else 
-          if (c == '\n') tmp = 1;
-          else 
-            if (c == '\r') tmp = 1;
-            else 
-              if (c == '\t') tmp = 1;
-              else 
-                if (c == '\v') tmp = 1; else tmp = 0;
-  return tmp;
-}
-
-/*@ requires c_uchar_or_eof: (0 ≤ c ≤ 255) ∨ c ≡ -1;
-    assigns \result;
-    assigns \result \from c;
-    
-    behavior definitely_match:
-      assumes c_control_char: (0 ≤ c ≤ 31) ∨ c ≡ 127;
-      ensures nonzero_result: \result < 0 ∨ \result > 0;
-    
-    behavior definitely_not_match:
-      assumes c_non_control_char: c ≡ -1 ∨ (32 ≤ c ≤ 126);
-      ensures zero_result: \result ≡ 0;
-    
-    disjoint behaviors definitely_not_match, definitely_match;
- */
-int iscntrl(int c)
-{
-  int tmp;
-  tmp = Frama_C_nondet(0,1);
-  return tmp;
-}
-
-/*@ requires c_uchar_or_eof: (0 ≤ c ≤ 255) ∨ c ≡ -1;
-    assigns \result;
-    assigns \result \from c;
-    
-    behavior match:
-      assumes c_digit: '0' ≤ c ≤ '9';
-      ensures nonzero_result: \result < 0 ∨ \result > 0;
-    
-    behavior no_match:
-      assumes c_non_digit: c < '0' ∨ c > '9';
-      ensures zero_result: \result ≡ 0;
-    
-    complete behaviors no_match, match;
-    disjoint behaviors no_match, match;
- */
-int isdigit(int c)
-{
-  int tmp;
-  if (c >= '0') 
-    if (c <= '9') tmp = 1; else tmp = 0;
-  else tmp = 0;
-  return tmp;
-}
-
-/*@ requires c_uchar_or_eof: (0 ≤ c ≤ 255) ∨ c ≡ -1;
-    assigns \result;
-    assigns \result \from c;
-    
-    behavior definitely_match:
-      assumes c_graphical: 33 ≤ c ≤ 126;
-      ensures nonzero_result: \result < 0 ∨ \result > 0;
-    
-    behavior definitely_not_match:
-      assumes c_non_graphical: c ≡ -1 ∨ (0 ≤ c ≤ 32) ∨ c ≡ 127;
-      ensures zero_result: \result ≡ 0;
-    
-    disjoint behaviors definitely_not_match, definitely_match;
- */
-int isgraph(int c)
-{
-  int tmp;
-  tmp = Frama_C_nondet(0,1);
-  return tmp;
-}
-
-/*@ requires c_uchar_or_eof: (0 ≤ c ≤ 255) ∨ c ≡ -1;
-    assigns \result;
-    assigns \result \from c;
-    
-    behavior definitely_match:
-      assumes c_lower: 'a' ≤ c ≤ 'z';
-      ensures nonzero_result: \result < 0 ∨ \result > 0;
-    
-    behavior definitely_not_match:
-      assumes c_non_lower: c ≡ -1 ∨ (0 ≤ c < 'a') ∨ ('z' < c < 127);
-      ensures zero_result: \result ≡ 0;
-    
-    disjoint behaviors definitely_not_match, definitely_match;
- */
-int islower(int c)
-{
-  int tmp;
-  if (c >= 'a') 
-    if (c <= 'z') tmp = 1; else tmp = 0;
-  else tmp = 0;
-  return tmp;
-}
-
-/*@ requires c_uchar_or_eof: (0 ≤ c ≤ 255) ∨ c ≡ -1;
-    assigns \result;
-    assigns \result \from c;
-    
-    behavior definitely_match:
-      assumes c_printable: 32 ≤ c ≤ 126;
-      ensures nonzero_result: \result < 0 ∨ \result > 0;
-    
-    behavior definitely_not_match:
-      assumes c_non_printable: c ≡ -1 ∨ (0 ≤ c ≤ 31) ∨ c ≡ 127;
-      ensures zero_result: \result ≡ 0;
-    
-    disjoint behaviors definitely_not_match, definitely_match;
- */
-int isprint(int c)
-{
-  int tmp;
-  tmp = Frama_C_nondet(0,1);
-  return tmp;
-}
-
-/*@ requires c_uchar_or_eof: (0 ≤ c ≤ 255) ∨ c ≡ -1;
-    assigns \result;
-    assigns \result \from c;
-    
-    behavior definitely_match:
-      assumes
-        c_punct:
-          (33 ≤ c ≤ 47) ∨ (58 ≤ c ≤ 64) ∨ (91 ≤ c ≤ 96) ∨
-          (123 ≤ c ≤ 126);
-      ensures nonzero_result: \result < 0 ∨ \result > 0;
-    
-    behavior definitely_not_match:
-      assumes
-        c_non_punct:
-          c ≡ -1 ∨ (0 ≤ c ≤ 32) ∨ (48 ≤ c ≤ 57) ∨
-          (65 ≤ c ≤ 90) ∨ (97 ≤ c ≤ 122) ∨ c ≡ 127;
-      ensures zero_result: \result ≡ 0;
-    
-    disjoint behaviors definitely_not_match, definitely_match;
- */
-int ispunct(int c)
-{
-  int tmp;
-  tmp = Frama_C_nondet(0,1);
-  return tmp;
-}
-
-/*@ requires c_uchar_or_eof: (0 ≤ c ≤ 255) ∨ c ≡ -1;
-    assigns \result;
-    assigns \result \from c;
-    
-    behavior definitely_match:
-      assumes c_space: (9 ≤ c ≤ 13) ∨ c ≡ ' ';
-      ensures nonzero_result: \result < 0 ∨ \result > 0;
-    
-    behavior definitely_not_match:
-      assumes
-        c_non_space:
-          c ≡ -1 ∨ (0 ≤ c ≤ 8) ∨ (14 ≤ c < ' ') ∨
-          (' ' < c ≤ 127);
-      ensures zero_result: \result ≡ 0;
-    
-    disjoint behaviors definitely_not_match, definitely_match;
- */
-int isspace(int c)
-{
-  int tmp;
-  if (c == ' ') tmp = 1;
-  else 
-    if (c == '\f') tmp = 1;
-    else 
-      if (c == '\n') tmp = 1;
-      else 
-        if (c == '\r') tmp = 1;
-        else 
-          if (c == '\t') tmp = 1;
-          else 
-            if (c == '\v') tmp = 1; else tmp = 0;
-  return tmp;
-}
-
-/*@ requires c_uchar_or_eof: (0 ≤ c ≤ 255) ∨ c ≡ -1;
-    assigns \result;
-    assigns \result \from c;
-    
-    behavior definitely_match:
-      assumes c_upper: 'A' ≤ c ≤ 'Z';
-      ensures nonzero_result: \result < 0 ∨ \result > 0;
-    
-    behavior definitely_not_match:
-      assumes
-        c_non_upper: c ≡ -1 ∨ (0 ≤ c < 'A') ∨ ('Z' < c ≤ 127);
-      ensures zero_result: \result ≡ 0;
-    
-    disjoint behaviors definitely_not_match, definitely_match;
- */
-int isupper(int c)
-{
-  int tmp;
-  if (c >= 'A') 
-    if (c <= 'Z') tmp = 1; else tmp = 0;
-  else tmp = 0;
-  return tmp;
-}
-
-/*@ requires c_uchar_or_eof: (0 ≤ c ≤ 255) ∨ c ≡ -1;
-    assigns \result;
-    assigns \result \from c;
-    
-    behavior match:
-      assumes
-        c_hexa_digit:
-          ('0' ≤ c ≤ '9') ∨ ('A' ≤ c ≤ 'F') ∨ ('a' ≤ c ≤ 'f');
-      ensures nonzero_result: \result < 0 ∨ \result > 0;
-    
-    behavior no_match:
-      assumes
-        c_non_hexa_digit:
-          ¬(('0' ≤ c ≤ '9') ∨ ('A' ≤ c ≤ 'F') ∨
-             ('a' ≤ c ≤ 'f'));
-      ensures zero_result: \result ≡ 0;
-    
-    complete behaviors no_match, match;
-    disjoint behaviors no_match, match;
- */
-int isxdigit(int c)
-{
-  int tmp;
-  if (c >= '0') {
-    if (c <= '9') tmp = 1; else goto _LAND_0;
-  }
-  else {
-    _LAND_0: ;
-    if (c >= 'a') {
-      if (c <= 'f') tmp = 1; else goto _LAND;
-    }
-    else {
-      _LAND: ;
-      if (c >= 'A') 
-        if (c <= 'F') tmp = 1; else tmp = 0;
-      else tmp = 0;
-    }
-  }
-  return tmp;
-}
-
-/*@ requires c_uchar_or_eof: (0 ≤ c ≤ 255) ∨ c ≡ -1;
-    ensures result_uchar_of_eof: (0 ≤ \result ≤ 255) ∨ \result ≡ -1;
-    assigns \result;
-    assigns \result \from c;
-    
-    behavior definitely_changed:
-      assumes c_ascii_upper: 'A' ≤ c ≤ 'Z';
-      ensures result_ascii_lower: \result ≡ \old(c) + 32;
-    
-    behavior definitely_not_changed:
-      assumes
-        c_ascii_but_non_upper:
-          c ≡ -1 ∨ (0 ≤ c < 'A') ∨ ('Z' < c ≤ 127);
-      ensures result_unchanged: \result ≡ \old(c);
-    
-    disjoint behaviors definitely_not_changed, definitely_changed;
- */
-int tolower(int c)
-{
-  int __retres;
-  if (c >= 'A') 
-    if (c <= 'Z') {
-      __retres = c + 0x20;
-      goto return_label;
-    }
-  __retres = c;
-  return_label: return __retres;
-}
-
-/*@ requires c_uchar_of_eof: (0 ≤ c ≤ 255) ∨ c ≡ -1;
-    ensures result_uchar_of_eof: (0 ≤ \result ≤ 255) ∨ \result ≡ -1;
-    assigns \result;
-    assigns \result \from c;
-    
-    behavior definitely_changed:
-      assumes c_ascii_lower: 'a' ≤ c ≤ 'z';
-      ensures result_ascii_upper: \result ≡ \old(c) - 32;
-    
-    behavior definitely_not_changed:
-      assumes
-        c_ascii_but_non_lower:
-          c ≡ -1 ∨ (0 ≤ c < 'a') ∨ ('z' < c ≤ 127);
-      ensures result_unchanged: \result ≡ \old(c);
-    
-    disjoint behaviors definitely_not_changed, definitely_changed;
- */
-int toupper(int c)
-{
-  int __retres;
-  if (c >= 'a') 
-    if (c <= 'z') {
-      __retres = c - 0x20;
-      goto return_label;
-    }
-  __retres = c;
-  return_label: return __retres;
-}
-
-int __fc_errno = 0;
-fenv_t volatile __fc_fenv_state;
-/*@ assigns __fc_fenv_state, \result;
-    assigns __fc_fenv_state \from (indirect: excepts), __fc_fenv_state;
-    assigns \result \from (indirect: __fc_fenv_state), (indirect: excepts);
- */
-extern int feclearexcept(int excepts);
-
-/*@ assigns *envp, \result;
-    assigns *envp \from __fc_fenv_state;
-    assigns \result \from (indirect: __fc_fenv_state);
- */
-extern int fegetenv(fenv_t *envp);
-
-/*@ assigns *flagp, \result;
-    assigns *flagp \from __fc_fenv_state, excepts;
-    assigns \result \from (indirect: __fc_fenv_state), (indirect: excepts);
- */
-extern int fegetexceptflag(fexcept_t *flagp, int excepts);
-
-/*@ assigns \result;
-    assigns \result \from __fc_fenv_state; */
-extern int fegetround(void);
-
-int feholdexcept(fenv_t *envp);
-
-/*@ assigns \result;
-    assigns \result \from (indirect: __fc_fenv_state), (indirect: excepts);
- */
-extern int feraiseexcept(int excepts);
-
-int fesetenv(fenv_t const *envp);
-
-/*@ assigns __fc_fenv_state, \result;
-    assigns __fc_fenv_state \from *flagp, excepts;
-    assigns \result
-      \from (indirect: __fc_fenv_state), (indirect: *flagp),
-            (indirect: excepts);
- */
-extern int fesetexceptflag(fexcept_t const *flagp, int excepts);
-
-/*@ assigns __fc_fenv_state, \result;
-    assigns __fc_fenv_state
-      \from (indirect: __fc_fenv_state), (indirect: round);
-    assigns \result \from (indirect: __fc_fenv_state), (indirect: round);
- */
-extern int fesetround(int round);
-
-int fetestexcept(int excepts);
-
-/*@ assigns __fc_fenv_state, \result;
-    assigns __fc_fenv_state \from __fc_fenv_state, *envp;
-    assigns \result \from (indirect: __fc_fenv_state), (indirect: *envp);
- */
-extern int feupdateenv(fenv_t const *envp);
-
-static int volatile fetestexcept___fc_random_fetestexcept;
-/*@ assigns \result;
-    assigns \result \from (indirect: excepts), __fc_fenv_state;
- */
-int fetestexcept(int excepts)
-{
-  int __retres;
-  __retres = 0x00FF & fetestexcept___fc_random_fetestexcept;
-  return __retres;
-}
-
-/*@ assigns *envp, __fc_fenv_state, \result;
-    assigns *envp \from __fc_fenv_state;
-    assigns __fc_fenv_state \from __fc_fenv_state;
-    assigns \result \from (indirect: __fc_fenv_state);
- */
-int feholdexcept(fenv_t *envp)
-{
-  int __retres;
-  *envp = __fc_fenv_state;
-  __retres = 0;
-  return __retres;
-}
-
-/*@ assigns __fc_fenv_state, \result;
-    assigns __fc_fenv_state \from *envp;
-    assigns \result \from (indirect: __fc_fenv_state), (indirect: *envp);
- */
-int fesetenv(fenv_t const *envp)
-{
-  int __retres;
-  __fc_fenv_state = *envp;
-  __retres = 0;
-  return __retres;
-}
-
-int glob(char const *pattern, int flags,
-         int (*errfunc)(char const *epath, int eerrno), glob_t *pglob);
-
-void globfree(glob_t *pglob);
-
-/*@ assigns *pglob, \result;
-    assigns *pglob
-      \from (indirect: *(pattern + (0 .. strlen{Old}(pattern)))), flags,
-            (indirect: errfunc);
-    assigns \result
-      \from (indirect: *(pattern + (0 .. strlen{Old}(pattern)))),
-            (indirect: flags), (indirect: errfunc);
-    allocates \old(pglob)->gl_pathv;
- */
-int glob(char const *pattern, int flags,
-         int (*errfunc)(char const *epath, int eerrno), glob_t *pglob)
-{
-  int __retres;
-  int tmp;
-  unsigned int tmp_0;
-  char **tmp_1;
-  int tmp_2;
-  int tmp_5;
-  tmp = Frama_C_interval(0,10);
-  pglob->gl_pathc = (unsigned int)tmp;
-  if (flags & (1 << 3)) tmp_0 = pglob->gl_offs; else tmp_0 = (unsigned int)0;
-  size_t reserve_offs = tmp_0;
-  size_t prev_len = (size_t)0;
-  if (flags & (1 << 5)) 
-    while (*(pglob->gl_pathv + (reserve_offs + prev_len))) prev_len ++;
-  if (flags & (1 << 5)) tmp_1 = pglob->gl_pathv; else tmp_1 = (char **)0;
-  char **path = tmp_1;
-  if (pglob->gl_pathc == (unsigned int)0) 
-    if (flags & (1 << 4)) {
-      pglob->gl_pathv = (char **)realloc((void *)path,
-                                         ((reserve_offs + prev_len) + (size_t)2) * sizeof(char *));
-      if (! pglob->gl_pathv) {
-        __retres = 1;
-        goto return_label;
-      }
-      {
-        size_t i = (size_t)0;
-        while (i < reserve_offs) {
-          *(pglob->gl_pathv + i) = (char *)0;
-          i ++;
-        }
-      }
-      *(pglob->gl_pathv + (reserve_offs + prev_len)) = (char *)pattern;
-      *(pglob->gl_pathv + ((reserve_offs + prev_len) + (size_t)1)) = (char *)0;
-      __retres = 0;
-      goto return_label;
-    }
-    else {
-      __retres = 3;
-      goto return_label;
-    }
-  pglob->gl_pathv = (char **)realloc((void *)path,
-                                     (((reserve_offs + prev_len) + pglob->gl_pathc) + (size_t)1) * sizeof(char *));
-  if (! pglob->gl_pathv) {
-    __retres = 1;
-    goto return_label;
-  }
-  {
-    size_t i_0 = (size_t)0;
-    while (i_0 < reserve_offs) {
-      *(pglob->gl_pathv + i_0) = (char *)0;
-      i_0 ++;
-    }
-  }
-  {
-    size_t i_1 = (size_t)0;
-    while (i_1 < pglob->gl_pathc) {
-      *(pglob->gl_pathv + ((reserve_offs + prev_len) + i_1)) = (char *)"glob result";
-      i_1 ++;
-    }
-  }
-  *(pglob->gl_pathv + ((prev_len + reserve_offs) + pglob->gl_pathc)) = (char *)0;
-  tmp_2 = Frama_C_nondet(0,1 << 8);
-  pglob->gl_flags = flags | tmp_2;
-  tmp_5 = Frama_C_nondet(0,1);
-  if (tmp_5) {
-    __retres = 0;
-    goto return_label;
-  }
-  else {
-    if (errfunc) {
-      int tmp_4;
-      int tmp_3;
-      tmp_3 = Frama_C_interval(0,255);
-      tmp_4 = (*errfunc)("glob.c error path",tmp_3);
-      int res = tmp_4;
-      if (res) {
-        __retres = 2;
-        goto return_label;
-      }
-      else 
-        if (flags & (1 << 0)) {
-          __retres = 2;
-          goto return_label;
-        }
-    }
-    __retres = 0;
-    goto return_label;
-  }
-  return_label: return __retres;
-}
-
-/*@ assigns *pglob;
-    assigns *pglob \from *pglob;
-    frees pglob->gl_pathv; */
-void globfree(glob_t *pglob)
-{
-  if (pglob->gl_pathc > (unsigned int)0) free((void *)pglob->gl_pathv);
-  return;
-}
-
-intmax_t imaxabs(intmax_t c);
-
-imaxdiv_t imaxdiv(intmax_t numer, intmax_t denom);
-
-/*@ assigns \result, *(endptr + (..)), __fc_errno;
-    assigns \result \from *(nptr + (..)), base;
-    assigns *(endptr + (..)) \from *(nptr + (..)), base;
-    assigns __fc_errno \from *(nptr + (..)), base;
- */
-extern intmax_t strtoimax(char const * restrict nptr,
-                          char ** restrict endptr, int base);
-
-/*@ requires abs_representable: c > -9223372036854775807LL - 1LL;
-    ensures positive_result: \result ≥ 0.;
-    ensures
-      equal_magnitude_result: \result ≡ \old(c) ∨ \result ≡ -\old(c);
-    ensures logical_abs_result: \result ≡ \abs(\old(c));
-    assigns \result;
-    assigns \result \from c;
- */
-intmax_t imaxabs(intmax_t c)
-{
-  intmax_t __retres;
-  if (c > (intmax_t)0) {
-    __retres = c;
-    goto return_label;
-  }
-  else {
-    __retres = - c;
-    goto return_label;
-  }
-  return_label: return __retres;
-}
-
-/*@ requires no_div_by_zero: denom ≢ 0;
-    requires no_overflow: denom ≢ -1 ∨ (intmax_t)(-numer) ≢ numer;
-    ensures correct_div: \result.quot ≡ \old(numer) / \old(denom);
-    ensures correct_mod: \result.rem ≡ \old(numer) % \old(denom);
-    assigns \result;
-    assigns \result \from numer, denom;
- */
-imaxdiv_t imaxdiv(intmax_t numer, intmax_t denom)
-{
-  imaxdiv_t r;
-  r.quot = numer / denom;
-  r.rem = numer % denom;
-  return r;
-}
-
-extern struct lconv *__fc_locale;
-
-extern char *__fc_locale_names[512];
-
-char *setlocale(int category, char const *locale);
-
-struct lconv *localeconv(void);
-
-struct lconv __C_locale =
-  {.decimal_point = (char *)".",
-   .thousands_sep = (char *)"",
-   .grouping = (char *)"",
-   .int_curr_symbol = (char *)"",
-   .currency_symbol = (char *)"",
-   .mon_decimal_point = (char *)"",
-   .mon_thousands_sep = (char *)"",
-   .mon_grouping = (char *)"",
-   .positive_sign = (char *)"",
-   .negative_sign = (char *)"",
-   .int_frac_digits = (char)127,
-   .frac_digits = (char)127,
-   .p_cs_precedes = (char)127,
-   .p_sep_by_space = (char)127,
-   .n_cs_precedes = (char)127,
-   .n_sep_by_space = (char)127,
-   .p_sign_posn = (char)127,
-   .n_sign_posn = (char)127,
-   .int_p_cs_precedes = (char)127,
-   .int_p_sep_by_space = (char)127,
-   .int_n_cs_precedes = (char)127,
-   .int_n_sep_by_space = (char)127,
-   .int_p_sign_posn = (char)127,
-   .int_n_sign_posn = (char)127};
-struct lconv *__frama_c_locale = & __C_locale;
-char const *__frama_c_locale_names[512] = {"C"};
-/*@ requires
-      locale_null_or_valid_string:
-        locale ≡ \null ∨ valid_read_string(locale);
-    ensures
-      result_null_or_locale_name:
-        \result ≡ \null ∨
-        (\valid(\result) ∧ (∃ ℤ i; \result ≡ __fc_locale_names[i]));
-    assigns __fc_locale, \result;
-    assigns __fc_locale \from category, *(locale + (..));
-    assigns \result \from __fc_locale, category, *(locale + (..));
- */
-char *setlocale(int category, char const *locale)
-{
-  char *__retres;
-  if ((int)*locale == 'C') {
-    __frama_c_locale = & __C_locale;
-    __retres = (char *)__frama_c_locale_names[0];
-    goto return_label;
-  }
-  __retres = (char *)0;
-  return_label: return __retres;
-}
-
-/*@ ensures result_current_locale: \result ≡ __fc_locale;
-    assigns \result;
-    assigns \result \from __fc_locale;
- */
-struct lconv *localeconv(void)
-{
-  return __frama_c_locale;
-}
-
-/*@ assigns \result;
-    assigns \result \from x;
-    
-    behavior nan:
-      assumes is_nan: \is_NaN(x);
-      ensures fp_nan: \result ≡ 0;
-    
-    behavior inf:
-      assumes is_infinite: ¬\is_NaN(x) ∧ ¬\is_finite(x);
-      ensures fp_infinite: \result ≡ 1;
-    
-    behavior zero:
-      assumes is_a_zero: x ≡ 0.0;
-      ensures fp_zero: \result ≡ 2;
-    
-    behavior subnormal:
-      assumes is_finite: \is_finite(x);
-      assumes
-        is_subnormal:
-          (x > 0.0 ∧ x < 0x1p-126) ∨ (x < 0.0 ∧ x > -0x1p-126);
-      ensures fp_subnormal: \result ≡ 3;
-    
-    behavior normal:
-      assumes is_finite: \is_finite(x);
-      assumes not_subnormal: x ≤ -0x1p-126 ∨ x ≥ 0x1p-126;
-      ensures fp_normal: \result ≡ 4;
-    
-    complete behaviors normal, subnormal, zero, inf, nan;
-    disjoint behaviors normal, subnormal, zero, inf, nan;
- */
-int __fc_fpclassifyf(float x);
-
-/*@ assigns \result;
-    assigns \result \from x;
-    
-    behavior nan:
-      assumes is_nan: \is_NaN(x);
-      ensures fp_nan: \result ≡ 0;
-    
-    behavior inf:
-      assumes is_infinite: ¬\is_NaN(x) ∧ ¬\is_finite(x);
-      ensures fp_infinite: \result ≡ 1;
-    
-    behavior zero:
-      assumes is_a_zero: x ≡ 0.0;
-      ensures fp_zero: \result ≡ 2;
-    
-    behavior subnormal:
-      assumes is_finite: \is_finite(x);
-      assumes
-        is_subnormal:
-          (x > 0.0 ∧ x < 0x1p-1022) ∨ (x < 0.0 ∧ x > -0x1p-1022);
-      ensures fp_subnormal: \result ≡ 3;
-    
-    behavior normal:
-      assumes is_finite: \is_finite(x);
-      assumes not_subnormal: x ≤ -0x1p-1022 ∨ x ≥ 0x1p-1022;
-      ensures fp_normal: \result ≡ 4;
-    
-    complete behaviors normal, subnormal, zero, inf, nan;
-    disjoint behaviors normal, subnormal, zero, inf, nan;
- */
-int __fc_fpclassify(double x);
-
-/*@ requires in_domain: \is_finite(x) ∧ \abs(x) ≤ 1;
-    ensures positive_result: \is_finite(\result) ∧ \result ≥ 0;
-    ensures no_error: __fc_errno ≡ \old(__fc_errno);
-    assigns \result;
-    assigns \result \from x;
- */
-extern double acos(double x);
-
-/*@ requires in_domain: \is_finite(x) ∧ \abs(x) ≤ 1;
-    ensures positive_result: \is_finite(\result) ∧ \result ≥ 0;
-    ensures no_error: __fc_errno ≡ \old(__fc_errno);
-    assigns \result;
-    assigns \result \from x;
- */
-extern float acosf(float x);
-
-/*@ requires in_domain: \is_finite(x) ∧ \abs(x) ≤ 1;
-    ensures positive_result: \is_finite(\result) ∧ \result ≥ 0;
-    ensures no_error: __fc_errno ≡ \old(__fc_errno);
-    assigns \result;
-    assigns \result \from x;
- */
-extern long double acosl(long double x);
-
-/*@ requires in_domain: \is_finite(x) ∧ \abs(x) ≤ 1;
-    ensures finite_result: \is_finite(\result);
-    ensures no_error: __fc_errno ≡ \old(__fc_errno);
-    assigns \result;
-    assigns \result \from x;
- */
-extern double asin(double x);
-
-/*@ requires in_domain: \is_finite(x) ∧ \abs(x) ≤ 1;
-    ensures finite_result: \is_finite(\result);
-    ensures no_error: __fc_errno ≡ \old(__fc_errno);
-    assigns \result;
-    assigns \result \from x;
- */
-extern float asinf(float x);
-
-/*@ requires in_domain: \is_finite(x) ∧ \abs(x) ≤ 1;
-    ensures finite_result: \is_finite(\result);
-    ensures no_error: __fc_errno ≡ \old(__fc_errno);
-    assigns \result;
-    assigns \result \from x;
- */
-extern long double asinl(long double x);
-
-/*@ requires number_arg: ¬\is_NaN(x);
-    ensures finite_result: \is_finite(\result);
-    ensures result_domain: -1.571 ≤ \result ≤ 1.571;
-    assigns \result;
-    assigns \result \from x;
- */
-extern float atanf(float x);
-
-/*@ requires number_arg: ¬\is_NaN(x);
-    ensures finite_result: \is_finite(\result);
-    ensures result_domain: -1.571 ≤ \result ≤ 1.571;
-    assigns \result;
-    assigns \result \from x;
- */
-extern double atan(double x);
-
-/*@ requires number_arg: ¬\is_NaN(x);
-    ensures finite_result: \is_finite(\result);
-    ensures result_domain: -1.571 ≤ \result ≤ 1.571;
-    assigns \result;
-    assigns \result \from x;
- */
-extern long double atanl(long double x);
-
-/*@ requires number_args: ¬\is_NaN(x) ∧ ¬\is_NaN(y);
-    ensures finite_result: \is_finite(\result);
-    assigns \result;
-    assigns \result \from x, y;
- */
-extern double atan2(double y, double x);
-
-/*@ requires number_args: ¬\is_NaN(x) ∧ ¬\is_NaN(y);
-    ensures finite_result: \is_finite(\result);
-    assigns \result;
-    assigns \result \from x, y;
- */
-extern float atan2f(float y, float x);
-
-/*@ requires number_args: ¬\is_NaN(x) ∧ ¬\is_NaN(y);
-    ensures finite_result: \is_finite(\result);
-    assigns \result;
-    assigns \result \from x, y;
- */
-extern long double atan2l(long double y, long double x);
-
-/*@ requires finite_arg: \is_finite(x);
-    ensures finite_result: \is_finite(\result);
-    ensures result_domain: -1. ≤ \result ≤ 1.;
-    ensures no_error: __fc_errno ≡ \old(__fc_errno);
-    assigns \result;
-    assigns \result \from x;
- */
-extern double cos(double x);
-
-/*@ requires finite_arg: \is_finite(x);
-    ensures finite_result: \is_finite(\result);
-    ensures result_domain: -1. ≤ \result ≤ 1.;
-    ensures no_error: __fc_errno ≡ \old(__fc_errno);
-    assigns \result;
-    assigns \result \from x;
- */
-extern float cosf(float x);
-
-/*@ requires finite_arg: \is_finite(x);
-    ensures finite_result: \is_finite(\result);
-    ensures result_domain: -1. ≤ \result ≤ 1.;
-    ensures no_error: __fc_errno ≡ \old(__fc_errno);
-    assigns \result;
-    assigns \result \from x;
- */
-extern long double cosl(long double x);
-
-/*@ requires finite_arg: \is_finite(x);
-    ensures finite_result: \is_finite(\result);
-    ensures result_domain: -1. ≤ \result ≤ 1.;
-    ensures no_error: __fc_errno ≡ \old(__fc_errno);
-    assigns \result;
-    assigns \result \from x;
- */
-extern double sin(double x);
-
-/*@ requires finite_arg: \is_finite(x);
-    ensures finite_result: \is_finite(\result);
-    ensures result_domain: -1. ≤ \result ≤ 1.;
-    ensures no_error: __fc_errno ≡ \old(__fc_errno);
-    assigns \result;
-    assigns \result \from x;
- */
-extern float sinf(float x);
-
-/*@ requires finite_arg: \is_finite(x);
-    ensures finite_result: \is_finite(\result);
-    ensures result_domain: -1. ≤ \result ≤ 1.;
-    ensures no_error: __fc_errno ≡ \old(__fc_errno);
-    assigns \result;
-    assigns \result \from x;
- */
-extern long double sinl(long double x);
-
-/*@ requires not_infinity: ¬(infinite_arg: \is_infinite(x));
-    requires not_nan: ¬(nan_arg: \is_NaN(x));
-    assigns __fc_errno, \result;
-    assigns __fc_errno \from x;
-    assigns \result \from x;
-    
-    behavior zero:
-      assumes zero_arg: \is_finite(x) ∧ x ≡ 0.;
-      ensures zero_res: \is_finite(\result) ∧ \result ≡ \old(x);
-      ensures no_error: __fc_errno ≡ \old(__fc_errno);
-      assigns \result;
-      assigns \result \from x;
-    
-    behavior finite_non_zero:
-      assumes finite_arg: \is_finite(x) ∧ x ≢ 0.;
-      ensures finite_result: \is_finite(\result);
-      ensures
-        maybe_error: __fc_errno ≡ \old(__fc_errno) ∨ __fc_errno ≡ 34;
-    
-    complete behaviors finite_non_zero, zero;
-    disjoint behaviors finite_non_zero, zero;
- */
-extern double tan(double x);
-
-/*@ requires not_infinity: ¬(infinite_arg: \is_infinite(x));
-    requires not_nan: ¬(nan_arg: \is_NaN(x));
-    assigns __fc_errno, \result;
-    assigns __fc_errno \from x;
-    assigns \result \from x;
-    
-    behavior zero:
-      assumes zero_arg: \is_finite(x) ∧ x ≡ 0.;
-      ensures zero_res: \is_finite(\result) ∧ \result ≡ \old(x);
-      ensures no_error: __fc_errno ≡ \old(__fc_errno);
-      assigns \result;
-      assigns \result \from x;
-    
-    behavior finite_non_zero:
-      assumes finite_arg: \is_finite(x) ∧ x ≢ 0.;
-      ensures finite_result: \is_finite(\result);
-      ensures
-        maybe_error: __fc_errno ≡ \old(__fc_errno) ∨ __fc_errno ≡ 34;
-    
-    complete behaviors finite_non_zero, zero;
-    disjoint behaviors finite_non_zero, zero;
- */
-extern float tanf(float x);
-
-/*@ ensures
-      maybe_error:
-        __fc_errno ≡ \old(__fc_errno) ∨ __fc_errno ≡ 33 ∨
-        __fc_errno ≡ 34;
-    assigns __fc_errno, \result;
-    assigns __fc_errno \from x;
-    assigns \result \from x;
- */
-extern long double tanl(long double x);
-
-/*@ requires in_domain: \is_finite(x) ∧ x ≥ 1;
-    ensures positive_result: \is_finite(\result) ∧ \result ≥ 0;
-    ensures no_error: __fc_errno ≡ \old(__fc_errno);
-    assigns \result;
-    assigns \result \from x;
- */
-extern double acosh(double x);
-
-/*@ requires in_domain: \is_finite(x) ∧ x ≥ 1;
-    ensures positive_result: \is_finite(\result) ∧ \result ≥ 0;
-    ensures no_error: __fc_errno ≡ \old(__fc_errno);
-    assigns \result;
-    assigns \result \from x;
- */
-extern float acoshf(float x);
-
-/*@ requires in_domain: \is_finite(x) ∧ x ≥ 1;
-    ensures positive_result: \is_finite(\result) ∧ \result ≥ 0;
-    ensures no_error: __fc_errno ≡ \old(__fc_errno);
-    assigns \result;
-    assigns \result \from x;
- */
-extern long double acoshl(long double x);
-
-/*@ requires
-      not_overflow:
-        ¬(overflow_arg: \is_finite(x) ∧ x > 0x1.62e42fefa39efp+9);
-    requires not_plus_infinity: ¬(plus_infinity_arg: \is_plus_infinity(x));
-    requires not_nan: ¬(nan_arg: \is_NaN(x));
-    assigns __fc_errno, \result;
-    assigns __fc_errno \from x;
-    assigns \result \from x;
-    
-    behavior normal:
-      assumes finite_arg: \is_finite(x);
-      assumes
-        domain_arg: x ≥ -0x1.74910d52d3051p9 ∧ x ≤ 0x1.62e42fefa39efp+9;
-      ensures res_finite: \is_finite(\result);
-      ensures positive_result: \result > 0.;
-      ensures no_error: __fc_errno ≡ \old(__fc_errno);
-      assigns \result;
-      assigns \result \from x;
-    
-    behavior underflow:
-      assumes underflow_arg: \is_finite(x) ∧ x < -0x1.74910d52d3051p9;
-      ensures zero_res: \result ≡ 0.;
-      ensures errno_set: __fc_errno ≡ 34;
-    
-    behavior minus_infinity:
-      assumes plus_infinity_arg: \is_minus_infinity(x);
-      ensures zero_result: \is_finite(\result) ∧ \result ≡ 0.;
-      ensures no_error: __fc_errno ≡ \old(__fc_errno);
-      assigns \result;
-      assigns \result \from x;
-    
-    complete behaviors minus_infinity, underflow, normal;
-    disjoint behaviors minus_infinity, underflow, normal;
- */
-extern double exp(double x);
-
-/*@ requires
-      not_overflow: ¬(overflow_arg: \is_finite(x) ∧ x > 0x1.62e42ep+6);
-    requires not_plus_infinity: ¬(plus_infinity_arg: \is_plus_infinity(x));
-    requires not_nan: ¬(nan_arg: \is_NaN(x));
-    assigns __fc_errno, \result;
-    assigns __fc_errno \from x;
-    assigns \result \from x;
-    
-    behavior normal:
-      assumes finite_arg: \is_finite(x);
-      assumes domain_arg: x ≥ -0x1.9fe368p6 ∧ x ≤ 0x1.62e42ep+6;
-      ensures res_finite: \is_finite(\result);
-      ensures positive_result: \result > 0.;
-      ensures no_error: __fc_errno ≡ \old(__fc_errno);
-      assigns \result;
-      assigns \result \from x;
-    
-    behavior underflow:
-      assumes underflow_arg: \is_finite(x) ∧ x < -0x1.9fe368p6;
-      ensures zero_res: \result ≡ 0.;
-      ensures errno_set: __fc_errno ≡ 34;
-    
-    behavior minus_infinity:
-      assumes plus_infinity_arg: \is_minus_infinity(x);
-      ensures zero_result: \is_finite(\result) ∧ \result ≡ 0.;
-      ensures no_error: __fc_errno ≡ \old(__fc_errno);
-      assigns \result;
-      assigns \result \from x;
-    
-    complete behaviors minus_infinity, underflow, normal;
-    disjoint behaviors minus_infinity, underflow, normal;
- */
-extern float expf(float x);
-
-/*@ requires valid_exp: \valid(exp);
-    requires
-      not_infinite:
-        ¬(infinite_arg: \is_plus_infinity(x) ∨ \is_minus_infinity(x));
-    requires not_nan: ¬(nan_arg: \is_NaN(x));
-    assigns \result, *exp;
-    assigns \result \from x;
-    assigns *exp \from x;
-    
-    behavior normal:
-      assumes finite_arg: \is_finite(x);
-      assumes arg_nonzero: x ≢ 0.0;
-      ensures finite_result: \is_finite(\result);
-      ensures bounded_result: 0.5 ≤ \result < 1.0;
-      ensures initialization: exp: \initialized(\old(exp));
-    
-    behavior zero:
-      assumes zero_arg: \is_finite(x) ∧ x ≡ 0.;
-      ensures finite_result: \is_finite(\result);
-      ensures zero_result: \result ≡ 0.0;
-      ensures initialization: exp: \initialized(\old(exp));
-      ensures zero_exp: *\old(exp) ≡ 0;
-    
-    complete behaviors zero, normal;
-    disjoint behaviors zero, normal;
- */
-extern double frexp(double x, int *exp);
-
-/*@ requires valid_exp: \valid(exp);
-    requires
-      not_infinite:
-        ¬(infinite_arg: \is_plus_infinity(x) ∨ \is_minus_infinity(x));
-    requires not_nan: ¬(nan_arg: \is_NaN(x));
-    assigns \result, *exp;
-    assigns \result \from x;
-    assigns *exp \from x;
-    
-    behavior normal:
-      assumes finite_arg: \is_finite(x);
-      assumes arg_nonzero: x ≢ 0.0;
-      ensures finite_result: \is_finite(\result);
-      ensures bounded_result: 0.5 ≤ \result < 1.0;
-      ensures initialization: exp: \initialized(\old(exp));
-    
-    behavior zero:
-      assumes zero_arg: \is_finite(x) ∧ x ≡ 0.;
-      ensures finite_result: \is_finite(\result);
-      ensures zero_result: \result ≡ \old(x);
-      ensures initialization: exp: \initialized(\old(exp));
-      ensures zero_exp: *\old(exp) ≡ 0;
-    
-    complete behaviors zero, normal;
-    disjoint behaviors zero, normal;
- */
-extern float frexpf(float x, int *exp);
-
-/*@ requires valid_exp: \valid(exp);
-    requires
-      not_infinite:
-        ¬(infinite_arg: \is_plus_infinity(x) ∨ \is_minus_infinity(x));
-    requires not_nan: ¬(nan_arg: \is_NaN(x));
-    assigns \result, *exp;
-    assigns \result \from x;
-    assigns *exp \from x;
-    
-    behavior normal:
-      assumes finite_arg: \is_finite(x);
-      assumes arg_nonzero: x ≢ 0.0;
-      ensures finite_result: \is_finite(\result);
-      ensures bounded_result: 0.5 ≤ \result < 1.0;
-      ensures initialization: exp: \initialized(\old(exp));
-    
-    behavior zero:
-      assumes zero_arg: \is_finite(x) ∧ x ≡ 0.;
-      ensures finite_result: \is_finite(\result);
-      ensures zero_result: \result ≡ \old(x);
-      ensures initialization: exp: \initialized(\old(exp));
-      ensures zero_exp: *\old(exp) ≡ 0;
-    
-    complete behaviors zero, normal;
-    disjoint behaviors zero, normal;
- */
-extern long double frexpl(long double x, int *exp);
-
-/*@ requires
-      finite_logic_res: \is_finite((double)(x * pow(2.0d, (double)exp)));
-    ensures finite_result: \is_finite(\result);
-    ensures
-      __fc_errno: __fc_errno ≡ 34 ∨ __fc_errno ≡ \old(__fc_errno);
-    assigns __fc_errno, \result;
-    assigns __fc_errno \from x, exp;
-    assigns \result \from x, exp;
- */
-extern double ldexp(double x, int exp);
-
-/*@ requires
-      finite_logic_res:
-        \is_finite((float)(x * pow((double)(2.0f), (double)((float)exp))));
-    ensures finite_result: \is_finite(\result);
-    ensures
-      __fc_errno: __fc_errno ≡ 34 ∨ __fc_errno ≡ \old(__fc_errno);
-    assigns __fc_errno, \result;
-    assigns __fc_errno \from x, exp;
-    assigns \result \from x, exp;
- */
-extern float ldexpf(float x, int exp);
-
-/*@ requires finite_arg: \is_finite(x);
-    requires arg_positive: x > 0;
-    ensures finite_result: \is_finite(\result);
-    ensures no_error: __fc_errno ≡ \old(__fc_errno);
-    assigns \result;
-    assigns \result \from x;
- */
-extern double log(double x);
-
-/*@ requires finite_arg: \is_finite(x);
-    requires arg_positive: x > 0;
-    ensures finite_result: \is_finite(\result);
-    ensures no_error: __fc_errno ≡ \old(__fc_errno);
-    assigns \result;
-    assigns \result \from x;
- */
-extern float logf(float x);
-
-/*@ requires finite_arg: \is_finite(x);
-    requires arg_positive: x > 0;
-    ensures finite_result: \is_finite(\result);
-    ensures no_error: __fc_errno ≡ \old(__fc_errno);
-    assigns \result;
-    assigns \result \from x;
- */
-extern long double logl(long double x);
-
-/*@ requires finite_arg: \is_finite(x);
-    requires arg_positive: x > 0;
-    ensures finite_result: \is_finite(\result);
-    ensures no_error: __fc_errno ≡ \old(__fc_errno);
-    assigns \result;
-    assigns \result \from x;
- */
-extern double log10(double x);
-
-/*@ requires finite_arg: \is_finite(x);
-    requires arg_positive: x > 0;
-    ensures finite_result: \is_finite(\result);
-    ensures no_error: __fc_errno ≡ \old(__fc_errno);
-    assigns \result;
-    assigns \result \from x;
- */
-extern float log10f(float x);
-
-/*@ requires finite_arg: \is_finite(x);
-    requires arg_positive: x > 0;
-    ensures finite_result: \is_finite(\result);
-    ensures no_error: __fc_errno ≡ \old(__fc_errno);
-    assigns \result;
-    assigns \result \from x;
- */
-extern long double log10l(long double x);
-
-/*@ requires finite_arg: \is_finite(x);
-    requires arg_positive: x > 0;
-    ensures finite_result: \is_finite(\result);
-    ensures no_error: __fc_errno ≡ \old(__fc_errno);
-    assigns \result;
-    assigns \result \from x;
- */
-extern double log2(double x);
-
-/*@ requires finite_arg: \is_finite(x);
-    requires arg_positive: x > 0;
-    ensures finite_result: \is_finite(\result);
-    ensures no_error: __fc_errno ≡ \old(__fc_errno);
-    assigns \result;
-    assigns \result \from x;
- */
-extern float log2f(float x);
-
-/*@ requires finite_arg: \is_finite(x);
-    requires arg_positive: x > 0;
-    ensures finite_result: \is_finite(\result);
-    ensures no_error: __fc_errno ≡ \old(__fc_errno);
-    assigns \result;
-    assigns \result \from x;
- */
-extern long double log2l(long double x);
-
-double fabs(double x);
-
-float fabsf(float x);
-
-/*@ requires finite_arg: \is_finite(x);
-    ensures res_finite: \is_finite(\result);
-    ensures positive_result: \result ≥ 0.;
-    ensures
-      equal_magnitude_result: \result ≡ \old(x) ∨ \result ≡ -\old(x);
-    assigns \result;
-    assigns \result \from x;
- */
-extern long double fabsl(long double x);
-
-/*@ requires finite_logic_res: \is_finite(pow(x, y));
-    ensures finite_result: \is_finite(\result);
-    ensures
-      __fc_errno: __fc_errno ≡ 34 ∨ __fc_errno ≡ \old(__fc_errno);
-    assigns __fc_errno, \result;
-    assigns __fc_errno \from x, y;
-    assigns \result \from x, y;
- */
-extern double pow(double x, double y);
-
-/*@ requires finite_logic_res: \is_finite(pow((double)x, (double)y));
-    ensures finite_result: \is_finite(\result);
-    ensures
-      __fc_errno: __fc_errno ≡ 34 ∨ __fc_errno ≡ \old(__fc_errno);
-    assigns __fc_errno, \result;
-    assigns __fc_errno \from x, y;
-    assigns \result \from x, y;
- */
-extern float powf(float x, float y);
-
-/*@ requires finite_arg: \is_finite(x);
-    requires arg_positive: x ≥ -0.;
-    ensures finite_result: \is_finite(\result);
-    ensures positive_result: \result ≥ -0.;
-    ensures result_value: \result ≡ sqrt(\old(x));
-    ensures no_error: __fc_errno ≡ \old(__fc_errno);
-    assigns \result;
-    assigns \result \from x;
- */
-extern double sqrt(double x);
-
-/*@ requires finite_arg: \is_finite(x);
-    requires arg_positive: x ≥ -0.;
-    ensures finite_result: \is_finite(\result);
-    ensures positive_result: \result ≥ -0.;
-    ensures result_value: \result ≡ sqrt((double)\old(x));
-    ensures no_error: __fc_errno ≡ \old(__fc_errno);
-    assigns \result;
-    assigns \result \from x;
- */
-extern float sqrtf(float x);
-
-/*@ requires finite_arg: \is_finite(x);
-    requires arg_positive: x ≥ -0.;
-    ensures finite_result: \is_finite(\result);
-    ensures positive_result: \result ≥ -0.;
-    ensures no_error: __fc_errno ≡ \old(__fc_errno);
-    assigns \result;
-    assigns \result \from x;
- */
-extern long double sqrtl(long double x);
-
-/*@ requires finite_arg: \is_finite(x);
-    ensures finite_result: \is_finite(\result);
-    assigns \result;
-    assigns \result \from x;
- */
-extern double ceil(double x);
-
-/*@ requires finite_arg: \is_finite(x);
-    ensures finite_result: \is_finite(\result);
-    assigns \result;
-    assigns \result \from x;
- */
-extern float ceilf(float x);
-
-/*@ requires finite_arg: \is_finite(x);
-    ensures finite_result: \is_finite(\result);
-    assigns \result;
-    assigns \result \from x;
- */
-extern long double ceill(long double x);
-
-/*@ requires finite_arg: \is_finite(x);
-    ensures finite_result: \is_finite(\result);
-    assigns \result;
-    assigns \result \from x;
- */
-extern double floor(double x);
-
-/*@ requires finite_arg: \is_finite(x);
-    ensures finite_result: \is_finite(\result);
-    assigns \result;
-    assigns \result \from x;
- */
-extern float floorf(float x);
-
-/*@ requires finite_arg: \is_finite(x);
-    ensures finite_result: \is_finite(\result);
-    assigns \result;
-    assigns \result \from x;
- */
-extern long double floorl(long double x);
-
-/*@ requires finite_arg: \is_finite(x);
-    ensures finite_result: \is_finite(\result);
-    assigns \result;
-    assigns \result \from x;
- */
-extern double round(double x);
-
-/*@ requires finite_arg: \is_finite(x);
-    ensures finite_result: \is_finite(\result);
-    assigns \result;
-    assigns \result \from x;
- */
-extern float roundf(float x);
-
-/*@ requires finite_arg: \is_finite(x);
-    ensures finite_result: \is_finite(\result);
-    assigns \result;
-    assigns \result \from x;
- */
-extern long double roundl(long double x);
-
-/*@ requires finite_arg: \is_finite(x);
-    ensures finite_result: \is_finite(\result);
-    assigns \result;
-    assigns \result \from x;
- */
-extern double trunc(double x);
-
-/*@ requires finite_arg: \is_finite(x);
-    ensures finite_result: \is_finite(\result);
-    assigns \result;
-    assigns \result \from x;
- */
-extern float truncf(float x);
-
-/*@ requires finite_arg: \is_finite(x);
-    ensures finite_result: \is_finite(\result);
-    assigns \result;
-    assigns \result \from x;
- */
-extern long double truncl(long double x);
-
-/*@ requires in_domain: ¬\is_NaN(x) ∧ ¬\is_NaN(y) ∧ y ≢ 0.;
-    ensures finite_result: \is_finite(\result);
-    ensures no_error: __fc_errno ≡ \old(__fc_errno);
-    assigns \result;
-    assigns \result \from x, y;
- */
-extern double fmod(double x, double y);
-
-/*@ requires in_domain: ¬\is_NaN(x) ∧ ¬\is_NaN(y) ∧ y ≢ 0.;
-    ensures finite_result: \is_finite(\result);
-    ensures no_error: __fc_errno ≡ \old(__fc_errno);
-    assigns \result;
-    assigns \result \from x, y;
- */
-extern float fmodf(float x, float y);
-
-/*@ requires tagp_valid_string: valid_read_string(tagp);
-    ensures result_is_nan: \is_NaN(\result);
-    assigns \result;
-    assigns \result \from (indirect: *(tagp + (0 ..)));
- */
-extern double nan(char const *tagp);
-
-/*@ requires tagp_valid_string: valid_read_string(tagp);
-    ensures result_is_nan: \is_NaN(\result);
-    assigns \result;
-    assigns \result \from (indirect: *(tagp + (0 ..)));
- */
-extern float nanf(char const *tagp);
-
-/*@ requires tagp_valid_string: valid_read_string(tagp);
-    ensures result_is_nan: \is_NaN(\result);
-    assigns \result;
-    assigns \result \from (indirect: *(tagp + (0 ..)));
- */
-extern long double nanl(char const *tagp);
-
-int __finitef(float f);
-
-int __finite(double d);
-
-/*@ logic float __fc_infinity(ℤ x) = \plus_infinity;
- */
-/*@ logic float __fc_nan(ℤ x) = \NaN;
-
-*/
-/*@ ensures result_is_infinity: \is_plus_infinity(\result);
-    assigns \result;
-    assigns \result \from \nothing;
- */
-extern float __fc_infinity(int x);
-
-/*@ ensures result_is_nan: \is_NaN(\result);
-    assigns \result;
-    assigns \result \from \nothing;
- */
-extern float __fc_nan(int x);
-
-/*@ requires finite_arg: \is_finite(x);
-    ensures res_finite: \is_finite(\result);
-    ensures positive_result: \result ≥ 0.;
-    ensures
-      equal_magnitude_result: \result ≡ \old(x) ∨ \result ≡ -\old(x);
-    assigns \result;
-    assigns \result \from x;
- */
-double fabs(double x)
-{
-  double __retres;
-  if (x == 0.0) {
-    __retres = 0.0;
-    goto return_label;
-  }
-  if (x > 0.0) {
-    __retres = x;
-    goto return_label;
-  }
-  __retres = - x;
-  return_label: return __retres;
-}
-
-/*@ requires finite_arg: \is_finite(x);
-    ensures res_finite: \is_finite(\result);
-    ensures positive_result: \result ≥ 0.;
-    ensures
-      equal_magnitude_result: \result ≡ \old(x) ∨ \result ≡ -\old(x);
-    assigns \result;
-    assigns \result \from x;
- */
-float fabsf(float x)
-{
-  float __retres;
-  if (x == 0.0f) {
-    __retres = 0.0f;
-    goto return_label;
-  }
-  else 
-    if (x > 0.0f) {
-      __retres = x;
-      goto return_label;
-    }
-    else {
-      __retres = - x;
-      goto return_label;
-    }
-  return_label: return __retres;
-}
-
-/*@ assigns \result;
-    assigns \result \from f;
-    
-    behavior finite:
-      assumes isfinite_f: \is_finite(f);
-      ensures nonzero_result: \result > 0 ∨ \result < 0;
-    
-    behavior nonfinite:
-      assumes nonfinite_f: ¬\is_finite(f);
-      ensures zero_result: \result ≡ 0;
-    
-    complete behaviors nonfinite, finite;
-    disjoint behaviors nonfinite, finite;
- */
-int __finitef(float f)
-{
-  int __retres;
-  union __fc_u_finitef u;
-  unsigned short usExp;
-  u.f = f;
-  usExp = (unsigned short)((int)u.w[1] & 0x7F80);
-  usExp = (unsigned short)((int)usExp >> 7);
-  __retres = ! ((int)usExp == 0xff);
-  return __retres;
-}
-
-/*@ assigns \result;
-    assigns \result \from d;
-    
-    behavior finite:
-      assumes isfinite_d: \is_finite(d);
-      ensures nonzero_result: \result > 0 ∨ \result < 0;
-    
-    behavior nonfinite:
-      assumes nonfinite_d: ¬\is_finite(d);
-      ensures zero_result: \result ≡ 0;
-    
-    complete behaviors nonfinite, finite;
-    disjoint behaviors nonfinite, finite;
- */
-int __finite(double d)
-{
-  int __retres;
-  union __fc_u_finite u;
-  unsigned short usExp;
-  u.d = d;
-  usExp = (unsigned short)((int)u.w[3] & 0x7F80);
-  usExp = (unsigned short)((int)usExp >> 7);
-  __retres = ! ((int)usExp == 0xff);
-  return __retres;
-}
-
-/*@ assigns \nothing; */
-extern void (*signal(int sig, void (*func)(int )))(int );
-
-/*@ ensures never_terminates: \false;
-    assigns \nothing; */
-extern int raise(int sig);
-
-/*@ requires valid_set: \valid(set);
-    ensures initialization: set: \initialized(\old(set));
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns *set, \result;
-    assigns *set \from \nothing;
-    assigns \result \from \nothing;
- */
-extern int sigemptyset(sigset_t *set);
-
-/*@ requires valid_set: \valid(set);
-    ensures initialization: set: \initialized(\old(set));
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns *set, \result;
-    assigns *set \from \nothing;
-    assigns \result \from \nothing;
- */
-extern int sigfillset(sigset_t *set);
-
-/*@ requires valid_set: \valid(set);
-    requires initialization: set: \initialized(set);
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns *set, \result;
-    assigns *set \from (indirect: signum);
-    assigns \result \from signum;
- */
-extern int sigaddset(sigset_t *set, int signum);
-
-/*@ requires valid_set: \valid(set);
-    requires initialization: set: \initialized(set);
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns *set, \result;
-    assigns *set \from (indirect: signum);
-    assigns \result \from signum;
- */
-extern int sigdelset(sigset_t *set, int signum);
-
-/*@ requires valid_read_set: \valid_read(set);
-    requires initialization: set: \initialized(set);
-    ensures
-      result_found_not_found_or_error:
-        \result ≡ 0 ∨ \result ≡ 1 ∨ \result ≡ -1;
-    assigns \result;
-    assigns \result \from *set, signum;
- */
-extern int sigismember(sigset_t const *set, int signum);
-
-struct sigaction __fc_sigaction[64 + 1];
-struct sigaction *__fc_p_sigaction = __fc_sigaction;
-/*@ requires valid_signal: 0 ≤ signum ≤ 64;
-    requires valid_oldact_or_null: oldact ≡ \null ∨ \valid(oldact);
-    requires valid_read_act_or_null: act ≡ \null ∨ \valid_read(act);
-    requires separation: separated_acts: \separated(act, oldact);
-    ensures
-      act_changed:
-        \old(act) ≡ \null ∨
-        \subset(*(__fc_p_sigaction + \old(signum)), *\old(act));
-    ensures
-      oldact_assigned:
-        \old(oldact) ≡ \null ∨
-        *\old(oldact) ∈ *(__fc_p_sigaction + \old(signum));
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns *oldact, *(__fc_p_sigaction + signum), \result;
-    assigns *oldact \from __fc_p_sigaction;
-    assigns *(__fc_p_sigaction + signum) \from *act;
-    assigns \result
-      \from (indirect: signum), (indirect: act), (indirect: *act),
-            (indirect: oldact), (indirect: *oldact);
- */
-extern int sigaction(int signum, struct sigaction const * restrict act,
-                     struct sigaction * restrict oldact);
-
-/*@ requires valid_set_or_null: set ≡ \null ∨ \valid_read(set);
-    requires valid_how: set ≢ \null ⇒ how ∈ {0, 2, 1};
-    requires valid_oldset_or_null: oldset ≡ \null ∨ \valid(oldset);
-    requires
-      separation: (set ≡ oldset ≡ \null) ∨ \separated(set, oldset);
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    ensures
-      initialization: oldset_initialized:
-        \old(oldset) ≢ \null ∧ \result ≡ 0 ⇒
-        \initialized(\old(oldset));
-    assigns \result, *oldset;
-    assigns \result
-      \from (indirect: how), (indirect: set), (indirect: oldset);
-    assigns *oldset \from (indirect: how), (indirect: oldset);
- */
-extern int sigprocmask(int how, sigset_t const * restrict set,
-                       sigset_t * restrict oldset);
-
-/*@ requires valid_mask_or_null: sigmask ≡ \null ∨ \valid_read(sigmask);
-    ensures result_means_interrupted: \result ≡ -1;
-    ensures errno_set: __fc_errno ≡ 4;
-    assigns __fc_errno, \result;
-    assigns __fc_errno \from (indirect: sigmask);
-    assigns \result \from (indirect: sigmask);
- */
-extern int sigsuspend(sigset_t const *sigmask);
-
-/*@ ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result;
-    assigns \result \from (indirect: pid), (indirect: sig);
- */
-extern int kill(pid_t pid, int sig);
-
-/*@ ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result;
-    assigns \result \from (indirect: pgrp), (indirect: sig);
- */
-extern int killpg(pid_t pgrp, int sig);
-
-extern int volatile __fc_fds[1024];
-
-/*@ requires valid_fd: 0 ≤ fd < 1024;
-    requires
-      initialization: initialized_inputs:
-        ∀ ℤ i;
-          0 ≤ i < iovcnt ⇒
-          \initialized(&(iov + i)->iov_base) ∧
-          \initialized(&(iov + i)->iov_len);
-    requires
-      valid_iov:
-        ∀ ℤ i;
-          0 ≤ i < iovcnt ⇒
-          \valid((char *)(&(iov + i)->iov_base) +
-                 (0 .. (iov + i)->iov_len - 1));
-    requires bounded_iovcnt: 0 ≤ iovcnt ≤ 255;
-    ensures
-      result_error_or_read_bytes:
-        \result ≡ -1 ∨
-        (0 ≤ \result ≤
-         \sum(0, \old(iovcnt) - 1, \lambda ℤ k; (\old(iov) + k)->iov_len));
-    assigns {*((char *)(iov + i)->iov_base + j) |
-             ℤ i, ℤ j; 0 ≤ i < iovcnt ∧ 0 ≤ j < (iov + i)->iov_len},
-            \result;
-    assigns
-    {*((char *)(iov + i)->iov_base + j) |
-     ℤ i, ℤ j; 0 ≤ i < iovcnt ∧ 0 ≤ j < (iov + i)->iov_len}
-      \from (indirect: fd), (indirect: iovcnt), (indirect: __fc_fds[fd]);
-    assigns \result
-      \from (indirect: fd), (indirect: __fc_fds[fd]),
-            (indirect: *(iov + (0 ..))), (indirect: iovcnt);
- */
-extern ssize_t readv(int fd, struct iovec const *iov, int iovcnt);
-
-/*@ requires valid_fd: 0 ≤ fd < 1024;
-    requires
-      initialization: initialized_inputs:
-        ∀ ℤ i;
-          0 ≤ i < iovcnt ⇒
-          \initialized(&(iov + i)->iov_base) ∧
-          \initialized(&(iov + i)->iov_len);
-    requires valid_read_iov: \valid_read(iov + (0 .. iovcnt - 1));
-    requires
-      valid_read_iov_bases:
-        ∀ ℤ i;
-          0 ≤ i < iovcnt ⇒
-          \valid_read((char *)(iov + i)->iov_base +
-                      (0 .. (iov + i)->iov_len - 1));
-    requires bounded_iovcnt: 0 ≤ iovcnt ≤ 255;
-    requires
-      bounded_lengths:
-        \sum(0, iovcnt - 1, \lambda ℤ k; (iov + k)->iov_len) ≤ 2147483647;
-    ensures
-      result_error_or_written_bytes:
-        \result ≡ -1 ∨
-        (0 ≤ \result ≤
-         \sum(0, \old(iovcnt) - 1, \lambda ℤ k; (\old(iov) + k)->iov_len));
-    assigns \result, __fc_fds[fd];
-    assigns \result
-      \from (indirect: fd), (indirect: __fc_fds[fd]),
-            (indirect: *(iov + (0 ..))), (indirect: iovcnt);
-    assigns __fc_fds[fd]
-      \from (indirect: *(iov + (0 ..))), (indirect: iovcnt);
- */
-extern ssize_t writev(int fd, struct iovec const *iov, int iovcnt);
-
-/*@ ghost struct __fc_sockfds_type __fc_sockfds[1024]; */
-/*@ ghost extern int __fc_socket_counter; */
-
-/*@ ghost int volatile __fc_open_sock_fds; */
-/*@ requires valid_sockfd: 0 ≤ sockfd < 1024;
-    ensures
-      result_error_or_valid_new_sockfd:
-        \result ≡ -1 ∨ (0 ≤ \result < 1024);
-    assigns \result, *((char *)addr + (0 .. *addrlen - 1)),
-            __fc_sockfds[sockfd];
-    assigns \result \from *addr, *addrlen, __fc_sockfds[sockfd];
-    assigns *((char *)addr + (0 .. *addrlen - 1))
-      \from *addr, *addrlen, __fc_sockfds[sockfd];
-    assigns __fc_sockfds[sockfd] \from *addr, *addrlen, __fc_sockfds[sockfd];
-    
-    behavior addr_null:
-      assumes addr_is_null: addr ≡ \null;
-      requires addrlen_should_be_null: addrlen ≡ \null;
-      assigns \result, __fc_sockfds[sockfd];
-      assigns \result \from __fc_sockfds[sockfd];
-      assigns __fc_sockfds[sockfd] \from __fc_sockfds[sockfd];
-    
-    behavior addr_not_null:
-      assumes addr_is_not_null: addr ≢ \null;
-      requires valid_addrlen: \valid(addrlen);
-      requires addr_has_room: \valid((char *)addr + (0 .. *addrlen - 1));
-      ensures
-        initialization: addr:
-          \initialized((char *)\old(addr) + (0 .. *\old(addrlen) - 1));
-    
-    disjoint behaviors addr_not_null, addr_null;
- */
-extern int accept(int sockfd, struct sockaddr *addr, socklen_t *addrlen);
-
-/*@ requires valid_sockfd: sockfd: 0 ≤ sockfd < 1024;
-    requires valid_read_addr: \valid_read((char *)addr + (0 .. addrlen - 1));
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns __fc_sockfds[sockfd], \result;
-    assigns __fc_sockfds[sockfd]
-      \from sockfd, *addr, addrlen, __fc_sockfds[sockfd];
-    assigns \result
-      \from (indirect: sockfd), (indirect: *addr), (indirect: addrlen),
-            (indirect: __fc_sockfds[sockfd]);
- */
-extern int bind(int sockfd, struct sockaddr const *addr, socklen_t addrlen);
-
-/*@ requires valid_sockfd: 0 ≤ sockfd < 1024;
-    requires valid_read_addr: \valid_read((char *)addr + (0 .. addrlen - 1));
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns __fc_sockfds[sockfd], \result;
-    assigns __fc_sockfds[sockfd]
-      \from __fc_sockfds[sockfd], (indirect: sockfd), (indirect: addr),
-            (indirect: *addr), (indirect: addrlen);
-    assigns \result
-      \from (indirect: __fc_sockfds[sockfd]), (indirect: sockfd),
-            (indirect: addr), (indirect: *addr), (indirect: addrlen);
- */
-extern int connect(int sockfd, struct sockaddr const *addr, socklen_t addrlen);
-
-/*@ requires valid_sockfd: 0 ≤ socket < 1024;
-    requires valid_address_len: \valid(address_len);
-    requires initialization: address_len: \initialized(address_len);
-    requires
-      valid_address: \valid((char *)address + (0 .. *address_len - 1));
-    ensures new_address_len: *\old(address_len) ≤ \old(*address_len);
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns *address_len, \result,
-            *((char *)address + (0 .. *address_len - 1));
-    assigns *address_len \from (indirect: socket), __fc_sockfds[socket];
-    assigns \result
-      \from (indirect: __fc_sockfds[socket]), (indirect: socket);
-    assigns *((char *)address + (0 .. *address_len - 1))
-      \from (indirect: __fc_sockfds[socket]), (indirect: socket);
- */
-extern int getsockname(int socket, struct sockaddr * restrict address,
-                       socklen_t * restrict address_len);
-
-/*@ requires valid_sockfd: 0 ≤ sockfd < 1024;
-    requires valid_optlen: \valid(optlen);
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns *((char *)optval + (0 ..)), \result, *optlen;
-    assigns *((char *)optval + (0 ..))
-      \from (indirect: sockfd), (indirect: level), (indirect: optname),
-            (indirect: *optlen), (indirect: optval),
-            (indirect: __fc_sockfds[sockfd]);
-    assigns \result
-      \from (indirect: sockfd), (indirect: level), (indirect: optname),
-            (indirect: *optlen), (indirect: optval),
-            (indirect: __fc_sockfds[sockfd]);
-    assigns *optlen
-      \from (indirect: sockfd), (indirect: level), (indirect: optname),
-            *optlen, (indirect: optval), (indirect: __fc_sockfds[sockfd]);
-    
-    behavior so_error:
-      assumes optname_is_error: level ≡ 1 ∧ optname ≡ 4;
-      requires valid_optlen: \valid(optlen);
-      requires optlen_value: *optlen ≡ sizeof(int);
-      requires valid_optval: \valid((int *)optval);
-      assigns *((int *)optval), \result;
-      assigns *((int *)optval)
-        \from (indirect: sockfd), (indirect: optlen),
-              (indirect: __fc_sockfds[sockfd]);
-      assigns \result
-        \from (indirect: sockfd), (indirect: optlen),
-              (indirect: __fc_sockfds[sockfd]);
-    
-    behavior other_options:
-      assumes optname_not_error: ¬(level ≡ 1 ∧ optname ≡ 4);
-      requires
-        optval_null_or_valid:
-          optval ≡ \null ∨ \valid((char *)optval + (0 ..));
-      assigns *((char *)optval + (0 ..)), \result, *optlen;
-      assigns *((char *)optval + (0 ..))
-        \from (indirect: sockfd), (indirect: level), (indirect: optname),
-              (indirect: *optlen), (indirect: optval),
-              (indirect: __fc_sockfds[sockfd]);
-      assigns \result
-        \from (indirect: sockfd), (indirect: level), (indirect: optname),
-              (indirect: *optlen), (indirect: optval),
-              (indirect: __fc_sockfds[sockfd]);
-      assigns *optlen
-        \from (indirect: sockfd), (indirect: level), (indirect: optname),
-              *optlen, (indirect: optval), (indirect: __fc_sockfds[sockfd]);
-    
-    complete behaviors other_options, so_error;
-    disjoint behaviors other_options, so_error;
- */
-extern int getsockopt(int sockfd, int level, int optname, void *optval,
-                      socklen_t *optlen);
-
-/*@ requires valid_sockfd: 0 ≤ sockfd < 1024;
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result, __fc_sockfds[sockfd];
-    assigns \result \from sockfd, __fc_sockfds[sockfd];
-    assigns __fc_sockfds[sockfd] \from sockfd, backlog, __fc_sockfds[sockfd];
- */
-extern int listen(int sockfd, int backlog);
-
-/*@ requires valid_sockfd: 0 ≤ sockfd < 1024;
-    requires valid_buffer_length: \valid((char *)buf + (0 .. len - 1));
-    ensures
-      result_error_or_received_length:
-        \result ≡ -1 ∨ (0 ≤ \result ≤ \old(len));
-    ensures
-      initialization: \initialized((char *)\old(buf) + (0 .. \result - 1));
-    assigns *((char *)buf + (0 .. len - 1)), __fc_sockfds[sockfd], \result;
-    assigns *((char *)buf + (0 .. len - 1))
-      \from sockfd, len, flags, __fc_sockfds[sockfd];
-    assigns __fc_sockfds[sockfd]
-      \from sockfd, len, flags, __fc_sockfds[sockfd];
-    assigns \result \from sockfd, len, flags, __fc_sockfds[sockfd];
- */
-extern ssize_t recv(int sockfd, void *buf, size_t len, int flags);
-
-ssize_t recvfrom(int sockfd, void *buf, size_t len, int flags,
-                 struct sockaddr *addrbuf, socklen_t *addrbuf_len);
-
-/*@ requires valid_sockfd: 0 ≤ sockfd < 1024;
-    requires
-      msg_control_has_room:
-        \valid((char *)hdr->msg_control + (0 .. hdr->msg_controllen - 1));
-    requires
-      msg_iov_has_room: \valid(hdr->msg_iov + (0 .. hdr->msg_iovlen - 1));
-    requires
-      msg_name_null_or_has_room:
-        hdr->msg_name ≡ \null ∨
-        \valid((char *)hdr->msg_name + (0 .. hdr->msg_namelen - 1));
-    ensures
-      result_error_or_received_length:
-        \result ≡ -1 ∨ (0 ≤ \result ≤ \old(hdr)->msg_iovlen);
-    assigns *((char *)hdr->msg_name + (0 .. hdr->msg_namelen - 1)),
-            hdr->msg_namelen,
-            *((char *)(hdr->msg_iov + (0 .. hdr->msg_iovlen - 1))->iov_base +
-              (0 ..)),
-            *((char *)hdr->msg_control + (0 .. hdr->msg_controllen - 1)),
-            \result, hdr->msg_controllen, hdr->msg_flags,
-            __fc_sockfds[sockfd];
-    assigns *((char *)hdr->msg_name + (0 .. hdr->msg_namelen - 1))
-      \from __fc_sockfds[sockfd];
-    assigns hdr->msg_namelen \from __fc_sockfds[sockfd];
-    assigns
-    *((char *)(hdr->msg_iov + (0 .. hdr->msg_iovlen - 1))->iov_base + (0 ..))
-      \from __fc_sockfds[sockfd];
-    assigns *((char *)hdr->msg_control + (0 .. hdr->msg_controllen - 1))
-      \from __fc_sockfds[sockfd];
-    assigns \result \from __fc_sockfds[sockfd];
-    assigns hdr->msg_controllen \from __fc_sockfds[sockfd];
-    assigns hdr->msg_flags \from __fc_sockfds[sockfd];
-    assigns __fc_sockfds[sockfd] \from __fc_sockfds[sockfd];
- */
-extern ssize_t recvmsg(int sockfd, struct msghdr *hdr, int flags);
-
-/*@ requires available_sockfd: 0 ≤ sockfd < 1024;
-    requires buf_len_ok: \valid_read((char *)buf + (0 .. len - 1));
-    ensures
-      error_or_chars_sent: \result ≡ -1 ∨ (0 ≤ \result ≤ \old(len));
-    assigns __fc_errno, __fc_sockfds[sockfd], \result;
-    assigns __fc_errno
-      \from (indirect: sockfd), (indirect: __fc_sockfds[sockfd]),
-            (indirect: *((char *)buf + (0 .. len))), flags;
-    assigns __fc_sockfds[sockfd]
-      \from __fc_sockfds[sockfd], *((char *)buf + (0 .. len)), flags;
-    assigns \result
-      \from (indirect: sockfd), (indirect: __fc_sockfds[sockfd]),
-            (indirect: *((char *)buf + (0 .. len))), (indirect: flags);
- */
-extern ssize_t send(int sockfd, void const *buf, size_t len, int flags);
-
-/*@ requires available_sockfd: 0 ≤ sockfd < 1024;
-    requires valid_message: \valid_read(message);
-    requires
-      valid_msg_iov:
-        \valid_read(message->msg_iov + (0 .. message->msg_iovlen - 1));
-    ensures error_or_chars_sent: \result ≡ -1 ∨ 0 ≤ \result;
-    assigns __fc_sockfds[sockfd], \result;
-    assigns __fc_sockfds[sockfd]
-      \from __fc_sockfds[sockfd], (indirect: *message),
-            (indirect: *(message->msg_iov + (0 .. message->msg_iovlen - 1))),
-            (indirect: flags);
-    assigns \result
-      \from (indirect: sockfd), (indirect: __fc_sockfds[sockfd]),
-            (indirect: *message),
-            (indirect: *(message->msg_iov + (0 .. message->msg_iovlen - 1)));
- */
-extern ssize_t sendmsg(int sockfd, struct msghdr const *message, int flags);
-
-ssize_t sendto(int sockfd, void const *buf, size_t len, int flags,
-               struct sockaddr const *address, socklen_t address_len);
-
-/*@ requires valid_sockfd: 0 ≤ sockfd < 1024;
-    requires
-      optval_null_or_has_room:
-        optval ≡ \null ∨ \valid_read((char *)optval + (0 .. optlen - 1));
-    ensures result_error_or_ok: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result, __fc_sockfds[sockfd];
-    assigns \result
-      \from __fc_sockfds[sockfd], level, optname,
-            *((char *)optval + (0 .. optlen - 1)), optlen;
-    assigns __fc_sockfds[sockfd]
-      \from __fc_sockfds[sockfd], level, optname,
-            *((char *)optval + (0 .. optlen - 1)), optlen;
- */
-extern int setsockopt(int sockfd, int level, int optname, void const *optval,
-                      socklen_t optlen);
-
-/*@ requires valid_sockfd: 0 ≤ sockfd < 1024;
-    ensures result_error_or_ok: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result, __fc_sockfds[sockfd];
-    assigns \result \from how, __fc_sockfds[sockfd];
-    assigns __fc_sockfds[sockfd] \from how, __fc_sockfds[sockfd];
- */
-extern int shutdown(int sockfd, int how);
-
-/*@ ensures
-      result_error_or_valid_new_sockfd:
-        (0 ≤ \result < 1024) ∨ \result ≡ -1;
-    assigns \result, __fc_socket_counter;
-    assigns \result
-      \from (indirect: domain), (indirect: type), (indirect: protocol),
-            (indirect: __fc_socket_counter);
-    assigns __fc_socket_counter
-      \from (indirect: domain), (indirect: type), (indirect: protocol),
-            __fc_socket_counter;
- */
-extern int socket(int domain, int type, int protocol);
-
-/*@ requires valid_socket_sector: \valid(sv + (0 .. 1));
-    ensures result_error_or_ok: \result ≡ 0 ∨ \result ≡ -1;
-    ensures initialization: sv: \initialized(\old(sv) + (0 .. 1));
-    ensures valid_new_sockfd: sv0: 0 ≤ *(\old(sv) + 0) < 1024;
-    ensures valid_new_sockfd: sv1: 0 ≤ *(\old(sv) + 1) < 1024;
-    assigns \result, __fc_socket_counter, *(sv + (0 .. 1));
-    assigns \result \from __fc_socket_counter;
-    assigns __fc_socket_counter \from __fc_socket_counter;
-    assigns *(sv + (0 .. 1)) \from __fc_socket_counter;
- */
-extern int socketpair(int domain, int type, int protocol, int sv[2]);
-
-struct in6_addr const in6addr_any;
-
-struct in6_addr const in6addr_loopback;
-
-/*@ assigns \result;
-    assigns \result \from arg; */
-extern uint32_t htonl(uint32_t arg);
-
-/*@ assigns \result;
-    assigns \result \from arg; */
-extern uint16_t htons(uint16_t arg);
-
-/*@ assigns \result;
-    assigns \result \from arg; */
-extern uint32_t ntohl(uint32_t arg);
-
-/*@ assigns \result;
-    assigns \result \from arg; */
-extern uint16_t ntohs(uint16_t arg);
-
-/*@ requires valid_arg: valid_read_string(arg);
-    assigns \result;
-    assigns \result \from (indirect: *(arg + (0 ..)));
- */
-extern in_addr_t inet_addr(char const *arg);
-
-char volatile __fc_inet_ntoa_array[16];
-char *__fc_inet_ntoa = (char *)(__fc_inet_ntoa_array);
-/*@ ensures result_static_string: \result ≡ __fc_inet_ntoa;
-    ensures result_null_terminated: *(\result + 15) ≡ 0;
-    ensures result_valid_string: valid_read_string(\result);
-    assigns \result, *(__fc_inet_ntoa + (0 ..));
-    assigns \result \from (indirect: arg), __fc_inet_ntoa;
-    assigns *(__fc_inet_ntoa + (0 ..)) \from (indirect: arg);
- */
-extern char *inet_ntoa(struct in_addr arg);
-
-/*@ assigns \result, *(dst + (0 .. size - 1));
-    assigns \result \from dst, af, *((char *)src + (0 ..));
-    assigns *(dst + (0 .. size - 1)) \from af, *((char *)src + (0 ..));
- */
-extern char const *inet_ntop(int af, void const *src, char *dst,
-                             socklen_t size);
-
-/*@ assigns \result, *((char *)dst + (0 ..));
-    assigns \result \from af, *(src + (..));
-    assigns *((char *)dst + (0 ..)) \from af, *(src + (0 ..));
- */
-extern int inet_pton(int af, char const *src, void *dst);
-
-int h_errno;
-/*@ requires addrinfo_valid: \valid(addrinfo);
-    ensures allocation: \allocable(\old(addrinfo));
-    assigns \nothing;
-    frees addrinfo;
- */
-extern void freeaddrinfo(struct addrinfo *addrinfo);
-
-char const *__fc_gai_strerror = "<error message reported by gai_strerror>";
-/*@ ensures result_string: \result ≡ __fc_gai_strerror;
-    ensures result_valid_string: valid_read_string(\result);
-    assigns \result;
-    assigns \result \from (indirect: errcode), __fc_gai_strerror;
- */
-extern char const *gai_strerror(int errcode);
-
-int getaddrinfo(char const * restrict nodename,
-                char const * restrict servname,
-                struct addrinfo const * restrict hints,
-                struct addrinfo ** restrict res);
-
-struct hostent *gethostbyname(char const *name);
-
-static unsigned int volatile getaddrinfo_net_state;
-/*@ requires
-      nodename_string: nodename ≡ \null ∨ valid_read_string(nodename);
-    requires
-      servname_string: servname ≡ \null ∨ valid_read_string(servname);
-    requires hints_option: hints ≡ \null ∨ \valid_read(hints);
-    requires valid_res: \valid(res);
-    assigns *res, \result, __fc_errno;
-    assigns *res
-      \from (indirect: nodename), (indirect: servname), (indirect: hints);
-    assigns \result
-      \from (indirect: nodename), (indirect: servname), (indirect: hints);
-    assigns __fc_errno
-      \from (indirect: nodename), (indirect: servname), (indirect: hints);
-    allocates *\old(res);
-    
-    behavior empty_request:
-      assumes empty: nodename ≡ \null ∧ servname ≡ \null;
-      ensures no_name: \result ≡ -2;
-      assigns \result;
-      assigns \result \from (indirect: nodename), (indirect: servname);
-    
-    behavior normal_request:
-      assumes has_name: nodename ≢ \null ∨ servname ≢ \null;
-      ensures
-        initialization: allocation: success_or_error:
-          (\result ≡ 0 ∧
-           \fresh{Old, Here}(*\old(res),sizeof(*\old(res))) ∧
-           \initialized(*\old(res))) ∨
-          \result ≡ -3 ∨ \result ≡ -1 ∨ \result ≡ -4 ∨
-          \result ≡ -6 ∨ \result ≡ -10 ∨ \result ≡ -8 ∨
-          \result ≡ -7 ∨ \result ≡ -11;
-    
-    complete behaviors normal_request, empty_request;
-    disjoint behaviors normal_request, empty_request;
- */
-int getaddrinfo(char const * restrict nodename,
-                char const * restrict servname,
-                struct addrinfo const * restrict hints,
-                struct addrinfo ** restrict res)
-{
-  int __retres;
-  if (nodename == (char const *)0) 
-    if (servname == (char const *)0) {
-      __retres = -2;
-      goto return_label;
-    }
-  switch (getaddrinfo_net_state) {
-    case (unsigned int)0: __retres = -1;
-    goto return_label;
-    case (unsigned int)1: __retres = -3;
-    goto return_label;
-    case (unsigned int)2: __retres = -4;
-    goto return_label;
-    case (unsigned int)3: __retres = -6;
-    goto return_label;
-    case (unsigned int)5: __retres = -8;
-    goto return_label;
-    case (unsigned int)6: __retres = -7;
-    goto return_label;
-    case (unsigned int)7:
-    {
-      __fc_errno = 5;
-      __retres = -11;
-      goto return_label;
-    }
-    default:
-    {
-      struct addrinfo *tmp_0;
-      struct sockaddr *tmp_2;
-      int tmp_3;
-      struct addrinfo *ai = malloc(sizeof(*tmp_0));
-      if (! ai) {
-        __retres = -10;
-        goto return_label;
-      }
-      struct sockaddr *sa = malloc(sizeof(*tmp_2));
-      if (! sa) {
-        __retres = -10;
-        goto return_label;
-      }
-      tmp_3 = Frama_C_interval(0,43);
-      sa->sa_family = (sa_family_t)tmp_3;
-      /*@ \eva::slevel 15; */ ;
-      {
-        int i = 0;
-        while (i < 14) {
-          {
-            int tmp_4;
-            tmp_4 = Frama_C_interval(-127 - 1,127);
-            sa->sa_data[i] = (char)tmp_4;
-          }
-          i ++;
-        }
-      }
-      /*@ \eva::slevel default; */ ;
-      ai->ai_flags = 0;
-      ai->ai_family = (int)sa->sa_family;
-      ai->ai_socktype = Frama_C_interval(0,5);
-      ai->ai_protocol = Frama_C_interval(0,IPPROTO_MAX);
-      ai->ai_addrlen = sizeof(*sa);
-      ai->ai_addr = sa;
-      ai->ai_canonname = (char *)malloc((size_t)6);
-      if (! ai->ai_canonname) {
-        __retres = -10;
-        goto return_label;
-      }
-      strcpy(ai->ai_canonname,"dummy");
-      ai->ai_next = (struct addrinfo *)0;
-      *res = ai;
-      __retres = 0;
-      goto return_label;
-    }
-  }
-  return_label: return __retres;
-}
-
-struct __fc_gethostbyname __fc_ghbn;
-/*@ assigns *(answer + (0 .. anslen - 1)), \result;
-    assigns *(answer + (0 .. anslen - 1))
-      \from (indirect: anslen), Frama_C_entropy_source;
-    assigns \result \from (indirect: anslen), Frama_C_entropy_source;
- */
-static int res_search(char const *dname, int rec_class, int type,
-                      char *answer, int anslen)
-{
-  int tmp;
-  {
-    int i = 0;
-    while (i < anslen - 1) {
-      *(answer + i) = Frama_C_char_interval((char)(-127 - 1),(char)127);
-      i ++;
-    }
-  }
-  *(answer + (anslen - 1)) = (char)0;
-  tmp = Frama_C_interval(-1,anslen);
-  return tmp;
-}
-
-/*@ assigns *\result, Frama_C_entropy_source;
-    assigns *\result
-      \from *(name + (0 .. strlen{Old}(name))), Frama_C_entropy_source;
-    assigns Frama_C_entropy_source \from Frama_C_entropy_source;
-    allocates \result;
- */
-struct hostent *gethostbyname(char const *name)
-{
-  struct hostent *__retres;
-  char buf[128];
-  char const *cp;
-  int n;
-  int tmp;
-  __fc_ghbn.host.h_addrtype = 2;
-  __fc_ghbn.host.h_length = (int)sizeof(struct in_addr);
-  if ((int)*name >= '0') 
-    if ((int)*name <= '9') {
-      cp = name;
-      while (1) {
-        if (! *cp) {
-          struct in_addr addr;
-          cp --;
-          ;
-          if ((int)*cp == '.') break;
-          addr.s_addr = inet_addr(name);
-          if (addr.s_addr == 0xffffffff) {
-            __retres = (struct hostent *)0;
-            goto return_label;
-          }
-          memcpy((void *)(__fc_ghbn.host_addr),(void const *)(& addr),
-                 (size_t)__fc_ghbn.host.h_length);
-          strncpy(__fc_ghbn.hostbuf,name,(size_t)(128 - 1));
-          __fc_ghbn.hostbuf[128 - 1] = (char)'\000';
-          __fc_ghbn.host.h_name = __fc_ghbn.hostbuf;
-          __fc_ghbn.host.h_aliases = __fc_ghbn.host_aliases;
-          __fc_ghbn.host_aliases[0] = (char *)0;
-          __fc_ghbn.h_addr_ptrs[0] = (char *)(__fc_ghbn.host_addr);
-          __fc_ghbn.h_addr_ptrs[1] = (char *)0;
-          __fc_ghbn.host.h_addr_list = __fc_ghbn.h_addr_ptrs;
-          __retres = & __fc_ghbn.host;
-          goto return_label;
-        }
-        if ((int)*cp < '0') break;
-        else 
-          if ((int)*cp > '9') break;
-          else 
-            if ((int)*cp != '.') break;
-        cp ++;
-      }
-    }
-  n = res_search(name,1,1,buf,(int)sizeof(buf));
-  if (n < 0) {
-    __retres = (struct hostent *)0;
-    goto return_label;
-  }
-  tmp = Frama_C_nondet(0,1);
-  if (tmp) {
-    __retres = (struct hostent *)0;
-    goto return_label;
-  }
-  else {
-    struct in_addr addr_0;
-    addr_0.s_addr = inet_addr(name);
-    memcpy((void *)(__fc_ghbn.host_addr),(void const *)(& addr_0),
-           (size_t)__fc_ghbn.host.h_length);
-    strncpy(__fc_ghbn.hostbuf,name,(size_t)(128 - 1));
-    __fc_ghbn.hostbuf[128 - 1] = (char)'\000';
-    __fc_ghbn.host.h_name = __fc_ghbn.hostbuf;
-    __fc_ghbn.host.h_aliases = __fc_ghbn.host_aliases;
-    __fc_ghbn.host_aliases[0] = (char *)0;
-    __fc_ghbn.h_addr_ptrs[0] = (char *)(__fc_ghbn.host_addr);
-    __fc_ghbn.h_addr_ptrs[1] = (char *)0;
-    __fc_ghbn.host.h_addr_list = __fc_ghbn.h_addr_ptrs;
-    __retres = & __fc_ghbn.host;
-    goto return_label;
-  }
-  return_label: return __retres;
-}
-
-struct in6_addr const in6addr_any = {.s6_addr = {(uint8_t)0}};
-struct in6_addr const in6addr_loopback =
-  {.s6_addr = {(uint8_t)0,
-               (uint8_t)0,
-               (uint8_t)0,
-               (uint8_t)0,
-               (uint8_t)0,
-               (uint8_t)0,
-               (uint8_t)0,
-               (uint8_t)0,
-               (uint8_t)0,
-               (uint8_t)0,
-               (uint8_t)0,
-               (uint8_t)0,
-               (uint8_t)0,
-               (uint8_t)0,
-               (uint8_t)0,
-               (uint8_t)1}};
-char __fc_getpw_pw_name[64];
-char __fc_getpw_pw_passwd[64];
-char __fc_getpw_pw_gecos[64];
-char __fc_getpw_pw_dir[64];
-char __fc_getpw_pw_shell[64];
-struct passwd __fc_pwd =
-  {.pw_name = __fc_getpw_pw_name,
-   .pw_passwd = __fc_getpw_pw_passwd,
-   .pw_uid = 0U,
-   .pw_gid = 0U,
-   .pw_gecos = __fc_getpw_pw_gecos,
-   .pw_dir = __fc_getpw_pw_dir,
-   .pw_shell = __fc_getpw_pw_shell};
-struct passwd *__fc_p_pwd = & __fc_pwd;
-/*@ requires valid_name: valid_read_string(name);
-    ensures
-      result_null_or_internal_struct:
-        \result ≡ \null ∨ \result ≡ __fc_p_pwd;
-    assigns \result, __fc_pwd;
-    assigns \result \from __fc_p_pwd, (indirect: *(name + (0 ..)));
-    assigns __fc_pwd \from (indirect: *(name + (0 ..)));
- */
-extern struct passwd *getpwnam(char const *name);
-
-/*@ ensures
-      result_null_or_internal_struct:
-        \result ≡ \null ∨ \result ≡ __fc_p_pwd;
-    assigns \result, __fc_pwd;
-    assigns \result \from __fc_p_pwd, (indirect: uid);
-    assigns __fc_pwd \from (indirect: uid);
- */
-extern struct passwd *getpwuid(uid_t uid);
-
-int getpwnam_r(char const *name, struct passwd *pwd, char *buf,
-               size_t buflen, struct passwd **result);
-
-int getpwuid_r(uid_t uid, struct passwd *pwd, char *buf, size_t buflen,
-               struct passwd **result);
-
-static int __fc_getpw_init;
-/*@ assigns __fc_getpw_init, __fc_getpw_pw_name[0 .. 63],
-            __fc_getpw_pw_passwd[0 .. 63], __fc_getpw_pw_gecos[0 .. 63],
-            __fc_getpw_pw_dir[0 .. 63], __fc_getpw_pw_shell[0 .. 63],
-            *(buf + (0 .. buflen - 1)), *pwd, *result, \result;
-    assigns __fc_getpw_init \from __fc_pwd;
-    assigns __fc_getpw_pw_name[0 .. 63] \from __fc_pwd;
-    assigns __fc_getpw_pw_passwd[0 .. 63] \from __fc_pwd;
-    assigns __fc_getpw_pw_gecos[0 .. 63] \from __fc_pwd;
-    assigns __fc_getpw_pw_dir[0 .. 63] \from __fc_pwd;
-    assigns __fc_getpw_pw_shell[0 .. 63] \from __fc_pwd;
-    assigns *(buf + (0 .. buflen - 1)) \from __fc_pwd;
-    assigns *pwd \from __fc_pwd;
-    assigns *result \from __fc_pwd;
-    assigns \result \from __fc_pwd;
- */
-static int __fc_getpw_r(struct passwd *pwd, char *buf, size_t buflen,
-                        struct passwd **result)
-{
-  int __retres;
-  int tmp_2;
-  if (! __fc_getpw_init) {
-    __fc_getpw_init = 1;
-    Frama_C_make_unknown(__fc_getpw_pw_name,(size_t)63);
-    __fc_getpw_pw_name[63] = (char)0;
-    Frama_C_make_unknown(__fc_getpw_pw_passwd,(size_t)63);
-    __fc_getpw_pw_passwd[63] = (char)0;
-    Frama_C_make_unknown(__fc_getpw_pw_gecos,(size_t)63);
-    __fc_getpw_pw_gecos[63] = (char)0;
-    Frama_C_make_unknown(__fc_getpw_pw_dir,(size_t)63);
-    __fc_getpw_pw_dir[63] = (char)0;
-    Frama_C_make_unknown(__fc_getpw_pw_shell,(size_t)63);
-    __fc_getpw_pw_shell[63] = (char)0;
-  }
-  tmp_2 = Frama_C_interval(0,1);
-  if (tmp_2) {
-    int tmp;
-    int tmp_0;
-    int tmp_1;
-    *result = (struct passwd *)0;
-    tmp = Frama_C_interval(0,1);
-    if (tmp) {
-      __retres = 5;
-      goto return_label;
-    }
-    tmp_0 = Frama_C_interval(0,1);
-    if (tmp_0) {
-      __retres = 24;
-      goto return_label;
-    }
-    tmp_1 = Frama_C_interval(0,1);
-    if (tmp_1) {
-      __retres = 23;
-      goto return_label;
-    }
-    __retres = 0;
-    goto return_label;
-  }
-  else {
-    size_t len;
-    size_t remaining = buflen;
-    len = strlen((char const *)__fc_pwd.pw_name);
-    if (remaining <= len) {
-      *result = (struct passwd *)0;
-      __retres = 34;
-      goto return_label;
-    }
-    strcpy(buf,(char const *)__fc_pwd.pw_name);
-    *(buf + len) = (char)0;
-    pwd->pw_name = buf;
-    buf += len + (size_t)1;
-    remaining -= len;
-    len = strlen((char const *)__fc_pwd.pw_passwd);
-    if (remaining <= len) {
-      *result = (struct passwd *)0;
-      __retres = 34;
-      goto return_label;
-    }
-    strcpy(buf,(char const *)__fc_pwd.pw_passwd);
-    *(buf + len) = (char)0;
-    pwd->pw_passwd = buf;
-    buf += len + (size_t)1;
-    remaining -= len;
-    len = strlen((char const *)__fc_pwd.pw_gecos);
-    if (remaining <= len) {
-      *result = (struct passwd *)0;
-      __retres = 34;
-      goto return_label;
-    }
-    strcpy(buf,(char const *)__fc_pwd.pw_gecos);
-    *(buf + len) = (char)0;
-    pwd->pw_gecos = buf;
-    buf += len + (size_t)1;
-    remaining -= len;
-    len = strlen((char const *)__fc_pwd.pw_dir);
-    if (remaining <= len) {
-      *result = (struct passwd *)0;
-      __retres = 34;
-      goto return_label;
-    }
-    strcpy(buf,(char const *)__fc_pwd.pw_dir);
-    *(buf + len) = (char)0;
-    pwd->pw_dir = buf;
-    buf += len + (size_t)1;
-    remaining -= len;
-    len = strlen((char const *)__fc_pwd.pw_shell);
-    if (remaining <= len) {
-      *result = (struct passwd *)0;
-      __retres = 34;
-      goto return_label;
-    }
-    strcpy(buf,(char const *)__fc_pwd.pw_shell);
-    *(buf + len) = (char)0;
-    pwd->pw_shell = buf;
-    buf += len + (size_t)1;
-    remaining -= len;
-    pwd->pw_uid = Frama_C_unsigned_int_interval((unsigned int)0,4294967295U);
-    pwd->pw_gid = Frama_C_unsigned_int_interval((unsigned int)0,4294967295U);
-    *result = pwd;
-    __retres = 0;
-    goto return_label;
-  }
-  return_label: return __retres;
-}
-
-/*@ requires valid_name: valid_read_string(name);
-    requires valid_buf: \valid(buf + (0 .. buflen - 1));
-    requires valid_pwd: \valid(pwd);
-    requires valid_result: \valid(result);
-    ensures
-      result_null_or_assigned:
-        *\old(result) ≡ \null ∨ *\old(result) ≡ \old(pwd);
-    ensures
-      result_ok_or_error: \result ≡ 0 ∨ \result ∈ {5, 24, 23, 34};
-    assigns \result, __fc_pwd, *pwd, *result, *(buf + (0 .. buflen - 1));
-    assigns \result
-      \from (indirect: __fc_p_pwd), (indirect: *(name + (0 ..)));
-    assigns __fc_pwd \from (indirect: *(name + (0 ..)));
-    assigns *pwd \from __fc_p_pwd;
-    assigns *result \from __fc_p_pwd;
-    assigns *(buf + (0 .. buflen - 1)) \from (indirect: *__fc_p_pwd);
- */
-int getpwnam_r(char const *name, struct passwd *pwd, char *buf,
-               size_t buflen, struct passwd **result)
-{
-  int tmp;
-  /*@ assert valid_read_string(name); */ ;
-  tmp = __fc_getpw_r(pwd,buf,buflen,result);
-  return tmp;
-}
-
-/*@ requires valid_buf: \valid(buf + (0 .. buflen - 1));
-    requires valid_pwd: \valid(pwd);
-    requires valid_result: \valid(result);
-    ensures
-      result_null_or_assigned:
-        *\old(result) ≡ \null ∨ *\old(result) ≡ \old(pwd);
-    ensures
-      result_ok_or_error: \result ≡ 0 ∨ \result ∈ {5, 24, 23, 34};
-    assigns \result, __fc_pwd, *pwd, *result, *(buf + (0 .. buflen - 1));
-    assigns \result \from (indirect: __fc_p_pwd);
-    assigns __fc_pwd \from (indirect: uid);
-    assigns *pwd \from __fc_p_pwd;
-    assigns *result \from __fc_p_pwd;
-    assigns *(buf + (0 .. buflen - 1)) \from (indirect: *__fc_p_pwd);
- */
-int getpwuid_r(uid_t uid, struct passwd *pwd, char *buf, size_t buflen,
-               struct passwd **result)
-{
-  int tmp;
-  tmp = __fc_getpw_r(pwd,buf,buflen,result);
-  return tmp;
-}
-
-/*@ requires available_sockfd: 0 ≤ sockfd < 1024;
-    requires buf_len_ok: \valid_read((char *)buf + (0 .. len - 1));
-    ensures
-      error_or_chars_sent: \result ≡ -1 ∨ (0 ≤ \result ≤ \old(len));
-    assigns __fc_errno, __fc_sockfds[sockfd], \result;
-    assigns __fc_errno
-      \from (indirect: sockfd), (indirect: __fc_sockfds[sockfd]),
-            (indirect: *((char *)buf + (0 .. len))), flags;
-    assigns __fc_sockfds[sockfd]
-      \from __fc_sockfds[sockfd], *((char *)buf + (0 .. len)), flags;
-    assigns \result
-      \from (indirect: sockfd), (indirect: __fc_sockfds[sockfd]),
-            (indirect: *((char *)buf + (0 .. len))), (indirect: flags);
- */
-ssize_t sendto(int sockfd, void const *buf, size_t len, int flags,
-               struct sockaddr const *address, socklen_t address_len)
-{
-  ssize_t __retres;
-  int tmp_1;
-  tmp_1 = Frama_C_nondet(0,1);
-  if (tmp_1) {
-    int tmp;
-    int possible_errors[25] =
-      {13,
-       97,
-       11,
-       9,
-       104,
-       89,
-       113,
-       4,
-       22,
-       5,
-       106,
-       40,
-       90,
-       36,
-       100,
-       101,
-       105,
-       2,
-       12,
-       107,
-       20,
-       88,
-       95,
-       32,
-       11};
-    tmp = Frama_C_interval(0,
-                           (int)(sizeof(possible_errors) / sizeof(int) - (unsigned int)1));
-    __fc_errno = possible_errors[tmp];
-    __retres = -1;
-    goto return_label;
-  }
-  else {
-    ssize_t tmp_0;
-    tmp_0 = (ssize_t)Frama_C_long_interval((long)0,(long)len);
-    __retres = tmp_0;
-    goto return_label;
-  }
-  return_label: return __retres;
-}
-
-/*@ requires valid_sockfd: 0 ≤ sockfd < 1024;
-    requires valid_buffer_length: \valid((char *)buf + (0 .. len - 1));
-    requires
-      valid_addrbuf_or_null: initialization:
-        (\valid(addrbuf_len) ∧ \initialized(addrbuf_len) ∧
-         \valid((char *)addrbuf + (0 .. *addrbuf_len - 1))) ∨
-        (addrbuf ≡ \null ∧ addrbuf_len ≡ \null);
-    ensures
-      result_error_or_received_length:
-        \result ≡ -1 ∨ (0 ≤ \result ≤ \old(len));
-    ensures
-      initialization: buf:
-        \initialized((char *)\old(buf) + (0 .. \result - 1));
-    ensures
-      initialization: addrbuf:
-        \old(addrbuf) ≢ \null ⇒
-        \initialized((char *)\old(addrbuf) + (0 .. \old(*addrbuf_len) - 1));
-    assigns *((char *)buf + (0 .. len - 1)), __fc_sockfds[sockfd], \result,
-            *addrbuf_len, *((char *)addrbuf + (0 .. \old(*addrbuf_len) - 1));
-    assigns *((char *)buf + (0 .. len - 1))
-      \from sockfd, len, flags, __fc_sockfds[sockfd];
-    assigns __fc_sockfds[sockfd]
-      \from sockfd, len, flags, __fc_sockfds[sockfd];
-    assigns \result \from sockfd, len, flags, __fc_sockfds[sockfd];
-    assigns *addrbuf_len
-      \from (indirect: sockfd), (indirect: len), (indirect: flags),
-            __fc_sockfds[sockfd];
-    assigns *((char *)addrbuf + (0 .. \old(*addrbuf_len) - 1))
-      \from (indirect: sockfd), (indirect: len), (indirect: flags),
-            __fc_sockfds[sockfd];
- */
-ssize_t recvfrom(int sockfd, void *buf, size_t len, int flags,
-                 struct sockaddr *addrbuf, socklen_t *addrbuf_len)
-{
-  ssize_t __retres;
-  int tmp_3;
-  tmp_3 = Frama_C_nondet(0,1);
-  if (tmp_3) {
-    int tmp;
-    int possible_errors[13] =
-      {11, 9, 104, 4, 22, 5, 105, 12, 107, 88, 95, 110, 11};
-    tmp = Frama_C_interval(0,
-                           (int)(sizeof(possible_errors) / sizeof(int) - (unsigned int)1));
-    __fc_errno = possible_errors[tmp];
-    __retres = -1;
-    goto return_label;
-  }
-  else {
-    int tmp_0;
-    int tmp_1;
-    ssize_t tmp_2;
-    tmp_0 = Frama_C_interval(0,(int)(len - (size_t)1));
-    tmp_1 = Frama_C_interval(0,255);
-    *((char *)buf + tmp_0) = (char)tmp_1;
-    if (addrbuf) {
-      Frama_C_make_unknown((char *)addrbuf,*addrbuf_len);
-      *addrbuf_len = Frama_C_unsigned_int_interval((unsigned int)0,
-                                                   (unsigned int)128);
-    }
-    tmp_2 = (ssize_t)Frama_C_long_interval((long)0,(long)len);
-    __retres = tmp_2;
-    goto return_label;
-  }
-  return_label: return __retres;
-}
-
-/*@ ghost unsigned int volatile __fc_time; */
-/*@ assigns \result;
-    assigns \result \from __fc_time; */
-extern clock_t clock(void);
-
-/*@ assigns \result;
-    assigns \result \from time1, time0; */
-extern double difftime(time_t time1, time_t time0);
-
-/*@ requires valid_timeptr: \valid(timeptr);
-    assigns *timeptr, \result;
-    assigns *timeptr \from *timeptr;
-    assigns \result \from (indirect: *timeptr);
- */
-extern time_t mktime(struct tm *timeptr);
-
-/*@ assigns *timer, \result;
-    assigns *timer \from __fc_time;
-    assigns \result \from __fc_time;
-    
-    behavior null:
-      assumes timer_null: timer ≡ \null;
-      assigns \result;
-      assigns \result \from __fc_time;
-    
-    behavior not_null:
-      assumes timer_non_null: timer ≢ \null;
-      requires valid_timer: \valid(timer);
-      ensures initialization: timer: \initialized(\old(timer));
-      assigns *timer, \result;
-      assigns *timer \from __fc_time;
-      assigns \result \from __fc_time;
-    
-    complete behaviors not_null, null;
-    disjoint behaviors not_null, null;
- */
-extern time_t time(time_t *timer);
-
-char __fc_ctime[26];
-char * const __fc_p_ctime = __fc_ctime;
-/*@ requires valid_timeptr: \valid_read(timeptr);
-    requires initialization: init_timeptr: \initialized(timeptr);
-    ensures result_points_to_ctime: \result ≡ __fc_p_ctime;
-    ensures result_valid_string: valid_read_string(__fc_p_ctime);
-    assigns __fc_ctime[0 .. 25], \result;
-    assigns __fc_ctime[0 .. 25]
-      \from (indirect: *timeptr), (indirect: __fc_time);
-    assigns \result
-      \from (indirect: *timeptr), (indirect: __fc_time), __fc_p_ctime;
- */
-extern char *asctime(struct tm const *timeptr);
-
-/*@ requires valid_timer: \valid_read(timer);
-    requires initialization: init_timer: \initialized(timer);
-    ensures result_points_to_ctime: \result ≡ __fc_p_ctime;
-    ensures result_valid_string: valid_read_string(__fc_p_ctime);
-    assigns __fc_ctime[0 .. 25], \result;
-    assigns __fc_ctime[0 .. 25]
-      \from (indirect: *timer), (indirect: __fc_time);
-    assigns \result
-      \from (indirect: *timer), (indirect: __fc_time), __fc_p_ctime;
- */
-extern char *ctime(time_t const *timer);
-
-struct tm __fc_time_tm;
-struct tm * const __fc_p_time_tm = & __fc_time_tm;
-/*@ requires valid_timer: \valid_read(timer);
-    ensures
-      result_null_or_internal_tm:
-        \result ≡ &__fc_time_tm ∨ \result ≡ \null;
-    assigns \result, __fc_time_tm;
-    assigns \result \from __fc_p_time_tm;
-    assigns __fc_time_tm \from *timer;
- */
-extern struct tm *gmtime(time_t const *timer);
-
-/*@ requires valid_timer: \valid_read(timer);
-    ensures
-      result_null_or_internal_tm:
-        \result ≡ &__fc_time_tm ∨ \result ≡ \null;
-    ensures
-      maybe_error: __fc_errno ≡ \old(__fc_errno) ∨ __fc_errno ≡ 75;
-    assigns \result, __fc_time_tm;
-    assigns \result \from __fc_p_time_tm;
-    assigns __fc_time_tm \from *timer;
- */
-extern struct tm *localtime(time_t const *timer);
-
-/*@ requires dst_has_room: \valid(s + (0 .. max - 1));
-    requires valid_format: valid_read_string(format);
-    requires valid_tm: \valid_read(tm);
-    ensures result_bounded: \result < \old(max);
-    ensures result_valid_string: \result > 0 ⇒ valid_string(\old(s));
-    ensures result_length: \result > 0 ⇒ *(\old(s) + \result) ≡ 0;
-    assigns *(s + (0 .. max - 1)), \result;
-    assigns *(s + (0 .. max - 1))
-      \from (indirect: max), (indirect: *(format + (0 ..))), (indirect: *tm);
-    assigns \result
-      \from (indirect: max), (indirect: *(format + (0 ..))), (indirect: *tm);
- */
-extern size_t strftime(char * restrict s, size_t max,
-                       char const * restrict format,
-                       struct tm const * restrict tm);
-
-/*@ requires tp: \valid(tp);
-    assigns \result, *tp, __fc_time;
-    assigns \result \from __fc_time;
-    assigns *tp \from __fc_time;
-    assigns __fc_time \from __fc_time;
-    
-    behavior realtime_clock:
-      assumes realtime: clk_id ≡ 666;
-      ensures success: \result ≡ 0;
-      ensures initialization: \initialized(\old(tp));
-    
-    behavior monotonic_clock:
-      assumes monotonic: clk_id ≡ 1;
-      ensures success: \result ≡ 0;
-      ensures initialization: \initialized(\old(tp));
-    
-    behavior bad_clock_id:
-      assumes bad_id: clk_id ≢ 666 ∧ clk_id ≢ 1;
-      ensures error: \result ≡ 22;
-      assigns \result;
-      assigns \result \from clk_id;
-    
-    complete behaviors bad_clock_id, monotonic_clock, realtime_clock;
-    disjoint behaviors bad_clock_id, monotonic_clock, realtime_clock;
- */
-extern int clock_gettime(clockid_t clk_id, struct timespec *tp);
-
-/*@
-axiomatic nanosleep_predicates {
-  predicate abs_clock_in_range{L}(clockid_t id, struct timespec *tm) 
-    reads __fc_time;
-  
-  predicate valid_clock_id{L}(clockid_t id) 
-    reads __fc_time;
-  
-  }
-
-*/
-/*@ ghost int volatile __fc_interrupted; */
-/*@ requires valid_request: \valid_read(rqtp);
-    requires
-      initialization: initialized_request:
-        \initialized(&rqtp->tv_sec) ∧ \initialized(&rqtp->tv_nsec);
-    requires valid_nanosecs: 0 ≤ rqtp->tv_nsec < 1000000000;
-    requires valid_remaining_or_null: rmtp ≡ \null ∨ \valid(rmtp);
-    assigns \result;
-    assigns \result
-      \from (indirect: __fc_time), (indirect: __fc_interrupted),
-            (indirect: clock_id), (indirect: flags), (indirect: rqtp),
-            (indirect: *rqtp);
-    
-    behavior absolute:
-      assumes absolute_time: (flags & 1) ≢ 0;
-      assumes
-        no_einval:
-          abs_clock_in_range(clock_id, rqtp) ∧ valid_clock_id(clock_id);
-      ensures
-        result_ok_or_error:
-          \result ≡ 0 ∨ \result ≡ 4 ∨ \result ≡ 22 ∨
-          \result ≡ 95;
-      assigns \result;
-      assigns \result
-        \from (indirect: __fc_time), (indirect: __fc_interrupted),
-              (indirect: clock_id), (indirect: rqtp), (indirect: *rqtp);
-    
-    behavior relative_interrupted:
-      assumes relative_time: (flags & 1) ≡ 0;
-      assumes interrupted: __fc_interrupted ≢ 0;
-      assumes no_einval: valid_clock_id(clock_id);
-      ensures result_interrupted: \result ≡ 4;
-      ensures
-        initialization: interrupted_remaining:
-          \old(rmtp) ≢ \null ⇒
-          \initialized(&\old(rmtp)->tv_sec) ∧
-          \initialized(&\old(rmtp)->tv_nsec);
-      ensures
-        interrupted_remaining_decreases:
-          \old(rmtp) ≢ \null ⇒
-          \old(rqtp)->tv_sec * 1000000000 + \old(rqtp)->tv_nsec ≥
-          \old(rmtp)->tv_sec * 1000000000 + \old(rmtp)->tv_nsec;
-      ensures
-        remaining_valid:
-          \old(rmtp) ≢ \null ⇒ 0 ≤ \old(rmtp)->tv_nsec < 1000000000;
-      assigns \result, *rmtp;
-      assigns \result
-        \from (indirect: __fc_time), (indirect: clock_id), (indirect: rqtp),
-              (indirect: *rqtp);
-      assigns *rmtp
-        \from __fc_time, (indirect: clock_id), (indirect: rqtp),
-              (indirect: *rqtp), (indirect: rmtp);
-    
-    behavior relative_no_error:
-      assumes relative_time: (flags & 1) ≡ 0;
-      assumes not_interrupted: __fc_interrupted ≡ 0;
-      assumes no_einval: valid_clock_id(clock_id);
-      ensures result_ok: \result ≡ 0;
-      assigns \result;
-      assigns \result
-        \from (indirect: __fc_time), (indirect: clock_id), (indirect: rqtp),
-              (indirect: *rqtp);
-    
-    behavior relative_invalid_clock_id:
-      assumes relative_time: (flags & 1) ≡ 0;
-      assumes not_interrupted: __fc_interrupted ≡ 0;
-      assumes einval: ¬valid_clock_id(clock_id);
-      ensures result_einval: \result ≡ 22;
-      assigns \result;
-      assigns \result
-        \from (indirect: __fc_time), (indirect: clock_id), (indirect: rqtp),
-              (indirect: *rqtp);
-    
-    complete behaviors relative_invalid_clock_id,
-                       relative_no_error,
-                       relative_interrupted,
-                       absolute;
-    disjoint behaviors relative_invalid_clock_id,
-                       relative_no_error,
-                       relative_interrupted,
-                       absolute;
- */
-extern int clock_nanosleep(clockid_t clock_id, int flags,
-                           struct timespec const *rqtp, struct timespec *rmtp);
-
-/*@ requires valid_timer: \valid_read(timer);
-    requires valid_result: \valid(result);
-    ensures
-      result_null_or_result: \result ≡ \old(result) ∨ \result ≡ \null;
-    assigns \result, *result;
-    assigns \result \from (indirect: *timer), result;
-    assigns *result \from (indirect: *timer);
- */
-extern struct tm *gmtime_r(time_t const * restrict timer,
-                           struct tm * restrict result);
-
-/*@ requires valid_timer: \valid_read(timep);
-    requires valid_result: \valid(result);
-    ensures
-      result_null_or_initialized: initialization:
-        (\result ≡ \old(result) ∧ \initialized(\old(result))) ∨
-        \result ≡ \null;
-    ensures
-      maybe_error: __fc_errno ≡ \old(__fc_errno) ∨ __fc_errno ≡ 75;
-    assigns \result, *result, __fc_errno;
-    assigns \result \from (indirect: *timep), result;
-    assigns *result \from (indirect: *timep);
-    assigns __fc_errno \from (indirect: *timep);
- */
-extern struct tm *localtime_r(time_t const * restrict timep,
-                              struct tm * restrict result);
-
-/*@ requires valid_request: \valid_read(rqtp);
-    requires
-      initialization: initialized_request:
-        \initialized(&rqtp->tv_sec) ∧ \initialized(&rqtp->tv_nsec);
-    requires valid_nanosecs: 0 ≤ rqtp->tv_nsec < 1000000000;
-    requires valid_remaining_or_null: rmtp ≡ \null ∨ \valid(rmtp);
-    ensures result_elapsed_or_interrupted: \result ≡ 0 ∨ \result ≡ -1;
-    ensures
-      initialization: interrupted_remaining:
-        \old(rmtp) ≢ \null ∧ \result ≡ -1 ⇒
-        \initialized(&\old(rmtp)->tv_sec) ∧
-        \initialized(&\old(rmtp)->tv_nsec);
-    ensures
-      interrupted_remaining_decreases:
-        \old(rmtp) ≢ \null ∧ \result ≡ -1 ⇒
-        \old(rqtp)->tv_sec * 1000000000 + \old(rqtp)->tv_nsec ≥
-        \old(rmtp)->tv_sec * 1000000000 + \old(rmtp)->tv_nsec;
-    ensures
-      interrupted_remaining_valid:
-        \old(rmtp) ≢ \null ∧ \result ≡ -1 ⇒
-        0 ≤ \old(rmtp)->tv_nsec < 1000000000;
-    assigns \result, *rmtp;
-    assigns \result
-      \from (indirect: __fc_time), (indirect: rqtp), (indirect: *rqtp);
-    assigns *rmtp
-      \from (indirect: __fc_time), (indirect: rqtp), (indirect: *rqtp),
-            (indirect: rmtp);
- */
-extern int nanosleep(struct timespec const *rqtp, struct timespec *rmtp);
-
-extern char *tzname[2];
-
-/*@ assigns *(tzname[0 .. 1] + (0 ..));
-    assigns *(tzname[0 .. 1] + (0 ..)) \from \nothing;
- */
-extern void tzset(void);
-
-/*@ requires
-      valid:
-        valid_read_or_empty((void *)s, (size_t)(sizeof(wchar_t) * n)) ∨
-        \valid_read((unsigned char *)s + (0 .. wmemchr_off(s, c, n)));
-    requires
-      initialization:
-        \initialized(s + (0 .. n - 1)) ∨
-        \initialized(s + (0 .. wmemchr_off(s, c, n)));
-    requires
-      danglingness:
-        non_escaping((void *)s, (size_t)(sizeof(wchar_t) * n)) ∨
-        non_escaping((void *)s,
-                    (size_t)(sizeof(wchar_t) * (wmemchr_off(s, c, n) + 1)));
-    ensures
-      result_null_or_inside_s:
-        \result ≡ \null ∨ \subset(\result, \old(s) + (0 .. \old(n) - 1));
-    assigns \result;
-    assigns \result
-      \from s, (indirect: *(s + (0 .. n - 1))), (indirect: c), (indirect: n);
- */
-extern wchar_t *wmemchr(wchar_t const *s, wchar_t c, size_t n);
-
-/*@ requires
-      valid_s1:
-        valid_read_or_empty((void *)s1, (size_t)(sizeof(wchar_t) * n));
-    requires
-      valid_s2:
-        valid_read_or_empty((void *)s2, (size_t)(sizeof(wchar_t) * n));
-    requires initialization: s1: \initialized(s1 + (0 .. n - 1));
-    requires initialization: s2: \initialized(s2 + (0 .. n - 1));
-    requires
-      danglingness: s1:
-        non_escaping((void *)s1, (size_t)(sizeof(wchar_t) * n));
-    requires
-      danglingness: s2:
-        non_escaping((void *)s2, (size_t)(sizeof(wchar_t) * n));
-    assigns \result;
-    assigns \result
-      \from (indirect: *(s1 + (0 .. n - 1))),
-            (indirect: *(s2 + (0 .. n - 1))), (indirect: n);
- */
-extern int wmemcmp(wchar_t const *s1, wchar_t const *s2, size_t n);
-
-wchar_t *wmemcpy(wchar_t *dest, wchar_t const *src, size_t n);
-
-/*@ requires valid_src: \valid_read(src + (0 .. n - 1));
-    requires valid_dest: \valid(dest + (0 .. n - 1));
-    ensures result_ptr: \result ≡ \old(dest);
-    assigns *(dest + (0 .. n - 1)), \result;
-    assigns *(dest + (0 .. n - 1))
-      \from *(src + (0 .. n - 1)), (indirect: src), (indirect: n);
-    assigns \result \from dest;
- */
-extern wchar_t *wmemmove(wchar_t *dest, wchar_t const *src, size_t n);
-
-wchar_t *wmemset(wchar_t *dest, wchar_t val, size_t len);
-
-wchar_t *wcscat(wchar_t *dest, wchar_t const *src);
-
-/*@ requires valid_wstring_src: valid_read_wstring(wcs);
-    ensures
-      result_null_or_inside_wcs:
-        \result ≡ \null ∨ \subset(\result, \old(wcs) + (0 ..));
-    assigns \result;
-    assigns \result \from wcs, (indirect: *(wcs + (0 ..))), (indirect: wc);
- */
-extern wchar_t *wcschr(wchar_t const *wcs, wchar_t wc);
-
-/*@ requires valid_wstring_s1: valid_read_wstring(s1);
-    requires valid_wstring_s2: valid_read_wstring(s2);
-    assigns \result;
-    assigns \result
-      \from (indirect: *(s1 + (0 ..))), (indirect: *(s2 + (0 ..)));
- */
-extern int wcscmp(wchar_t const *s1, wchar_t const *s2);
-
-wchar_t *wcscpy(wchar_t *dest, wchar_t const *src);
-
-/*@ requires valid_wstring_wcs: valid_read_wstring(wcs);
-    requires valid_wstring_accept: valid_read_wstring(accept);
-    assigns \result;
-    assigns \result
-      \from (indirect: *(wcs + (0 ..))), (indirect: *(accept + (0 ..)));
- */
-extern size_t wcscspn(wchar_t const *wcs, wchar_t const *accept);
-
-/*@ requires valid_nwstring_src: valid_read_nwstring(src, n);
-    requires valid_wstring_dest: valid_wstring(dest);
-    requires
-      room_for_concatenation:
-        \valid(dest + (wcslen(dest) .. wcslen(dest) + \min(wcslen(src), n)));
-    requires
-      separation:
-        \separated(
-          dest + (0 .. wcslen(dest) + wcslen(src)), src + (0 .. wcslen(src))
-          );
-    assigns *(dest + (0 ..)), \result;
-    assigns *(dest + (0 ..))
-      \from *(dest + (0 ..)), (indirect: dest), *(src + (0 .. n - 1)),
-            (indirect: src), (indirect: n);
-    assigns \result
-      \from (indirect: *(dest + (0 ..))), (indirect: *(src + (0 .. n - 1))),
-            (indirect: n);
- */
-extern size_t wcslcat(wchar_t * restrict dest, wchar_t const * restrict src,
-                      size_t n);
-
-/*@ requires valid_wstring_src: valid_read_wstring(src);
-    requires room_nwstring: \valid(dest + (0 .. n));
-    requires
-      separation: dest: src:
-        \separated(dest + (0 .. n - 1), src + (0 .. n - 1));
-    assigns *(dest + (0 .. n - 1)), \result;
-    assigns *(dest + (0 .. n - 1))
-      \from *(src + (0 .. n - 1)), (indirect: src), (indirect: n);
-    assigns \result
-      \from (indirect: *(dest + (0 .. n - 1))), (indirect: dest),
-            (indirect: *(src + (0 .. n - 1))), (indirect: src), (indirect: n);
- */
-extern size_t wcslcpy(wchar_t *dest, wchar_t const *src, size_t n);
-
-size_t wcslen(wchar_t const *str);
-
-wchar_t *wcsncat(wchar_t *dest, wchar_t const *src, size_t n);
-
-/*@ requires valid_wstring_s1: valid_read_wstring(s1);
-    requires valid_wstring_s2: valid_read_wstring(s2);
-    assigns \result;
-    assigns \result
-      \from (indirect: *(s1 + (0 .. n - 1))),
-            (indirect: *(s2 + (0 .. n - 1))), (indirect: n);
- */
-extern int wcsncmp(wchar_t const *s1, wchar_t const *s2, size_t n);
-
-wchar_t *wcsncpy(wchar_t *dest, wchar_t const *src, size_t n);
-
-/*@ requires valid_wstring_wcs: valid_read_wstring(wcs);
-    requires valid_wstring_accept: valid_read_wstring(accept);
-    ensures
-      result_null_or_inside_wcs:
-        \result ≡ \null ∨ \subset(\result, \old(wcs) + (0 ..));
-    assigns \result;
-    assigns \result
-      \from wcs, (indirect: *(wcs + (0 ..))), (indirect: *(accept + (0 ..)));
- */
-extern wchar_t *wcspbrk(wchar_t const *wcs, wchar_t const *accept);
-
-/*@ requires valid_wstring_wcs: valid_read_wstring(wcs);
-    ensures
-      result_null_or_inside_wcs:
-        \result ≡ \null ∨ \subset(\result, \old(wcs) + (0 ..));
-    assigns \result;
-    assigns \result
-      \from wcs, (indirect: *(wcs + (0 .. wcslen{Old}(wcs)))), (indirect: wc);
- */
-extern wchar_t *wcsrchr(wchar_t const *wcs, wchar_t wc);
-
-/*@ requires valid_wstring_wcs: valid_read_wstring(wcs);
-    requires valid_wstring_accept: valid_read_wstring(accept);
-    assigns \result;
-    assigns \result
-      \from (indirect: *(wcs + (0 .. wcslen{Old}(wcs)))),
-            (indirect: *(accept + (0 .. wcslen{Old}(accept))));
- */
-extern size_t wcsspn(wchar_t const *wcs, wchar_t const *accept);
-
-/*@ requires valid_wstring_haystack: valid_read_wstring(haystack);
-    requires valid_wstring_needle: valid_read_wstring(needle);
-    ensures
-      result_null_or_inside_haystack:
-        \result ≡ \null ∨ \subset(\result, \old(haystack) + (0 ..));
-    assigns \result;
-    assigns \result
-      \from haystack, (indirect: *(haystack + (0 ..))),
-            (indirect: *(needle + (0 ..)));
- */
-extern wchar_t *wcsstr(wchar_t const *haystack, wchar_t const *needle);
-
-/*@ requires room_nwstring: \valid(ws + (0 .. n - 1));
-    requires valid_stream: \valid(stream);
-    ensures result_null_or_same: \result ≡ \null ∨ \result ≡ \old(ws);
-    ensures
-      terminated_string_on_success:
-        \result ≢ \null ⇒ valid_wstring(\old(ws));
-    assigns *(ws + (0 .. n - 1)), \result;
-    assigns *(ws + (0 .. n - 1)) \from (indirect: n), (indirect: *stream);
-    assigns \result \from ws, (indirect: n), (indirect: *stream);
- */
-extern wchar_t *fgetws(wchar_t * restrict ws, int n, FILE * restrict stream);
-
-/*@ axiomatic wformat_length {
-      logic ℤ wformat_length{L}(wchar_t *format) ;
-      
-      }
-
-*/
-/*@ requires valid_wstring_ws1: valid_read_wstring(ws1);
-    requires valid_wstring_ws2: valid_read_wstring(ws2);
-    assigns \result;
-    assigns \result
-      \from (indirect: *(ws1 + (0 ..))), (indirect: *(ws2 + (0 ..)));
- */
-extern int wcscasecmp(wchar_t const *ws1, wchar_t const *ws2);
-
-wchar_t *wcsdup(wchar_t const *ws);
-
-void __fc_atomic_init_marker(void *obj, unsigned long long value);
-
-void atomic_thread_fence(memory_order order);
-
-void atomic_signal_fence(memory_order order);
-
-_Bool __fc_atomic_is_lock_free(void *obj, size_t obj_size);
-
-void __fc_atomic_store_marker(void *object, unsigned long long desired,
-                              size_t obj_size);
-
-void __fc_atomic_store_explicit_marker(void *object,
-                                       unsigned long long desired,
-                                       memory_order order, size_t obj_size);
-
-unsigned long long __fc_atomic_load(void *obj, size_t obj_size);
-
-unsigned long long __fc_atomic_load_explicit(void *object,
-                                             memory_order order,
-                                             size_t obj_size);
-
-unsigned long long __fc_atomic_exchange(void *obj,
-                                        unsigned long long desired,
-                                        size_t obj_size);
-
-unsigned long long __fc_atomic_exchange_explicit(void *object,
-                                                 unsigned long long desired,
-                                                 memory_order order,
-                                                 size_t obj_size);
-
-_Bool __fc_atomic_compare_exchange_strong(void *object, void *expected,
-                                          unsigned long long desired,
-                                          size_t obj_size);
-
-_Bool __fc_atomic_compare_exchange_strong_explicit(void *object,
-                                                   void *expected,
-                                                   unsigned long long desired,
-                                                   memory_order success,
-                                                   memory_order failure,
-                                                   size_t obj_size);
-
-_Bool __fc_atomic_compare_exchange_weak(void *object, void *expected,
-                                        unsigned long long desired,
-                                        size_t obj_size);
-
-_Bool __fc_atomic_compare_exchange_weak_explicit(void *object,
-                                                 void *expected,
-                                                 unsigned long long desired,
-                                                 memory_order success,
-                                                 memory_order failure,
-                                                 size_t obj_size);
-
-unsigned long long __fc_atomic_fetch_add(void *obj,
-                                         unsigned long long operand,
-                                         size_t obj_size);
-
-unsigned long long __fc_atomic_fetch_add_explicit(void *obj,
-                                                  unsigned long long operand,
-                                                  memory_order order,
-                                                  size_t obj_size);
-
-unsigned long long __fc_atomic_fetch_sub(void *obj,
-                                         unsigned long long operand,
-                                         size_t obj_size);
-
-unsigned long long __fc_atomic_fetch_sub_explicit(void *obj,
-                                                  unsigned long long operand,
-                                                  memory_order order,
-                                                  size_t obj_size);
-
-unsigned long long __fc_atomic_fetch_or(void *obj,
-                                        unsigned long long operand,
-                                        size_t obj_size);
-
-unsigned long long __fc_atomic_fetch_or_explicit(void *obj,
-                                                 unsigned long long operand,
-                                                 memory_order order,
-                                                 size_t obj_size);
-
-unsigned long long __fc_atomic_fetch_xor(void *obj,
-                                         unsigned long long operand,
-                                         size_t obj_size);
-
-unsigned long long __fc_atomic_fetch_xor_explicit(void *obj,
-                                                  unsigned long long operand,
-                                                  memory_order order,
-                                                  size_t obj_size);
-
-unsigned long long __fc_atomic_fetch_and(void *obj,
-                                         unsigned long long operand,
-                                         size_t obj_size);
-
-unsigned long long __fc_atomic_fetch_and_explicit(void *obj,
-                                                  unsigned long long operand,
-                                                  memory_order order,
-                                                  size_t obj_size);
-
-_Bool atomic_flag_test_and_set(atomic_flag volatile *object);
-
-_Bool atomic_flag_test_and_set_explicit(atomic_flag volatile *object,
-                                        memory_order order);
-
-void atomic_flag_clear(atomic_flag volatile *object);
-
-void atomic_flag_clear_explicit(atomic_flag volatile *object,
-                                memory_order order);
-
-/*@ assigns \nothing; */
-void __fc_atomic_init_marker(void *obj, unsigned long long value)
-{
-  return;
-}
-
-/*@ assigns \nothing; */
-void atomic_thread_fence(memory_order order)
-{
-  return;
-}
-
-/*@ assigns \nothing; */
-void atomic_signal_fence(memory_order order)
-{
-  return;
-}
-
-/*@ assigns \result;
-    assigns \result \from (indirect: obj), (indirect: obj_size);
- */
-_Bool __fc_atomic_is_lock_free(void *obj, size_t obj_size)
-{
-  _Bool __retres;
-  int tmp;
-  tmp = Frama_C_nondet(0,1);
-  __retres = (_Bool)(tmp != 0);
-  return __retres;
-}
-
-/*@ assigns *((char *)object + (0 .. obj_size - 1));
-    assigns *((char *)object + (0 .. obj_size - 1)) \from desired;
- */
-void __fc_atomic_store_marker(void *object, unsigned long long desired,
-                              size_t obj_size)
-{
-  return;
-}
-
-/*@ assigns *((char *)object + (0 .. obj_size - 1));
-    assigns *((char *)object + (0 .. obj_size - 1))
-      \from desired, (indirect: order);
- */
-void __fc_atomic_store_explicit_marker(void *object,
-                                       unsigned long long desired,
-                                       memory_order order, size_t obj_size)
-{
-  return;
-}
-
-/*@ assigns \result;
-    assigns \result
-      \from *((char *)obj + (0 .. obj_size - 1)), (indirect: obj_size);
- */
-unsigned long long __fc_atomic_load(void *obj, size_t obj_size)
-{
-  unsigned long long __retres;
-  if (obj_size == sizeof(char)) {
-    __retres = (unsigned long long)*((atomic_uchar volatile *)obj);
-    goto return_label;
-  }
-  else 
-    if (obj_size == sizeof(short)) {
-      __retres = (unsigned long long)*((atomic_ushort volatile *)obj);
-      goto return_label;
-    }
-    else 
-      if (obj_size == sizeof(int)) {
-        __retres = (unsigned long long)*((atomic_uint volatile *)obj);
-        goto return_label;
-      }
-      else 
-        if (obj_size == sizeof(long)) {
-          __retres = (unsigned long long)*((atomic_ulong volatile *)obj);
-          goto return_label;
-        }
-        else 
-          if (obj_size == sizeof(long long)) {
-            __retres = *((atomic_ullong volatile *)obj);
-            goto return_label;
-          }
-          else __FC_assert(0 != 0,"FRAMAC_SHARE/libc/stdatomic.c",53,"0");
-  __retres = (unsigned long long)0;
-  return_label: return __retres;
-}
-
-/*@ assigns \result;
-    assigns \result
-      \from *((char *)object + (0 .. obj_size - 1)), (indirect: order),
-            (indirect: obj_size);
- */
-unsigned long long __fc_atomic_load_explicit(void *object,
-                                             memory_order order,
-                                             size_t obj_size)
-{
-  unsigned long long tmp;
-  tmp = __fc_atomic_load(object,obj_size);
-  return tmp;
-}
-
-/*@ assigns \result, *((char *)obj + (0 .. obj_size - 1));
-    assigns \result
-      \from *((char *)obj + (0 .. obj_size - 1)), desired,
-            (indirect: obj_size);
-    assigns *((char *)obj + (0 .. obj_size - 1))
-      \from *((char *)obj + (0 .. obj_size - 1)), desired,
-            (indirect: obj_size);
- */
-unsigned long long __fc_atomic_exchange(void *obj,
-                                        unsigned long long desired,
-                                        size_t obj_size)
-{
-  unsigned long long r = (unsigned long long)0;
-  if (obj_size == sizeof(char)) {
-    r = (unsigned long long)*((atomic_uchar volatile *)obj);
-    *((atomic_uchar volatile *)obj) = (atomic_uchar)desired;
-  }
-  else 
-    if (obj_size == sizeof(short)) {
-      r = (unsigned long long)*((atomic_ushort volatile *)obj);
-      *((atomic_ushort volatile *)obj) = (atomic_ushort)desired;
-    }
-    else 
-      if (obj_size == sizeof(int)) {
-        r = (unsigned long long)*((atomic_uint volatile *)obj);
-        *((atomic_uint volatile *)obj) = (atomic_uint)desired;
-      }
-      else 
-        if (obj_size == sizeof(long)) {
-          r = (unsigned long long)*((atomic_ulong volatile *)obj);
-          *((atomic_ulong volatile *)obj) = (atomic_ulong)desired;
-        }
-        else 
-          if (obj_size == sizeof(long long)) {
-            r = *((atomic_ullong volatile *)obj);
-            *((atomic_ullong volatile *)obj) = desired;
-          }
-          else __FC_assert(0 != 0,"FRAMAC_SHARE/libc/stdatomic.c",82,"0");
-  return r;
-}
-
-/*@ assigns \result, *((char *)object + (0 .. obj_size - 1));
-    assigns \result
-      \from *((char *)object + (0 .. obj_size - 1)), desired,
-            (indirect: order), (indirect: obj_size);
-    assigns *((char *)object + (0 .. obj_size - 1))
-      \from *((char *)object + (0 .. obj_size - 1)), desired,
-            (indirect: order), (indirect: obj_size);
- */
-unsigned long long __fc_atomic_exchange_explicit(void *object,
-                                                 unsigned long long desired,
-                                                 memory_order order,
-                                                 size_t obj_size)
-{
-  unsigned long long tmp;
-  tmp = __fc_atomic_exchange(object,desired,obj_size);
-  return tmp;
-}
-
-/*@ assigns *((char *)object + (0 .. obj_size - 1)),
-            *((char *)expected + (0 .. obj_size - 1)), \result;
-    assigns *((char *)object + (0 .. obj_size - 1))
-      \from *((char *)object + (0 .. obj_size - 1)),
-            *((char *)expected + (0 .. obj_size - 1)), desired,
-            (indirect: obj_size);
-    assigns *((char *)expected + (0 .. obj_size - 1))
-      \from *((char *)object + (0 .. obj_size - 1)),
-            *((char *)expected + (0 .. obj_size - 1)), desired,
-            (indirect: obj_size);
-    assigns \result
-      \from (indirect: *((char *)object + (0 .. obj_size - 1))),
-            (indirect: *((char *)expected + (0 .. obj_size - 1))),
-            (indirect: obj_size);
- */
-_Bool __fc_atomic_compare_exchange_strong(void *object, void *expected,
-                                          unsigned long long desired,
-                                          size_t obj_size)
-{
-  _Bool __retres;
-  int r = memcmp((void const *)object,(void const *)expected,obj_size);
-  if (r == 0) memcpy(object,(void const *)(& desired),obj_size);
-  else memcpy(expected,(void const *)object,obj_size);
-  __retres = (_Bool)(r == 0);
-  return __retres;
-}
-
-/*@ assigns *((char *)object + (0 .. obj_size - 1)),
-            *((char *)expected + (0 .. obj_size - 1)), \result;
-    assigns *((char *)object + (0 .. obj_size - 1))
-      \from *((char *)object + (0 .. obj_size - 1)),
-            *((char *)expected + (0 .. obj_size - 1)), desired,
-            (indirect: success), (indirect: failure), (indirect: obj_size);
-    assigns *((char *)expected + (0 .. obj_size - 1))
-      \from *((char *)object + (0 .. obj_size - 1)),
-            *((char *)expected + (0 .. obj_size - 1)), desired,
-            (indirect: success), (indirect: failure), (indirect: obj_size);
-    assigns \result
-      \from (indirect: *((char *)object + (0 .. obj_size - 1))),
-            (indirect: *((char *)expected + (0 .. obj_size - 1))),
-            (indirect: success), (indirect: failure), (indirect: obj_size);
- */
-_Bool __fc_atomic_compare_exchange_strong_explicit(void *object,
-                                                   void *expected,
-                                                   unsigned long long desired,
-                                                   memory_order success,
-                                                   memory_order failure,
-                                                   size_t obj_size)
-{
-  _Bool tmp;
-  tmp = __fc_atomic_compare_exchange_strong(object,expected,desired,obj_size);
-  return tmp;
-}
-
-/*@ assigns *((char *)object + (0 .. obj_size - 1)),
-            *((char *)expected + (0 .. obj_size - 1)), \result;
-    assigns *((char *)object + (0 .. obj_size - 1))
-      \from *((char *)object + (0 .. obj_size - 1)),
-            *((char *)expected + (0 .. obj_size - 1)), desired,
-            (indirect: obj_size);
-    assigns *((char *)expected + (0 .. obj_size - 1))
-      \from *((char *)object + (0 .. obj_size - 1)),
-            *((char *)expected + (0 .. obj_size - 1)), desired,
-            (indirect: obj_size);
-    assigns \result
-      \from (indirect: *((char *)object + (0 .. obj_size - 1))),
-            (indirect: *((char *)expected + (0 .. obj_size - 1))),
-            (indirect: desired), (indirect: obj_size);
- */
-_Bool __fc_atomic_compare_exchange_weak(void *object, void *expected,
-                                        unsigned long long desired,
-                                        size_t obj_size)
-{
-  _Bool tmp;
-  tmp = __fc_atomic_compare_exchange_strong(object,expected,desired,obj_size);
-  return tmp;
-}
-
-/*@ assigns *((char *)object + (0 .. obj_size - 1)),
-            *((char *)expected + (0 .. obj_size - 1)), \result;
-    assigns *((char *)object + (0 .. obj_size - 1))
-      \from *((char *)object + (0 .. obj_size - 1)),
-            *((char *)expected + (0 .. obj_size - 1)), desired,
-            (indirect: success), (indirect: failure), (indirect: obj_size);
-    assigns *((char *)expected + (0 .. obj_size - 1))
-      \from *((char *)object + (0 .. obj_size - 1)),
-            *((char *)expected + (0 .. obj_size - 1)), desired,
-            (indirect: success), (indirect: failure), (indirect: obj_size);
-    assigns \result
-      \from (indirect: *((char *)object + (0 .. obj_size - 1))),
-            (indirect: *((char *)expected + (0 .. obj_size - 1))),
-            (indirect: desired), (indirect: success), (indirect: failure),
-            (indirect: obj_size);
- */
-_Bool __fc_atomic_compare_exchange_weak_explicit(void *object,
-                                                 void *expected,
-                                                 unsigned long long desired,
-                                                 memory_order success,
-                                                 memory_order failure,
-                                                 size_t obj_size)
-{
-  _Bool tmp;
-  tmp = __fc_atomic_compare_exchange_strong(object,expected,desired,obj_size);
-  return tmp;
-}
-
-/*@ assigns *((char *)obj + (0 .. obj_size - 1)), \result;
-    assigns *((char *)obj + (0 .. obj_size - 1))
-      \from *((char *)obj + (0 .. obj_size - 1)), operand,
-            (indirect: obj_size);
-    assigns \result
-      \from *((char *)obj + (0 .. obj_size - 1)), operand,
-            (indirect: obj_size);
- */
-unsigned long long __fc_atomic_fetch_add(void *obj,
-                                         unsigned long long operand,
-                                         size_t obj_size)
-{
-  unsigned long long r = (unsigned long long)0;
-  if (obj_size == sizeof(char)) {
-    r = (unsigned long long)*((atomic_uchar volatile *)obj);
-    *((atomic_uchar volatile *)obj) = (atomic_uchar)((unsigned long long)*((atomic_uchar volatile *)obj) + operand);
-  }
-  else 
-    if (obj_size == sizeof(short)) {
-      r = (unsigned long long)*((atomic_ushort volatile *)obj);
-      *((atomic_ushort volatile *)obj) = (atomic_ushort)((unsigned long long)*((atomic_ushort volatile *)obj) + operand);
-    }
-    else 
-      if (obj_size == sizeof(int)) {
-        r = (unsigned long long)*((atomic_uint volatile *)obj);
-        *((atomic_uint volatile *)obj) = (atomic_uint)((unsigned long long)*((atomic_uint volatile *)obj) + operand);
-      }
-      else 
-        if (obj_size == sizeof(long)) {
-          r = (unsigned long long)*((atomic_ulong volatile *)obj);
-          *((atomic_ulong volatile *)obj) = (atomic_ulong)((unsigned long long)*((atomic_ulong volatile *)obj) + operand);
-        }
-        else 
-          if (obj_size == sizeof(long long)) {
-            r = *((atomic_ullong volatile *)obj);
-            *((atomic_ullong volatile *)obj) += operand;
-          }
-          else __FC_assert(0 != 0,"FRAMAC_SHARE/libc/stdatomic.c",142,"0");
-  return r;
-}
-
-/*@ assigns *((char *)obj + (0 .. obj_size - 1)), \result;
-    assigns *((char *)obj + (0 .. obj_size - 1))
-      \from *((char *)obj + (0 .. obj_size - 1)), operand, (indirect: order),
-            (indirect: obj_size);
-    assigns \result
-      \from *((char *)obj + (0 .. obj_size - 1)), operand, (indirect: order),
-            (indirect: obj_size);
- */
-unsigned long long __fc_atomic_fetch_add_explicit(void *obj,
-                                                  unsigned long long operand,
-                                                  memory_order order,
-                                                  size_t obj_size)
-{
-  unsigned long long tmp;
-  tmp = __fc_atomic_fetch_add(obj,operand,obj_size);
-  return tmp;
-}
-
-/*@ assigns *((char *)obj + (0 .. obj_size - 1)), \result;
-    assigns *((char *)obj + (0 .. obj_size - 1))
-      \from *((char *)obj + (0 .. obj_size - 1)), operand,
-            (indirect: obj_size);
-    assigns \result
-      \from *((char *)obj + (0 .. obj_size - 1)), operand,
-            (indirect: obj_size);
- */
-unsigned long long __fc_atomic_fetch_sub(void *obj,
-                                         unsigned long long operand,
-                                         size_t obj_size)
-{
-  unsigned long long r = (unsigned long long)0;
-  if (obj_size == sizeof(char)) {
-    r = (unsigned long long)*((atomic_uchar volatile *)obj);
-    *((atomic_uchar volatile *)obj) = (atomic_uchar)((unsigned long long)*((atomic_uchar volatile *)obj) - operand);
-  }
-  else 
-    if (obj_size == sizeof(short)) {
-      r = (unsigned long long)*((atomic_ushort volatile *)obj);
-      *((atomic_ushort volatile *)obj) = (atomic_ushort)((unsigned long long)*((atomic_ushort volatile *)obj) - operand);
-    }
-    else 
-      if (obj_size == sizeof(int)) {
-        r = (unsigned long long)*((atomic_uint volatile *)obj);
-        *((atomic_uint volatile *)obj) = (atomic_uint)((unsigned long long)*((atomic_uint volatile *)obj) - operand);
-      }
-      else 
-        if (obj_size == sizeof(long)) {
-          r = (unsigned long long)*((atomic_ulong volatile *)obj);
-          *((atomic_ulong volatile *)obj) = (atomic_ulong)((unsigned long long)*((atomic_ulong volatile *)obj) - operand);
-        }
-        else 
-          if (obj_size == sizeof(long long)) {
-            r = *((atomic_ullong volatile *)obj);
-            *((atomic_ullong volatile *)obj) -= operand;
-          }
-          else __FC_assert(0 != 0,"FRAMAC_SHARE/libc/stdatomic.c",166,"0");
-  return r;
-}
-
-/*@ assigns *((char *)obj + (0 .. obj_size - 1)), \result;
-    assigns *((char *)obj + (0 .. obj_size - 1))
-      \from *((char *)obj + (0 .. obj_size - 1)), operand, (indirect: order),
-            (indirect: obj_size);
-    assigns \result
-      \from *((char *)obj + (0 .. obj_size - 1)), operand, (indirect: order),
-            (indirect: obj_size);
- */
-unsigned long long __fc_atomic_fetch_sub_explicit(void *obj,
-                                                  unsigned long long operand,
-                                                  memory_order order,
-                                                  size_t obj_size)
-{
-  unsigned long long tmp;
-  tmp = __fc_atomic_fetch_sub(obj,operand,obj_size);
-  return tmp;
-}
-
-/*@ assigns *((char *)obj + (0 .. obj_size - 1)), \result;
-    assigns *((char *)obj + (0 .. obj_size - 1))
-      \from *((char *)obj + (0 .. obj_size - 1)), operand,
-            (indirect: obj_size);
-    assigns \result
-      \from *((char *)obj + (0 .. obj_size - 1)), operand,
-            (indirect: obj_size);
- */
-unsigned long long __fc_atomic_fetch_or(void *obj,
-                                        unsigned long long operand,
-                                        size_t obj_size)
-{
-  unsigned long long r = (unsigned long long)0;
-  if (obj_size == sizeof(char)) {
-    r = (unsigned long long)*((atomic_uchar volatile *)obj);
-    *((atomic_uchar volatile *)obj) = (atomic_uchar)((unsigned long long)*((atomic_uchar volatile *)obj) | operand);
-  }
-  else 
-    if (obj_size == sizeof(short)) {
-      r = (unsigned long long)*((atomic_ushort volatile *)obj);
-      *((atomic_ushort volatile *)obj) = (atomic_ushort)((unsigned long long)*((atomic_ushort volatile *)obj) | operand);
-    }
-    else 
-      if (obj_size == sizeof(int)) {
-        r = (unsigned long long)*((atomic_uint volatile *)obj);
-        *((atomic_uint volatile *)obj) = (atomic_uint)((unsigned long long)*((atomic_uint volatile *)obj) | operand);
-      }
-      else 
-        if (obj_size == sizeof(long)) {
-          r = (unsigned long long)*((atomic_ulong volatile *)obj);
-          *((atomic_ulong volatile *)obj) = (atomic_ulong)((unsigned long long)*((atomic_ulong volatile *)obj) | operand);
-        }
-        else 
-          if (obj_size == sizeof(long long)) {
-            r = *((atomic_ullong volatile *)obj);
-            *((atomic_ullong volatile *)obj) |= operand;
-          }
-          else __FC_assert(0 != 0,"FRAMAC_SHARE/libc/stdatomic.c",190,"0");
-  return r;
-}
-
-/*@ assigns *((char *)obj + (0 .. obj_size - 1)), \result;
-    assigns *((char *)obj + (0 .. obj_size - 1))
-      \from *((char *)obj + (0 .. obj_size - 1)), operand, (indirect: order),
-            (indirect: obj_size);
-    assigns \result
-      \from *((char *)obj + (0 .. obj_size - 1)), operand, (indirect: order),
-            (indirect: obj_size);
- */
-unsigned long long __fc_atomic_fetch_or_explicit(void *obj,
-                                                 unsigned long long operand,
-                                                 memory_order order,
-                                                 size_t obj_size)
-{
-  unsigned long long tmp;
-  tmp = __fc_atomic_fetch_or(obj,operand,obj_size);
-  return tmp;
-}
-
-/*@ assigns *((char *)obj + (0 .. obj_size - 1)), \result;
-    assigns *((char *)obj + (0 .. obj_size - 1))
-      \from *((char *)obj + (0 .. obj_size - 1)), operand,
-            (indirect: obj_size);
-    assigns \result
-      \from *((char *)obj + (0 .. obj_size - 1)), operand,
-            (indirect: obj_size);
- */
-unsigned long long __fc_atomic_fetch_xor(void *obj,
-                                         unsigned long long operand,
-                                         size_t obj_size)
-{
-  unsigned long long r = (unsigned long long)0;
-  if (obj_size == sizeof(char)) {
-    r = (unsigned long long)*((atomic_uchar volatile *)obj);
-    *((atomic_uchar volatile *)obj) = (atomic_uchar)((unsigned long long)*((atomic_uchar volatile *)obj) ^ operand);
-  }
-  else 
-    if (obj_size == sizeof(short)) {
-      r = (unsigned long long)*((atomic_ushort volatile *)obj);
-      *((atomic_ushort volatile *)obj) = (atomic_ushort)((unsigned long long)*((atomic_ushort volatile *)obj) ^ operand);
-    }
-    else 
-      if (obj_size == sizeof(int)) {
-        r = (unsigned long long)*((atomic_uint volatile *)obj);
-        *((atomic_uint volatile *)obj) = (atomic_uint)((unsigned long long)*((atomic_uint volatile *)obj) ^ operand);
-      }
-      else 
-        if (obj_size == sizeof(long)) {
-          r = (unsigned long long)*((atomic_ulong volatile *)obj);
-          *((atomic_ulong volatile *)obj) = (atomic_ulong)((unsigned long long)*((atomic_ulong volatile *)obj) ^ operand);
-        }
-        else 
-          if (obj_size == sizeof(long long)) {
-            r = *((atomic_ullong volatile *)obj);
-            *((atomic_ullong volatile *)obj) ^= operand;
-          }
-          else __FC_assert(0 != 0,"FRAMAC_SHARE/libc/stdatomic.c",220,"0");
-  return r;
-}
-
-/*@ assigns *((char *)obj + (0 .. obj_size - 1)), \result;
-    assigns *((char *)obj + (0 .. obj_size - 1))
-      \from *((char *)obj + (0 .. obj_size - 1)), operand, (indirect: order),
-            (indirect: obj_size);
-    assigns \result
-      \from *((char *)obj + (0 .. obj_size - 1)), operand, (indirect: order),
-            (indirect: obj_size);
- */
-unsigned long long __fc_atomic_fetch_xor_explicit(void *obj,
-                                                  unsigned long long operand,
-                                                  memory_order order,
-                                                  size_t obj_size)
-{
-  unsigned long long tmp;
-  tmp = __fc_atomic_fetch_xor(obj,operand,obj_size);
-  return tmp;
-}
-
-/*@ assigns *((char *)obj + (0 .. obj_size - 1)), \result;
-    assigns *((char *)obj + (0 .. obj_size - 1))
-      \from *((char *)obj + (0 .. obj_size - 1)), operand,
-            (indirect: obj_size);
-    assigns \result
-      \from *((char *)obj + (0 .. obj_size - 1)), operand,
-            (indirect: obj_size);
- */
-unsigned long long __fc_atomic_fetch_and(void *obj,
-                                         unsigned long long operand,
-                                         size_t obj_size)
-{
-  unsigned long long r = (unsigned long long)0;
-  if (obj_size == sizeof(char)) {
-    r = (unsigned long long)*((atomic_uchar volatile *)obj);
-    *((atomic_uchar volatile *)obj) = (atomic_uchar)((unsigned long long)*((atomic_uchar volatile *)obj) & operand);
-  }
-  else 
-    if (obj_size == sizeof(short)) {
-      r = (unsigned long long)*((atomic_ushort volatile *)obj);
-      *((atomic_ushort volatile *)obj) = (atomic_ushort)((unsigned long long)*((atomic_ushort volatile *)obj) & operand);
-    }
-    else 
-      if (obj_size == sizeof(int)) {
-        r = (unsigned long long)*((atomic_uint volatile *)obj);
-        *((atomic_uint volatile *)obj) = (atomic_uint)((unsigned long long)*((atomic_uint volatile *)obj) & operand);
-      }
-      else 
-        if (obj_size == sizeof(long)) {
-          r = (unsigned long long)*((atomic_ulong volatile *)obj);
-          *((atomic_ulong volatile *)obj) = (atomic_ulong)((unsigned long long)*((atomic_ulong volatile *)obj) & operand);
-        }
-        else 
-          if (obj_size == sizeof(long long)) {
-            r = *((atomic_ullong volatile *)obj);
-            *((atomic_ullong volatile *)obj) &= operand;
-          }
-          else __FC_assert(0 != 0,"FRAMAC_SHARE/libc/stdatomic.c",250,"0");
-  return r;
-}
-
-/*@ assigns *((char *)obj + (0 .. obj_size - 1)), \result;
-    assigns *((char *)obj + (0 .. obj_size - 1))
-      \from *((char *)obj + (0 .. obj_size - 1)), operand, (indirect: order),
-            (indirect: obj_size);
-    assigns \result
-      \from *((char *)obj + (0 .. obj_size - 1)), operand, (indirect: order),
-            (indirect: obj_size);
- */
-unsigned long long __fc_atomic_fetch_and_explicit(void *obj,
-                                                  unsigned long long operand,
-                                                  memory_order order,
-                                                  size_t obj_size)
-{
-  unsigned long long tmp;
-  tmp = __fc_atomic_fetch_and(obj,operand,obj_size);
-  return tmp;
-}
-
-/*@ assigns *object, \result;
-    assigns *object \from *object;
-    assigns \result \from (indirect: object);
- */
-_Bool atomic_flag_test_and_set(atomic_flag volatile *object)
-{
-  _Bool r = (_Bool)((int)object->__fc_val != 0);
-  object->__fc_val = (unsigned char)1;
-  return r;
-}
-
-/*@ assigns *object, \result;
-    assigns *object \from *object, (indirect: order);
-    assigns \result \from (indirect: object), (indirect: order);
- */
-_Bool atomic_flag_test_and_set_explicit(atomic_flag volatile *object,
-                                        memory_order order)
-{
-  _Bool r = (_Bool)((int)object->__fc_val != 0);
-  object->__fc_val = (unsigned char)1;
-  return r;
-}
-
-/*@ assigns *object;
-    assigns *object \from *object; */
-void atomic_flag_clear(atomic_flag volatile *object)
-{
-  object->__fc_val = (unsigned char)0;
-  return;
-}
-
-/*@ assigns *object;
-    assigns *object \from *object, (indirect: order); */
-void atomic_flag_clear_explicit(atomic_flag volatile *object,
-                                memory_order order)
-{
-  object->__fc_val = (unsigned char)0;
-  return;
-}
-
-FILE *__fc_stderr;
-
-FILE *__fc_stdin;
-
-FILE *__fc_stdout;
-
-/*@ requires valid_filename: valid_read_string(filename);
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result;
-    assigns \result
-      \from (indirect: *(filename + (0 .. strlen{Old}(filename))));
- */
-extern int remove(char const *filename);
-
-/*@ requires valid_old_name: valid_read_string(old_name);
-    requires valid_new_name: valid_read_string(new_name);
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result;
-    assigns \result
-      \from (indirect: *(old_name + (0 .. strlen{Old}(old_name)))),
-            (indirect: *(new_name + (0 .. strlen{Old}(new_name))));
- */
-extern int rename(char const *old_name, char const *new_name);
-
-FILE __fc_fopen[16];
-FILE * const __fc_p_fopen = __fc_fopen;
-/*@ ensures
-      result_null_or_valid_fd:
-        \result ≡ \null ∨ \subset(\result, &__fc_fopen[0 .. 16 - 1]);
-    assigns \result;
-    assigns \result \from __fc_p_fopen;
- */
-extern FILE *tmpfile(void);
-
-char __fc_tmpnam[20];
-char * const __fc_p_tmpnam = __fc_tmpnam;
-/*@ requires valid_s_or_null: s ≡ \null ∨ \valid(s + (0 .. 20));
-    ensures
-      result_string_or_null:
-        \result ≡ \null ∨ \result ≡ \old(s) ∨
-        \result ≡ __fc_p_tmpnam;
-    assigns *(__fc_p_tmpnam + (0 .. 20)), *(s + (0 .. 20)), \result;
-    assigns *(__fc_p_tmpnam + (0 .. 20))
-      \from *(__fc_p_tmpnam + (0 .. 20)), (indirect: s);
-    assigns *(s + (0 .. 20))
-      \from (indirect: s), *(__fc_p_tmpnam + (0 .. 20));
-    assigns \result \from s, __fc_p_tmpnam;
- */
-extern char *tmpnam(char *s);
-
-/*@ requires valid_stream: \valid(stream);
-    ensures result_zero_or_EOF: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result;
-    assigns \result \from (indirect: stream), (indirect: *stream);
- */
-extern int fclose(FILE *stream);
-
-/*@ requires null_or_valid_stream: stream ≡ \null ∨ \valid_read(stream);
-    ensures result_zero_or_EOF: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result, *stream, __fc_fopen[0 .. 16 - 1];
-    assigns \result
-      \from (indirect: *stream), (indirect: __fc_fopen[0 .. 16 - 1]);
-    assigns *stream
-      \from (indirect: stream), *stream, __fc_fopen[0 .. 16 - 1];
-    assigns __fc_fopen[0 .. 16 - 1]
-      \from (indirect: stream), *stream, __fc_fopen[0 .. 16 - 1];
-    
-    behavior flush_all:
-      assumes all_streams: stream ≡ \null;
-      assigns __fc_fopen[0 .. 16 - 1], \result;
-      assigns __fc_fopen[0 .. 16 - 1] \from __fc_fopen[0 .. 16 - 1];
-      assigns \result \from (indirect: __fc_fopen[0 .. 16 - 1]);
-    
-    behavior flush_stream:
-      assumes single_stream: stream ≢ \null;
-      assigns *stream, \result;
-      assigns *stream \from *stream;
-      assigns \result \from (indirect: *stream);
-    
-    complete behaviors flush_stream, flush_all;
-    disjoint behaviors flush_stream, flush_all;
- */
-extern int fflush(FILE *stream);
-
-/*@ requires valid_filename: valid_read_string(filename);
-    requires valid_mode: valid_read_string(mode);
-    ensures
-      result_null_or_valid_fd:
-        \result ≡ \null ∨ \subset(\result, &__fc_fopen[0 .. 16 - 1]);
-    assigns \result;
-    assigns \result
-      \from (indirect: *(filename + (0 .. strlen{Old}(filename)))),
-            (indirect: *(mode + (0 .. strlen{Old}(mode)))), __fc_p_fopen;
- */
-extern FILE *fopen(char const * restrict filename, char const * restrict mode);
-
-/*@ requires valid_mode: valid_read_string(mode);
-    ensures
-      result_null_or_valid_fd:
-        \result ≡ \null ∨ \subset(\result, &__fc_fopen[0 .. 16 - 1]);
-    assigns \result, __fc_fopen[fd];
-    assigns \result
-      \from (indirect: fd), (indirect: *(mode + (0 .. strlen{Old}(mode)))),
-            (indirect: __fc_fopen[fd]), __fc_p_fopen;
-    assigns __fc_fopen[fd]
-      \from (indirect: fd), (indirect: *(mode + (0 .. strlen{Old}(mode)))),
-            (indirect: __fc_fopen[fd]), __fc_p_fopen;
- */
-extern FILE *fdopen(int fd, char const *mode);
-
-/*@ requires valid_filename: valid_read_string(filename);
-    requires valid_mode: valid_read_string(mode);
-    requires valid_stream: \valid(stream);
-    ensures
-      result_null_or_valid_fd:
-        \result ≡ \null ∨ \result ∈ &__fc_fopen[0 .. 16 - 1];
-    ensures stream_opened: *\old(stream) ∈ __fc_fopen[0 .. 16 - 1];
-    assigns \result, *stream;
-    assigns \result
-      \from (indirect: *(filename + (..))), (indirect: *(mode + (..))),
-            __fc_p_fopen, (indirect: stream);
-    assigns *stream
-      \from (indirect: *(filename + (..))), (indirect: *(mode + (..))),
-            __fc_p_fopen, (indirect: stream);
- */
-extern FILE *freopen(char const * restrict filename,
-                     char const * restrict mode, FILE * restrict stream);
-
-/*@ assigns *stream;
-    assigns *stream \from buf; */
-extern void setbuf(FILE * restrict stream, char * restrict buf);
-
-/*@ assigns *stream;
-    assigns *stream \from buf, mode, size; */
-extern int setvbuf(FILE * restrict stream, char * restrict buf, int mode,
-                   size_t size);
-
-/*@ axiomatic format_length {
-      logic ℤ format_length{L}(char *format) ;
-      
-      }
-
-*/
-/*@ assigns *stream, \result;
-    assigns *stream \from *(format + (..)), (indirect: arg);
-    assigns \result \from (indirect: *(format + (..))), (indirect: arg);
- */
-extern int vfprintf(FILE * restrict stream, char const * restrict format,
-                    va_list arg);
-
-int vfscanf(FILE * restrict stream, char const * restrict format, va_list arg);
-
-/*@ assigns *__fc_stdout;
-    assigns *__fc_stdout \from arg; */
-extern int vprintf(char const * restrict format, va_list arg);
-
-int vscanf(char const * restrict format, va_list arg);
-
-/*@ assigns *(s + (0 .. n - 1));
-    assigns *(s + (0 .. n - 1)) \from *(format + (..)), arg;
- */
-extern int vsnprintf(char * restrict s, size_t n,
-                     char const * restrict format, va_list arg);
-
-/*@ assigns *(s + (0 ..));
-    assigns *(s + (0 ..)) \from *(format + (..)), arg;
- */
-extern int vsprintf(char * restrict s, char const * restrict format,
-                    va_list arg);
-
-int fgetc(FILE * restrict stream);
-
-char *fgets(char * restrict s, int size, FILE * restrict stream);
-
-/*@ requires valid_stream: \valid(stream);
-    assigns *stream, \result;
-    assigns *stream \from c, *stream;
-    assigns \result \from (indirect: *stream);
- */
-extern int fputc(int c, FILE *stream);
-
-/*@ requires valid_string_s: valid_read_string(s);
-    assigns *stream, \result;
-    assigns *stream \from *(s + (0 .. strlen{Old}(s))), *stream;
-    assigns \result
-      \from (indirect: *(s + (0 .. strlen{Old}(s)))), (indirect: *stream);
- */
-extern int fputs(char const * restrict s, FILE * restrict stream);
-
-/*@ requires valid_stream: \valid(stream);
-    assigns \result, *stream;
-    assigns \result \from *stream;
-    assigns *stream \from *stream;
- */
-extern int getc(FILE *stream);
-
-int getchar(void);
-
-/*@ axiomatic GetsLength {
-      logic size_t gets_length{L}
-        reads *__fc_stdin;
-      
-      }
-
-*/
-/*@ requires room_s: \valid(s + (0 .. gets_length));
-    ensures result_null_or_same: \result ≡ \old(s) ∨ \result ≡ \null;
-    assigns *(s + (0 .. gets_length{Old})), \result, *__fc_stdin;
-    assigns *(s + (0 .. gets_length{Old})) \from *__fc_stdin;
-    assigns \result \from s, *__fc_stdin;
-    assigns *__fc_stdin \from *__fc_stdin;
- */
-extern char *gets(char *s);
-
-/*@ requires valid_stream: \valid(stream);
-    assigns *stream, \result;
-    assigns *stream \from c, *stream;
-    assigns \result \from (indirect: *stream);
- */
-extern int putc(int c, FILE *stream);
-
-/*@ assigns *__fc_stdout, \result;
-    assigns *__fc_stdout \from c, *__fc_stdout;
-    assigns \result \from (indirect: *__fc_stdout);
- */
-extern int putchar(int c);
-
-/*@ requires valid_string_s: valid_read_string(s);
-    assigns *__fc_stdout, \result;
-    assigns *__fc_stdout \from *(s + (0 .. strlen{Old}(s))), *__fc_stdout;
-    assigns \result
-      \from (indirect: *(s + (0 .. strlen{Old}(s)))),
-            (indirect: *__fc_stdout);
- */
-extern int puts(char const *s);
-
-/*@ requires valid_stream: \valid(stream);
-    ensures result_ok_or_error: \result ≡ \old(c) ∨ \result ≡ -1;
-    assigns *stream, \result;
-    assigns *stream \from (indirect: c);
-    assigns \result \from (indirect: c), (indirect: *stream);
- */
-extern int ungetc(int c, FILE *stream);
-
-/*@ requires valid_ptr_block: \valid((char *)ptr + (0 .. nmemb * size - 1));
-    requires valid_stream: \valid(stream);
-    ensures size_read: \result ≤ \old(nmemb);
-    ensures
-      initialization:
-        \initialized((char *)\old(ptr) + (0 .. \result * \old(size) - 1));
-    assigns *((char *)ptr + (0 .. nmemb * size - 1)), *stream, \result;
-    assigns *((char *)ptr + (0 .. nmemb * size - 1))
-      \from (indirect: size), (indirect: nmemb), (indirect: *stream);
-    assigns *stream
-      \from (indirect: size), (indirect: nmemb), (indirect: *stream);
-    assigns \result \from size, (indirect: *stream);
- */
-extern size_t fread(void * restrict ptr, size_t size, size_t nmemb,
-                    FILE * restrict stream);
-
-/*@ requires
-      valid_ptr_block: \valid_read((char *)ptr + (0 .. nmemb * size - 1));
-    requires valid_stream: \valid(stream);
-    ensures size_written: \result ≤ \old(nmemb);
-    assigns *stream, \result;
-    assigns *stream
-      \from (indirect: *((char *)ptr + (0 .. nmemb * size - 1)));
-    assigns \result
-      \from (indirect: *((char *)ptr + (0 .. nmemb * size - 1)));
- */
-extern size_t fwrite(void const * restrict ptr, size_t size, size_t nmemb,
-                     FILE * restrict stream);
-
-/*@ requires valid_stream: \valid(stream);
-    requires valid_pos: \valid(pos);
-    ensures initialization: pos: \initialized(\old(pos));
-    assigns \result, *pos;
-    assigns \result \from (indirect: *stream);
-    assigns *pos \from (indirect: *stream);
- */
-extern int fgetpos(FILE * restrict stream, fpos_t * restrict pos);
-
-/*@ requires valid_stream: \valid(stream);
-    requires whence_enum: whence ≡ 0 ∨ whence ≡ 1 ∨ whence ≡ 2;
-    ensures
-      errno_set: __fc_errno ∈ {11, 9, 27, 4, 22, 5, 28, 75, 32, 29, 6};
-    assigns *stream, \result, __fc_errno;
-    assigns *stream \from *stream, (indirect: offset), (indirect: whence);
-    assigns \result
-      \from (indirect: *stream), (indirect: offset), (indirect: whence);
-    assigns __fc_errno
-      \from (indirect: *stream), (indirect: offset), (indirect: whence);
- */
-extern int fseek(FILE *stream, long offset, int whence);
-
-/*@ requires valid_stream: \valid(stream);
-    requires whence_enum: whence ≡ 0 ∨ whence ≡ 1 ∨ whence ≡ 2;
-    ensures
-      errno_set: __fc_errno ∈ {11, 9, 27, 4, 22, 5, 28, 75, 32, 29, 6};
-    assigns *stream, \result, __fc_errno;
-    assigns *stream \from *stream, (indirect: offset), (indirect: whence);
-    assigns \result
-      \from (indirect: *stream), (indirect: offset), (indirect: whence);
-    assigns __fc_errno
-      \from (indirect: *stream), (indirect: offset), (indirect: whence);
- */
-extern int fseeko(FILE *stream, off_t offset, int whence);
-
-/*@ requires valid_stream: \valid(stream);
-    requires valid_pos: \valid_read(pos);
-    requires initialization: pos: \initialized(pos);
-    ensures errno_set: __fc_errno ∈ {11, 9, 27, 4, 5, 28, 32, 29, 6};
-    assigns *stream, \result, __fc_errno;
-    assigns *stream \from *pos;
-    assigns \result \from (indirect: *stream), (indirect: *pos);
-    assigns __fc_errno
-      \from __fc_errno, (indirect: *stream), (indirect: *pos);
- */
-extern int fsetpos(FILE *stream, fpos_t const *pos);
-
-/*@ requires valid_stream: \valid(stream);
-    ensures
-      success_or_error:
-        \result ≡ -1 ∨
-        (\result ≥ 0 ∧ __fc_errno ≡ \old(__fc_errno));
-    ensures errno_set: __fc_errno ∈ {9, 75, 29};
-    assigns \result, __fc_errno;
-    assigns \result \from (indirect: *stream);
-    assigns __fc_errno \from (indirect: *stream);
- */
-extern long ftell(FILE *stream);
-
-/*@ requires valid_stream: \valid(stream);
-    ensures
-      success_or_error:
-        \result ≡ -1 ∨
-        (\result ≥ 0 ∧ __fc_errno ≡ \old(__fc_errno));
-    ensures errno_set: __fc_errno ∈ {9, 75, 29};
-    assigns \result, __fc_errno;
-    assigns \result \from (indirect: *stream);
-    assigns __fc_errno \from (indirect: *stream);
- */
-extern off_t ftello(FILE *stream);
-
-/*@ requires valid_stream: \valid(stream);
-    assigns *stream;
-    assigns *stream \from \nothing;
- */
-extern void rewind(FILE *stream);
-
-/*@ requires valid_stream: \valid(stream);
-    assigns *stream;
-    assigns *stream \from \nothing;
- */
-extern void clearerr(FILE *stream);
-
-/*@ requires valid_stream: \valid(stream);
-    assigns \result;
-    assigns \result \from (indirect: *stream);
- */
-extern int feof(FILE *stream);
-
-/*@ requires valid_stream: \valid(stream);
-    assigns \result;
-    assigns \result \from (indirect: *stream);
- */
-extern int fileno(FILE *stream);
-
-/*@ requires valid_stream: \valid(stream);
-    assigns *stream;
-    assigns *stream \from \nothing;
- */
-extern void flockfile(FILE *stream);
-
-/*@ requires valid_stream: \valid(stream);
-    assigns *stream;
-    assigns *stream \from \nothing;
- */
-extern void funlockfile(FILE *stream);
-
-/*@ requires valid_stream: \valid(stream);
-    assigns \result, *stream;
-    assigns \result \from \nothing;
-    assigns *stream \from \nothing;
- */
-extern int ftrylockfile(FILE *stream);
-
-/*@ requires valid_stream: \valid(stream);
-    assigns \result;
-    assigns \result \from (indirect: *stream);
- */
-extern int ferror(FILE *stream);
-
-/*@ requires valid_string_s: valid_read_string(s);
-    assigns __fc_stdout;
-    assigns __fc_stdout \from __fc_errno, *(s + (0 .. strlen{Old}(s)));
- */
-extern void perror(char const *s);
-
-/*@ requires valid_stream: \valid(stream);
-    assigns \result, *stream;
-    assigns \result \from *stream;
-    assigns *stream \from *stream;
- */
-extern int getc_unlocked(FILE *stream);
-
-/*@ assigns \result;
-    assigns \result \from *__fc_stdin; */
-extern int getchar_unlocked(void);
-
-/*@ requires valid_stream: \valid(stream);
-    assigns *stream, \result;
-    assigns *stream \from c;
-    assigns \result \from (indirect: *stream);
- */
-extern int putc_unlocked(int c, FILE *stream);
-
-/*@ assigns *__fc_stdout, \result;
-    assigns *__fc_stdout \from c;
-    assigns \result \from (indirect: *__fc_stdout);
- */
-extern int putchar_unlocked(int c);
-
-/*@ requires valid_stream: \valid(stream);
-    assigns *stream;
-    assigns *stream \from \nothing;
- */
-extern void clearerr_unlocked(FILE *stream);
-
-/*@ requires valid_stream: \valid(stream);
-    assigns \result;
-    assigns \result \from (indirect: *stream);
- */
-extern int feof_unlocked(FILE *stream);
-
-/*@ requires valid_stream: \valid(stream);
-    assigns \result;
-    assigns \result \from (indirect: *stream);
- */
-extern int ferror_unlocked(FILE *stream);
-
-/*@ requires valid_stream: \valid(stream);
-    assigns \result;
-    assigns \result \from (indirect: *stream);
- */
-extern int fileno_unlocked(FILE *stream);
-
-/*@ axiomatic pipe_streams {
-      predicate is_open_pipe{L}(FILE *stream) ;
-      
-      }
-
-*/
-/*@ requires valid_command: valid_read_string(command);
-    requires valid_type: valid_read_string(type);
-    ensures
-      result_error_or_valid_open_pipe:
-        \result ≡ \null ∨
-        (\subset(\result, &__fc_fopen[0 .. 16 - 1]) ∧ is_open_pipe(\result));
-    assigns \result, __fc_fopen[0 ..];
-    assigns \result
-      \from (indirect: *command), (indirect: *type), __fc_p_fopen;
-    assigns __fc_fopen[0 ..]
-      \from (indirect: *command), (indirect: *type), __fc_fopen[0 ..];
- */
-extern FILE *popen(char const *command, char const *type);
-
-/*@ requires valid_stream: \valid(stream);
-    requires open_pipe: is_open_pipe(stream);
-    ensures closed_stream: ¬is_open_pipe(\old(stream));
-    assigns \result;
-    assigns \result \from (indirect: *stream);
- */
-extern int pclose(FILE *stream);
-
-ssize_t getline(char **lineptr, size_t *n, FILE *stream);
-
-FILE *fmemopen(void * restrict buf, size_t size, char const * restrict mode);
-
-int asprintf(char **strp, char const *fmt, void * const *__va_params);
-
-int vasprintf(char **strp, char const *fmt, va_list ap);
-
-FILE __fc_initial_stdout =
-  {.__fc_FILE_id = (unsigned int)1, .__fc_FILE_data = 0U};
-FILE *__fc_stdout = & __fc_initial_stdout;
-FILE __fc_initial_stderr =
-  {.__fc_FILE_id = (unsigned int)2, .__fc_FILE_data = 0U};
-FILE *__fc_stderr = & __fc_initial_stderr;
-FILE __fc_initial_stdin =
-  {.__fc_FILE_id = (unsigned int)0, .__fc_FILE_data = 0U};
-FILE *__fc_stdin = & __fc_initial_stdin;
-/*@ requires valid_mode: valid_read_string(mode);
-    assigns \result;
-    assigns \result \from *(mode + (0 .. strlen{Old}(mode)));
- */
-static _Bool is_valid_mode(char const *mode)
-{
-  _Bool __retres;
-  if (! ((int)*(mode + 0) != 'r')) 
-    if (! ((int)*(mode + 0) != 'w')) 
-      if (! ((int)*(mode + 0) != 'a')) {
-        __retres = (_Bool)0;
-        goto return_label;
-      }
-  if (! *(mode + 1)) {
-    __retres = (_Bool)1;
-    goto return_label;
-  }
-  if (! ((int)*(mode + 1) != 'b')) 
-    if (! ((int)*(mode + 1) != '+')) {
-      __retres = (_Bool)0;
-      goto return_label;
-    }
-  if (! *(mode + 2)) {
-    __retres = (_Bool)1;
-    goto return_label;
-  }
-  if ((int)*(mode + 2) == (int)*(mode + 1)) {
-    __retres = (_Bool)0;
-    goto return_label;
-  }
-  else 
-    if (! ((int)*(mode + 2) != 'b')) 
-      if (! ((int)*(mode + 2) != '+')) {
-        __retres = (_Bool)0;
-        goto return_label;
-      }
-  __retres = (_Bool)(! *(mode + 3));
-  return_label: return __retres;
-}
-
-/*@ assigns *(*lineptr + (0 .. *n - 1)), *n, *stream, \result;
-    assigns *(*lineptr + (0 .. *n - 1)) \from *stream;
-    assigns *n \from *stream;
-    assigns *stream \from *stream;
-    assigns \result \from *stream;
- */
-ssize_t getline(char **lineptr, size_t *n, FILE *stream)
-{
-  ssize_t __retres;
-  int tmp;
-  if (! lineptr) goto _LOR;
-  else 
-    if (! n) goto _LOR;
-    else 
-      if (! stream) {
-        _LOR: {
-                __fc_errno = 22;
-                __retres = -1;
-                goto return_label;
-              }
-      }
-  tmp = ferror(stream);
-  if (tmp) goto _LOR_0;
-  else {
-    int tmp_0;
-    tmp_0 = feof(stream);
-    if (tmp_0) {
-      _LOR_0: {
-                __retres = -1;
-                goto return_label;
-              }
-    }
-  }
-  if (! *lineptr) goto _LOR_1;
-  else 
-    if (*n == (size_t)0) {
-      _LOR_1:
-      {
-        *lineptr = (char *)malloc((size_t)2);
-        if (! *lineptr) {
-          __fc_errno = 12;
-          __retres = -1;
-          goto return_label;
-        }
-        *n = (size_t)2;
-      }
-    }
-  size_t cur = (size_t)0;
-  while (1) {
-    int tmp_3;
-    tmp_3 = ferror(stream);
-    if (tmp_3) break;
-    else {
-      int tmp_4;
-      tmp_4 = feof(stream);
-      if (tmp_4) break;
-    }
-    {
-      while (cur < *n - (size_t)1) {
-        int tmp_1;
-        tmp_1 = fgetc(stream);
-        char c = (char)tmp_1;
-        if ((int)c == -1) 
-          if (cur == (size_t)0) {
-            __retres = -1;
-            goto return_label;
-          }
-        if ((int)c != -1) {
-          size_t tmp_2;
-          tmp_2 = cur;
-          cur ++;
-          *(*lineptr + tmp_2) = c;
-        }
-        if ((int)c == '\n') goto _LOR_2;
-        else 
-          if ((int)c == -1) {
-            _LOR_2:
-            {
-              *(*lineptr + cur) = (char)'\000';
-              __retres = (ssize_t)cur;
-              goto return_label;
-            }
-          }
-      }
-      if (*n == (size_t)2147483647) {
-        __fc_errno = 75;
-        __retres = -1;
-        goto return_label;
-      }
-      size_t new_size = *n + (size_t)1;
-      *lineptr = (char *)realloc((void *)*lineptr,new_size);
-      if (! *lineptr) {
-        __fc_errno = 12;
-        __retres = -1;
-        goto return_label;
-      }
-      *n = new_size;
-    }
-  }
-  __retres = -1;
-  return_label: return __retres;
-}
-
-/*@ requires valid_strp: \valid(strp);
-    requires valid_fmt: valid_read_string(fmt);
-    ensures result_error_or_written_bytes: \result ≡ -1 ∨ \result ≥ 0;
-    assigns __fc_heap_status, \result, *strp;
-    assigns __fc_heap_status
-      \from (indirect: *(fmt + (0 ..))), (indirect: ap), __fc_heap_status;
-    assigns \result
-      \from (indirect: *(fmt + (0 ..))), (indirect: __fc_heap_status);
-    assigns *strp \from *(fmt + (0 ..)), ap, (indirect: __fc_heap_status);
-    allocates *\old(strp);
- */
-int vasprintf(char **strp, char const *fmt, va_list ap)
-{
-  int __retres;
-  int tmp;
-  tmp = Frama_C_interval(1,256);
-  size_t len = (size_t)tmp;
-  *strp = (char *)malloc(len);
-  if (! *strp) {
-    __retres = -1;
-    goto return_label;
-  }
-  Frama_C_make_unknown(*strp,len - 1U);
-  *(*strp + (len - 1U)) = (char)0;
-  __retres = (int)len;
-  return_label: return __retres;
-}
-
-/*@ requires valid_strp: \valid(strp);
-    requires valid_fmt: valid_read_string(fmt);
-    ensures result_error_or_written_bytes: \result ≡ -1 ∨ \result ≥ 0;
-    assigns __fc_heap_status, \result, *strp;
-    assigns __fc_heap_status
-      \from (indirect: *(fmt + (0 ..))), __fc_heap_status;
-    assigns \result
-      \from (indirect: *(fmt + (0 ..))), (indirect: __fc_heap_status);
-    assigns *strp \from *(fmt + (0 ..)), (indirect: __fc_heap_status);
-    allocates *\old(strp);
- */
-int asprintf(char **strp, char const *fmt, void * const *__va_params)
-{
-  va_list args;
-  args = __va_params;
-  int res = vasprintf(strp,fmt,args);
-  return res;
-}
-
-/*@ requires valid_stream: \valid(stream);
-    requires room_s: \valid(s + (0 .. size - 1));
-    ensures result_null_or_same: \result ≡ \null ∨ \result ≡ \old(s);
-    ensures
-      initialization: at_least_one:
-        \result ≢ \null ⇒ \initialized(\old(s) + 0);
-    ensures
-      terminated_string_on_success:
-        \result ≢ \null ⇒ valid_string(\old(s));
-    assigns *(s + (0 .. size - 1)), \result;
-    assigns *(s + (0 .. size - 1))
-      \from (indirect: size), (indirect: *stream);
-    assigns \result \from s, (indirect: size), (indirect: *stream);
- */
-char *fgets(char * restrict s, int size, FILE * restrict stream)
-{
-  char *__retres;
-  int tmp_0;
-  tmp_0 = Frama_C_interval(0,1);
-  if (tmp_0) {
-    int tmp;
-    int possible_errors[7] = {11, 9, 4, 5, 75, 12, 6};
-    tmp = Frama_C_interval(0,
-                           (int)(sizeof(possible_errors) / sizeof(int) - (unsigned int)1));
-    __fc_errno = possible_errors[tmp];
-    __retres = (char *)0;
-    goto return_label;
-  }
-  int i = 0;
-  while (i < size - 1) {
-    {
-      int tmp_1;
-      int tmp_2;
-      tmp_1 = Frama_C_interval(0,1);
-      if (tmp_1) {
-        *(s + i) = (char)0;
-        __retres = s;
-        goto return_label;
-      }
-      tmp_2 = Frama_C_interval(-127 - 1,127);
-      char c = (char)tmp_2;
-      *(s + i) = c;
-      if ((int)c == '\n') {
-        *(s + (i + 1)) = (char)0;
-        __retres = s;
-        goto return_label;
-      }
-    }
-    i ++;
-  }
-  *(s + i) = (char)0;
-  __retres = s;
-  return_label: return __retres;
-}
-
-/*@ requires valid_stream: \valid(stream);
-    ensures result_uchar_or_eof: (0 ≤ \result ≤ 255U) ∨ \result ≡ -1;
-    assigns *stream, \result;
-    assigns *stream \from *stream;
-    assigns \result \from (indirect: *stream);
- */
-int fgetc(FILE * restrict stream)
-{
-  int __retres;
-  int tmp_0;
-  int tmp_2;
-  tmp_0 = Frama_C_interval(0,1);
-  if (tmp_0) {
-    int tmp;
-    int possible_errors[7] = {11, 9, 4, 5, 75, 12, 6};
-    tmp = Frama_C_interval(0,
-                           (int)(sizeof(possible_errors) / sizeof(int) - (unsigned int)1));
-    __fc_errno = possible_errors[tmp];
-    __retres = -1;
-    goto return_label;
-  }
-  tmp_2 = Frama_C_interval(0,1);
-  if (tmp_2) {
-    __retres = -1;
-    goto return_label;
-  }
-  else {
-    unsigned char tmp_1;
-    tmp_1 = Frama_C_unsigned_char_interval((unsigned char)0,
-                                           (unsigned char)255U);
-    __retres = (int)tmp_1;
-    goto return_label;
-  }
-  return_label: return __retres;
-}
-
-/*@ assigns \result, *__fc_stdin;
-    assigns \result \from *__fc_stdin;
-    assigns *__fc_stdin \from *__fc_stdin;
- */
-int getchar(void)
-{
-  int tmp;
-  tmp = fgetc(__fc_stdin);
-  return tmp;
-}
-
-/*@ requires
-      valid_or_null_buff:
-        buf ≡ \null ∨ \valid((char *)buf + (0 .. size - 1));
-    requires valid_mode: valid_read_string(mode);
-    ensures
-      result_error_or_valid:
-        \result ≡ \null ∨ \result ∈ &__fc_fopen[0 .. 16 - 1];
-    ensures
-      errno_set:
-        __fc_errno ≡ \old(__fc_errno) ∨ __fc_errno ∈ {22, 24, 12};
-    assigns __fc_errno, \result;
-    assigns __fc_errno
-      \from (indirect: buf), (indirect: size),
-            (indirect: *(mode + (0 .. strlen{Old}(mode))));
-    assigns \result
-      \from __fc_p_fopen, (indirect: buf), (indirect: size),
-            (indirect: *(mode + (0 .. strlen{Old}(mode))));
-    allocates \old(buf);
- */
-FILE *fmemopen(void * restrict buf, size_t size, char const * restrict mode)
-{
-  FILE *__retres;
-  _Bool tmp;
-  int tmp_1;
-  int tmp_2;
-  tmp = is_valid_mode(mode);
-  if (! tmp) {
-    __fc_errno = 22;
-    __retres = (FILE *)0;
-    goto return_label;
-  }
-  if (! buf) {
-    if (size == (size_t)0) {
-      int tmp_0;
-      tmp_0 = Frama_C_interval(0,1);
-      if (tmp_0) {
-        __fc_errno = 22;
-        __retres = (FILE *)0;
-        goto return_label;
-      }
-    }
-    if ((int)*(mode + 1) != '+') 
-      if (*(mode + 1)) 
-        if ((int)*(mode + 2) != '+') {
-          __fc_errno = 22;
-          __retres = (FILE *)0;
-          goto return_label;
-        }
-    buf = malloc(size);
-    if (! buf) {
-      __fc_errno = 12;
-      __retres = (FILE *)0;
-      goto return_label;
-    }
-  }
-  tmp_1 = Frama_C_interval(0,1);
-  if (tmp_1) {
-    __fc_errno = 24;
-    __retres = (FILE *)0;
-    goto return_label;
-  }
-  tmp_2 = Frama_C_interval(0,16 - 1);
-  __retres = & __fc_fopen[tmp_2];
-  return_label: return __retres;
-}
-
-/*@ assigns *stream;
-    assigns *stream \from *(format + (..)), *stream; */
-int vfscanf(FILE * restrict stream, char const * restrict format, va_list arg)
-{
-  int __retres;
-  char const *p = format;
-  char conversion_counter = (char)0;
-  while (*p) {
-    if ((int)*p == '%') {
-      enum length_modifier lm = NONE;
-      char asterisks = (char)0;
-      p ++;
-      if ((int)*p == '%') break;
-      while (1) {
-        switch ((int)*p) {
-          case '-': case '+': case ' ': case '#': case '0': break;
-          default: goto post_flags;
-        }
-        p ++;
-      }
-      post_flags:
-      while (1) {
-        if ((int)*p >= '0') {
-          if (! ((int)*p <= '9')) break;
-        }
-        else break;
-        p ++;
-      }
-      if ((int)*p == '*') {
-        asterisks = (char)((int)asterisks + 1);
-        p ++;
-      }
-      if ((int)*p == '.') {
-        p ++;
-        while (1) {
-          if ((int)*p >= '0') {
-            if (! ((int)*p <= '9')) break;
-          }
-          else break;
-          p ++;
-        }
-        if ((int)*p == '*') {
-          asterisks = (char)((int)asterisks + 1);
-          p ++;
-        }
-      }
-      switch ((int)*p) {
-        case 'h': p ++;
-        if ((int)*p == 'h') {
-          p ++;
-          lm = HH;
-        }
-        else lm = H;
-        break;
-        case 'l': p ++;
-        if ((int)*p == 'l') {
-          p ++;
-          lm = LL;
-        }
-        else lm = L;
-        break;
-        case 'j': p ++;
-        lm = J;
-        break;
-        case 'z': p ++;
-        lm = Z;
-        break;
-        case 't': p ++;
-        lm = T;
-        break;
-        case 'L': p ++;
-        lm = UPPER_L;
-        break;
-      }
-      while (asterisks) {
-        int tmp;
-        tmp = *((int *)*arg);
-        arg ++;
-        int ignored = tmp;
-        int tmp_2 = ignored;
-        asterisks = (char)((int)asterisks - 1);
-      }
-      switch ((int)*p) {
-        case 'd': case 'i': ;
-        switch (lm) {
-          int *tmp_0;
-          char *tmp_1;
-          short *tmp_2_0;
-          long *tmp_3;
-          long long *tmp_4;
-          intmax_t *tmp_5;
-          size_t *tmp_6;
-          ptrdiff_t *tmp_7;
-          case NONE:
-          { /* sequence */
-            tmp_0 = *((int **)*arg);
-            arg ++;
-            *tmp_0 = Frama_C_interval(-2147483647 - 1,2147483647);
-          }
-          break;
-          case HH:
-          { /* sequence */
-            tmp_1 = *((char **)*arg);
-            arg ++;
-            *tmp_1 = Frama_C_char_interval((char)(-127 - 1),(char)127);
-          }
-          break;
-          case H:
-          { /* sequence */
-            tmp_2_0 = *((short **)*arg);
-            arg ++;
-            *tmp_2_0 = Frama_C_short_interval((short)(-32767 - 1),
-                                              (short)32767);
-          }
-          break;
-          case L:
-          { /* sequence */
-            tmp_3 = *((long **)*arg);
-            arg ++;
-            *tmp_3 = Frama_C_long_interval(-2147483647L - 1L,2147483647L);
-          }
-          break;
-          case LL: case UPPER_L:
-          { /* sequence */
-            tmp_4 = *((long long **)*arg);
-            arg ++;
-            *tmp_4 = Frama_C_long_long_interval(-9223372036854775807LL - 1LL,
-                                                9223372036854775807LL);
-          }
-          break;
-          case J:
-          { /* sequence */
-            tmp_5 = *((intmax_t **)*arg);
-            arg ++;
-            *tmp_5 = Frama_C_intmax_t_interval(-9223372036854775807LL - 1LL,
-                                               9223372036854775807LL);
-          }
-          break;
-          case Z:
-          { /* sequence */
-            tmp_6 = *((size_t **)*arg);
-            arg ++;
-            *tmp_6 = Frama_C_size_t_interval((size_t)0,4294967295U);
-          }
-          break;
-          case T:
-          { /* sequence */
-            tmp_7 = *((ptrdiff_t **)*arg);
-            arg ++;
-            *tmp_7 = Frama_C_ptrdiff_t_interval(-2147483647 - 1,2147483647);
-          }
-          break;
-        }
-        break;
-        case 'o': case 'u': case 'x': case 'X': ;
-        switch (lm) {
-          unsigned int *tmp_8;
-          unsigned char *tmp_9;
-          unsigned short *tmp_10;
-          unsigned long *tmp_11;
-          unsigned long long *tmp_12;
-          uintmax_t *tmp_13;
-          size_t *tmp_14;
-          ptrdiff_t *tmp_15;
-          case NONE:
-          { /* sequence */
-            tmp_8 = *((unsigned int **)*arg);
-            arg ++;
-            *tmp_8 = Frama_C_unsigned_int_interval((unsigned int)0,
-                                                   4294967295U);
-          }
-          break;
-          case HH:
-          { /* sequence */
-            tmp_9 = *((unsigned char **)*arg);
-            arg ++;
-            *tmp_9 = Frama_C_unsigned_char_interval((unsigned char)0,
-                                                    (unsigned char)255U);
-          }
-          break;
-          case H:
-          { /* sequence */
-            tmp_10 = *((unsigned short **)*arg);
-            arg ++;
-            *tmp_10 = Frama_C_unsigned_short_interval((unsigned short)0,
-                                                      (unsigned short)65535U);
-          }
-          break;
-          case L:
-          { /* sequence */
-            tmp_11 = *((unsigned long **)*arg);
-            arg ++;
-            *tmp_11 = Frama_C_unsigned_long_interval((unsigned long)0,
-                                                     4294967295UL);
-          }
-          break;
-          case LL: case UPPER_L:
-          { /* sequence */
-            tmp_12 = *((unsigned long long **)*arg);
-            arg ++;
-            *tmp_12 = Frama_C_unsigned_long_long_interval((unsigned long long)0,
-                                                          18446744073709551615ULL);
-          }
-          break;
-          case J:
-          { /* sequence */
-            tmp_13 = *((uintmax_t **)*arg);
-            arg ++;
-            *tmp_13 = Frama_C_uintmax_t_interval((uintmax_t)0,
-                                                 18446744073709551615ULL);
-          }
-          break;
-          case Z:
-          { /* sequence */
-            tmp_14 = *((size_t **)*arg);
-            arg ++;
-            *tmp_14 = Frama_C_size_t_interval((size_t)0,4294967295U);
-          }
-          break;
-          case T:
-          { /* sequence */
-            tmp_15 = *((ptrdiff_t **)*arg);
-            arg ++;
-            *tmp_15 = Frama_C_ptrdiff_t_interval(-2147483647 - 1,2147483647);
-          }
-          break;
-        }
-        break;
-        case 'f': case 'F': case 'e': case 'E': case 'g': case 'G': case 'a':
-        case 'A':
-        ;
-        switch (lm) {
-          double *tmp_16;
-          case NONE: case L:
-          { /* sequence */
-            tmp_16 = *((double **)*arg);
-            arg ++;
-            *tmp_16 = Frama_C_double_interval(- 0x1.fffffffffffffp+1023,
-                                              0x1.fffffffffffffp+1023);
-          }
-          break;
-          case UPPER_L:
-          {
-            long double *tmp_17;
-            long double volatile vld = (long double)0.0;
-            tmp_17 = *((long double **)*arg);
-            arg ++;
-            *tmp_17 = vld;
-          }
-          break;
-          default: /*@ assert invalid_scanf_specifier: \false; */ ;
-        }
-        break;
-        case 'c': ;
-        switch (lm) {
-          char *tmp_18;
-          wint_t *tmp_19;
-          case NONE:
-          { /* sequence */
-            tmp_18 = *((char **)*arg);
-            arg ++;
-            *tmp_18 = Frama_C_char_interval((char)(-127 - 1),(char)127);
-          }
-          break;
-          case L:
-          { /* sequence */
-            tmp_19 = *((wint_t **)*arg);
-            arg ++;
-            *tmp_19 = Frama_C_wint_t_interval((wint_t)0,4294967295U);
-          }
-          default: /*@ assert invalid_scanf_specifier: \false; */ ;
-        }
-        break;
-        case 's': ;
-        switch (lm) {
-          size_t tmp_20;
-          char *tmp_21;
-          size_t tmp_22;
-          wchar_t *tmp_23;
-          case NONE:
-          { /* sequence */
-            tmp_20 = Frama_C_size_t_interval((size_t)0,4294967295U);
-            tmp_21 = *((char **)*arg);
-            arg ++;
-          }
-          Frama_C_make_unknown(tmp_21,tmp_20);
-          break;
-          case L:
-          { /* sequence */
-            tmp_22 = Frama_C_size_t_interval((size_t)0,
-                                             4294967295U / sizeof(wchar_t));
-            tmp_23 = *((wchar_t **)*arg);
-            arg ++;
-          }
-          Frama_C_make_unknown_wchar(tmp_23,tmp_22);
-          default: /*@ assert invalid_scanf_specifier: \false; */ ;
-        }
-        break;
-        case 'n': ;
-        switch (lm) {
-          int *tmp_24;
-          char *tmp_25;
-          short *tmp_26;
-          long *tmp_27;
-          long long *tmp_28;
-          intmax_t *tmp_29;
-          size_t *tmp_30;
-          ptrdiff_t *tmp_31;
-          case NONE:
-          { /* sequence */
-            tmp_24 = *((int **)*arg);
-            arg ++;
-            *tmp_24 = (int)conversion_counter;
-          }
-          break;
-          case HH:
-          { /* sequence */
-            tmp_25 = *((char **)*arg);
-            arg ++;
-            *tmp_25 = conversion_counter;
-          }
-          break;
-          case H:
-          { /* sequence */
-            tmp_26 = *((short **)*arg);
-            arg ++;
-            *tmp_26 = (short)conversion_counter;
-          }
-          break;
-          case L:
-          { /* sequence */
-            tmp_27 = *((long **)*arg);
-            arg ++;
-            *tmp_27 = (long)conversion_counter;
-          }
-          break;
-          case LL: case UPPER_L:
-          { /* sequence */
-            tmp_28 = *((long long **)*arg);
-            arg ++;
-            *tmp_28 = (long long)conversion_counter;
-          }
-          break;
-          case J:
-          { /* sequence */
-            tmp_29 = *((intmax_t **)*arg);
-            arg ++;
-            *tmp_29 = (intmax_t)conversion_counter;
-          }
-          break;
-          case Z:
-          { /* sequence */
-            tmp_30 = *((size_t **)*arg);
-            arg ++;
-            *tmp_30 = (size_t)conversion_counter;
-          }
-          break;
-          case T:
-          { /* sequence */
-            tmp_31 = *((ptrdiff_t **)*arg);
-            arg ++;
-            *tmp_31 = (ptrdiff_t)conversion_counter;
-          }
-          break;
-        }
-        break;
-      }
-      conversion_counter = (char)((int)conversion_counter + 1);
-    }
-    p ++;
-  }
-  __retres = (int)conversion_counter;
-  return __retres;
-}
-
-/*@ assigns *__fc_stdin;
-    assigns *__fc_stdin \from *(format + (..)); */
-int vscanf(char const * restrict format, va_list arg)
-{
-  int tmp;
-  tmp = vfscanf(__fc_stdin,format,arg);
-  return tmp;
-}
-
-/*@ requires abs_representable: i > -2147483647 - 1;
-    assigns \result;
-    assigns \result \from i;
-    
-    behavior negative:
-      assumes negative: i < 0;
-      ensures opposite_result: \result ≡ -\old(i);
-    
-    behavior nonnegative:
-      assumes nonnegative: i ≥ 0;
-      ensures same_result: \result ≡ \old(i);
-    
-    complete behaviors nonnegative, negative;
-    disjoint behaviors nonnegative, negative;
- */
-int abs(int i)
-{
-  int __retres;
-  if (i < 0) {
-    __retres = - i;
-    goto return_label;
-  }
-  __retres = i;
-  return_label: return __retres;
-}
-
-/*@ requires valid_nptr: valid_read_string(p);
-    assigns \result;
-    assigns \result
-      \from (indirect: p), (indirect: *(p + (0 .. strlen{Old}(p))));
- */
-int atoi(char const *p)
-{
-  int __retres;
-  int n;
-  int c;
-  int tmp_1;
-  int tmp_3;
-  int neg = 0;
-  unsigned char *up = (unsigned char *)p;
-  c = (int)*up;
-  tmp_1 = isdigit(c);
-  if (! tmp_1) {
-    int tmp_0;
-    while (1) {
-      int tmp;
-      tmp = isspace(c);
-      if (! tmp) break;
-      up ++;
-      c = (int)*up;
-    }
-    switch (c) {
-      case '-': neg ++;
-      case '+': { /* sequence */
-                  up ++;
-                  c = (int)*up;
-                }
-    }
-    tmp_0 = isdigit(c);
-    if (! tmp_0) {
-      __retres = 0;
-      goto return_label;
-    }
-  }
-  n = '0' - c;
-  while (1) {
-    int tmp_2;
-    up ++;
-    c = (int)*up;
-    tmp_2 = isdigit(c);
-    if (! tmp_2) break;
-    n *= 10;
-    n += '0' - c;
-  }
-  if (neg) tmp_3 = n; else tmp_3 = - n;
-  __retres = tmp_3;
-  return_label: return __retres;
-}
-
-/*@ assigns __fc_heap_status, \result;
-    assigns __fc_heap_status
-      \from (indirect: nmemb), (indirect: size), __fc_heap_status;
-    assigns \result
-      \from (indirect: nmemb), (indirect: size), (indirect: __fc_heap_status);
-    allocates \result;
-    
-    behavior allocation:
-      assumes can_allocate: is_allocable(nmemb * size);
-      ensures
-        allocation: \fresh{Old, Here}(\result,\old(nmemb) * \old(size));
-      ensures
-        initialization:
-          \initialized((char *)\result + (0 .. \old(nmemb) * \old(size) - 1));
-      ensures
-        zero_initialization:
-          \subset(*((char *)\result + (0 .. \old(nmemb) * \old(size) - 1)),
-                 {0});
-    
-    behavior no_allocation:
-      assumes cannot_allocate: ¬is_allocable(nmemb * size);
-      ensures null_result: \result ≡ \null;
-      assigns \result;
-      assigns \result \from \nothing;
-      allocates \nothing;
-    
-    complete behaviors no_allocation, allocation;
-    disjoint behaviors no_allocation, allocation;
- */
-void *calloc(size_t nmemb, size_t size)
-{
-  void *__retres;
-  size_t l = nmemb * size;
-  if (size != (size_t)0) 
-    if (l / size != nmemb) {
-      __retres = (void *)0;
-      goto return_label;
-    }
-  char *p = malloc(l);
-  if (p) memset((void *)p,0,l);
-  __retres = (void *)p;
-  return_label: return __retres;
-}
-
-static char __fc_env_strings[64];
-static char __fc_initenv_init;
-/*@ assigns __fc_env_strings[0 .. 64 - 1], __fc_env[0 .. 4096 - 1];
-    assigns __fc_env_strings[0 .. 64 - 1] \from Frama_C_entropy_source;
-    assigns __fc_env[0 .. 4096 - 1] \from Frama_C_entropy_source;
- */
-static void __fc_initenv(void)
-{
-  if (! __fc_initenv_init) {
-    Frama_C_make_unknown(__fc_env_strings,(size_t)(64 - 1));
-    {
-      int i = 0;
-      while (i < 4096) {
-        {
-          int tmp;
-          tmp = Frama_C_interval(0,64 - 1);
-          __fc_env[i] = & __fc_env_strings[tmp];
-        }
-        i ++;
-      }
-    }
-    __fc_initenv_init = (char)1;
-  }
-  return;
-}
-
-/*@ requires valid_name: valid_read_string(name);
-    ensures
-      null_or_valid_result:
-        \result ≡ \null ∨
-        (\valid(\result) ∧ valid_read_string(\result));
-    assigns \result;
-    assigns \result
-      \from __fc_env[0 ..], (indirect: name),
-            (indirect: *(name + (0 .. strlen{Old}(name))));
- */
-char *getenv(char const *name)
-{
-  char *__retres;
-  int tmp_0;
-  /*@ assert ¬(strchr(name, '=') ≡ \true); */ ;
-  __fc_initenv();
-  tmp_0 = Frama_C_nondet(0,1);
-  if (tmp_0) {
-    int tmp;
-    tmp = Frama_C_interval(0,4096 - 1);
-    ;
-    __retres = __fc_env[tmp];
-    goto return_label;
-  }
-  else {
-    __retres = (char *)0;
-    goto return_label;
-  }
-  return_label: return __retres;
-}
-
-/*@ requires valid_string: valid_read_string(string);
-    assigns __fc_env[0 ..], \result;
-    assigns __fc_env[0 ..] \from __fc_env[0 ..], string;
-    assigns \result \from (indirect: __fc_env[0 ..]), (indirect: string);
- */
-int putenv(char *string)
-{
-  int __retres;
-  int tmp_3;
-  char *separator __attribute__((__unused__)) =
-    strchr((char const *)string,'=');
-  /*@ assert string_contains_separator: separator ≢ \null; */ ;
-  /*@ assert name_is_not_empty: separator ≢ string; */ ;
-  __fc_initenv();
-  tmp_3 = Frama_C_nondet(0,1);
-  if (tmp_3) {
-    int tmp_1;
-    int tmp_2;
-    tmp_1 = Frama_C_nondet(0,1);
-    if (tmp_1) {
-      int tmp_0;
-      __fc_errno = 12;
-      tmp_0 = Frama_C_interval(-2147483647 - 1,2147483647);
-      __retres = tmp_0;
-      goto return_label;
-    }
-    tmp_2 = Frama_C_interval(0,4096 - 1);
-    __fc_env[tmp_2] = string;
-  }
-  __retres = 0;
-  return_label: return __retres;
-}
-
-/*@ requires valid_name: valid_read_string(name);
-    requires valid_value: valid_read_string(value);
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result, __fc_env[0 ..], __fc_errno, *(__fc_env[0 ..] + (0 ..));
-    assigns \result
-      \from __fc_env[0 ..], (indirect: *(name + (0 .. strlen{Old}(name)))),
-            (indirect: *(value + (0 .. strlen{Old}(value)))),
-            (indirect: overwrite);
-    assigns __fc_env[0 ..]
-      \from __fc_env[0 ..], (indirect: *(name + (0 .. strlen{Old}(name)))),
-            (indirect: *(value + (0 .. strlen{Old}(value)))),
-            (indirect: overwrite);
-    assigns __fc_errno
-      \from __fc_env[0 ..], (indirect: *(name + (0 .. strlen{Old}(name)))),
-            (indirect: *(value + (0 .. strlen{Old}(value)))),
-            (indirect: overwrite);
-    assigns *(__fc_env[0 ..] + (0 ..))
-      \from *(name + (0 .. strlen{Old}(name))),
-            *(value + (0 .. strlen{Old}(value))), (indirect: __fc_env[0 ..]),
-            (indirect: overwrite);
-    allocates __fc_env[0 ..];
-    
-    behavior invalid_name:
-      assumes
-        name_empty_or_with_equals_sign:
-          strlen(name) ≡ 0 ∨ strchr(name, '=') ≡ \true;
-      ensures error: \result ≡ -1;
-      ensures errno_set: __fc_errno ≡ 22;
-      assigns \result, __fc_errno;
-      assigns \result \from (indirect: *(name + (0 .. strlen{Old}(name))));
-      assigns __fc_errno
-        \from (indirect: *(name + (0 .. strlen{Old}(name))));
-      allocates \nothing;
-    
-    behavior out_of_memory:
-      assumes
-        not_enough_memory: ¬is_allocable((strlen(name) + strlen(value)) + 2);
-      ensures error: \result ≡ -1;
-      ensures errno_set: __fc_errno ≡ 12;
-      assigns \result, __fc_errno;
-      assigns \result
-        \from (indirect: *(name + (0 .. strlen{Old}(name)))),
-              (indirect: *(value + (0 .. strlen{Old}(value)))),
-              (indirect: overwrite);
-      assigns __fc_errno
-        \from (indirect: *(name + (0 .. strlen{Old}(name)))),
-              (indirect: *(value + (0 .. strlen{Old}(value)))),
-              (indirect: overwrite);
-      allocates \nothing;
-    
-    behavior ok:
-      assumes name_not_empty: strlen(name) > 0;
-      assumes name_has_no_equals_sign: ¬(strchr(name, '=') ≡ \true);
-      assumes
-        enough_memory: is_allocable((strlen(name) + strlen(value)) + 2);
-      ensures ok: \result ≡ 0;
-      assigns \result, __fc_env[0 ..], *(__fc_env[0 ..] + (0 ..));
-      assigns \result
-        \from __fc_env[0 ..], (indirect: *(name + (0 .. strlen{Old}(name)))),
-              (indirect: *(value + (0 .. strlen{Old}(value)))),
-              (indirect: overwrite);
-      assigns __fc_env[0 ..]
-        \from __fc_env[0 ..], (indirect: *(name + (0 .. strlen{Old}(name)))),
-              (indirect: *(value + (0 .. strlen{Old}(value)))),
-              (indirect: overwrite);
-      assigns *(__fc_env[0 ..] + (0 ..))
-        \from *(name + (0 .. strlen{Old}(name))),
-              *(value + (0 .. strlen{Old}(value))),
-              (indirect: __fc_env[0 ..]), (indirect: overwrite);
-      allocates __fc_env[0 ..];
- */
-int setenv(char const *name, char const *value, int overwrite)
-{
-  int __retres;
-  char *tmp;
-  int tmp_4;
-  tmp = strchr(name,'=');
-  if (tmp) {
-    __fc_errno = 22;
-    __retres = -1;
-    goto return_label;
-  }
-  size_t namelen = strlen(name);
-  if (namelen == (size_t)0) {
-    __fc_errno = 22;
-    __retres = -1;
-    goto return_label;
-  }
-  __fc_initenv();
-  tmp_4 = Frama_C_nondet(0,1);
-  if (tmp_4) {
-    __fc_errno = 12;
-    __retres = -1;
-    goto return_label;
-  }
-  else {
-    int tmp_1;
-    int tmp_2;
-    int tmp_3;
-    tmp_1 = Frama_C_nondet(0,1);
-    if (tmp_1) Frama_C_make_unknown(__fc_env_strings,(size_t)(64 - 1));
-    tmp_2 = Frama_C_interval(0,4096 - 1);
-    tmp_3 = Frama_C_interval(0,64 - 1);
-    __fc_env[tmp_2] = & __fc_env_strings[tmp_3];
-    __retres = 0;
-    goto return_label;
-  }
-  return_label: return __retres;
-}
-
-/*@ requires valid_name: valid_read_string(name);
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result, __fc_env[0 ..];
-    assigns \result
-      \from __fc_env[0 ..], (indirect: name),
-            (indirect: *(name + (0 .. strlen{Old}(name))));
-    assigns __fc_env[0 ..]
-      \from __fc_env[0 ..], (indirect: name),
-            (indirect: *(name + (0 .. strlen{Old}(name))));
- */
-int unsetenv(char const *name)
-{
-  int __retres;
-  char *tmp;
-  int tmp_2;
-  tmp = strchr(name,'=');
-  if (tmp) {
-    __fc_errno = 22;
-    __retres = -1;
-    goto return_label;
-  }
-  size_t namelen = strlen(name);
-  if (namelen == (size_t)0) {
-    __fc_errno = 22;
-    __retres = -1;
-    goto return_label;
-  }
-  __fc_initenv();
-  tmp_2 = Frama_C_nondet(0,1);
-  if (tmp_2) {
-    int tmp_1;
-    tmp_1 = Frama_C_interval(0,4096 - 1);
-    __fc_env[tmp_1] = (char *)0;
-  }
-  __retres = 0;
-  return_label: return __retres;
-}
-
-/*@ requires valid_memptr: \valid(memptr);
-    requires
-      alignment_is_a_suitable_power_of_two:
-        alignment ≥ sizeof(void *) ∧
-        ((size_t)alignment & (size_t)alignment - 1) ≡ 0;
-    assigns __fc_heap_status, \result;
-    assigns __fc_heap_status
-      \from (indirect: alignment), size, __fc_heap_status;
-    assigns \result
-      \from (indirect: alignment), (indirect: size),
-            (indirect: __fc_heap_status);
-    allocates *\old(memptr);
-    
-    behavior allocation:
-      assumes can_allocate: is_allocable(size);
-      ensures allocation: \fresh{Old, Here}(*\old(memptr),\old(size));
-      ensures result_zero: \result ≡ 0;
-      assigns __fc_heap_status, \result;
-      assigns __fc_heap_status
-        \from (indirect: alignment), size, __fc_heap_status;
-      assigns \result
-        \from (indirect: alignment), (indirect: size),
-              (indirect: __fc_heap_status);
-    
-    behavior no_allocation:
-      assumes cannot_allocate: ¬is_allocable(size);
-      ensures result_non_zero: \result < 0 ∨ \result > 0;
-      assigns \result;
-      assigns \result \from (indirect: alignment);
-      allocates \nothing;
-    
-    complete behaviors no_allocation, allocation;
-    disjoint behaviors no_allocation, allocation;
- */
-int posix_memalign(void **memptr, size_t alignment, size_t size)
-{
-  int __retres;
-  /*@
-  assert
-  alignment_is_a_suitable_power_of_two:
-    alignment ≥ sizeof(void *) ∧
-    ((size_t)alignment & (size_t)alignment - 1) ≡ 0;
-   */
-  ;
-  *memptr = malloc(size);
-  if (! *memptr) {
-    __retres = 12;
-    goto return_label;
-  }
-  __retres = 0;
-  return_label: return __retres;
-}
-
-/*@ requires
-      valid_file_name_or_null:
-        file_name ≡ \null ∨ valid_read_string(file_name);
-    requires
-      resolved_name_null_or_allocated:
-        resolved_name ≡ \null ∨ \valid(resolved_name + (0 .. 4096 - 1));
-    assigns __fc_heap_status, *(\result + (0 .. 4096 - 1)),
-            *(resolved_name + (0 .. 4096 - 1)), __fc_errno;
-    assigns __fc_heap_status
-      \from (indirect: resolved_name), __fc_heap_status;
-    assigns *(\result + (0 .. 4096 - 1))
-      \from (indirect: __fc_heap_status), (indirect: resolved_name),
-            (indirect: *(file_name + (0 ..)));
-    assigns *(resolved_name + (0 .. 4096 - 1))
-      \from (indirect: __fc_heap_status), (indirect: resolved_name),
-            (indirect: *(file_name + (0 ..)));
-    assigns __fc_errno
-      \from (indirect: file_name), (indirect: *(file_name + (0 ..))),
-            (indirect: resolved_name), (indirect: __fc_heap_status);
-    
-    behavior null_file_name:
-      assumes null_file_name: file_name ≡ \null;
-      ensures null_result: \result ≡ \null;
-      ensures errno_set: __fc_errno ≡ 22;
-      assigns \result, __fc_errno;
-      assigns \result \from (indirect: file_name);
-      assigns __fc_errno \from (indirect: file_name);
-    
-    behavior allocate_resolved_name:
-      assumes valid_file_name: valid_read_string(file_name);
-      assumes resolved_name_null: resolved_name ≡ \null;
-      assumes can_allocate: is_allocable(4096);
-      ensures allocation: \fresh{Old, Here}(\result,4096);
-      assigns __fc_heap_status, \result;
-      assigns __fc_heap_status \from __fc_heap_status;
-      assigns \result \from (indirect: __fc_heap_status);
-    
-    behavior not_enough_memory:
-      assumes valid_file_name: valid_read_string(file_name);
-      assumes resolved_name_null: resolved_name ≡ \null;
-      assumes cannot_allocate: ¬is_allocable(4096);
-      ensures null_result: \result ≡ \null;
-      ensures errno_set: __fc_errno ≡ 12;
-      assigns \result;
-      assigns \result \from \nothing;
-      allocates \nothing;
-    
-    behavior resolved_name_buffer:
-      assumes valid_file_name: valid_read_string(file_name);
-      assumes
-        allocated_resolved_name_or_fail:
-          \valid(resolved_name + (0 .. 4096 - 1));
-      ensures
-        valid_string_resolved_name:
-          valid_string(\old(resolved_name)) ∧
-          strlen(\old(resolved_name)) < 4096;
-      ensures resolved_result: \result ≡ \old(resolved_name);
-      assigns \result, *(resolved_name + (0 .. 4096 - 1));
-      assigns \result \from resolved_name;
-      assigns *(resolved_name + (0 .. 4096 - 1))
-        \from (indirect: *(file_name + (0 ..)));
-      allocates \nothing;
-    
-    behavior filesystem_error:
-      assumes valid_file_name: valid_read_string(file_name);
-      ensures null_result: \result ≡ \null;
-      ensures errno_set: __fc_errno ∈ {13, 5, 40, 36, 2, 20};
-      assigns \result, __fc_errno;
-      assigns \result \from (indirect: *(file_name + (0 ..)));
-      assigns __fc_errno \from (indirect: *(file_name + (0 ..)));
-      allocates \nothing;
- */
-char *realpath(char const * restrict file_name, char * restrict resolved_name)
-{
-  char *__retres;
-  int tmp;
-  if (! file_name) {
-    __fc_errno = 22;
-    __retres = (char *)0;
-    goto return_label;
-  }
-  tmp = Frama_C_interval(0,6);
-  switch (tmp) {
-    case 0: __fc_errno = 13;
-    __retres = (char *)0;
-    goto return_label;
-    case 1: __fc_errno = 5;
-    __retres = (char *)0;
-    goto return_label;
-    case 2: __fc_errno = 40;
-    __retres = (char *)0;
-    goto return_label;
-    case 3: __fc_errno = 36;
-    __retres = (char *)0;
-    goto return_label;
-    case 4: __fc_errno = 2;
-    __retres = (char *)0;
-    goto return_label;
-    case 5: __fc_errno = 20;
-    __retres = (char *)0;
-    goto return_label;
-    default: break;
-  }
-  int realpath_len = Frama_C_interval(1,4096);
-  if (! resolved_name) {
-    resolved_name = (char *)malloc((size_t)4096);
-    if (! resolved_name) {
-      __fc_errno = 12;
-      __retres = (char *)0;
-      goto return_label;
-    }
-  }
-  Frama_C_make_unknown(resolved_name,(size_t)realpath_len);
-  *(resolved_name + (realpath_len - 1)) = (char)'\000';
-  __retres = resolved_name;
-  return_label: return __retres;
-}
-
-/*@ assigns \result;
-    assigns \result \from *(path + (0 .. strlen{Old}(path)));
-    allocates \result;
- */
-char *canonicalize_file_name(char const *path)
-{
-  char *tmp;
-  tmp = realpath(path,(char *)0);
-  return tmp;
-}
-
-/*@ requires valid_dest: valid_or_empty(dest, n);
-    requires valid_src: valid_read_or_empty(src, n);
-    requires
-      separation:
-        \separated((char *)dest + (0 .. n - 1), (char *)src + (0 .. n - 1));
-    ensures
-      copied_contents:
-        memcmp{Post, Pre}((char *)\old(dest), (char *)\old(src), \old(n)) ≡
-        0;
-    ensures result_ptr: \result ≡ \old(dest);
-    assigns *((char *)dest + (0 .. n - 1)), \result;
-    assigns *((char *)dest + (0 .. n - 1))
-      \from *((char *)src + (0 .. n - 1));
-    assigns \result \from dest;
- */
-void *memcpy(void * restrict dest, void const * restrict src, size_t n)
-{
-  {
-    size_t i = (size_t)0;
-    /*@ loop invariant no_eva: 0 ≤ i ≤ n;
-        loop invariant
-          no_eva:
-            ∀ ℤ k;
-              0 ≤ k < i ⇒ *((char *)dest + k) ≡ *((char *)src + k);
-        loop assigns i, *((char *)dest + (0 .. n - 1));
-        loop variant n - i;
-    */
-    while (i < n) {
-      *((char *)dest + i) = *((char *)src + i);
-      i ++;
-    }
-  }
-  return dest;
-}
-
-/*@ requires valid_dest: valid_or_empty(dest, n);
-    requires valid_src: valid_read_or_empty(src, n);
-    requires
-      separation:
-        \separated((char *)dest + (0 .. n - 1), (char *)src + (0 .. n - 1));
-    ensures
-      copied_contents:
-        memcmp{Post, Pre}((char *)\old(dest), (char *)\old(src), \old(n)) ≡
-        0;
-    ensures result_next_byte: \result ≡ \old(dest) + \old(n);
-    assigns *((char *)dest + (0 .. n - 1)), \result;
-    assigns *((char *)dest + (0 .. n - 1))
-      \from *((char *)src + (0 .. n - 1));
-    assigns \result \from dest, n;
- */
-void *mempcpy(void * restrict dest, void const * restrict src, size_t n)
-{
-  void *__retres;
-  size_t i;
-  i = (size_t)0;
-  /*@ loop invariant no_eva: 0 ≤ i ≤ n;
-      loop invariant
-        no_eva:
-          ∀ ℤ k;
-            0 ≤ k < i ⇒ *((char *)dest + k) ≡ *((char *)src + k);
-      loop assigns i, *((char *)dest + (0 .. n - 1));
-      loop variant n - i;
-  */
-  while (i < n) {
-    *((char *)dest + i) = *((char *)src + i);
-    i ++;
-  }
-  __retres = (void *)((char *)dest + i);
-  return __retres;
-}
-
-/*@ assigns \result;
-    assigns \result \from (indirect: p), (indirect: q), (indirect: n);
-    
-    behavior separated:
-      assumes
-        separation: no_overlap:
-          \separated(p + (0 .. n - 1), q + (0 .. n - 1));
-      ensures result_no_overlap: \result ≡ 0;
-    
-    behavior not_separated_lt:
-      assumes
-        separation: overlap: ¬\separated(p + (0 .. n - 1), q + (0 .. n - 1));
-      assumes p_before_q: p ≤ q < p + n;
-      ensures result_p_before_q: \result ≡ -1;
-    
-    behavior not_separated_gt:
-      assumes
-        separation: overlap: ¬\separated(p + (0 .. n - 1), q + (0 .. n - 1));
-      assumes p_after_q: q < p ≤ q + n;
-      ensures result_p_after_q: \result ≡ 1;
-    
-    complete behaviors not_separated_gt, not_separated_lt, separated;
-    disjoint behaviors not_separated_gt, not_separated_lt, separated;
- */
-static int memoverlap(char const *p, char const *q, size_t n)
-{
-  int __retres;
-  uintptr_t p1 = (uintptr_t)p;
-  uintptr_t p2 = (uintptr_t)(p + n);
-  uintptr_t q1 = (uintptr_t)q;
-  uintptr_t q2 = (uintptr_t)(q + n);
-  if (p1 <= q1) {
-    if (p2 > q1) {
-      __retres = -1;
-      goto return_label;
-    }
-    else goto _LAND;
-  }
-  else {
-    _LAND: ;
-    if (q1 <= p1) 
-      if (q2 > p1) {
-        __retres = 1;
-        goto return_label;
-      }
-      else {
-        __retres = 0;
-        goto return_label;
-      }
-    else {
-      __retres = 0;
-      goto return_label;
-    }
-  }
-  return_label: return __retres;
-}
-
-/*@ requires valid_dest: valid_or_empty(dest, n);
-    requires valid_src: valid_read_or_empty(src, n);
-    ensures
-      copied_contents:
-        memcmp{Post, Pre}((char *)\old(dest), (char *)\old(src), \old(n)) ≡
-        0;
-    ensures result_ptr: \result ≡ \old(dest);
-    assigns *((char *)dest + (0 .. n - 1)), \result;
-    assigns *((char *)dest + (0 .. n - 1))
-      \from *((char *)src + (0 .. n - 1));
-    assigns \result \from dest;
- */
-void *memmove(void *dest, void const *src, size_t n)
-{
-  void *__retres;
-  int tmp;
-  if (n == (size_t)0) {
-    __retres = dest;
-    goto return_label;
-  }
-  char *s = (char *)src;
-  char *d = (char *)dest;
-  tmp = memoverlap((char const *)dest,(char const *)src,n);
-  if (tmp <= 0) {
-    size_t i = (size_t)0;
-    /*@ loop invariant no_eva: 0 ≤ i ≤ n;
-        loop invariant
-          no_eva:
-            ∀ ℤ k;
-              0 ≤ k < i ⇒
-              *((char *)dest + k) ≡ \at(*((char *)src + k),LoopEntry);
-        loop invariant
-          no_eva:
-            ∀ ℤ k;
-              i ≤ k < n ⇒
-              *((char *)src + k) ≡ \at(*((char *)src + k),LoopEntry);
-        loop assigns i, *((char *)dest + (0 .. n - 1));
-        loop variant n - i;
-    */
-    while (i < n) {
-      *(d + i) = *(s + i);
-      i ++;
-    }
-  }
-  else {
-    {
-      size_t i_0 = n - (size_t)1;
-      /*@ loop invariant no_eva: 0 ≤ i_0 < n;
-          loop invariant
-            no_eva:
-              ∀ ℤ k;
-                i_0 < k < n ⇒
-                *((char *)dest + k) ≡ \at(*((char *)src + k),LoopEntry);
-          loop invariant
-            no_eva:
-              ∀ ℤ k;
-                0 ≤ k ≤ i_0 ⇒
-                *((char *)src + k) ≡ \at(*((char *)src + k),LoopEntry);
-          loop assigns i_0, *((char *)dest + (0 .. n - 1));
-          loop variant i_0;
-      */
-      while (i_0 > (size_t)0) {
-        *(d + i_0) = *(s + i_0);
-        i_0 --;
-      }
-    }
-    *(d + 0) = *(s + 0);
-  }
-  __retres = dest;
-  return_label: return __retres;
-}
-
-/*@ requires valid_string_s: valid_read_string(s);
-    ensures acsl_c_equiv: \result ≡ strlen(\old(s));
-    assigns \result;
-    assigns \result \from (indirect: *(s + (0 ..)));
- */
-size_t strlen(char const *s)
-{
-  size_t i;
-  i = (size_t)0;
-  while ((int)*(s + i) != 0) i ++;
-  return i;
-}
-
-/*@ requires valid_string_s: valid_read_nstring(s, maxlen);
-    ensures
-      result_bounded:
-        \result ≡ strlen(\old(s)) ∨ \result ≡ \old(maxlen);
-    assigns \result;
-    assigns \result
-      \from (indirect: *(s + (0 .. maxlen - 1))), (indirect: maxlen);
- */
-size_t strnlen(char const *s, size_t maxlen)
-{
-  size_t i;
-  i = (size_t)0;
-  while (1) {
-    if (i < maxlen) {
-      if (! ((int)*(s + i) != 0)) break;
-    }
-    else break;
-    i ++;
-  }
-  return i;
-}
-
-/*@ requires valid_s: valid_or_empty(s, n);
-    ensures
-      acsl_c_equiv: memset((char *)\old(s), \old(c), \old(n)) ≡ \true;
-    ensures result_ptr: \result ≡ \old(s);
-    assigns *((char *)s + (0 .. n - 1)), \result;
-    assigns *((char *)s + (0 .. n - 1)) \from c;
-    assigns \result \from s;
- */
-void *memset(void *s, int c, size_t n)
-{
-  unsigned char *p = (unsigned char *)s;
-  {
-    size_t i = (size_t)0;
-    while (i < n) {
-      *(p + i) = (unsigned char)c;
-      i ++;
-    }
-  }
-  return s;
-}
-
-/*@ requires valid_string_s1: valid_read_string(s1);
-    requires valid_string_s2: valid_read_string(s2);
-    ensures acsl_c_equiv: \result ≡ strcmp(\old(s1), \old(s2));
-    assigns \result;
-    assigns \result
-      \from (indirect: *(s1 + (0 .. strlen{Old}(s1)))),
-            (indirect: *(s2 + (0 .. strlen{Old}(s1))));
- */
-int strcmp(char const *s1, char const *s2)
-{
-  int __retres;
-  size_t i;
-  i = (size_t)0;
-  while ((int)*(s1 + i) == (int)*(s2 + i)) {
-    if ((int)*(s1 + i) == 0) {
-      __retres = 0;
-      goto return_label;
-    }
-    i ++;
-  }
-  __retres = (int)*((unsigned char *)s1 + i) - (int)*((unsigned char *)s2 + i);
-  return_label: return __retres;
-}
-
-/*@ requires valid_string_s1: valid_read_nstring(s1, n);
-    requires valid_string_s2: valid_read_nstring(s2, n);
-    ensures acsl_c_equiv: \result ≡ strncmp(\old(s1), \old(s2), \old(n));
-    assigns \result;
-    assigns \result
-      \from (indirect: *(s1 + (0 .. n - 1))),
-            (indirect: *(s2 + (0 .. n - 1))), (indirect: n);
- */
-int strncmp(char const *s1, char const *s2, size_t n)
-{
-  int __retres;
-  {
-    size_t i = (size_t)0;
-    while (i < n) {
-      if ((int)*(s1 + i) != (int)*(s2 + i)) {
-        __retres = (int)*((unsigned char *)s1 + i) - (int)*((unsigned char *)s2 + i);
-        goto return_label;
-      }
-      if ((int)*(s1 + i) == 0) {
-        __retres = 0;
-        goto return_label;
-      }
-      i ++;
-    }
-  }
-  __retres = 0;
-  return_label: return __retres;
-}
-
-/*@ requires valid_s1: valid_read_or_empty(s1, n);
-    requires valid_s2: valid_read_or_empty(s2, n);
-    requires initialization: s1: \initialized((char *)s1 + (0 .. n - 1));
-    requires initialization: s2: \initialized((char *)s2 + (0 .. n - 1));
-    requires danglingness: s1: non_escaping(s1, n);
-    requires danglingness: s2: non_escaping(s2, n);
-    ensures
-      logic_spec:
-        \result ≡
-        memcmp{Pre, Pre}((char *)\old(s1), (char *)\old(s2), \old(n));
-    assigns \result;
-    assigns \result
-      \from (indirect: *((char *)s1 + (0 .. n - 1))),
-            (indirect: *((char *)s2 + (0 .. n - 1)));
- */
-int memcmp(void const *s1, void const *s2, size_t n)
-{
-  int __retres;
-  unsigned char const *p1;
-  unsigned char const *p2;
-  p1 = (unsigned char const *)s1;
-  p2 = (unsigned char const *)s2;
-  {
-    size_t i = (size_t)0;
-    while (i < n) {
-      if ((int)*(p1 + i) != (int)*(p2 + i)) {
-        __retres = (int)*(p1 + i) - (int)*(p2 + i);
-        goto return_label;
-      }
-      i ++;
-    }
-  }
-  __retres = 0;
-  return_label: return __retres;
-}
-
-/*@ assigns \result;
-    assigns \result \from c1, c2; */
-static int char_equal_ignore_case(char c1, char c2)
-{
-  int __retres;
-  if ((int)c1 >= 'A') 
-    if ((int)c1 <= 'Z') c1 = (char)((int)c1 - ('A' - 'a'));
-  if ((int)c2 >= 'A') 
-    if ((int)c2 <= 'Z') c2 = (char)((int)c2 - ('A' - 'a'));
-  if ((int)c1 == (int)c2) {
-    __retres = 0;
-    goto return_label;
-  }
-  else {
-    __retres = (int)((unsigned char)c2) - (int)((unsigned char)c1);
-    goto return_label;
-  }
-  return_label: return __retres;
-}
-
-/*@ requires valid_string_s1: valid_read_string(s1);
-    requires valid_string_s2: valid_read_string(s2);
-    assigns \result;
-    assigns \result
-      \from (indirect: *(s1 + (0 ..))), (indirect: *(s2 + (0 ..)));
- */
-int strcasecmp(char const *s1, char const *s2)
-{
-  int __retres;
-  size_t i;
-  i = (size_t)0;
-  while (1) {
-    if ((int)*(s1 + i) != 0) {
-      if (! ((int)*(s2 + i) != 0)) break;
-    }
-    else break;
-    {
-      int res = char_equal_ignore_case(*(s1 + i),*(s2 + i));
-      if (res != 0) {
-        __retres = res;
-        goto return_label;
-      }
-    }
-    i ++;
-  }
-  if ((int)*(s1 + i) == 0) {
-    if ((int)*(s2 + i) == 0) {
-      __retres = 0;
-      goto return_label;
-    }
-    else goto _LAND;
-  }
-  else {
-    _LAND: ;
-    if ((int)*(s1 + i) == 0) {
-      __retres = -1;
-      goto return_label;
-    }
-    else {
-      __retres = 1;
-      goto return_label;
-    }
-  }
-  return_label: return __retres;
-}
-
-/*@ requires valid_string_src: valid_read_string(src);
-    requires valid_string_dest: valid_string(dest);
-    requires room_string: \valid(dest + (0 .. strlen(dest) + strlen(src)));
-    requires
-      separation:
-        \separated(
-          dest + (0 .. strlen(dest) + strlen(src)), src + (0 .. strlen(src))
-          );
-    ensures
-      sum_of_lengths: strlen(\old(dest)) ≡ \old(strlen(dest) + strlen(src));
-    ensures
-      initialization: dest:
-        \initialized(\old(dest) + (0 .. \old(strlen(dest) + strlen(src))));
-    ensures
-      dest_null_terminated:
-        *(\old(dest) + \old(strlen(dest) + strlen(src))) ≡ 0;
-    ensures result_ptr: \result ≡ \old(dest);
-    assigns *(dest +
-              (strlen{Old}(dest) .. strlen{Old}(dest) + strlen{Old}(src))),
-            \result;
-    assigns
-    *(dest + (strlen{Old}(dest) .. strlen{Old}(dest) + strlen{Old}(src)))
-      \from *(src + (0 .. strlen{Old}(src)));
-    assigns \result \from dest;
- */
-char *strcat(char *dest, char const *src)
-{
-  size_t i;
-  size_t n = strlen((char const *)dest);
-  i = (size_t)0;
-  while ((int)*(src + i) != 0) {
-    *(dest + (n + i)) = *(src + i);
-    i ++;
-  }
-  *(dest + (n + i)) = (char)0;
-  return dest;
-}
-
-/*@ requires valid_nstring_src: valid_read_nstring(src, n);
-    requires valid_string_dest: valid_string(dest);
-    requires
-      separation:
-        \separated(
-          dest + (0 .. strlen(dest) + strnlen(src, n)),
-          src + (0 .. strnlen(src, n))
-          );
-    ensures result_ptr: \result ≡ \old(dest);
-    assigns *(dest + (strlen{Old}(dest) .. strlen{Old}(dest) + n)), \result;
-    assigns *(dest + (strlen{Old}(dest) .. strlen{Old}(dest) + n))
-      \from *(src + (0 .. n - 1));
-    assigns \result \from dest;
-    
-    behavior complete:
-      assumes src_fits: strnlen(src, n) < n;
-      requires
-        room_string: \valid((dest + strlen(dest)) + (0 .. strlen(src)));
-      ensures
-        sum_of_lengths:
-          strlen(\old(dest)) ≡ \old(strlen(dest) + strlen(src));
-      assigns *(dest +
-                (strlen{Old}(dest) .. strlen{Old}(dest) + strlen{Old}(src))),
-              \result;
-      assigns
-      *(dest + (strlen{Old}(dest) .. strlen{Old}(dest) + strlen{Old}(src)))
-        \from *(src + (0 .. strlen{Old}(src) - 1));
-      assigns \result \from dest;
-    
-    behavior partial:
-      assumes src_too_large: strnlen(src, n) ≡ n;
-      requires room_string: \valid((dest + strlen(dest)) + (0 .. n));
-      ensures
-        sum_of_bounded_lengths:
-          strlen(\old(dest)) ≡ \old(strlen(dest)) + \old(n);
-      assigns *(dest + (strlen{Old}(dest) .. strlen{Old}(dest) + n)),
-              \result;
-      assigns *(dest + (strlen{Old}(dest) .. strlen{Old}(dest) + n))
-        \from *(src + (0 .. n - 1));
-      assigns \result \from dest;
-    
-    complete behaviors partial, complete;
-    disjoint behaviors partial, complete;
- */
-char *strncat(char *dest, char const *src, size_t n)
-{
-  size_t i;
-  size_t dest_len = strlen((char const *)dest);
-  i = (size_t)0;
-  while (i < n) {
-    if ((int)*(src + i) == 0) break;
-    *(dest + (dest_len + i)) = *(src + i);
-    i ++;
-  }
-  *(dest + (dest_len + i)) = (char)0;
-  return dest;
-}
-
-/*@ requires valid_string_src: valid_read_string(src);
-    requires room_string: \valid(dest + (0 .. strlen(src)));
-    requires
-      separation:
-        \separated(dest + (0 .. strlen(src)), src + (0 .. strlen(src)));
-    ensures equal_contents: strcmp(\old(dest), \old(src)) ≡ 0;
-    ensures result_ptr: \result ≡ \old(dest);
-    assigns *(dest + (0 .. strlen{Old}(src))), \result;
-    assigns *(dest + (0 .. strlen{Old}(src)))
-      \from *(src + (0 .. strlen{Old}(src)));
-    assigns \result \from dest;
- */
-char *strcpy(char *dest, char const *src)
-{
-  size_t i;
-  i = (size_t)0;
-  while ((int)*(src + i) != 0) {
-    *(dest + i) = *(src + i);
-    i ++;
-  }
-  *(dest + i) = (char)0;
-  return dest;
-}
-
-/*@ requires valid_string_src: valid_read_string(src);
-    requires room_string: \valid(dest + (0 .. strlen(src)));
-    requires
-      separation:
-        \separated(dest + (0 .. strlen(src)), src + (0 .. strlen(src)));
-    ensures equal_contents: strcmp(\old(dest), \old(src)) ≡ 0;
-    ensures points_to_end: \result ≡ \old(dest) + strlen(\old(dest));
-    assigns *(dest + (0 .. strlen{Old}(src))), \result;
-    assigns *(dest + (0 .. strlen{Old}(src)))
-      \from *(src + (0 .. strlen{Old}(src)));
-    assigns \result \from dest;
- */
-char *stpcpy(char *dest, char const *src)
-{
-  char *__retres;
-  size_t i;
-  i = (size_t)0;
-  while ((int)*(src + i) != 0) {
-    *(dest + i) = *(src + i);
-    i ++;
-  }
-  *(dest + i) = (char)0;
-  __retres = dest + i;
-  return __retres;
-}
-
-/*@ requires valid_nstring_src: valid_read_nstring(src, n);
-    requires room_nstring: \valid(dest + (0 .. n - 1));
-    requires separation: \separated(dest + (0 .. n - 1), src + (0 .. n - 1));
-    ensures result_ptr: \result ≡ \old(dest);
-    ensures initialization: \initialized(\old(dest) + (0 .. \old(n) - 1));
-    assigns *(dest + (0 .. n - 1)), \result;
-    assigns *(dest + (0 .. n - 1)) \from *(src + (0 .. n - 1));
-    assigns \result \from dest;
-    
-    behavior complete:
-      assumes src_fits: strlen(src) < n;
-      ensures equal_after_copy: strcmp(\old(dest), \old(src)) ≡ 0;
-    
-    behavior partial:
-      assumes src_too_long: n ≤ strlen(src);
-      ensures
-        equal_prefix:
-          memcmp{Post, Post}(\old(dest), \old(src), \old(n)) ≡ 0;
- */
-char *strncpy(char *dest, char const *src, size_t n)
-{
-  size_t i;
-  i = (size_t)0;
-  while (i < n) {
-    *(dest + i) = *(src + i);
-    if ((int)*(src + i) == 0) break;
-    i ++;
-  }
-  while (i < n) {
-    *(dest + i) = (char)0;
-    i ++;
-  }
-  return dest;
-}
-
-/*@ requires valid_string_s: valid_read_string(s);
-    assigns \result;
-    assigns \result
-      \from s, (indirect: *(s + (0 .. strlen{Old}(s)))), (indirect: c);
-    
-    behavior found:
-      assumes char_found: strchr(s, c) ≡ \true;
-      ensures result_valid_string: valid_read_string(\result);
-      ensures result_char: *\result ≡ (char)\old(c);
-      ensures result_same_base: \base_addr(\result) ≡ \base_addr(\old(s));
-      ensures
-        result_in_length: \old(s) ≤ \result ≤ \old(s) + strlen(\old(s));
-      ensures
-        result_first_occurrence:
-          ∀ char *p; \old(s) ≤ p < \result ⇒ *p ≢ (char)\old(c);
-    
-    behavior not_found:
-      assumes char_not_found: ¬(strchr(s, c) ≡ \true);
-      ensures result_null: \result ≡ \null;
-    
-    complete behaviors not_found, found;
-    disjoint behaviors not_found, found;
- */
-char *strchr(char const *s, int c)
-{
-  char *__retres;
-  size_t i;
-  char const ch = (char)c;
-  i = (size_t)0;
-  while ((int)*(s + i) != (int)ch) {
-    if ((int)*(s + i) == 0) {
-      __retres = (char *)0;
-      goto return_label;
-    }
-    i ++;
-  }
-  __retres = (char *)(s + i);
-  return_label: return __retres;
-}
-
-/*@ requires valid_string_s: valid_read_string(s);
-    ensures
-      result_null_or_same_base:
-        \result ≡ \null ∨
-        (valid_read_string(\result) ∧
-         \base_addr(\result) ≡ \base_addr(\old(s)));
-    assigns \result;
-    assigns \result
-      \from s, (indirect: *(s + (0 .. strlen{Old}(s)))), (indirect: c);
- */
-char *strrchr(char const *s, int c)
-{
-  char *__retres;
-  char const ch = (char)c;
-  {
-    size_t tmp;
-    tmp = strlen(s);
-    size_t i = tmp + (size_t)1;
-    while (i > (size_t)0) {
-      if ((int)*(s + (i - (size_t)1)) == (int)ch) {
-        __retres = (char *)(s + (i - (size_t)1));
-        goto return_label;
-      }
-      i --;
-    }
-  }
-  __retres = (char *)0;
-  return_label: return __retres;
-}
-
-/*@ requires
-      valid:
-        valid_read_or_empty(s, n) ∨
-        \valid_read((unsigned char *)s + (0 .. memchr_off((char *)s, c, n)));
-    requires
-      initialization:
-        \initialized((unsigned char *)s + (0 .. n - 1)) ∨
-        \initialized((unsigned char *)s + (0 .. memchr_off((char *)s, c, n)));
-    requires
-      danglingness:
-        non_escaping(s, n) ∨
-        non_escaping(s, (size_t)(memchr_off((char *)s, c, n) + 1));
-    assigns \result;
-    assigns \result \from s, c, *((unsigned char *)s + (0 .. n - 1));
-    
-    behavior found:
-      assumes char_found: memchr((char *)s, c, n) ≡ \true;
-      ensures result_valid_read: \valid_read((char *)\result);
-      ensures result_same_base: \base_addr(\result) ≡ \base_addr(\old(s));
-      ensures result_char: (int)*((char *)\result) ≡ \old(c);
-      ensures
-        result_in_str:
-          ∀ ℤ i;
-            0 ≤ i < \old(n) ⇒
-            *((unsigned char *)\old(s) + i) ≡ \old(c) ⇒
-            (unsigned char *)\result ≤ (unsigned char *)\old(s) + i;
-    
-    behavior not_found:
-      assumes char_not_found: ¬(memchr((char *)s, c, n) ≡ \true);
-      ensures result_null: \result ≡ \null;
- */
-void *memchr(void const *s, int c, size_t n)
-{
-  void *__retres;
-  unsigned char const ch = (unsigned char)c;
-  unsigned char const *ss = (unsigned char const *)s;
-  {
-    size_t i = (size_t)0;
-    while (i < n) {
-      if ((int)*(ss + i) == (int)ch) {
-        __retres = (void *)(ss + i);
-        goto return_label;
-      }
-      i ++;
-    }
-  }
-  __retres = (void *)0;
-  return_label: return __retres;
-}
-
-/*@ requires valid: valid_read_or_empty(s, n);
-    requires initialization: \initialized((unsigned char *)s + (0 .. n - 1));
-    requires danglingness: non_escaping(s, n);
-    assigns \result;
-    assigns \result
-      \from s, (indirect: c),
-            (indirect: *((unsigned char *)s + (0 .. n - 1)));
-    
-    behavior found:
-      assumes char_found: memchr((char *)s, c, n) ≡ \true;
-      ensures result_valid_read: \valid_read((char *)\result);
-      ensures result_same_base: \base_addr(\result) ≡ \base_addr(\old(s));
-    
-    behavior not_found:
-      assumes char_not_found: ¬(memchr((char *)s, c, n) ≡ \true);
-      ensures result_null: \result ≡ \null;
-    
-    complete behaviors not_found, found;
-    disjoint behaviors not_found, found;
- */
-void *memrchr(void const *s, int c, size_t n)
-{
-  void *__retres;
-  unsigned char const ch = (unsigned char)c;
-  unsigned char const *ss = (unsigned char const *)s;
-  {
-    size_t i = n;
-    while (i > (size_t)0) {
-      if ((int)*(ss + (i - (size_t)1)) == (int)ch) {
-        __retres = (void *)(ss + (i - (size_t)1));
-        goto return_label;
-      }
-      i --;
-    }
-  }
-  __retres = (void *)0;
-  return_label: return __retres;
-}
-
-/*@ requires valid_string_haystack: valid_read_string(haystack);
-    requires valid_string_needle: valid_read_string(needle);
-    ensures
-      result_null_or_in_haystack:
-        \result ≡ \null ∨
-        (valid_read_string(\result) ∧
-         \base_addr(\result) ≡ \base_addr(\old(haystack)) ∧
-         memcmp{Pre, Pre}(\result, \old(needle), strlen(\old(needle))) ≡ 0);
-    assigns \result;
-    assigns \result
-      \from haystack, (indirect: *(haystack + (0 .. strlen{Old}(haystack)))),
-            (indirect: *(needle + (0 .. strlen{Old}(needle))));
- */
-char *strstr(char const *haystack, char const *needle)
-{
-  char *__retres;
-  if ((int)*(needle + 0) == 0) {
-    __retres = (char *)haystack;
-    goto return_label;
-  }
-  {
-    size_t i = (size_t)0;
-    while ((int)*(haystack + i) != 0) {
-      {
-        size_t j;
-        j = (size_t)0;
-        while ((int)*(haystack + (i + j)) != 0) {
-          if ((int)*(haystack + (i + j)) != (int)*(needle + j)) break;
-          j ++;
-        }
-        if ((int)*(needle + j) == 0) {
-          __retres = (char *)(haystack + i);
-          goto return_label;
-        }
-      }
-      i ++;
-    }
-  }
-  __retres = (char *)0;
-  return_label: return __retres;
-}
-
-static int strerror___fc_strerror_init;
-/*@ ensures result_internal_str: \result ≡ __fc_p_strerror;
-    ensures result_nul_terminated: *(\result + 63) ≡ 0;
-    ensures result_valid_string: valid_read_string(\result);
-    assigns \result;
-    assigns \result \from __fc_p_strerror, (indirect: errnum);
- */
-char *strerror(int errnum)
-{
-  char *__retres;
-  if (! strerror___fc_strerror_init) {
-    Frama_C_make_unknown(__fc_strerror,(size_t)63);
-    __fc_strerror[63] = (char)0;
-    strerror___fc_strerror_init = 1;
-  }
-  __retres = __fc_strerror;
-  return __retres;
-}
-
-/*@ requires valid_string_s: valid_read_string(s);
-    assigns \result;
-    assigns \result
-      \from (indirect: *(s + (0 .. strlen{Old}(s)))),
-            (indirect: __fc_heap_status);
-    allocates \result;
-    
-    behavior allocation:
-      assumes can_allocate: is_allocable(strlen(s) + 1);
-      ensures allocation: \fresh{Old, Here}(\result,strlen(\old(s)) + 1);
-      ensures
-        result_valid_string_and_same_contents:
-          valid_string(\result) ∧ strcmp(\result, \old(s)) ≡ 0;
-      assigns __fc_heap_status, \result;
-      assigns __fc_heap_status
-        \from __fc_heap_status, (indirect: *(s + (0 .. strlen{Old}(s))));
-      assigns \result
-        \from (indirect: *(s + (0 .. strlen{Old}(s)))),
-              (indirect: __fc_heap_status);
-    
-    behavior no_allocation:
-      assumes cannot_allocate: ¬is_allocable(strlen(s) + 1);
-      ensures result_null: \result ≡ \null;
-      assigns \result;
-      assigns \result \from \nothing;
-      allocates \nothing;
- */
-char *strdup(char const *s)
-{
-  char *__retres;
-  size_t tmp;
-  tmp = strlen(s);
-  size_t l = tmp + (size_t)1;
-  char *p = malloc(l);
-  if (! p) {
-    __fc_errno = 12;
-    __retres = (char *)0;
-    goto return_label;
-  }
-  memcpy((void *)p,(void const *)s,l);
-  __retres = p;
-  return_label: return __retres;
-}
-
-/*@ requires valid_string_s: valid_read_string(s);
-    assigns \result;
-    assigns \result
-      \from (indirect: *(s + (0 .. strlen{Old}(s)))), (indirect: n),
-            (indirect: __fc_heap_status);
-    allocates \result;
-    
-    behavior allocation:
-      assumes can_allocate: is_allocable(strnlen(s, n) + 1);
-      ensures
-        allocation: \fresh{Old, Here}(\result,strnlen(\old(s), \old(n)) + 1);
-      ensures
-        result_valid_string_bounded_and_same_prefix:
-          \valid(\result + (0 .. strnlen(\old(s), \old(n)))) ∧
-          valid_string(\result) ∧ strlen(\result) ≤ \old(n) ∧
-          strncmp(\result, \old(s), \old(n)) ≡ 0;
-      assigns __fc_heap_status, \result;
-      assigns __fc_heap_status
-        \from (indirect: s), (indirect: n), __fc_heap_status;
-      assigns \result
-        \from (indirect: *(s + (0 .. strlen{Old}(s)))), (indirect: n),
-              (indirect: __fc_heap_status);
-    
-    behavior no_allocation:
-      assumes cannot_allocate: ¬is_allocable(strnlen(s, n) + 1);
-      ensures result_null: \result ≡ \null;
-      assigns \result;
-      assigns \result \from \nothing;
-      allocates \nothing;
- */
-char *strndup(char const *s, size_t n)
-{
-  char *__retres;
-  size_t l;
-  l = (size_t)0;
-  while (l < n) {
-    if ((int)*(s + l) == 0) break;
-    l ++;
-  }
-  char *p = malloc(l + (size_t)1);
-  if (! p) {
-    __fc_errno = 12;
-    __retres = (char *)0;
-    goto return_label;
-  }
-  memcpy((void *)p,(void const *)s,l);
-  *(p + l) = (char)0;
-  __retres = p;
-  return_label: return __retres;
-}
-
-static int strsignal___fc_strsignal_init;
-/*@ ensures result_internal_str: \result ≡ __fc_p_strsignal;
-    ensures result_nul_terminated: *(\result + 63) ≡ 0;
-    ensures result_valid_string: valid_read_string(\result);
-    assigns \result;
-    assigns \result \from __fc_p_strsignal, (indirect: signum);
- */
-char *strsignal(int signum)
-{
-  char *__retres;
-  if (! strsignal___fc_strsignal_init) {
-    Frama_C_make_unknown(__fc_strsignal,(size_t)63);
-    __fc_strsignal[63] = (char)0;
-    strsignal___fc_strsignal_init = 1;
-  }
-  __retres = __fc_strsignal;
-  return __retres;
-}
-
-/*@ requires valid_string_path: valid_read_string(path);
-    requires valid_amode: (amode & ~((4 | 2) | 1)) ≡ 0 ∨ amode ≡ 0;
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result;
-    assigns \result
-      \from (indirect: path), (indirect: *(path + (0 ..))), (indirect: amode);
- */
-extern int access(char const *path, int amode);
-
-/*@ requires valid_string_path: valid_read_string(path);
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result;
-    assigns \result \from (indirect: path), (indirect: *(path + (0 ..)));
- */
-extern int chdir(char const *path);
-
-/*@ requires valid_string_path: valid_read_string(path);
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result;
-    assigns \result \from (indirect: path), (indirect: *(path + (0 ..)));
- */
-extern int chroot(char const *path);
-
-/*@ requires valid_string_path: valid_read_string(path);
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result;
-    assigns \result
-      \from (indirect: path), (indirect: *(path + (0 ..))),
-            (indirect: owner), (indirect: group);
- */
-extern int chown(char const *path, uid_t owner, gid_t group);
-
-/*@ requires valid_fd: 0 ≤ fd < 1024;
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns __fc_fds[fd], \result;
-    assigns __fc_fds[fd] \from fd, __fc_fds[fd];
-    assigns \result \from (indirect: fd), (indirect: __fc_fds[fd]);
- */
-extern int close(int fd);
-
-/*@ requires valid_fildes: 0 ≤ fildes < 1024;
-    ensures
-      result_valid_fildes_or_error:
-        \result ≡ -1 ∨ (\old(fildes) ≤ \result < 1024);
-    assigns __fc_fds[fildes ..], \result;
-    assigns __fc_fds[fildes ..] \from fildes;
-    assigns \result \from fildes;
- */
-extern int dup(int fildes);
-
-/*@ requires valid_fildes: 0 ≤ fildes < 1024;
-    requires valid_fildes2: 0 ≤ fildes2 < 1024;
-    ensures
-      result_fildes2_or_error: \result ≡ \old(fildes2) ∨ \result ≡ -1;
-    assigns __fc_fds[fildes2], \result;
-    assigns __fc_fds[fildes2] \from fildes, fildes2, __fc_fds[fildes2];
-    assigns \result
-      \from fildes, fildes2, __fc_fds[fildes], __fc_fds[fildes2];
- */
-extern int dup2(int fildes, int fildes2);
-
-/*@ requires valid_string_path: valid_read_string(path);
-    requires valid_string_arg: valid_read_string(arg);
-    assigns \result;
-    assigns \result \from *(path + (0 ..)), *(arg + (0 ..));
- */
-extern int execl(char const *path, char const *arg, void * const *__va_params);
-
-/*@ requires valid_string_path: valid_read_string(path);
-    requires valid_string_arg: valid_read_string(arg);
-    assigns \result;
-    assigns \result \from *(path + (0 ..)), *(arg + (0 ..));
- */
-extern int execle(char const *path, char const *arg,
-                  void * const *__va_params);
-
-/*@ requires valid_string_path: valid_read_string(path);
-    requires valid_string_arg: valid_read_string(arg);
-    assigns \result;
-    assigns \result \from *(path + (0 ..)), *(arg + (0 ..));
- */
-extern int execlp(char const *path, char const *arg,
-                  void * const *__va_params);
-
-/*@ requires valid_string_path: valid_read_string(path);
-    requires valid_string_argv0: valid_read_string(*(argv + 0));
-    assigns \result;
-    assigns \result \from *(path + (0 ..)), *(argv + (0 ..));
- */
-extern int execv(char const *path, char * const *argv);
-
-/*@ requires valid_path: valid_read_string(path);
-    requires valid_argv0: valid_read_string(*(argv + 0));
-    assigns \result;
-    assigns \result \from *(path + (0 ..)), *(argv + (0 ..));
- */
-extern int execve(char const *path, char * const *argv, char * const *env);
-
-/*@ requires valid_string_path: valid_read_string(path);
-    requires valid_string_argv0: valid_read_string(*(argv + 0));
-    assigns \result;
-    assigns \result \from *(path + (0 ..)), *(argv + (0 ..));
- */
-extern int execvp(char const *path, char * const *argv);
-
-/*@ terminates \false;
-    ensures never_terminates: \false;
-    assigns \nothing; */
-extern  __attribute__((__noreturn__)) void _exit(int __x0);
-
-/*@ ensures
-      result_ok_child_or_error:
-        \result ≡ 0 ∨ \result > 0 ∨ \result ≡ -1;
-    assigns \result;
-    assigns \result \from \nothing;
- */
-extern pid_t fork(void);
-
-/*@ requires valid_buf: \valid(buf + (0 .. size - 1));
-    ensures result_ok_or_error: \result ≡ \null ∨ \result ≡ \old(buf);
-    assigns *(buf + (0 .. size - 1)), \result;
-    assigns *(buf + (0 .. size - 1)) \from (indirect: buf), (indirect: size);
-    assigns \result \from buf, (indirect: size);
- */
-extern char *getcwd(char *buf, size_t size);
-
-/*@ assigns \result;
-    assigns \result \from \nothing; */
-extern gid_t getegid(void);
-
-/*@ assigns \result;
-    assigns \result \from \nothing; */
-extern uid_t geteuid(void);
-
-/*@ assigns \result;
-    assigns \result \from \nothing; */
-extern gid_t getgid(void);
-
-extern char volatile __fc_hostname[64];
-
-/*@ requires name_has_room: \valid(name + (0 .. len - 1));
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result, *(name + (0 .. len - 1));
-    assigns \result
-      \from (indirect: __fc_hostname[0 .. len]), (indirect: len);
-    assigns *(name + (0 .. len - 1))
-      \from (indirect: __fc_hostname[0 .. len]), (indirect: len);
- */
-extern int gethostname(char *name, size_t len);
-
-/*@ requires name_valid_string: valid_read_nstring(name, len);
-    requires bounded_len: len ≤ 64;
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns __fc_hostname[0 .. len], \result;
-    assigns __fc_hostname[0 .. len]
-      \from *(name + (0 .. len - 1)), (indirect: len);
-    assigns \result \from (indirect: __fc_hostname[0 .. len]);
- */
-extern int sethostname(char const *name, size_t len);
-
-/*@ assigns \result;
-    assigns \result \from (indirect: pid); */
-extern pid_t getpgid(pid_t pid);
-
-/*@ assigns \result;
-    assigns \result \from \nothing; */
-extern pid_t getpgrp(void);
-
-/*@ assigns \result;
-    assigns \result \from \nothing; */
-extern pid_t getpid(void);
-
-/*@ assigns \result;
-    assigns \result \from \nothing; */
-extern pid_t getppid(void);
-
-/*@ assigns \result;
-    assigns \result \from \nothing; */
-extern pid_t getsid(pid_t __x0);
-
-/*@ assigns \result;
-    assigns \result \from \nothing; */
-extern uid_t getuid(void);
-
-/*@ ensures result_true_or_false: \result ≡ 0 ∨ \result ≡ 1;
-    assigns \result;
-    assigns \result \from (indirect: fd), (indirect: __fc_fds[fd]);
- */
-extern int isatty(int fd);
-
-/*@ requires valid_path: valid_read_string(path1);
-    requires valid_path: valid_read_string(path2);
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result;
-    assigns \result
-      \from (indirect: *(path1 + (0 .. strlen{Old}(path1)))),
-            (indirect: *(path2 + (0 .. strlen{Old}(path2))));
- */
-extern int link(char const *path1, char const *path2);
-
-/*@ requires valid_fd: 0 ≤ fd < 1024;
-    requires valid_whence: whence ≡ 0 ∨ whence ≡ 1 ∨ whence ≡ 2;
-    ensures result_error_or_offset: \result ≡ -1 ∨ 0 ≤ \result;
-    assigns \result, __fc_fds[fd];
-    assigns \result
-      \from (indirect: fd), (indirect: __fc_fds[fd]), (indirect: offset),
-            (indirect: whence);
-    assigns __fc_fds[fd]
-      \from (indirect: fd), __fc_fds[fd], (indirect: offset),
-            (indirect: whence);
- */
-extern off_t lseek(int fd, off_t offset, int whence);
-
-/*@ requires valid_path: valid_read_string(path);
-    assigns \result;
-    assigns \result \from (indirect: *(path + (0 ..))), (indirect: name);
- */
-extern long pathconf(char const *path, int name);
-
-/*@ requires valid_pipefd: \valid(pipefd + (0 .. 1));
-    ensures initialization: pipefd: \initialized(\old(pipefd) + (0 .. 1));
-    ensures valid_fd0: 0 ≤ *(\old(pipefd) + 0) < 1024;
-    ensures valid_fd1: 0 ≤ *(\old(pipefd) + 1) < 1024;
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns *(pipefd + (0 .. 1)), \result;
-    assigns *(pipefd + (0 .. 1)) \from (indirect: __fc_fds[0 ..]);
-    assigns \result \from (indirect: __fc_fds[0 ..]);
- */
-extern int pipe(int pipefd[2]);
-
-/*@ requires valid_fd: 0 ≤ fd < 1024;
-    requires buf_has_room: \valid((char *)buf + (0 .. count - 1));
-    assigns __fc_fds[fd], \result, *((char *)buf + (0 .. count - 1));
-    assigns __fc_fds[fd] \from __fc_fds[fd];
-    assigns \result \from (indirect: __fc_fds[fd]), (indirect: count);
-    assigns *((char *)buf + (0 .. count - 1))
-      \from (indirect: __fc_fds[fd]), (indirect: count);
-    
-    behavior full_read:
-      assumes
-        nondet_small_count:
-          Frama_C_entropy_source ≢ 0 ∧ count ≤ 2147483647;
-      ensures res_full: \result ≡ \old(count);
-      ensures
-        res_init: initialization:
-          \initialized((char *)\old(buf) + (0 .. \old(count) - 1));
-    
-    behavior large_read_implementation_defined:
-      assumes
-        nondet_large_count:
-          Frama_C_entropy_source ≢ 0 ∧ count > 2147483647;
-      ensures
-        res_init: initialization:
-          \initialized((char *)\old(buf) + (0 .. \old(count) - 1));
-    
-    behavior partial_or_error:
-      assumes nondet: Frama_C_entropy_source ≡ 0;
-      ensures result_error_or_read_length: -1 ≤ \result < \old(count);
-      ensures
-        initialization: buf:
-          \initialized((char *)\old(buf) + (0 .. \result - 1));
-    
-    complete behaviors partial_or_error,
-                       large_read_implementation_defined,
-                       full_read;
-    disjoint behaviors partial_or_error,
-                       large_read_implementation_defined,
-                       full_read;
- */
-extern ssize_t read(int fd, void *buf, size_t count);
-
-/*@ requires valid_name: valid_read_string(name);
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result;
-    assigns \result \from (indirect: *(name + (0 .. strlen{Old}(name))));
- */
-extern int rmdir(char const *name);
-
-/*@ ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result;
-    assigns \result \from (indirect: gid);
- */
-extern int setegid(gid_t gid);
-
-/*@ ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result;
-    assigns \result \from (indirect: uid);
- */
-extern int seteuid(uid_t uid);
-
-/*@ ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result;
-    assigns \result \from (indirect: gid);
- */
-extern int setgid(gid_t gid);
-
-/*@ ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result;
-    assigns \result \from (indirect: pid), (indirect: pgid);
- */
-extern int setpgid(pid_t pid, pid_t pgid);
-
-/*@ ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result;
-    assigns \result \from (indirect: rgid), (indirect: egid);
- */
-extern int setregid(gid_t rgid, gid_t egid);
-
-/*@ ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result;
-    assigns \result \from (indirect: ruid), (indirect: euid);
- */
-extern int setreuid(uid_t ruid, uid_t euid);
-
-/*@ ensures result_pgid_or_error: \result ≡ -1 ∨ \result ≥ 0;
-    assigns \result;
-    assigns \result \from \nothing;
- */
-extern pid_t setsid(void);
-
-/*@ ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result;
-    assigns \result \from (indirect: uid);
- */
-extern int setuid(uid_t uid);
-
-/*@ ensures unslept: 0 ≤ \result ≤ \old(seconds);
-    assigns \result;
-    assigns \result \from seconds;
- */
-extern unsigned int sleep(unsigned int seconds);
-
-/*@ assigns \nothing; */
-extern void sync(void);
-
-/*@ assigns \result;
-    assigns \result \from (indirect: name); */
-extern long sysconf(int name);
-
-char volatile __fc_ttyname[32];
-char volatile *__fc_p_ttyname = __fc_ttyname;
-/*@ requires valid_fildes: 0 ≤ fildes < 1024;
-    ensures
-      result_name_or_null: \result ≡ __fc_p_ttyname ∨ \result ≡ \null;
-    assigns \result;
-    assigns \result \from __fc_p_ttyname, (indirect: fildes);
- */
-extern char *ttyname(int fildes);
-
-/*@ requires valid_string_path: valid_read_string(path);
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result;
-    assigns \result \from (indirect: *(path + (0 .. strlen{Old}(path))));
- */
-extern int unlink(char const *path);
-
-/*@ ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result, Frama_C_entropy_source;
-    assigns \result
-      \from (indirect: usec), (indirect: Frama_C_entropy_source);
-    assigns Frama_C_entropy_source \from Frama_C_entropy_source;
- */
-extern int usleep(useconds_t usec);
-
-/*@ requires valid_fd: 0 ≤ fd < 1024;
-    requires buf_has_room: \valid_read((char *)buf + (0 .. count - 1));
-    ensures
-      result_error_or_written_bytes:
-        \result ≡ -1 ∨ (0 ≤ \result ≤ \old(count));
-    assigns __fc_fds[fd], \result;
-    assigns __fc_fds[fd]
-      \from (indirect: fd), (indirect: count), __fc_fds[fd];
-    assigns \result
-      \from (indirect: fd), (indirect: count), (indirect: __fc_fds[fd]);
- */
-extern ssize_t write(int fd, void const *buf, size_t count);
-
-/*@ requires valid_ruid: \valid(ruid);
-    requires valid_euid: \valid(suid);
-    requires valid_suid: \valid(euid);
-    ensures
-      initialization: result_ok_or_error:
-        (\result ≡ 0 ∧ \initialized(\old(ruid)) ∧
-         \initialized(\old(euid)) ∧ \initialized(\old(suid))) ∨
-        \result ≡ -1;
-    assigns *ruid, *euid, *suid, \result;
-    assigns *ruid \from \nothing;
-    assigns *euid \from \nothing;
-    assigns *suid \from \nothing;
-    assigns \result
-      \from (indirect: ruid), (indirect: euid), (indirect: suid);
- */
-int getresuid(uid_t *ruid, uid_t *euid, uid_t *suid);
-
-/*@ ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result;
-    assigns \result
-      \from (indirect: ruid), (indirect: euid), (indirect: suid);
- */
-int setresuid(uid_t ruid, uid_t euid, uid_t suid);
-
-/*@ requires valid_rgid: \valid(rgid);
-    requires valid_egid: \valid(sgid);
-    requires valid_sgid: \valid(egid);
-    ensures
-      initialization: result_ok_or_error:
-        (\result ≡ 0 ∧ \initialized(\old(rgid)) ∧
-         \initialized(\old(egid)) ∧ \initialized(\old(sgid))) ∨
-        \result ≡ -1;
-    assigns *rgid, *egid, *sgid, \result;
-    assigns *rgid \from \nothing;
-    assigns *egid \from \nothing;
-    assigns *sgid \from \nothing;
-    assigns \result
-      \from (indirect: rgid), (indirect: egid), (indirect: sgid);
- */
-int getresgid(gid_t *rgid, gid_t *egid, gid_t *sgid);
-
-/*@ ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result;
-    assigns \result
-      \from (indirect: rgid), (indirect: egid), (indirect: sgid);
- */
-int setresgid(gid_t rgid, gid_t egid, gid_t sgid);
-
-char *optarg;
-int optind;
-
-int opterr;
-
-extern int optopt;
-
-int getopt(int argc, char * const *argv, char const *optstring);
-
-int optind = 1;
-int opterr = 1;
-/*@ assigns \result, *optarg, optind, opterr, optopt;
-    assigns \result
-      \from argc, *(argv + (0 .. argc - 1)), *(optstring + (0 ..));
-    assigns *optarg
-      \from argc, *(argv + (0 .. argc - 1)), *(optstring + (0 ..));
-    assigns optind
-      \from argc, *(argv + (0 .. argc - 1)), *(optstring + (0 ..));
-    assigns opterr
-      \from argc, *(argv + (0 .. argc - 1)), *(optstring + (0 ..));
-    assigns optopt
-      \from argc, *(argv + (0 .. argc - 1)), *(optstring + (0 ..));
- */
-int getopt(int argc, char * const *argv, char const *optstring)
-{
-  int __retres;
-  int tmp_1;
-  size_t tmp_0;
-  int tmp_3;
-  unsigned char tmp_2;
-  if (argc == 0) {
-    __retres = -1;
-    goto return_label;
-  }
-  int nondet_ind = Frama_C_interval(1,argc - 1);
-  tmp_0 = strlen((char const *)*(argv + nondet_ind));
-  tmp_1 = Frama_C_interval(0,(int)(tmp_0 - (size_t)1));
-  int nondet_indlen = tmp_1;
-  optarg = (char *)Frama_C_nondet_ptr((void *)0,
-                                      (void *)(*(argv + nondet_ind) + nondet_indlen));
-  optind = Frama_C_interval(1,argc + 1);
-  tmp_2 = Frama_C_unsigned_char_interval((unsigned char)0,
-                                         (unsigned char)255U);
-  tmp_3 = Frama_C_nondet(-1,(int)tmp_2);
-  __retres = tmp_3;
-  return_label: return __retres;
-}
-
-/*@ requires
-      valid_dest: valid_or_empty((void *)dest, (size_t)(sizeof(wchar_t) * n));
-    requires
-      valid_src:
-        valid_read_or_empty((void *)src, (size_t)(sizeof(wchar_t) * n));
-    requires
-      separation: dest: src:
-        \separated(dest + (0 .. n - 1), src + (0 .. n - 1));
-    ensures result_ptr: \result ≡ \old(dest);
-    assigns *(dest + (0 .. n - 1)), \result;
-    assigns *(dest + (0 .. n - 1))
-      \from *(src + (0 .. n - 1)), (indirect: src), (indirect: n);
-    assigns \result \from dest;
- */
-wchar_t *wmemcpy(wchar_t *dest, wchar_t const *src, size_t n)
-{
-  {
-    size_t i = (size_t)0;
-    while (i < n) {
-      *(dest + i) = *(src + i);
-      i ++;
-    }
-  }
-  return dest;
-}
-
-/*@ requires valid_wcs: \valid(dest + (0 .. len - 1));
-    ensures result_ptr: \result ≡ \old(dest);
-    ensures
-      initialization: wcs: \initialized(\old(dest) + (0 .. \old(len) - 1));
-    ensures
-      contents_equal_wc:
-        \subset(*(\old(dest) + (0 .. \old(len) - 1)), \old(val));
-    assigns *(dest + (0 .. len - 1)), \result;
-    assigns *(dest + (0 .. len - 1)) \from val, (indirect: len);
-    assigns \result \from dest;
- */
-wchar_t *wmemset(wchar_t *dest, wchar_t val, size_t len)
-{
-  {
-    size_t i = (size_t)0;
-    while (i < len) {
-      *(dest + i) = val;
-      i ++;
-    }
-  }
-  return dest;
-}
-
-/*@ requires valid_wstring_src: valid_read_wstring(src);
-    requires room_wstring: \valid(dest + (0 .. wcslen(src)));
-    requires
-      separation:
-        \separated(dest + (0 .. wcslen(src)), src + (0 .. wcslen(src)));
-    ensures result_ptr: \result ≡ \old(dest);
-    assigns *(dest + (0 .. wcslen{Old}(src))), \result;
-    assigns *(dest + (0 .. wcslen{Old}(src)))
-      \from *(src + (0 .. wcslen{Old}(src))), (indirect: src);
-    assigns \result \from dest;
- */
-wchar_t *wcscpy(wchar_t *dest, wchar_t const *src)
-{
-  size_t i;
-  i = (size_t)0;
-  while (*(src + i) != 0L) {
-    *(dest + i) = *(src + i);
-    i ++;
-  }
-  *(dest + i) = 0L;
-  return dest;
-}
-
-/*@ requires valid_string_s: valid_read_wstring(str);
-    ensures result_is_length: \result ≡ wcslen(\old(str));
-    assigns \result;
-    assigns \result \from (indirect: *(str + (0 .. wcslen{Old}(str))));
- */
-size_t wcslen(wchar_t const *str)
-{
-  size_t i;
-  i = (size_t)0;
-  while (*(str + i) != 0L) i ++;
-  return i;
-}
-
-/*@ requires valid_wstring_src: valid_read_wstring(src);
-    requires room_nwstring: \valid(dest + (0 .. n - 1));
-    requires
-      separation: dest: src:
-        \separated(dest + (0 .. n - 1), src + (0 .. n - 1));
-    ensures result_ptr: \result ≡ \old(dest);
-    ensures initialization: \initialized(\old(dest) + (0 .. \old(n) - 1));
-    assigns *(dest + (0 .. n - 1)), \result;
-    assigns *(dest + (0 .. n - 1))
-      \from *(src + (0 .. n - 1)), (indirect: src), (indirect: n);
-    assigns \result \from dest;
- */
-wchar_t *wcsncpy(wchar_t *dest, wchar_t const *src, size_t n)
-{
-  size_t i;
-  i = (size_t)0;
-  while (i < n) {
-    *(dest + i) = *(src + i);
-    if (*(src + i) == 0L) break;
-    i ++;
-  }
-  while (i < n) {
-    *(dest + i) = 0L;
-    i ++;
-  }
-  return dest;
-}
-
-/*@ requires valid_wstring_src: valid_read_wstring(src);
-    requires valid_wstring_dest: valid_wstring(dest);
-    requires
-      room_for_concatenation:
-        \valid(dest + (wcslen(dest) .. wcslen(dest) + wcslen(src)));
-    requires
-      separation:
-        \separated(
-          dest + (0 .. wcslen(dest) + wcslen(src)), src + (0 .. wcslen(src))
-          );
-    ensures result_ptr: \result ≡ \old(dest);
-    assigns *(dest + (0 ..)), \result;
-    assigns *(dest + (0 ..))
-      \from *(dest + (0 ..)), (indirect: dest), *(src + (0 ..)),
-            (indirect: src);
-    assigns \result \from dest;
- */
-wchar_t *wcscat(wchar_t *dest, wchar_t const *src)
-{
-  size_t i;
-  size_t n = wcslen((wchar_t const *)dest);
-  i = (size_t)0;
-  while (*(src + i) != 0L) {
-    *(dest + (n + i)) = *(src + i);
-    i ++;
-  }
-  *(dest + (n + i)) = 0L;
-  return dest;
-}
-
-/*@ requires valid_nwstring_src: valid_read_nwstring(src, n);
-    requires valid_wstring_dest: valid_wstring(dest);
-    requires
-      room_for_concatenation:
-        \valid(dest + (wcslen(dest) .. wcslen(dest) + \min(wcslen(src), n)));
-    requires
-      separation:
-        \separated(
-          dest + (0 .. wcslen(dest) + wcslen(src)), src + (0 .. wcslen(src))
-          );
-    ensures result_ptr: \result ≡ \old(dest);
-    assigns *(dest + (0 ..)), \result;
-    assigns *(dest + (0 ..))
-      \from *(dest + (0 ..)), (indirect: dest), *(src + (0 .. n - 1)),
-            (indirect: src), (indirect: n);
-    assigns \result \from dest;
- */
-wchar_t *wcsncat(wchar_t *dest, wchar_t const *src, size_t n)
-{
-  size_t i;
-  size_t dest_len = wcslen((wchar_t const *)dest);
-  i = (size_t)0;
-  while (1) {
-    if (i < n) {
-      if (! (*(src + i) != 0L)) break;
-    }
-    else break;
-    *(dest + (dest_len + i)) = *(src + i);
-    i ++;
-  }
-  *(dest + (dest_len + i)) = 0L;
-  return dest;
-}
-
-/*@ requires valid_wstring: valid_read_wstring(ws);
-    assigns \result, __fc_heap_status;
-    assigns \result
-      \from (indirect: *(ws + (0 .. wcslen{Old}(ws)))),
-            (indirect: __fc_heap_status);
-    assigns __fc_heap_status
-      \from (indirect: *(ws + (0 .. wcslen{Old}(ws)))), __fc_heap_status;
-    allocates \result;
-    
-    behavior allocation:
-      assumes can_allocate: is_allocable(wcslen(ws));
-      ensures
-        allocation:
-          \fresh{Old, Here}(\result,wcslen(\old(ws)) * sizeof(wchar_t));
-      ensures
-        result_valid_string_and_same_contents:
-          valid_wstring(\result) ∧ wcscmp(\result, \old(ws)) ≡ 0;
-      assigns __fc_heap_status, \result;
-      assigns __fc_heap_status
-        \from (indirect: *(ws + (0 .. wcslen{Old}(ws)))), __fc_heap_status;
-      assigns \result
-        \from (indirect: *(ws + (0 .. wcslen{Old}(ws)))),
-              (indirect: __fc_heap_status);
-    
-    behavior no_allocation:
-      assumes cannot_allocate: ¬is_allocable(wcslen(ws));
-      ensures result_null: \result ≡ \null;
-      assigns \result;
-      assigns \result \from \nothing;
-      allocates \nothing;
- */
-wchar_t *wcsdup(wchar_t const *ws)
-{
-  wchar_t *__retres;
-  size_t tmp;
-  tmp = wcslen(ws);
-  size_t l = tmp + (size_t)1;
-  wchar_t *p = malloc(sizeof(wchar_t) * l);
-  if (! p) {
-    __fc_errno = 12;
-    __retres = (wchar_t *)0;
-    goto return_label;
-  }
-  wmemcpy(p,ws,l);
-  __retres = p;
-  return_label: return __retres;
-}
-
-/*@ ghost extern int __fc_stack_status; */
-
-/*@ ensures allocation: \fresh{Old, Here}(\result,\old(size));
-    assigns __fc_stack_status, \result;
-    assigns __fc_stack_status \from size, __fc_stack_status;
-    assigns \result \from (indirect: size), (indirect: __fc_stack_status);
-    allocates \result;
- */
-extern void *alloca(size_t size);
-
-DIR __fc_opendir[16];
-DIR * const __fc_p_opendir = __fc_opendir;
-/*@ requires
-      dirp_valid_dir_stream: \subset(dirp, &__fc_opendir[0 .. 16 - 1]);
-    ensures
-      err_or_closed_on_success:
-        (\result ≡ 0 ∧ \old(dirp)->__fc_dir_inode ≡ \null) ∨
-        \result ≡ -1;
-    assigns \result, __fc_errno, *dirp;
-    assigns \result \from dirp, *dirp, __fc_p_opendir;
-    assigns __fc_errno \from dirp, *dirp, __fc_p_opendir;
-    assigns *dirp \from dirp, *dirp, __fc_p_opendir;
- */
-extern int closedir(DIR *dirp);
-
-/*@ ensures result_null_or_valid: \result ≡ \null ∨ \valid(\result);
-    ensures
-      valid_dir_stream_on_success:
-        \result ≢ \null ⇒ \result ≡ &__fc_opendir[\result->__fc_dir_id];
-    ensures
-      stream_positioned_on_success:
-        \result ≢ \null ⇒ \result->__fc_dir_inode ≢ \null;
-    assigns \result, __fc_errno;
-    assigns \result \from *(path + (0 ..)), __fc_p_opendir;
-    assigns __fc_errno \from *(path + (0 ..)), __fc_p_opendir;
- */
-extern DIR *opendir(char const *path);
-
-/*@ requires
-      dirp_valid_dir_stream: \subset(dirp, &__fc_opendir[0 .. 16 - 1]);
-    ensures result_null_or_valid: \result ≡ \null ∨ \valid(\result);
-    assigns \result, dirp->__fc_dir_position, __fc_errno;
-    assigns \result \from *dirp, __fc_p_opendir;
-    assigns dirp->__fc_dir_position \from dirp->__fc_dir_position;
-    assigns __fc_errno \from dirp, *dirp, __fc_p_opendir;
- */
-extern struct dirent *readdir(DIR *dirp);
-
-/*@ requires
-      fmt_valid_read_or_null: valid_read_string(fmt) ∨ fmt ≡ \null;
-    ensures never_terminates: \false;
-    
-    assigns \exit_status \from eval;
- */
-void err(int eval, char const *fmt, void * const *__va_params);
-
-/*@ requires
-      fmt_valid_read_or_null: valid_read_string(fmt) ∨ fmt ≡ \null;
-    ensures never_terminates: \false;
-    
-    assigns \exit_status \from eval;
- */
-void errx(int eval, char const *fmt, void * const *__va_params);
-
-/*@ requires
-      fmt_valid_read_or_null: valid_read_string(fmt) ∨ fmt ≡ \null;
-    assigns \nothing;
- */
-void warn(char const *fmt, void * const *__va_params);
-
-/*@ requires
-      fmt_valid_read_or_null: valid_read_string(fmt) ∨ fmt ≡ \null;
-    assigns \nothing;
- */
-void warnx(char const *fmt, void * const *__va_params);
-
-/*@ requires
-      fmt_valid_read_or_null: valid_read_string(fmt) ∨ fmt ≡ \null;
-    ensures never_terminates: \false;
-    
-    assigns \exit_status \from eval;
- */
-void verr(int eval, char const *fmt, va_list args);
-
-/*@ requires
-      fmt_valid_read_or_null: valid_read_string(fmt) ∨ fmt ≡ \null;
-    ensures never_terminates: \false;
-    
-    assigns \exit_status \from eval;
- */
-void verrx(int eval, char const *fmt, va_list args);
-
-/*@ requires
-      fmt_valid_read_or_null: valid_read_string(fmt) ∨ fmt ≡ \null;
-    assigns \nothing;
- */
-void vwarn(char const *fmt, va_list args);
-
-/*@ requires
-      fmt_valid_read_or_null: valid_read_string(fmt) ∨ fmt ≡ \null;
-    assigns \nothing;
- */
-void vwarnx(char const *fmt, va_list args);
-
-/*@ requires valid_res: \valid(res);
-    ensures initialization: res: \initialized(\old(res));
-    ensures res_wrapped: *\old(res) ≡ (int)(\old(a) + \old(b));
-    ensures
-      result_overflow:
-        \old(a) + \old(b) ≡ (int)(\old(a) + \old(b))?
-          \result ≡ 0:
-          \result ≡ 1;
-    assigns \result, *res;
-    assigns \result \from a, b;
-    assigns *res \from a, b;
- */
-_Bool __builtin_sadd_overflow(int a, int b, int *res);
-
-/*@ requires valid_res: \valid(res);
-    ensures initialization: res: \initialized(\old(res));
-    ensures res_wrapped: *\old(res) ≡ (long)(\old(a) + \old(b));
-    ensures
-      result_overflow:
-        \old(a) + \old(b) ≡ (long)(\old(a) + \old(b))?
-          \result ≡ 0:
-          \result ≡ 1;
-    assigns \result, *res;
-    assigns \result \from a, b;
-    assigns *res \from a, b;
- */
-_Bool __builtin_saddl_overflow(long a, long b, long *res);
-
-/*@ requires valid_res: \valid(res);
-    ensures initialization: res: \initialized(\old(res));
-    ensures res_wrapped: *\old(res) ≡ (long long)(\old(a) + \old(b));
-    ensures
-      result_overflow:
-        \old(a) + \old(b) ≡ (long long)(\old(a) + \old(b))?
-          \result ≡ 0:
-          \result ≡ 1;
-    assigns \result, *res;
-    assigns \result \from a, b;
-    assigns *res \from a, b;
- */
-_Bool __builtin_saddll_overflow(long long a, long long b, long long *res);
-
-/*@ requires valid_res: \valid(res);
-    ensures initialization: res: \initialized(\old(res));
-    ensures res_wrapped: *\old(res) ≡ (unsigned int)(\old(a) + \old(b));
-    ensures
-      result_overflow:
-        \old(a) + \old(b) ≡ (unsigned int)(\old(a) + \old(b))?
-          \result ≡ 0:
-          \result ≡ 1;
-    assigns \result, *res;
-    assigns \result \from a, b;
-    assigns *res \from a, b;
- */
-_Bool __builtin_uadd_overflow(unsigned int a, unsigned int b,
-                              unsigned int *res);
-
-/*@ requires valid_res: \valid(res);
-    ensures initialization: res: \initialized(\old(res));
-    ensures res_wrapped: *\old(res) ≡ (unsigned long)(\old(a) + \old(b));
-    ensures
-      result_overflow:
-        \old(a) + \old(b) ≡ (unsigned long)(\old(a) + \old(b))?
-          \result ≡ 0:
-          \result ≡ 1;
-    assigns \result, *res;
-    assigns \result \from a, b;
-    assigns *res \from a, b;
- */
-_Bool __builtin_uaddl_overflow(unsigned long a, unsigned long b,
-                               unsigned long *res);
-
-/*@ requires valid_res: \valid(res);
-    ensures initialization: res: \initialized(\old(res));
-    ensures
-      res_wrapped: *\old(res) ≡ (unsigned long long)(\old(a) + \old(b));
-    ensures
-      result_overflow:
-        \old(a) + \old(b) ≡ (unsigned long long)(\old(a) + \old(b))?
-          \result ≡ 0:
-          \result ≡ 1;
-    assigns \result, *res;
-    assigns \result \from a, b;
-    assigns *res \from a, b;
- */
-_Bool __builtin_uaddll_overflow(unsigned long long a, unsigned long long b,
-                                unsigned long long *res);
-
-/*@ requires valid_res: \valid(res);
-    ensures initialization: res: \initialized(\old(res));
-    ensures res_wrapped: *\old(res) ≡ (int)(\old(a) - \old(b));
-    ensures
-      result_overflow:
-        \old(a) - \old(b) ≡ (int)(\old(a) - \old(b))?
-          \result ≡ 0:
-          \result ≡ 1;
-    assigns \result, *res;
-    assigns \result \from a, b;
-    assigns *res \from a, b;
- */
-_Bool __builtin_ssub_overflow(int a, int b, int *res);
-
-/*@ requires valid_res: \valid(res);
-    ensures initialization: res: \initialized(\old(res));
-    ensures res_wrapped: *\old(res) ≡ (long)(\old(a) - \old(b));
-    ensures
-      result_overflow:
-        \old(a) - \old(b) ≡ (long)(\old(a) - \old(b))?
-          \result ≡ 0:
-          \result ≡ 1;
-    assigns \result, *res;
-    assigns \result \from a, b;
-    assigns *res \from a, b;
- */
-_Bool __builtin_ssubl_overflow(long a, long b, long *res);
-
-/*@ requires valid_res: \valid(res);
-    ensures initialization: res: \initialized(\old(res));
-    ensures res_wrapped: *\old(res) ≡ (long long)(\old(a) - \old(b));
-    ensures
-      result_overflow:
-        \old(a) - \old(b) ≡ (long long)(\old(a) - \old(b))?
-          \result ≡ 0:
-          \result ≡ 1;
-    assigns \result, *res;
-    assigns \result \from a, b;
-    assigns *res \from a, b;
- */
-_Bool __builtin_ssubll_overflow(long long a, long long b, long long *res);
-
-/*@ requires valid_res: \valid(res);
-    ensures initialization: res: \initialized(\old(res));
-    ensures res_wrapped: *\old(res) ≡ (unsigned int)(\old(a) - \old(b));
-    ensures
-      result_overflow:
-        \old(a) - \old(b) ≡ (unsigned int)(\old(a) - \old(b))?
-          \result ≡ 0:
-          \result ≡ 1;
-    assigns \result, *res;
-    assigns \result \from a, b;
-    assigns *res \from a, b;
- */
-_Bool __builtin_usub_overflow(unsigned int a, unsigned int b,
-                              unsigned int *res);
-
-/*@ requires valid_res: \valid(res);
-    ensures initialization: res: \initialized(\old(res));
-    ensures res_wrapped: *\old(res) ≡ (unsigned long)(\old(a) - \old(b));
-    ensures
-      result_overflow:
-        \old(a) - \old(b) ≡ (unsigned long)(\old(a) - \old(b))?
-          \result ≡ 0:
-          \result ≡ 1;
-    assigns \result, *res;
-    assigns \result \from a, b;
-    assigns *res \from a, b;
- */
-_Bool __builtin_usubl_overflow(unsigned long a, unsigned long b,
-                               unsigned long *res);
-
-/*@ requires valid_res: \valid(res);
-    ensures initialization: res: \initialized(\old(res));
-    ensures
-      res_wrapped: *\old(res) ≡ (unsigned long long)(\old(a) - \old(b));
-    ensures
-      result_overflow:
-        \old(a) - \old(b) ≡ (unsigned long long)(\old(a) - \old(b))?
-          \result ≡ 0:
-          \result ≡ 1;
-    assigns \result, *res;
-    assigns \result \from a, b;
-    assigns *res \from a, b;
- */
-_Bool __builtin_usubll_overflow(unsigned long long a, unsigned long long b,
-                                unsigned long long *res);
-
-/*@ requires valid_res: \valid(res);
-    ensures initialization: res: \initialized(\old(res));
-    ensures res_wrapped: *\old(res) ≡ (int)(\old(a) * \old(b));
-    ensures
-      result_overflow:
-        \old(a) * \old(b) ≡ (int)(\old(a) * \old(b))?
-          \result ≡ 0:
-          \result ≡ 1;
-    assigns \result, *res;
-    assigns \result \from a, b;
-    assigns *res \from a, b;
- */
-_Bool __builtin_smul_overflow(int a, int b, int *res);
-
-/*@ requires valid_res: \valid(res);
-    ensures initialization: res: \initialized(\old(res));
-    ensures res_wrapped: *\old(res) ≡ (long)(\old(a) * \old(b));
-    ensures
-      result_overflow:
-        \old(a) * \old(b) ≡ (long)(\old(a) * \old(b))?
-          \result ≡ 0:
-          \result ≡ 1;
-    assigns \result, *res;
-    assigns \result \from a, b;
-    assigns *res \from a, b;
- */
-_Bool __builtin_smull_overflow(long a, long b, long *res);
-
-/*@ requires valid_res: \valid(res);
-    ensures initialization: res: \initialized(\old(res));
-    ensures res_wrapped: *\old(res) ≡ (long long)(\old(a) * \old(b));
-    ensures
-      result_overflow:
-        \old(a) * \old(b) ≡ (long long)(\old(a) * \old(b))?
-          \result ≡ 0:
-          \result ≡ 1;
-    assigns \result, *res;
-    assigns \result \from a, b;
-    assigns *res \from a, b;
- */
-_Bool __builtin_smulll_overflow(long long a, long long b, long long *res);
-
-/*@ requires valid_res: \valid(res);
-    ensures initialization: res: \initialized(\old(res));
-    ensures res_wrapped: *\old(res) ≡ (unsigned int)(\old(a) * \old(b));
-    ensures
-      result_overflow:
-        \old(a) * \old(b) ≡ (unsigned int)(\old(a) * \old(b))?
-          \result ≡ 0:
-          \result ≡ 1;
-    assigns \result, *res;
-    assigns \result \from a, b;
-    assigns *res \from a, b;
- */
-_Bool __builtin_umul_overflow(unsigned int a, unsigned int b,
-                              unsigned int *res);
-
-/*@ requires valid_res: \valid(res);
-    ensures initialization: res: \initialized(\old(res));
-    ensures res_wrapped: *\old(res) ≡ (unsigned long)(\old(a) * \old(b));
-    ensures
-      result_overflow:
-        \old(a) * \old(b) ≡ (unsigned long)(\old(a) * \old(b))?
-          \result ≡ 0:
-          \result ≡ 1;
-    assigns \result, *res;
-    assigns \result \from a, b;
-    assigns *res \from a, b;
- */
-_Bool __builtin_umull_overflow(unsigned long a, unsigned long b,
-                               unsigned long *res);
-
-/*@ requires valid_res: \valid(res);
-    ensures initialization: res: \initialized(\old(res));
-    ensures
-      res_wrapped: *\old(res) ≡ (unsigned long long)(\old(a) * \old(b));
-    ensures
-      result_overflow:
-        \old(a) * \old(b) ≡ (unsigned long long)(\old(a) * \old(b))?
-          \result ≡ 0:
-          \result ≡ 1;
-    assigns \result, *res;
-    assigns \result \from a, b;
-    assigns *res \from a, b;
- */
-_Bool __builtin_umulll_overflow(unsigned long long a, unsigned long long b,
-                                unsigned long long *res);
-
-/*@ requires x_nonzero: x ≢ 0;
-    ensures result_is_bit_count: 0 ≤ \result < 8 * sizeof(\old(x));
-    assigns \result;
-    assigns \result \from (indirect: x);
- */
-int __builtin_clz(unsigned int x);
-
-/*@ requires x_nonzero: x ≢ 0;
-    ensures result_is_bit_count: 0 ≤ \result < 8 * sizeof(\old(x));
-    assigns \result;
-    assigns \result \from (indirect: x);
- */
-int __builtin_clzl(unsigned long x);
-
-/*@ requires x_nonzero: x ≢ 0;
-    ensures result_is_bit_count: 0 ≤ \result < 8 * sizeof(\old(x));
-    assigns \result;
-    assigns \result \from (indirect: x);
- */
-int __builtin_clzll(unsigned long long x);
-
-/*@ requires x_nonzero: x ≢ 0;
-    ensures result_is_bit_count: 0 ≤ \result < 8 * sizeof(\old(x));
-    assigns \result;
-    assigns \result \from (indirect: x);
- */
-int __builtin_ctz(unsigned int x);
-
-/*@ requires x_nonzero: x ≢ 0;
-    ensures result_is_bit_count: 0 ≤ \result < 8 * sizeof(\old(x));
-    assigns \result;
-    assigns \result \from (indirect: x);
- */
-int __builtin_ctzl(unsigned long x);
-
-/*@ requires x_nonzero: x ≢ 0;
-    ensures result_is_bit_count: 0 ≤ \result < 8 * sizeof(\old(x));
-    assigns \result;
-    assigns \result \from (indirect: x);
- */
-int __builtin_ctzll(unsigned long long x);
-
-/*@ ensures result_is_bit_count: 0 ≤ \result ≤ 8 * sizeof(\old(x));
-    assigns \result;
-    assigns \result \from (indirect: x);
- */
-int __builtin_popcount(unsigned int x);
-
-/*@ ensures result_is_bit_count: 0 ≤ \result ≤ 8 * sizeof(\old(x));
-    assigns \result;
-    assigns \result \from (indirect: x);
- */
-int __builtin_popcountl(unsigned long x);
-
-/*@ ensures result_is_bit_count: 0 ≤ \result ≤ 8 * sizeof(\old(x));
-    assigns \result;
-    assigns \result \from (indirect: x);
- */
-int __builtin_popcountll(unsigned long long x);
-
-/*@ requires validity: \valid_read(mem);
-    requires initialization: \initialized(mem);
-    ensures load_value: \result ≡ *\old(mem);
-    assigns \result;
-    assigns \result \from *mem, (indirect: model);
- */
-unsigned char __atomic_load_1(unsigned char const *mem, int model);
-
-/*@ requires validity: \valid_read(mem);
-    requires initialization: \initialized(mem);
-    ensures load_value: \result ≡ *\old(mem);
-    assigns \result;
-    assigns \result \from *mem, (indirect: model);
- */
-unsigned short __atomic_load_2(unsigned short const *mem, int model);
-
-/*@ requires validity: \valid_read(mem);
-    requires initialization: \initialized(mem);
-    ensures load_value: \result ≡ *\old(mem);
-    assigns \result;
-    assigns \result \from *mem, (indirect: model);
- */
-unsigned int __atomic_load_4(unsigned int const *mem, int model);
-
-/*@ requires validity: \valid_read(mem);
-    requires initialization: \initialized(mem);
-    ensures load_value: \result ≡ *\old(mem);
-    assigns \result;
-    assigns \result \from *mem, (indirect: model);
- */
-unsigned long long __atomic_load_8(unsigned long long const *mem, int model);
-
-/*@ requires validity: \valid(mem);
-    ensures initialization: \initialized(\old(mem));
-    ensures store_value: *\old(mem) ≡ \old(val);
-    assigns *mem;
-    assigns *mem \from val, (indirect: model);
- */
-void __atomic_store_1(unsigned char *mem, unsigned char val, int model);
-
-/*@ requires validity: \valid(mem);
-    ensures initialization: \initialized(\old(mem));
-    ensures store_value: *\old(mem) ≡ \old(val);
-    assigns *mem;
-    assigns *mem \from val, (indirect: model);
- */
-void __atomic_store_2(unsigned short *mem, unsigned short val, int model);
-
-/*@ requires validity: \valid(mem);
-    ensures initialization: \initialized(\old(mem));
-    ensures store_value: *\old(mem) ≡ \old(val);
-    assigns *mem;
-    assigns *mem \from val, (indirect: model);
- */
-void __atomic_store_4(unsigned int *mem, unsigned int val, int model);
-
-/*@ requires validity: \valid(mem);
-    ensures initialization: \initialized(\old(mem));
-    ensures store_value: *\old(mem) ≡ \old(val);
-    assigns *mem;
-    assigns *mem \from val, (indirect: model);
- */
-void __atomic_store_8(unsigned long long *mem, unsigned long long val,
-                      int model);
-
-/*@ requires validity: \valid(mem);
-    requires initialization: \initialized(mem);
-    assigns *mem, \result;
-    assigns *mem \from val, (indirect: model);
-    assigns \result \from *mem, (indirect: model);
- */
-unsigned char __atomic_exchange_1(unsigned char *mem, unsigned char val,
-                                  int model);
-
-/*@ requires validity: \valid(mem);
-    requires initialization: \initialized(mem);
-    assigns *mem, \result;
-    assigns *mem \from val, (indirect: model);
-    assigns \result \from *mem, (indirect: model);
- */
-unsigned short __atomic_exchange_2(unsigned short *mem, unsigned short val,
-                                   int model);
-
-/*@ requires validity: \valid(mem);
-    requires initialization: \initialized(mem);
-    assigns *mem, \result;
-    assigns *mem \from val, (indirect: model);
-    assigns \result \from *mem, (indirect: model);
- */
-unsigned int __atomic_exchange_4(unsigned int *mem, unsigned int val,
-                                 int model);
-
-/*@ requires validity: \valid(mem);
-    requires initialization: \initialized(mem);
-    assigns *mem, \result;
-    assigns *mem \from val, (indirect: model);
-    assigns \result \from *mem, (indirect: model);
- */
-unsigned long long __atomic_exchange_8(unsigned long long *mem,
-                                       unsigned long long val, int model);
-
-/*@ requires validity: \valid(mem) ∧ \valid(expected);
-    requires initialization: mem: \initialized(mem);
-    requires initialization: expected: \initialized(expected);
-    assigns *mem, *expected, \result;
-    assigns *mem
-      \from *mem, desired, (indirect: *expected), (indirect: success_model),
-            (indirect: weak);
-    assigns *expected
-      \from *expected, *mem, (indirect: desired), (indirect: failure_model),
-            (indirect: weak);
-    assigns \result \from (indirect: *mem), (indirect: *expected);
- */
-_Bool __atomic_compare_exchange_1(unsigned char *mem,
-                                  unsigned char *expected,
-                                  unsigned char desired, _Bool weak,
-                                  int success_model, int failure_model);
-
-/*@ requires validity: \valid(mem) ∧ \valid(expected);
-    requires initialization: mem: \initialized(mem);
-    requires initialization: expected: \initialized(expected);
-    assigns *mem, *expected, \result;
-    assigns *mem
-      \from *mem, desired, (indirect: *expected), (indirect: success_model),
-            (indirect: weak);
-    assigns *expected
-      \from *expected, *mem, (indirect: desired), (indirect: failure_model),
-            (indirect: weak);
-    assigns \result \from (indirect: *mem), (indirect: *expected);
- */
-_Bool __atomic_compare_exchange_2(unsigned short *mem,
-                                  unsigned short *expected,
-                                  unsigned short desired, _Bool weak,
-                                  int success_model, int failure_model);
-
-/*@ requires validity: \valid(mem) ∧ \valid(expected);
-    requires initialization: mem: \initialized(mem);
-    requires initialization: expected: \initialized(expected);
-    assigns *mem, *expected, \result;
-    assigns *mem
-      \from *mem, desired, (indirect: *expected), (indirect: success_model),
-            (indirect: weak);
-    assigns *expected
-      \from *expected, *mem, (indirect: desired), (indirect: failure_model),
-            (indirect: weak);
-    assigns \result \from (indirect: *mem), (indirect: *expected);
- */
-_Bool __atomic_compare_exchange_4(unsigned int *mem, unsigned int *expected,
-                                  unsigned int desired, _Bool weak,
-                                  int success_model, int failure_model);
-
-/*@ requires validity: \valid(mem) ∧ \valid(expected);
-    requires initialization: mem: \initialized(mem);
-    requires initialization: expected: \initialized(expected);
-    assigns *mem, *expected, \result;
-    assigns *mem
-      \from *mem, desired, (indirect: *expected), (indirect: success_model),
-            (indirect: weak);
-    assigns *expected
-      \from *expected, *mem, (indirect: desired), (indirect: failure_model),
-            (indirect: weak);
-    assigns \result \from (indirect: *mem), (indirect: *expected);
- */
-_Bool __atomic_compare_exchange_8(unsigned long long *mem,
-                                  unsigned long long *expected,
-                                  unsigned long long desired, _Bool weak,
-                                  int success_model, int failure_model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned char __atomic_add_fetch_1(unsigned char *ptr, unsigned char val,
-                                   int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned char __atomic_sub_fetch_1(unsigned char *ptr, unsigned char val,
-                                   int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned char __atomic_and_fetch_1(unsigned char *ptr, unsigned char val,
-                                   int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned char __atomic_xor_fetch_1(unsigned char *ptr, unsigned char val,
-                                   int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned char __atomic_or_fetch_1(unsigned char *ptr, unsigned char val,
-                                  int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned char __atomic_nand_fetch_1(unsigned char *ptr, unsigned char val,
-                                    int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned short __atomic_add_fetch_2(unsigned short *ptr, unsigned short val,
-                                    int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned short __atomic_sub_fetch_2(unsigned short *ptr, unsigned short val,
-                                    int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned short __atomic_and_fetch_2(unsigned short *ptr, unsigned short val,
-                                    int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned short __atomic_xor_fetch_2(unsigned short *ptr, unsigned short val,
-                                    int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned short __atomic_or_fetch_2(unsigned short *ptr, unsigned short val,
-                                   int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned short __atomic_nand_fetch_2(unsigned short *ptr, unsigned short val,
-                                     int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned int __atomic_add_fetch_4(unsigned int *ptr, unsigned int val,
-                                  int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned int __atomic_sub_fetch_4(unsigned int *ptr, unsigned int val,
-                                  int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned int __atomic_and_fetch_4(unsigned int *ptr, unsigned int val,
-                                  int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned int __atomic_xor_fetch_4(unsigned int *ptr, unsigned int val,
-                                  int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned int __atomic_or_fetch_4(unsigned int *ptr, unsigned int val,
-                                 int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned int __atomic_nand_fetch_4(unsigned int *ptr, unsigned int val,
-                                   int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned long long __atomic_add_fetch_8(unsigned long long *ptr,
-                                        unsigned long long val, int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned long long __atomic_sub_fetch_8(unsigned long long *ptr,
-                                        unsigned long long val, int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned long long __atomic_and_fetch_8(unsigned long long *ptr,
-                                        unsigned long long val, int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned long long __atomic_xor_fetch_8(unsigned long long *ptr,
-                                        unsigned long long val, int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned long long __atomic_or_fetch_8(unsigned long long *ptr,
-                                       unsigned long long val, int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned long long __atomic_nand_fetch_8(unsigned long long *ptr,
-                                         unsigned long long val, int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned char __atomic_fetch_add_1(unsigned char *ptr, unsigned char val,
-                                   int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned char __atomic_fetch_sub_1(unsigned char *ptr, unsigned char val,
-                                   int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned char __atomic_fetch_and_1(unsigned char *ptr, unsigned char val,
-                                   int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned char __atomic_fetch_xor_1(unsigned char *ptr, unsigned char val,
-                                   int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned char __atomic_fetch_or_1(unsigned char *ptr, unsigned char val,
-                                  int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned char __atomic_fetch_nand_1(unsigned char *ptr, unsigned char val,
-                                    int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned short __atomic_fetch_add_2(unsigned short *ptr, unsigned short val,
-                                    int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned short __atomic_fetch_sub_2(unsigned short *ptr, unsigned short val,
-                                    int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned short __atomic_fetch_and_2(unsigned short *ptr, unsigned short val,
-                                    int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned short __atomic_fetch_xor_2(unsigned short *ptr, unsigned short val,
-                                    int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned short __atomic_fetch_or_2(unsigned short *ptr, unsigned short val,
-                                   int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned short __atomic_fetch_nand_2(unsigned short *ptr, unsigned short val,
-                                     int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned int __atomic_fetch_add_4(unsigned int *ptr, unsigned int val,
-                                  int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned int __atomic_fetch_sub_4(unsigned int *ptr, unsigned int val,
-                                  int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned int __atomic_fetch_and_4(unsigned int *ptr, unsigned int val,
-                                  int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned int __atomic_fetch_xor_4(unsigned int *ptr, unsigned int val,
-                                  int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned int __atomic_fetch_or_4(unsigned int *ptr, unsigned int val,
-                                 int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned int __atomic_fetch_nand_4(unsigned int *ptr, unsigned int val,
-                                   int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned long long __atomic_fetch_add_8(unsigned long long *ptr,
-                                        unsigned long long val, int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned long long __atomic_fetch_sub__8(unsigned long long *ptr,
-                                         unsigned long long val, int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned long long __atomic_fetch_and_8(unsigned long long *ptr,
-                                        unsigned long long val, int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned long long __atomic_fetch_xor_8(unsigned long long *ptr,
-                                        unsigned long long val, int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned long long __atomic_fetch_or_8(unsigned long long *ptr,
-                                       unsigned long long val, int model);
-
-/*@ requires validity: \valid(ptr);
-    requires initialization: \initialized(ptr);
-    assigns \result, *ptr;
-    assigns \result \from *ptr, val, (indirect: model);
-    assigns *ptr \from *ptr, val, (indirect: model);
- */
-unsigned long long __atomic_fetch_nand_8(unsigned long long *ptr,
-                                         unsigned long long val, int model);
-
-/*@ requires validity: \valid((char *)ptr);
-    assigns \result, *((char *)ptr);
-    assigns \result \from *((char *)ptr);
-    assigns *((char *)ptr) \from \nothing;
- */
-_Bool __atomic_test_and_set(void *ptr, int model);
-
-/*@ requires validity: \valid(ptr);
-    assigns *ptr;
-    assigns *ptr \from \nothing;
- */
-void __atomic_clear(_Bool *ptr, int model);
-
-/*@ assigns \nothing; */
-void __atomic_thread_fence(int model);
-
-/*@ assigns \nothing; */
-void __atomic_signal_fence(int model);
-
-/*@ assigns \result;
-    assigns \result \from (indirect: size), (indirect: ptr);
- */
-_Bool __atomic_always_lock_free(unsigned int size, void *ptr);
-
-/*@ assigns \result;
-    assigns \result \from (indirect: size), (indirect: ptr);
- */
-_Bool __atomic_is_lock_free(unsigned int size, void *ptr);
-
-/*@ assigns \nothing; */
-void __sync_synchronize(void);
-
-/*@ logic 𝔹 bit_test(ℤ x, ℤ pos) = (x & 1 << pos) ≢ 0;
-
-*/
-/*@ requires valid_filename: valid_read_string(filename);
-    assigns \result;
-    assigns \result \from (indirect: *(filename + (0 ..))), (indirect: mode);
- */
-extern int creat(char const *filename, mode_t mode);
-
-/*@ assigns \result;
-    assigns \result \from fd, cmd; */
-extern int fcntl(int fd, int cmd, void * const *__va_params);
-
-/*@ requires valid_filename: valid_read_string(filename);
-    ensures valid_fd_or_error: \result ≡ -1 ∨ (0 ≤ \result < 1024);
-    assigns \result;
-    assigns \result
-      \from (indirect: *(filename + (0 ..))), (indirect: flags);
- */
-extern int open(char const *filename, int flags, void * const *__va_params);
-
-/*@ requires valid_filename: valid_read_string(filename);
-    ensures valid_fd_or_error: \result ≡ -1 ∨ (0 ≤ \result < 1024);
-    assigns \result;
-    assigns \result
-      \from (indirect: dirfd), (indirect: *(filename + (0 ..))),
-            (indirect: flags);
- */
-extern int openat(int dirfd, char const *filename, int flags,
-                  void * const *__va_params);
-
-/*@ requires cmd_has_void_arg: cmd ≡ 1 ∨ cmd ≡ 3 ∨ cmd ≡ 9;
-    assigns \result;
-    assigns \result \from fd, cmd;
- */
-extern int __va_fcntl_void(int fd, int cmd);
-
-/*@ requires
-      cmd_has_int_arg:
-        cmd ≡ 0 ∨ cmd ≡ 0x406 ∨ cmd ≡ 4 ∨ cmd ≡ 8 ∨ cmd ≡ 2;
-    assigns \result;
-    assigns \result \from fd, cmd, arg;
- */
-extern int __va_fcntl_int(int fd, int cmd, int arg);
-
-/*@ requires cmd_as_flock_arg: cmd ≡ 5 ∨ cmd ≡ 6 ∨ cmd ≡ 7;
-    requires valid_arg: \valid(arg);
-    assigns \result, *arg;
-    assigns \result \from fd, cmd, *arg;
-    assigns *arg \from fd, cmd, *arg;
- */
-extern int __va_fcntl_flock(int fd, int cmd, struct flock *arg);
-
-/*@ requires valid_filename: valid_read_string(filename);
-    requires flag_not_CREAT: (flags & 0x40) ≡ 0;
-    ensures valid_fd_or_error: \result ≡ -1 ∨ (0 ≤ \result < 1024);
-    assigns \result;
-    assigns \result
-      \from (indirect: *(filename + (0 ..))), (indirect: flags);
- */
-extern int __va_open_void(char const *filename, int flags);
-
-/*@ requires valid_filename: valid_read_string(filename);
-    ensures valid_fd_or_error: \result ≡ -1 ∨ (0 ≤ \result < 1024);
-    assigns \result;
-    assigns \result
-      \from (indirect: *(filename + (0 ..))), (indirect: flags),
-            (indirect: mode);
- */
-extern int __va_open_mode_t(char const *filename, int flags, mode_t mode);
-
-/*@ requires valid_filename: valid_read_string(filename);
-    requires flag_not_CREAT: (flags & 0x40) ≡ 0;
-    ensures valid_fd_or_error: \result ≡ -1 ∨ (0 ≤ \result < 1024);
-    assigns \result;
-    assigns \result
-      \from (indirect: dirfd), (indirect: *(filename + (0 ..))),
-            (indirect: flags);
- */
-extern int __va_openat_void(int dirfd, char const *filename, int flags);
-
-/*@ requires valid_filename: valid_read_string(filename);
-    ensures valid_fd_or_error: \result ≡ -1 ∨ (0 ≤ \result < 1024);
-    assigns \result;
-    assigns \result
-      \from (indirect: dirfd), (indirect: *(filename + (0 ..))),
-            (indirect: flags), (indirect: mode);
- */
-extern int __va_openat_mode_t(int dirfd, char const *filename, int flags,
-                              mode_t mode);
-
-/*@ ghost int volatile __fc_fds_state; */
-/*@ requires nfds: nfds ≥ 0;
-    requires readfs: readfds ≡ \null ∨ \valid(readfds);
-    requires writefds: writefds ≡ \null ∨ \valid(writefds);
-    requires errorfds: errorfds ≡ \null ∨ \valid(errorfds);
-    requires timeout: timeout ≡ \null ∨ \valid(timeout);
-    assigns __fc_fds_state, *readfds, *writefds, *errorfds, *timeout,
-            \result;
-    assigns __fc_fds_state \from __fc_fds_state;
-    assigns *readfds
-      \from (indirect: nfds), (indirect: readfds), (indirect: *readfds),
-            (indirect: writefds), (indirect: *writefds),
-            (indirect: errorfds), (indirect: *errorfds), (indirect: timeout),
-            (indirect: *timeout), __fc_fds_state;
-    assigns *writefds
-      \from (indirect: nfds), (indirect: readfds), (indirect: *readfds),
-            (indirect: writefds), (indirect: *writefds),
-            (indirect: errorfds), (indirect: *errorfds), (indirect: timeout),
-            (indirect: *timeout), __fc_fds_state;
-    assigns *errorfds
-      \from (indirect: nfds), (indirect: readfds), (indirect: *readfds),
-            (indirect: writefds), (indirect: *writefds),
-            (indirect: errorfds), (indirect: *errorfds), (indirect: timeout),
-            (indirect: *timeout), __fc_fds_state;
-    assigns *timeout
-      \from (indirect: nfds), (indirect: readfds), (indirect: *readfds),
-            (indirect: writefds), (indirect: *writefds),
-            (indirect: errorfds), (indirect: *errorfds), (indirect: timeout),
-            (indirect: *timeout), __fc_fds_state;
-    assigns \result
-      \from (indirect: nfds), (indirect: readfds), (indirect: *readfds),
-            (indirect: writefds), (indirect: *writefds),
-            (indirect: errorfds), (indirect: *errorfds), (indirect: timeout),
-            (indirect: *timeout), __fc_fds_state;
-    
-    behavior read_notnull:
-      assumes readfds_is_not_null: readfds ≢ \null;
-      ensures initialization: readfds: \initialized(\old(readfds));
-    
-    behavior write_notnull:
-      assumes writefds_is_not_null: writefds ≢ \null;
-      ensures initialization: writefds: \initialized(\old(writefds));
-    
-    behavior error_notnull:
-      assumes errorfds_is_not_null: errorfds ≢ \null;
-      ensures initialization: errorfds: \initialized(\old(errorfds));
-    
-    behavior timeout_notnull:
-      assumes timeout_is_not_null: timeout ≢ \null;
-      ensures initialization: timeout: \initialized(\old(timeout));
- */
-extern int select(int nfds, fd_set *readfds, fd_set *writefds,
-                  fd_set *errorfds, struct timeval *timeout);
-
-/*@ requires valid_path: valid_read_string(path);
-    ensures
-      errno_set:
-        __fc_errno ≡ \old(__fc_errno) ∨
-        __fc_errno ∈ {13, 4, 22, 40, 36, 2, 20, 1, 30};
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result, __fc_errno;
-    assigns \result
-      \from (indirect: path), (indirect: *(path + (0 .. strlen{Old}(path)))),
-            (indirect: mode);
-    assigns __fc_errno
-      \from (indirect: path), (indirect: *(path + (0 .. strlen{Old}(path)))),
-            (indirect: mode);
- */
-extern int chmod(char const *path, mode_t mode);
-
-/*@ requires valid_path: valid_read_string(path);
-    ensures
-      errno_set:
-        __fc_errno ≡ \old(__fc_errno) ∨
-        __fc_errno ∈ {13, 9, 4, 22, 40, 36, 2, 20, 95, 1, 30};
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result, __fc_errno;
-    assigns \result
-      \from (indirect: fd), (indirect: path),
-            (indirect: *(path + (0 .. strlen{Old}(path)))), (indirect: mode),
-            (indirect: flag);
-    assigns __fc_errno
-      \from (indirect: fd), (indirect: path),
-            (indirect: *(path + (0 .. strlen{Old}(path)))), (indirect: mode),
-            (indirect: flag);
- */
-extern int fchmodat(int fd, char const *path, mode_t mode, int flag);
-
-/*@ ensures
-      errno_set:
-        __fc_errno ≡ \old(__fc_errno) ∨ __fc_errno ∈ {9, 4, 22, 1, 30};
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result, __fc_errno;
-    assigns \result \from (indirect: fildes), (indirect: mode);
-    assigns __fc_errno \from (indirect: fildes), (indirect: mode);
- */
-extern int fchmod(int fildes, mode_t mode);
-
-/*@ requires valid_buf: \valid(buf);
-    ensures
-      errno_set:
-        __fc_errno ≡ \old(__fc_errno) ∨ __fc_errno ∈ {9, 5, 75};
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result, *buf, __fc_errno;
-    assigns \result \from (indirect: fildes);
-    assigns *buf \from (indirect: fildes);
-    assigns __fc_errno \from (indirect: fildes);
- */
-extern int fstat(int fildes, struct stat *buf);
-
-/*@ requires valid_path: valid_read_string(path);
-    requires valid_buf: \valid(buf);
-    ensures
-      errno_set:
-        __fc_errno ≡ \old(__fc_errno) ∨
-        __fc_errno ∈ {13, 9, 22, 5, 40, 36, 2, 12, 20, 75};
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result, *buf, __fc_errno;
-    assigns \result
-      \from (indirect: fd), (indirect: path),
-            (indirect: *(path + (0 .. strlen{Old}(path)))), (indirect: flag);
-    assigns *buf
-      \from (indirect: fd), (indirect: path),
-            (indirect: *(path + (0 .. strlen{Old}(path)))), (indirect: flag);
-    assigns __fc_errno
-      \from (indirect: fd), (indirect: path),
-            (indirect: *(path + (0 .. strlen{Old}(path)))), (indirect: flag);
- */
-extern int fstatat(int fd, char const * restrict path,
-                   struct stat * restrict buf, int flag);
-
-/*@ requires valid_path: valid_read_string(path);
-    requires valid_buf: \valid(buf);
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result, *buf;
-    assigns \result
-      \from (indirect: path), (indirect: *(path + (0 .. strlen{Old}(path))));
-    assigns *buf
-      \from (indirect: path), (indirect: *(path + (0 .. strlen{Old}(path))));
- */
-extern int lstat(char const *path, struct stat *buf);
-
-/*@ requires valid_path: valid_read_string(path);
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result;
-    assigns \result
-      \from (indirect: path), (indirect: *(path + (0 .. strlen{Old}(path)))),
-            (indirect: mode);
- */
-extern int mkdir(char const *path, mode_t mode);
-
-/*@ requires valid_path: valid_read_string(path);
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result;
-    assigns \result
-      \from (indirect: path), (indirect: *(path + (0 .. strlen{Old}(path)))),
-            (indirect: mode);
- */
-extern int mkfifo(char const *path, mode_t mode);
-
-/*@ requires valid_path: valid_read_string(path);
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result;
-    assigns \result
-      \from (indirect: path), (indirect: *(path + (0 .. strlen{Old}(path)))),
-            (indirect: mode), (indirect: dev);
- */
-extern int mknod(char const *path, mode_t mode, dev_t dev);
-
-/*@ requires valid_pathname: valid_read_string(pathname);
-    requires valid_buf: \valid(buf);
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    ensures
-      init_on_success: initialization: buf:
-        \result ≡ 0 ⇒ \initialized(\old(buf));
-    assigns \result, *buf;
-    assigns \result \from *(pathname + (0 .. strlen{Old}(pathname)));
-    assigns *buf \from *(pathname + (0 .. strlen{Old}(pathname)));
- */
-extern int stat(char const *pathname, struct stat *buf);
-
-/*@ assigns \result;
-    assigns \result \from (indirect: cmask); */
-extern mode_t umask(mode_t cmask);
-
-/*@ assigns \result, *optarg, optind, opterr, optopt,
-            *((longopts + (0 ..))->flag);
-    assigns \result
-      \from argc, *(argv + (0 .. argc - 1)), *(shortopts + (0 ..)),
-            *(longopts + (0 ..));
-    assigns *optarg
-      \from argc, *(argv + (0 .. argc - 1)), *(shortopts + (0 ..)),
-            *(longopts + (0 ..));
-    assigns optind
-      \from argc, *(argv + (0 .. argc - 1)), *(shortopts + (0 ..)),
-            *(longopts + (0 ..));
-    assigns opterr
-      \from argc, *(argv + (0 .. argc - 1)), *(shortopts + (0 ..)),
-            *(longopts + (0 ..));
-    assigns optopt
-      \from argc, *(argv + (0 .. argc - 1)), *(shortopts + (0 ..)),
-            *(longopts + (0 ..));
-    assigns *((longopts + (0 ..))->flag)
-      \from argc, *(argv + (0 .. argc - 1)), *(shortopts + (0 ..)),
-            *(longopts + (0 ..));
- */
-extern int getopt_long(int argc, char * const *argv, char const *shortopts,
-                       struct option const *longopts, int *longind);
-
-/*@ assigns \result, *optarg, optind, opterr, optopt,
-            *((longopts + (0 ..))->flag);
-    assigns \result
-      \from argc, *(argv + (0 .. argc - 1)), *(shortopts + (0 ..)),
-            *(longopts + (0 ..));
-    assigns *optarg
-      \from argc, *(argv + (0 .. argc - 1)), *(shortopts + (0 ..)),
-            *(longopts + (0 ..));
-    assigns optind
-      \from argc, *(argv + (0 .. argc - 1)), *(shortopts + (0 ..)),
-            *(longopts + (0 ..));
-    assigns opterr
-      \from argc, *(argv + (0 .. argc - 1)), *(shortopts + (0 ..)),
-            *(longopts + (0 ..));
-    assigns optopt
-      \from argc, *(argv + (0 .. argc - 1)), *(shortopts + (0 ..)),
-            *(longopts + (0 ..));
-    assigns *((longopts + (0 ..))->flag)
-      \from argc, *(argv + (0 .. argc - 1)), *(shortopts + (0 ..)),
-            *(longopts + (0 ..));
- */
-extern int getopt_long_only(int argc, char * const *argv,
-                            char const *shortopts,
-                            struct option const *longopts, int *longind);
-
-/*@ assigns *(*(outbuf + (0 .. *outbytesleft - 1))), __fc_errno;
-    assigns *(*(outbuf + (0 .. *outbytesleft - 1)))
-      \from *(*(inbuf + (0 .. *inbytesleft - 1)));
- */
-extern size_t iconv(iconv_t cd, char ** restrict inbuf,
-                    size_t * restrict inbytesleft, char ** restrict outbuf,
-                    size_t * restrict outbytesleft);
-
-/*@ ensures result_zero_or_neg: \result ≡ 0 ∨ \result ≡ -1;
-    assigns __fc_errno;
- */
-extern int iconv_close(iconv_t __x0);
-
-/*@ assigns \result, __fc_errno;
-    assigns \result \from *(tocode + (..)), *(fromcode + (..));
- */
-extern iconv_t iconv_open(char const *tocode, char const *fromcode);
-
-extern char __fc_basename[4096];
-
-char *__fc_p_basename = __fc_basename;
-/*@ requires
-      null_or_valid_string_path: path ≡ \null ∨ valid_read_string(path);
-    ensures
-      result_points_to_internal_storage_or_path:
-        \subset(\result, {__fc_p_basename, \old(path)});
-    assigns *(path + (0 ..)), __fc_basename[0 ..], \result;
-    assigns *(path + (0 ..)) \from *(path + (0 ..)), __fc_basename[0 ..];
-    assigns __fc_basename[0 ..] \from *(path + (0 ..)), __fc_basename[0 ..];
-    assigns \result \from __fc_p_basename, path;
- */
-extern char *basename(char *path);
-
-extern char __fc_dirname[4096];
-
-char *__fc_p_dirname = __fc_dirname;
-/*@ requires
-      null_or_valid_string_path: path ≡ \null ∨ valid_read_string(path);
-    ensures
-      result_points_to_internal_storage_or_path:
-        \subset(\result, {__fc_p_dirname, \old(path)});
-    assigns *(path + (0 ..)), __fc_dirname[0 ..], \result;
-    assigns *(path + (0 ..)) \from *(path + (0 ..)), __fc_dirname[0 ..];
-    assigns __fc_dirname[0 ..] \from *(path + (0 ..)), __fc_dirname[0 ..];
-    assigns \result \from __fc_p_dirname, path;
- */
-extern char *dirname(char *path);
-
-/*@ requires valid_file_descriptors: \valid(fds + (0 .. nfds - 1));
-    ensures
-      error_timeout_or_bounded:
-        \result ≡ -1 ∨ \result ≡ 0 ∨ (1 ≤ \result ≤ \old(nfds));
-    ensures
-      initialization: revents:
-        \initialized(&(\old(fds) + (0 .. \old(nfds) - 1))->revents);
-    assigns (fds + (0 .. nfds - 1))->revents, \result;
-    assigns (fds + (0 .. nfds - 1))->revents
-      \from (indirect: (fds + (0 .. nfds - 1))->fd),
-            (fds + (0 .. nfds - 1))->events, (indirect: nfds),
-            (indirect: timeout), (indirect: Frama_C_entropy_source);
-    assigns \result
-      \from (indirect: (fds + (0 .. nfds - 1))->fd),
-            (indirect: (fds + (0 .. nfds - 1))->events), (indirect: nfds),
-            (indirect: timeout), (indirect: Frama_C_entropy_source);
- */
-extern int poll(struct pollfd *fds, nfds_t nfds, int timeout);
-
-/*@ requires valid_cond: \valid(cond);
-    ensures sucess: \result ≡ 0;
-    assigns \result;
-    assigns \result \from \nothing;
- */
-extern int pthread_cond_broadcast(pthread_cond_t *cond);
-
-/*@ requires valid_cond: \valid(cond);
-    ensures success_or_error: \result ≡ 0 ∨ \result ≡ 16;
-    assigns \result;
-    assigns \result \from (indirect: *cond);
- */
-extern int pthread_cond_destroy(pthread_cond_t *cond);
-
-/*@ requires valid_cond: \valid(cond);
-    requires valid_null_attr: attr ≡ \null ∨ \valid_read(attr);
-    ensures initialization: cond: \initialized(\old(cond));
-    ensures success: \result ≡ 0;
-    assigns *cond, \result;
-    assigns *cond \from *attr;
-    assigns \result \from \nothing;
- */
-extern int pthread_cond_init(pthread_cond_t * restrict cond,
-                             pthread_condattr_t const * restrict attr);
-
-/*@ requires valid_cond: \valid(cond);
-    requires valid_mutex: \valid(mutex);
-    ensures success: \result ≡ 0;
-    assigns \result;
-    assigns \result \from \nothing;
- */
-extern int pthread_cond_wait(pthread_cond_t * restrict cond,
-                             pthread_mutex_t * restrict mutex);
-
-/*@ requires valid_thread: \valid(thread);
-    requires valid_null_attr: attr ≡ \null ∨ \valid_read(attr);
-    requires valid_routine: \valid_function(start_routine);
-    requires valid_null_arg: arg ≡ \null ∨ \valid((char *)arg);
-    ensures
-      initialization: success_or_error:
-        (\result ≡ 0 ∧ \initialized(\old(thread))) ∨ \result ≡ 11 ∨
-        \result ≡ 22 ∨ \result ≡ 1;
-    assigns *thread, \result;
-    assigns *thread \from *attr;
-    assigns \result \from (indirect: *attr);
- */
-extern int pthread_create(pthread_t * restrict thread,
-                          pthread_attr_t const * restrict attr,
-                          void *(*start_routine)(void *), void * restrict arg);
-
-/*@ requires valid_or_null_retval: retval ≡ \null ∨ \valid(retval);
-    ensures
-      success_or_error:
-        \result ≡ 0 ∨ \result ≡ 35 ∨ \result ≡ 22 ∨ \result ≡ 3;
-    assigns *retval, \result;
-    assigns *retval \from thread;
-    assigns \result \from (indirect: thread);
-    
-    behavior ignore_retval:
-      assumes null_retval: retval ≡ \null;
-      assigns \result;
-      assigns \result \from (indirect: thread);
-    
-    behavior use_retval:
-      assumes valid_retval: \valid(retval);
-      assigns *retval, \result;
-      assigns *retval \from thread;
-      assigns \result \from (indirect: thread);
- */
-extern int pthread_join(pthread_t thread, void **retval);
-
-/*@ requires mutex_valid: \valid(mutex);
-    ensures init_or_busy: \result ≡ 0 ∨ \result ≡ 16;
-    assigns *mutex, \result;
-    assigns *mutex \from *mutex;
-    assigns \result \from (indirect: *mutex);
- */
-extern int pthread_mutex_destroy(pthread_mutex_t *mutex);
-
-/*@ requires mutex_valid: \valid(mutex);
-    requires attrs_valid_or_null: attrs ≡ \null ∨ \valid_read(attrs);
-    ensures
-      initialization: success_or_error:
-        (\result ≡ 0 ∧ \initialized(\old(mutex))) ∨ \result ≡ 11 ∨
-        \result ≡ 12 ∨ \result ≡ 1 ∨ \result ≡ 22;
-    assigns *mutex, \result;
-    assigns *mutex \from *mutex, *attrs;
-    assigns \result \from (indirect: *mutex), (indirect: *attrs);
- */
-extern int pthread_mutex_init(pthread_mutex_t * restrict mutex,
-                              pthread_mutexattr_t const * restrict attrs);
-
-/*@ requires mutex_valid: \valid(mutex);
-    ensures
-      success_or_error:
-        \result ≡ 0 ∨ \result ≡ 11 ∨ \result ≡ 22 ∨
-        \result ≡ 35;
-    assigns *mutex, \result;
-    assigns *mutex \from *mutex;
-    assigns \result \from (indirect: *mutex);
- */
-extern int pthread_mutex_lock(pthread_mutex_t *mutex);
-
-/*@ requires mutex_valid: \valid(mutex);
-    ensures success_or_error: \result ≡ 0 ∨ \result ≡ 1;
-    assigns *mutex, \result;
-    assigns *mutex \from *mutex;
-    assigns \result \from (indirect: *mutex);
- */
-extern int pthread_mutex_unlock(pthread_mutex_t *mutex);
-
-/*@ requires valid_attr: \valid(attr);
-    ensures success_or_error: \result ≡ 0 ∨ \result ≡ 22;
-    assigns *attr, \result;
-    assigns *attr \from *attr;
-    assigns \result \from (indirect: *attr);
- */
-extern int pthread_mutexattr_destroy(pthread_mutexattr_t *attr);
-
-/*@ requires valid_attr: \valid(attr);
-    ensures success_or_error: \result ≡ 0 ∨ \result ≡ 12;
-    assigns \result, *attr;
-    assigns \result \from \nothing;
-    assigns *attr \from \nothing;
- */
-extern int pthread_mutexattr_init(pthread_mutexattr_t *attr);
-
-/*@ requires valid_attr: \valid(attr);
-    ensures success_or_error: \result ≡ 0 ∨ \result ≡ 22;
-    assigns \result, *attr;
-    assigns \result \from (indirect: type);
-    assigns *attr \from (indirect: type);
- */
-extern int pthread_mutexattr_settype(pthread_mutexattr_t *attr, int type);
-
-/*@ requires valid_name: valid_read_string(name);
-    assigns \result;
-    assigns \result
-      \from (indirect: thread),
-            (indirect: *(name + (0 .. strlen{Old}(name))));
- */
-int pthread_setname_np(pthread_t thread, char const *name);
-
-/*@ requires valid_name: \valid(name + (0 .. len - 1));
-    ensures
-      name_written: initialization:
-        \result ≡ 0 ⇒
-        valid_string(\old(name)) ∧
-        \initialized(\old(name) + (0 .. strlen(\old(name))));
-    assigns \result, *(name + (0 .. len - 1));
-    assigns \result \from thread;
-    assigns *(name + (0 .. len - 1)) \from thread;
- */
-int pthread_getname_np(pthread_t thread, char *name, size_t len);
-
-/*@ assigns \result;
-    assigns \result \from (indirect: env); */
-extern int setjmp(struct __jmp_buf_tag env[1]);
-
-/*@ ensures never_terminates: \false;
-    assigns \nothing; */
-extern void longjmp(struct __jmp_buf_tag env[1], int val);
-
-/*@ assigns \result;
-    assigns \result \from (indirect: env), (indirect: savesigs);
- */
-extern int sigsetjmp(struct __jmp_buf_tag env[1], int savesigs);
-
-/*@ ensures never_terminates: \false;
-    assigns \nothing; */
-extern void siglongjmp(struct __jmp_buf_tag env[1], int val);
-
-/*@ assigns \result;
-    assigns \result \from (indirect: fd), (indirect: request);
- */
-extern int __va_ioctl_void(int fd, int request);
-
-/*@ assigns \result;
-    assigns \result
-      \from (indirect: fd), (indirect: request), (indirect: arg);
- */
-extern int __va_ioctl_int(int fd, int request, int arg);
-
-/*@ assigns \result, *((char *)argp + (0 ..));
-    assigns \result
-      \from (indirect: fd), (indirect: request),
-            (indirect: *((char *)argp + (0 ..)));
-    assigns *((char *)argp + (0 ..))
-      \from (indirect: fd), (indirect: request), *((char *)argp + (0 ..));
- */
-extern int __va_ioctl_ptr(int fd, int request, void *argp);
-
-/*@ ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result;
-    assigns \result \from (indirect: fd), (indirect: operation);
- */
-extern int flock(int fd, int operation);
-
-CODE facilitynames[23] =
-  {{.c_name = "auth", .c_val = 4 << 3},
-   {.c_name = "authpriv", .c_val = 10 << 3},
-   {.c_name = "cron", .c_val = 9 << 3},
-   {.c_name = "daemon", .c_val = 3 << 3},
-   {.c_name = "ftp", .c_val = 11 << 3},
-   {.c_name = "kern", .c_val = 0 << 3},
-   {.c_name = "lpr", .c_val = 6 << 3},
-   {.c_name = "mail", .c_val = 2 << 3},
-   {.c_name = "mark", .c_val = 24 | 0},
-   {.c_name = "news", .c_val = 7 << 3},
-   {.c_name = "security", .c_val = 4 << 3},
-   {.c_name = "syslog", .c_val = 5 << 3},
-   {.c_name = "user", .c_val = 1 << 3},
-   {.c_name = "uucp", .c_val = 8 << 3},
-   {.c_name = "local0", .c_val = 16 << 3},
-   {.c_name = "local1", .c_val = 17 << 3},
-   {.c_name = "local2", .c_val = 18 << 3},
-   {.c_name = "local3", .c_val = 19 << 3},
-   {.c_name = "local4", .c_val = 20 << 3},
-   {.c_name = "local5", .c_val = 21 << 3},
-   {.c_name = "local6", .c_val = 22 << 3},
-   {.c_name = "local7", .c_val = 23 << 3},
-   {.c_name = (char const *)0, .c_val = -1}};
-CODE prioritynames[13] =
-  {{.c_name = "alert", .c_val = 1},
-   {.c_name = "crit", .c_val = 2},
-   {.c_name = "debug", .c_val = 7},
-   {.c_name = "emerg", .c_val = 0},
-   {.c_name = "err", .c_val = 3},
-   {.c_name = "error", .c_val = 3},
-   {.c_name = "info", .c_val = 6},
-   {.c_name = "none", .c_val = 0x10},
-   {.c_name = "notice", .c_val = 5},
-   {.c_name = "panic", .c_val = 0},
-   {.c_name = "warn", .c_val = 4},
-   {.c_name = "warning", .c_val = 4},
-   {.c_name = (char const *)0, .c_val = -1}};
-/*@ assigns \nothing; */
-extern void closelog(void);
-
-/*@ assigns \nothing; */
-extern void openlog(char const *__x0, int __x1, int __x2);
-
-/*@ assigns \nothing; */
-extern int setlogmask(int __x0);
-
-/*@ assigns \nothing; */
-extern void syslog(int __x0, char const *__x1, void * const *__va_params);
-
-/*@ assigns \nothing; */
-extern void vsyslog(int __x0, char const *__x1, va_list __x2);
-
-/*@ ghost extern int __fc_tz; */
-
-/*@ requires valid_path: valid_read_string(path);
-    requires
-      valid_times_or_null: \valid_read(times + (0 .. 1)) ∨ times ≡ \null;
-    assigns \result;
-    assigns \result
-      \from (indirect: *(path + (0 .. strlen{Old}(path)))),
-            (indirect: times), (indirect: *(times + (0 .. 1)));
- */
-extern int utimes(char const *path, struct timeval const times[2]);
-
-/*@ ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns tv->tv_sec, tv->tv_usec, *((struct timezone *)tz), \result;
-    assigns tv->tv_sec \from __fc_time;
-    assigns tv->tv_usec \from __fc_time;
-    assigns *((struct timezone *)tz) \from __fc_tz;
-    assigns \result
-      \from (indirect: tv), (indirect: tz), *tv, *((struct timezone *)tz),
-            __fc_tz;
-    
-    behavior tv_and_tz_null:
-      assumes null_tv_tz: tv ≡ \null ∧ tz ≡ \null;
-      assigns \result;
-      assigns \result \from (indirect: __fc_tz);
-    
-    behavior tv_not_null:
-      assumes non_null_tv_null_tz: tv ≢ \null ∧ tz ≡ \null;
-      ensures
-        initialization: tv_sec: tv_usec:
-          \initialized(&\old(tv)->tv_sec) ∧
-          \initialized(&\old(tv)->tv_usec);
-      ensures tv_usec_bounded: 0 ≤ \old(tv)->tv_usec ≤ 999999;
-      assigns tv->tv_sec, tv->tv_usec, \result;
-      assigns tv->tv_sec \from (indirect: __fc_time);
-      assigns tv->tv_usec \from (indirect: __fc_time);
-      assigns \result \from (indirect: *tv), (indirect: __fc_tz);
-    
-    behavior tz_not_null:
-      assumes null_tv_non_null_tz: tv ≡ \null ∧ tz ≢ \null;
-      ensures initialization: tz: \initialized((struct timezone *)\old(tz));
-      assigns *((struct timezone *)tz), \result;
-      assigns *((struct timezone *)tz) \from __fc_tz;
-      assigns \result
-        \from (indirect: *((struct timezone *)tz)), (indirect: __fc_tz);
-    
-    behavior tv_and_tz_not_null:
-      assumes non_null_tv_tz: tv ≢ \null ∧ tz ≢ \null;
-      ensures
-        initialization: tv_sec: tv_usec:
-          \initialized(&\old(tv)->tv_sec) ∧
-          \initialized(&\old(tv)->tv_usec);
-      ensures initialization: tz: \initialized((struct timezone *)\old(tz));
-      assigns tv->tv_sec, tv->tv_usec, *((struct timezone *)tz), \result;
-      assigns tv->tv_sec \from (indirect: __fc_time);
-      assigns tv->tv_usec \from (indirect: __fc_time);
-      assigns *((struct timezone *)tz) \from __fc_tz;
-      assigns \result
-        \from (indirect: *tv), (indirect: *((struct timezone *)tz)),
-              (indirect: __fc_tz);
-    
-    complete behaviors tv_and_tz_not_null,
-                       tz_not_null,
-                       tv_not_null,
-                       tv_and_tz_null;
-    disjoint behaviors tv_and_tz_not_null,
-                       tz_not_null,
-                       tv_not_null,
-                       tv_and_tz_null;
- */
-extern int gettimeofday(struct timeval * restrict tv, void * restrict tz);
-
-/*@ requires valid_tv_or_null: \valid_read(tv) ∨ tv ≡ \null;
-    requires valid_tz_or_null: \valid_read(tz) ∨ tz ≡ \null;
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns __fc_time, __fc_tz, \result;
-    assigns __fc_time
-      \from tv->tv_sec, tv->tv_usec, tz->tz_dsttime, tz->tz_minuteswest;
-    assigns __fc_tz
-      \from tv->tv_sec, tv->tv_usec, tz->tz_dsttime, tz->tz_minuteswest;
-    assigns \result \from (indirect: *tv), (indirect: *tz);
- */
-extern int settimeofday(struct timeval const *tv, struct timezone const *tz);
-
-/*@ ghost struct itimerval volatile __fc_itimer_real; */
-/*@ ghost struct itimerval volatile __fc_itimer_virtual; */
-/*@ ghost struct itimerval volatile __fc_itimer_prof; */
-/*@ requires valid_curr_value: \valid(curr_value);
-    ensures initialization: curr_value: \initialized(\old(curr_value));
-    assigns \result, *curr_value;
-    assigns \result \from (indirect: which);
-    assigns *curr_value
-      \from __fc_itimer_real, __fc_itimer_virtual, __fc_itimer_prof;
-    
-    behavior real:
-      assumes itimer_real: which ≡ 0;
-      ensures result_ok: \result ≡ 0;
-      assigns \result, *curr_value;
-      assigns \result \from \nothing;
-      assigns *curr_value \from __fc_itimer_real;
-    
-    behavior virtual:
-      assumes itimer_virtual: which ≡ 1;
-      ensures result_ok: \result ≡ 0;
-      assigns \result, *curr_value;
-      assigns \result \from \nothing;
-      assigns *curr_value \from __fc_itimer_virtual;
-    
-    behavior prof:
-      assumes itimer_prof: which ≡ 2;
-      ensures result_ok: \result ≡ 0;
-      assigns \result, *curr_value;
-      assigns \result \from \nothing;
-      assigns *curr_value \from __fc_itimer_prof;
-    
-    behavior invalid:
-      assumes invalid_which: which ≢ 0 ∧ which ≢ 1 ∧ which ≢ 2;
-      ensures result_error: \result ≡ -1;
-      assigns \result;
-      assigns \result \from \nothing;
-    
-    complete behaviors invalid, prof, virtual, real;
-    disjoint behaviors invalid, prof, virtual, real;
- */
-extern int getitimer(int which, struct itimerval *curr_value);
-
-/*@ requires valid_new_value: \valid_read(new_value);
-    requires
-      old_value_null_or_valid: old_value ≡ \null ∨ \valid(old_value);
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns *old_value, \result;
-    assigns *old_value
-      \from (indirect: which), (indirect: old_value), (indirect: new_value),
-            __fc_itimer_real, __fc_itimer_virtual, __fc_itimer_prof;
-    assigns \result
-      \from (indirect: which), (indirect: new_value), (indirect: *new_value);
-    
-    behavior real:
-      assumes
-        itimer_real_and_valid:
-          which ≡ 0 ≤ new_value->it_value.tv_usec ≤ 999999 ∧
-          0 ≤ new_value->it_interval.tv_usec ≤ 999999;
-      ensures result_ok: \result ≡ 0;
-      ensures initialization: old_value: \initialized(\old(old_value));
-      assigns \result, *old_value, __fc_itimer_real;
-      assigns \result \from \nothing;
-      assigns *old_value \from __fc_itimer_real;
-      assigns __fc_itimer_real \from *new_value;
-    
-    behavior virtual:
-      assumes
-        itimer_virtual_and_valid:
-          which ≡ 1 ∧ 0 ≤ new_value->it_value.tv_usec ≤ 999999 ∧
-          0 ≤ new_value->it_interval.tv_usec ≤ 999999;
-      ensures result_ok: \result ≡ 0;
-      ensures initialization: old_value: \initialized(\old(old_value));
-      assigns \result, *old_value;
-      assigns \result \from \nothing;
-      assigns *old_value \from __fc_itimer_virtual;
-    
-    behavior prof:
-      assumes
-        itimer_prof_and_valid:
-          which ≡ 2 ∧ 0 ≤ new_value->it_value.tv_usec ≤ 999999 ∧
-          0 ≤ new_value->it_interval.tv_usec ≤ 999999;
-      ensures result_ok: \result ≡ 0;
-      ensures initialization: old_value: \initialized(\old(old_value));
-      assigns \result, *old_value;
-      assigns \result \from \nothing;
-      assigns *old_value \from __fc_itimer_prof;
-    
-    behavior invalid:
-      assumes
-        invalid_itimer_or_new_value:
-          (which ≢ 0 ∧ which ≢ 1 ∧ which ≢ 2) ∨
-          ¬(0 ≤ new_value->it_value.tv_usec ≤ 999999 ∧
-             0 ≤ new_value->it_interval.tv_usec ≤ 999999);
-      ensures result_error: \result ≡ -1;
-      assigns \result;
-      assigns \result \from \nothing;
-    
-    disjoint behaviors invalid, prof, virtual, real;
- */
-extern int setitimer(int which, struct itimerval const * restrict new_value,
-                     struct itimerval * restrict old_value);
-
-/*@ requires valid_fdset: \valid(fdset);
-    requires initialization: \initialized(fdset);
-    assigns *fdset;
-    assigns *fdset \from *fdset, (indirect: fd);
- */
-extern void FD_CLR(int fd, fd_set *fdset);
-
-/*@ requires valid_fdset: \valid_read(fdset);
-    requires initialization: \initialized(fdset);
-    assigns \result;
-    assigns \result \from (indirect: *fdset), (indirect: fd);
- */
-extern int FD_ISSET(int fd, fd_set const *fdset);
-
-/*@ requires valid_fdset: \valid(fdset);
-    requires initialization: \initialized(fdset);
-    assigns *fdset;
-    assigns *fdset \from *fdset, (indirect: fd);
- */
-extern void FD_SET(int fd, fd_set *fdset);
-
-/*@ requires valid_fdset: \valid(fdset);
-    ensures initialization: \initialized(\old(fdset));
-    assigns *fdset;
-    assigns *fdset \from \nothing;
- */
-extern void FD_ZERO(fd_set *fdset);
-
-/*@ assigns \result;
-    assigns \result \from which, who; */
-extern int getpriority(int which, id_t who);
-
-/*@ assigns \result;
-    assigns \result \from which, who, prio; */
-extern int setpriority(int which, id_t who, int prio);
-
-/*@ requires valid_rlp: \valid(rlp);
-    assigns \result, *rlp;
-    assigns \result \from resource;
-    assigns *rlp \from resource;
- */
-extern int getrlimit(int resource, struct rlimit *rlp);
-
-/*@ requires valid_r_usage: \valid(r_usage);
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns *r_usage, \result;
-    assigns *r_usage \from who;
-    assigns \result \from (indirect: who);
- */
-extern int getrusage(int who, struct rusage *r_usage);
-
-/*@ requires valid_rlp: \valid_read(rlp);
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns *rlp, \result;
-    assigns *rlp \from resource;
-    assigns \result \from (indirect: resource), (indirect: *rlp);
- */
-extern int setrlimit(int resource, struct rlimit const *rlp);
-
-/*@ requires valid_in_fd: 0 ≤ in_fd < 1024;
-    requires valid_out_fd: 0 ≤ out_fd < 1024;
-    requires valid_offset_or_null: offset ≡ \null ∨ \valid(offset);
-    requires
-      initialization: offset: offset ≡ \null ∨ \initialized(offset);
-    ensures
-      error_or_chars_sent: \result ≡ -1 ∨ (0 ≤ \result ≤ \old(count));
-    ensures initialization: offset: \initialized(\old(offset));
-    assigns __fc_errno, \result, *offset;
-    assigns __fc_errno
-      \from (indirect: out_fd), (indirect: in_fd), (indirect: offset),
-            (indirect: count);
-    assigns \result
-      \from (indirect: out_fd), (indirect: in_fd), (indirect: offset),
-            (indirect: count);
-    assigns *offset
-      \from (indirect: out_fd), (indirect: in_fd), (indirect: offset),
-            (indirect: count);
- */
-ssize_t sendfile(int out_fd, int in_fd, off_t *offset, size_t count);
-
-/*@ requires valid_buffer: \valid(buffer);
-    assigns \result, *buffer;
-    assigns \result \from __fc_time;
-    assigns *buffer \from __fc_time;
- */
-extern clock_t times(struct tms *buffer);
-
-/*@ requires valid_name: \valid(name);
-    ensures result_ok_or_error: -1 ≤ \result;
-    ensures initialization: name: \initialized(\old(name));
-    assigns *name, \result;
-    assigns *name \from \nothing;
-    assigns \result \from \nothing;
- */
-extern int uname(struct utsname *name);
-
-/*@ ensures result_ok_or_error: \result ≡ -1 ∨ \result ≥ 0;
-    ensures
-      initialization: stat_loc_init_on_success:
-        \result ≥ 0 ∧ \old(stat_loc) ≢ \null ⇒
-        \initialized(\old(stat_loc));
-    assigns \result, *stat_loc;
-    assigns \result \from \nothing;
-    assigns *stat_loc \from \nothing;
-    
-    behavior stat_loc_null:
-      assumes stat_loc_null: stat_loc ≡ \null;
-      assigns \result;
-      assigns \result \from \nothing;
-    
-    behavior stat_loc_non_null:
-      assumes stat_loc_non_null: stat_loc ≢ \null;
-      requires valid_stat_loc: \valid(stat_loc);
- */
-extern pid_t wait(int *stat_loc);
-
-/*@ ensures result_ok_or_error: \result ≡ -1 ∨ \result ≥ 0;
-    ensures
-      initialization: stat_loc_init_on_success:
-        \result ≥ 0 ∧ \old(stat_loc) ≢ \null ⇒
-        \initialized(\old(stat_loc));
-    assigns \result, *stat_loc;
-    assigns \result \from (indirect: options);
-    assigns *stat_loc \from (indirect: options);
-    
-    behavior stat_loc_null:
-      assumes stat_loc_null: stat_loc ≡ \null;
-      assigns \result;
-      assigns \result \from \nothing;
-    
-    behavior stat_loc_non_null:
-      assumes stat_loc_non_null: stat_loc ≢ \null;
-      requires valid_stat_loc: \valid(stat_loc);
- */
-extern pid_t waitpid(pid_t pid, int *stat_loc, int options);
-
-/*@ requires valid_termios_p: \valid_read(termios_p);
-    assigns \result;
-    assigns \result \from (indirect: termios_p), *termios_p;
- */
-extern speed_t cfgetispeed(struct termios const *termios_p);
-
-/*@ requires valid_termios_p: \valid_read(termios_p);
-    assigns \result;
-    assigns \result \from (indirect: termios_p), *termios_p;
- */
-extern speed_t cfgetospeed(struct termios const *termios_p);
-
-/*@ requires valid_termios_p: \valid(termios_p);
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result, *termios_p;
-    assigns \result \from (indirect: termios_p), speed;
-    assigns *termios_p \from (indirect: termios_p), speed;
- */
-extern int cfsetispeed(struct termios *termios_p, speed_t speed);
-
-/*@ requires valid_termios_p: \valid(termios_p);
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result, *termios_p;
-    assigns \result \from (indirect: termios_p), speed;
-    assigns *termios_p \from (indirect: termios_p), speed;
- */
-extern int cfsetospeed(struct termios *termios_p, speed_t speed);
-
-/*@ requires
-      valid_queue_selector:
-        queue_selector ≡ 0 ∨ queue_selector ≡ 1 ∨
-        queue_selector ≡ 2;
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns \result, Frama_C_entropy_source;
-    assigns \result
-      \from (indirect: fd), (indirect: queue_selector),
-            (indirect: Frama_C_entropy_source);
-    assigns Frama_C_entropy_source \from Frama_C_entropy_source;
- */
-extern int tcflush(int fd, int queue_selector);
-
-/*@ requires valid_termios_p: \valid(termios_p);
-    assigns \result, *termios_p, Frama_C_entropy_source;
-    assigns \result \from (indirect: fd), (indirect: Frama_C_entropy_source);
-    assigns *termios_p
-      \from (indirect: fd), (indirect: Frama_C_entropy_source);
-    assigns Frama_C_entropy_source \from Frama_C_entropy_source;
-    
-    behavior ok:
-      assumes nondet: Frama_C_entropy_source ≡ 0;
-      ensures initialization: termios_p: \initialized(\old(termios_p));
-      ensures result_ok: \result ≡ 0;
-    
-    behavior error:
-      assumes nondet: Frama_C_entropy_source ≢ 0;
-      ensures result_error: \result ≡ -1;
-    
-    complete behaviors error, ok;
-    disjoint behaviors error, ok;
- */
-extern int tcgetattr(int fd, struct termios *termios_p);
-
-/*@ requires valid_termios_p: \valid(termios_p);
-    ensures result_ok_or_error: \result ≡ 0 ∨ \result ≡ -1;
-    assigns *termios_p, Frama_C_entropy_source, \result;
-    assigns *termios_p
-      \from (indirect: fd), (indirect: optional_actions),
-            (indirect: Frama_C_entropy_source), *termios_p;
-    assigns Frama_C_entropy_source \from Frama_C_entropy_source;
-    assigns \result
-      \from (indirect: fd), (indirect: optional_actions),
-            (indirect: Frama_C_entropy_source), (indirect: *termios_p);
- */
-extern int tcsetattr(int fd, int optional_actions, struct termios *termios_p);
-
-void main(void)
-{
-  /*@ assert __fc_p_fopen ≡ (FILE *)(&__fc_fopen); */ ;
-  /*@ assert __fc_p_opendir ≡ (DIR *)(&__fc_opendir); */ ;
-  /*@ assert __fc_p_time_tm ≡ &__fc_time_tm; */ ;
-  /*@ assert __fc_p_strerror ≡ (char *)__fc_strerror; */ ;
-  return;
-}
-
-
-- 
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