[ioccc] add 2020 IOCCC winners

Makefile

@@ -60,6 +60,7 @@ TARGETS=\
   gzip124 \
   hiredis \
   icpc \
+  ioccc \
   itc-benchmarks \
   jsmn \
   kgflags \

README.md

@@ -131,6 +131,8 @@ when available. We also summarize the license of each directory below.
 - `gzip124`: GPL
 - `hiredis`: Redis license (BSD-style), see `COPYING`
 - `icpc`: Unlicense
+- `ioccc`: Creative Commons Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0),
+           see `COPYING`
 - `itc-benchmarks`: BSD 2-clause, see `COPYING`
 - `jsmn`: MIT
 - `kgflags`: MIT, see `LICENSE`

ioccc/.frama-c/2020_burton_prog.eva/alarms.csv

+directory	file	line	function	property kind	status	property
+2020/burton	prog.c	1	main	division_by_zero	Unknown	(long long)b ≢ 0
+2020/burton	prog.c	1	main	mem_access	Unknown	\valid_read(i)
+2020/burton	prog.c	1	main	precondition of atoi	Unknown	valid_nptr: \valid_read(nptr)
+2020/burton	prog.c	1	main	signed_overflow	Unknown	(long long)(a ^ (long long)(n / (long long)b)) * (long long)(y >> 0) ≤ 9223372036854775807
+2020/burton	prog.c	1	main	signed_overflow	Unknown	-9223372036854775808 ≤ (long long)(a ^ (long long)(n / (long long)b)) * (long long)(y >> 0)
+FRAMAC_SHARE/libc	stdlib.h	78	atoi	precondition	Unknown	valid_nptr: \valid_read(nptr)

ioccc/.frama-c/2020_burton_prog.eva/metrics.log

+[metrics] Eva coverage statistics
+=======================
+Syntactically reachable functions = 1 (out of 1)
+Semantically reached functions = 1
+Coverage estimation = 100.0%
+[metrics] Statements analyzed by Eva
+--------------------------
+12 stmts in analyzed functions, 12 stmts analyzed (100.0%)
+main: 12 stmts out of 12 (100.0%)

ioccc/.frama-c/2020_burton_prog.parse/framac.ast

+/* Generated by Frama-C */
+#include "errno.h"
+#include "stdarg.h"
+#include "stdio.h"
+#include "stdlib.h"
+/*@ requires valid_read_string(format);
+    requires valid_read_nstring(param0, 8);
+    assigns \result, __fc_stdout->__fc_FILE_data;
+    assigns \result
+      \from (indirect: __fc_stdout->__fc_FILE_id),
+            (indirect: __fc_stdout->__fc_FILE_data),
+            (indirect: *(format + (0 ..))), (indirect: *(param0 + (0 ..)));
+    assigns __fc_stdout->__fc_FILE_data
+      \from (indirect: __fc_stdout->__fc_FILE_id),
+            __fc_stdout->__fc_FILE_data, (indirect: *(format + (0 ..))),
+            *(param0 + (0 ..));
+ */
+int printf_va_1(char const * __restrict format, char *param0);
+
+int main(int b, char **i)
+{
+  int __retres;
+  int tmp;
+  long long n = 6945503773712347754LL;
+  long long a = 5859838231191962459LL ^ n;
+  long long r = (a / (long long)b & a) >> 4;
+  i ++;
+  ;
+  tmp = atoi((char const *)*i);
+  long long y = (long long)tmp;
+  long long _ =
+    (((a ^ n / (long long)b) * (y >> 0) | (y >> 7)) & r) | (a ^ r);
+  printf("%.8s\n",(char *)(& _)); /* printf_va_1 */
+  __retres = 0;
+  return __retres;
+}
+
+

ioccc/.frama-c/2020_burton_prog.parse/metrics.log

+[metrics] Defined functions (1)
+=====================
+ main (0 call); 
+
+Specified-only functions (0)
+============================
+ 
+
+Undefined and unspecified functions (0)
+=======================================
+ 
+
+'Extern' global variables (0)
+=============================
+ 
+
+Potential entry points (1)
+==========================
+ main; 
+
+Global metrics
+============== 
+Sloc = 12
+Decision point = 0
+Global variables = 0
+If = 0
+Loop = 0
+Goto = 0
+Assignment = 8
+Exit point = 1
+Function = 1
+Function call = 2
+Pointer dereferencing = 1
+Cyclomatic complexity = 1

ioccc/.frama-c/2020_giles_prog.eva/metrics.log

+[metrics] Eva coverage statistics
+=======================
+Syntactically reachable functions = 1 (out of 1)
+Semantically reached functions = 1
+Coverage estimation = 100.0%
+[metrics] References to non-analyzed functions
+------------------------------------
+[metrics] Statements analyzed by Eva
+--------------------------
+461 stmts in analyzed functions, 461 stmts analyzed (100.0%)
+main: 461 stmts out of 461 (100.0%)

ioccc/.frama-c/2020_giles_prog.parse/metrics.log

+[metrics] Defined functions (1)
+=====================
+ main (0 call); 
+
+Specified-only functions (0)
+============================
+ 
+
+Undefined and unspecified functions (0)
+=======================================
+ 
+
+'Extern' global variables (0)
+=============================
+ 
+
+Potential entry points (1)
+==========================
+ main; 
+
+Global metrics
+============== 
+Sloc = 461
+Decision point = 79
+Global variables = 1
+If = 79
+Loop = 5
+Goto = 8
+Assignment = 317
+Exit point = 1
+Function = 1
+Function call = 32
+Pointer dereferencing = 211
+Cyclomatic complexity = 80

ioccc/.frama-c/2020_giles_prog.parse/warnings.log

+2020/giles/prog.c:33:[kernel:parser:decimal-float] warning: Floating-point constant 0.994 is not represented exactly. Will use 0x1.fced916872b02p-1.
+(warn-once: no further messages from category 'parser:decimal-float' will be emitted)

ioccc/.frama-c/2020_kurdyukov1_prog.eva/alarms.csv

+directory	file	line	function	property kind	status	property
+2020/kurdyukov1	prog.c	19	main	index_bound	Unknown	0 ≤ (long)(4 + (long)(n / 4))
+2020/kurdyukov1	prog.c	20	main	signed_overflow	Unknown	-9223372036854775808 ≤ n - 1
+2020/kurdyukov1	prog.c	20	main	signed_overflow	Unknown	g + 8 ≤ 9223372036854775807
+2020/kurdyukov1	prog.c	21	main	shift	Invalid or unreachable	0 ≤ (long)(~e)

ioccc/.frama-c/2020_kurdyukov1_prog.eva/metrics.log

+[metrics] Eva coverage statistics
+=======================
+Syntactically reachable functions = 1 (out of 1)
+Semantically reached functions = 1
+Coverage estimation = 100.0%
+[metrics] Statements analyzed by Eva
+--------------------------
+107 stmts in analyzed functions, 60 stmts analyzed (56.1%)
+main: 60 stmts out of 107 (56.1%)

ioccc/.frama-c/2020_kurdyukov1_prog.eva/nonterm.log

+2020/kurdyukov1/prog.c:17:[nonterm] warning: non-terminating loop
+stack: main
+2020/kurdyukov1/prog.c:21:[nonterm] warning: non-terminating statement
+stack: main