From 8cbbcf264d515a60082012db9611917317d6c7a9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?David=20B=C3=BChler?= <david.buhler@cea.fr>
Date: Fri, 26 Mar 2021 15:14:27 +0100
Subject: [PATCH] [Eva] Adds new test cases of the automatic loop unrolling.
---
tests/value/auto_loop_unroll.c | 24 ++++-
.../oracle/auto_loop_unroll.0.res.oracle | 102 +++++++++++-------
.../oracle/auto_loop_unroll.1.res.oracle | 86 ++++++++-------
3 files changed, 133 insertions(+), 79 deletions(-)
diff --git a/tests/value/auto_loop_unroll.c b/tests/value/auto_loop_unroll.c
index 23d10397c36..ec9519bbcc7 100644
--- a/tests/value/auto_loop_unroll.c
+++ b/tests/value/auto_loop_unroll.c
@@ -258,7 +258,7 @@ void various_conditions () {
All loops could be automatically unrolled on the second run, but should
not be unrolled on the first run. */
void temporary_variables () {
- int i, res = 0;
+ int i, j = 0, k = 0, res = 0;
for (i = 0; i++ < 20;) {
res++;
}
@@ -268,6 +268,28 @@ void temporary_variables () {
res++;
}
Frama_C_show_each_21(res);
+ res = 0;
+ for (i = 0; j < 21; i++) {
+ j = i;
+ res++;
+ }
+ Frama_C_show_each_22(res);
+ res = 0;
+ j = 0;
+ for (i = 0; k < 22; i++) {
+ j = i;
+ k = j;
+ res++;
+ }
+ Frama_C_show_each_23(res);
+ res = 0;
+ j = 0;
+ for (i = 0; j < 23; i++) {
+ if (undet)
+ j = i;
+ res++;
+ }
+ Frama_C_show_each_top(res);
}
/* Examples of natural loops with goto or continue statements. */
diff --git a/tests/value/oracle/auto_loop_unroll.0.res.oracle b/tests/value/oracle/auto_loop_unroll.0.res.oracle
index e100198c714..9f0232a5ddc 100644
--- a/tests/value/oracle/auto_loop_unroll.0.res.oracle
+++ b/tests/value/oracle/auto_loop_unroll.0.res.oracle
@@ -6,7 +6,7 @@
undet ∈ [--..--]
g ∈ {0}
[eva] computing for function simple_loops <- main.
- Called from tests/value/auto_loop_unroll.c:366.
+ Called from tests/value/auto_loop_unroll.c:388.
[eva] tests/value/auto_loop_unroll.c:24: starting to merge loop iterations
[eva:alarm] tests/value/auto_loop_unroll.c:25: Warning:
signed overflow. assert res + 1 ≤ 2147483647;
@@ -27,7 +27,7 @@
[eva] Recording results for simple_loops
[eva] Done for function simple_loops
[eva] computing for function various_loops <- main.
- Called from tests/value/auto_loop_unroll.c:367.
+ Called from tests/value/auto_loop_unroll.c:389.
[eva] tests/value/auto_loop_unroll.c:57: starting to merge loop iterations
[eva:alarm] tests/value/auto_loop_unroll.c:58: Warning:
signed overflow. assert res + 1 ≤ 2147483647;
@@ -146,7 +146,7 @@
[eva] Recording results for various_loops
[eva] Done for function various_loops
[eva] computing for function complex_loops <- main.
- Called from tests/value/auto_loop_unroll.c:368.
+ Called from tests/value/auto_loop_unroll.c:390.
[eva] tests/value/auto_loop_unroll.c:152: starting to merge loop iterations
[eva:alarm] tests/value/auto_loop_unroll.c:154: Warning:
signed overflow. assert res + 1 ≤ 2147483647;
@@ -205,7 +205,7 @@
[eva] Recording results for complex_loops
[eva] Done for function complex_loops
[eva] computing for function various_conditions <- main.
- Called from tests/value/auto_loop_unroll.c:369.
+ Called from tests/value/auto_loop_unroll.c:391.
[eva] tests/value/auto_loop_unroll.c:211: starting to merge loop iterations
[eva:alarm] tests/value/auto_loop_unroll.c:212: Warning:
signed overflow. assert res + 1 ≤ 2147483647;
@@ -245,7 +245,7 @@
[eva] Recording results for various_conditions
[eva] Done for function various_conditions
[eva] computing for function temporary_variables <- main.
- Called from tests/value/auto_loop_unroll.c:370.
+ Called from tests/value/auto_loop_unroll.c:392.
[eva] tests/value/auto_loop_unroll.c:262: starting to merge loop iterations
[eva:alarm] tests/value/auto_loop_unroll.c:262: Warning:
signed overflow. assert i + 1 ≤ 2147483647;
@@ -258,60 +258,78 @@
[eva:alarm] tests/value/auto_loop_unroll.c:267: Warning:
signed overflow. assert -2147483648 ≤ i - 1;
[eva] tests/value/auto_loop_unroll.c:270: Frama_C_show_each_21: [0..2147483647]
+[eva] tests/value/auto_loop_unroll.c:272: starting to merge loop iterations
+[eva:alarm] tests/value/auto_loop_unroll.c:274: Warning:
+ signed overflow. assert res + 1 ≤ 2147483647;
+[eva:alarm] tests/value/auto_loop_unroll.c:272: Warning:
+ signed overflow. assert i + 1 ≤ 2147483647;
+[eva] tests/value/auto_loop_unroll.c:276: Frama_C_show_each_22: [0..2147483647]
+[eva] tests/value/auto_loop_unroll.c:279: starting to merge loop iterations
+[eva:alarm] tests/value/auto_loop_unroll.c:282: Warning:
+ signed overflow. assert res + 1 ≤ 2147483647;
+[eva:alarm] tests/value/auto_loop_unroll.c:279: Warning:
+ signed overflow. assert i + 1 ≤ 2147483647;
+[eva] tests/value/auto_loop_unroll.c:284: Frama_C_show_each_23: [0..2147483647]
+[eva] tests/value/auto_loop_unroll.c:287: starting to merge loop iterations
+[eva:alarm] tests/value/auto_loop_unroll.c:290: Warning:
+ signed overflow. assert res + 1 ≤ 2147483647;
+[eva:alarm] tests/value/auto_loop_unroll.c:287: Warning:
+ signed overflow. assert i + 1 ≤ 2147483647;
+[eva] tests/value/auto_loop_unroll.c:292: Frama_C_show_each_top: [0..2147483647]
[eva] Recording results for temporary_variables
[eva] Done for function temporary_variables
[eva] computing for function loops_with_goto <- main.
- Called from tests/value/auto_loop_unroll.c:371.
-[eva] tests/value/auto_loop_unroll.c:276: starting to merge loop iterations
-[eva:alarm] tests/value/auto_loop_unroll.c:277: Warning:
+ Called from tests/value/auto_loop_unroll.c:393.
+[eva] tests/value/auto_loop_unroll.c:298: starting to merge loop iterations
+[eva:alarm] tests/value/auto_loop_unroll.c:299: Warning:
signed overflow. assert res + 1 ≤ 2147483647;
-[eva] tests/value/auto_loop_unroll.c:281: Frama_C_show_each_30: [0..2147483647]
-[eva:alarm] tests/value/auto_loop_unroll.c:286: Warning:
+[eva] tests/value/auto_loop_unroll.c:303: Frama_C_show_each_30: [0..2147483647]
+[eva:alarm] tests/value/auto_loop_unroll.c:308: Warning:
signed overflow. assert res + 1 ≤ 2147483647;
-[eva] tests/value/auto_loop_unroll.c:285: starting to merge loop iterations
-[eva] tests/value/auto_loop_unroll.c:290: Frama_C_show_each_top: [0..2147483647]
-[eva] tests/value/auto_loop_unroll.c:293: starting to merge loop iterations
-[eva:alarm] tests/value/auto_loop_unroll.c:294: Warning:
+[eva] tests/value/auto_loop_unroll.c:307: starting to merge loop iterations
+[eva] tests/value/auto_loop_unroll.c:312: Frama_C_show_each_top: [0..2147483647]
+[eva] tests/value/auto_loop_unroll.c:315: starting to merge loop iterations
+[eva:alarm] tests/value/auto_loop_unroll.c:316: Warning:
signed overflow. assert res + 1 ≤ 2147483647;
-[eva] tests/value/auto_loop_unroll.c:299: Frama_C_show_each_32: [0..2147483647]
-[eva:alarm] tests/value/auto_loop_unroll.c:303: Warning:
+[eva] tests/value/auto_loop_unroll.c:321: Frama_C_show_each_32: [0..2147483647]
+[eva:alarm] tests/value/auto_loop_unroll.c:325: Warning:
signed overflow. assert res + 1 ≤ 2147483647;
-[eva] tests/value/auto_loop_unroll.c:302: starting to merge loop iterations
-[eva] tests/value/auto_loop_unroll.c:307:
+[eva] tests/value/auto_loop_unroll.c:324: starting to merge loop iterations
+[eva] tests/value/auto_loop_unroll.c:329:
Frama_C_show_each_33_inf: [0..2147483647]
-[eva:alarm] tests/value/auto_loop_unroll.c:311: Warning:
+[eva:alarm] tests/value/auto_loop_unroll.c:333: Warning:
signed overflow. assert i + 1 ≤ 2147483647;
-[eva] tests/value/auto_loop_unroll.c:310: starting to merge loop iterations
-[eva:alarm] tests/value/auto_loop_unroll.c:310: Warning:
+[eva] tests/value/auto_loop_unroll.c:332: starting to merge loop iterations
+[eva:alarm] tests/value/auto_loop_unroll.c:332: Warning:
signed overflow. assert res + 1 ≤ 2147483647;
-[eva] tests/value/auto_loop_unroll.c:315: Frama_C_show_each_top: [0..2147483647]
-[eva] tests/value/auto_loop_unroll.c:318: starting to merge loop iterations
-[eva:alarm] tests/value/auto_loop_unroll.c:321: Warning:
+[eva] tests/value/auto_loop_unroll.c:337: Frama_C_show_each_top: [0..2147483647]
+[eva] tests/value/auto_loop_unroll.c:340: starting to merge loop iterations
+[eva:alarm] tests/value/auto_loop_unroll.c:343: Warning:
signed overflow. assert res + 1 ≤ 2147483647;
-[eva] tests/value/auto_loop_unroll.c:323:
+[eva] tests/value/auto_loop_unroll.c:345:
Frama_C_show_each_0_35: [0..2147483647]
-[eva] tests/value/auto_loop_unroll.c:326: starting to merge loop iterations
-[eva:alarm] tests/value/auto_loop_unroll.c:326: Warning:
+[eva] tests/value/auto_loop_unroll.c:348: starting to merge loop iterations
+[eva:alarm] tests/value/auto_loop_unroll.c:348: Warning:
signed overflow. assert res + 1 ≤ 2147483647;
-[eva:alarm] tests/value/auto_loop_unroll.c:326: Warning:
+[eva:alarm] tests/value/auto_loop_unroll.c:348: Warning:
signed overflow. assert -2147483648 ≤ i - 1;
-[eva] tests/value/auto_loop_unroll.c:330: Frama_C_show_each_36: [0..2147483647]
-[eva] tests/value/auto_loop_unroll.c:333: starting to merge loop iterations
-[eva:alarm] tests/value/auto_loop_unroll.c:336: Warning:
+[eva] tests/value/auto_loop_unroll.c:352: Frama_C_show_each_36: [0..2147483647]
+[eva] tests/value/auto_loop_unroll.c:355: starting to merge loop iterations
+[eva:alarm] tests/value/auto_loop_unroll.c:358: Warning:
signed overflow. assert res + 1 ≤ 2147483647;
-[eva] tests/value/auto_loop_unroll.c:338: Frama_C_show_each_27: [0..2147483647]
+[eva] tests/value/auto_loop_unroll.c:360: Frama_C_show_each_27: [0..2147483647]
[eva] Recording results for loops_with_goto
[eva] Done for function loops_with_goto
[eva] computing for function non_natural_loops <- main.
- Called from tests/value/auto_loop_unroll.c:372.
-[eva:alarm] tests/value/auto_loop_unroll.c:349: Warning:
+ Called from tests/value/auto_loop_unroll.c:394.
+[eva:alarm] tests/value/auto_loop_unroll.c:371: Warning:
signed overflow. assert res + 1 ≤ 2147483647;
-[eva] tests/value/auto_loop_unroll.c:353: Frama_C_show_each_50: [1..2147483647]
-[eva:alarm] tests/value/auto_loop_unroll.c:357: Warning:
+[eva] tests/value/auto_loop_unroll.c:375: Frama_C_show_each_50: [1..2147483647]
+[eva:alarm] tests/value/auto_loop_unroll.c:379: Warning:
signed overflow. assert res + 1 ≤ 2147483647;
-[eva:alarm] tests/value/auto_loop_unroll.c:358: Warning:
+[eva:alarm] tests/value/auto_loop_unroll.c:380: Warning:
signed overflow. assert -2147483648 ≤ i - 1;
-[eva] tests/value/auto_loop_unroll.c:361:
+[eva] tests/value/auto_loop_unroll.c:383:
Frama_C_show_each_1_51: [1..2147483647]
[eva] Recording results for non_natural_loops
[eva] Done for function non_natural_loops
@@ -347,7 +365,9 @@
[eva:final-states] Values at end of function simple_loops:
res ∈ {100}
[eva:final-states] Values at end of function temporary_variables:
- i ∈ [-2147483648..20]
+ i ∈ [0..2147483647]
+ j ∈ [23..2147483647]
+ k ∈ [22..2147483647]
res ∈ [0..2147483647]
[eva:final-states] Values at end of function various_conditions:
i ∈ {12}
@@ -438,9 +458,9 @@
[inout] Inputs for function simple_loops:
\nothing
[inout] Out (internal) for function temporary_variables:
- i; res; tmp; tmp_0
+ i; j; k; res; tmp; tmp_0
[inout] Inputs for function temporary_variables:
- \nothing
+ undet
[inout] Out (internal) for function various_conditions:
i; res; i_0; tmp; i_1; tmp_0; i_2; i_3; x; p; i_4
[inout] Inputs for function various_conditions:
diff --git a/tests/value/oracle/auto_loop_unroll.1.res.oracle b/tests/value/oracle/auto_loop_unroll.1.res.oracle
index 89c59b4e679..315adc3135a 100644
--- a/tests/value/oracle/auto_loop_unroll.1.res.oracle
+++ b/tests/value/oracle/auto_loop_unroll.1.res.oracle
@@ -6,7 +6,7 @@
undet ∈ [--..--]
g ∈ {0}
[eva] computing for function simple_loops <- main.
- Called from tests/value/auto_loop_unroll.c:366.
+ Called from tests/value/auto_loop_unroll.c:388.
[eva:loop-unroll] tests/value/auto_loop_unroll.c:24: Automatic loop unrolling.
[eva] tests/value/auto_loop_unroll.c:24:
Trace partitioning superposing up to 100 states
@@ -25,7 +25,7 @@
[eva] Recording results for simple_loops
[eva] Done for function simple_loops
[eva] computing for function various_loops <- main.
- Called from tests/value/auto_loop_unroll.c:367.
+ Called from tests/value/auto_loop_unroll.c:389.
[eva:loop-unroll] tests/value/auto_loop_unroll.c:57: Automatic loop unrolling.
[eva] tests/value/auto_loop_unroll.c:59: Frama_C_show_each_64: {64}
[eva:loop-unroll] tests/value/auto_loop_unroll.c:62: Automatic loop unrolling.
@@ -287,7 +287,7 @@
[eva] Recording results for various_loops
[eva] Done for function various_loops
[eva] computing for function complex_loops <- main.
- Called from tests/value/auto_loop_unroll.c:368.
+ Called from tests/value/auto_loop_unroll.c:390.
[eva] tests/value/auto_loop_unroll.c:152: starting to merge loop iterations
[eva:alarm] tests/value/auto_loop_unroll.c:154: Warning:
signed overflow. assert res + 1 ≤ 2147483647;
@@ -346,7 +346,7 @@
[eva] Recording results for complex_loops
[eva] Done for function complex_loops
[eva] computing for function various_conditions <- main.
- Called from tests/value/auto_loop_unroll.c:369.
+ Called from tests/value/auto_loop_unroll.c:391.
[eva:loop-unroll] tests/value/auto_loop_unroll.c:211: Automatic loop unrolling.
[eva] tests/value/auto_loop_unroll.c:214: Frama_C_show_each_11: {11}
[eva:loop-unroll] tests/value/auto_loop_unroll.c:216: Automatic loop unrolling.
@@ -366,52 +366,62 @@
[eva] Recording results for various_conditions
[eva] Done for function various_conditions
[eva] computing for function temporary_variables <- main.
- Called from tests/value/auto_loop_unroll.c:370.
+ Called from tests/value/auto_loop_unroll.c:392.
[eva:loop-unroll] tests/value/auto_loop_unroll.c:262: Automatic loop unrolling.
[eva] tests/value/auto_loop_unroll.c:265: Frama_C_show_each_20: {20}
[eva:loop-unroll] tests/value/auto_loop_unroll.c:267: Automatic loop unrolling.
[eva] tests/value/auto_loop_unroll.c:270: Frama_C_show_each_21: {21}
+[eva:loop-unroll] tests/value/auto_loop_unroll.c:272: Automatic loop unrolling.
+[eva] tests/value/auto_loop_unroll.c:276: Frama_C_show_each_22: {22}
+[eva:loop-unroll] tests/value/auto_loop_unroll.c:279: Automatic loop unrolling.
+[eva] tests/value/auto_loop_unroll.c:284: Frama_C_show_each_23: {23}
+[eva] tests/value/auto_loop_unroll.c:287: starting to merge loop iterations
+[eva:alarm] tests/value/auto_loop_unroll.c:290: Warning:
+ signed overflow. assert res + 1 ≤ 2147483647;
+[eva:alarm] tests/value/auto_loop_unroll.c:287: Warning:
+ signed overflow. assert i + 1 ≤ 2147483647;
+[eva] tests/value/auto_loop_unroll.c:292: Frama_C_show_each_top: [0..2147483647]
[eva] Recording results for temporary_variables
[eva] Done for function temporary_variables
[eva] computing for function loops_with_goto <- main.
- Called from tests/value/auto_loop_unroll.c:371.
-[eva:loop-unroll] tests/value/auto_loop_unroll.c:276: Automatic loop unrolling.
-[eva] tests/value/auto_loop_unroll.c:281: Frama_C_show_each_30: {30}
-[eva:loop-unroll] tests/value/auto_loop_unroll.c:285: Automatic loop unrolling.
-[eva] tests/value/auto_loop_unroll.c:285: starting to merge loop iterations
-[eva:alarm] tests/value/auto_loop_unroll.c:286: Warning:
+ Called from tests/value/auto_loop_unroll.c:393.
+[eva:loop-unroll] tests/value/auto_loop_unroll.c:298: Automatic loop unrolling.
+[eva] tests/value/auto_loop_unroll.c:303: Frama_C_show_each_30: {30}
+[eva:loop-unroll] tests/value/auto_loop_unroll.c:307: Automatic loop unrolling.
+[eva] tests/value/auto_loop_unroll.c:307: starting to merge loop iterations
+[eva:alarm] tests/value/auto_loop_unroll.c:308: Warning:
signed overflow. assert res + 1 ≤ 2147483647;
-[eva] tests/value/auto_loop_unroll.c:285:
+[eva] tests/value/auto_loop_unroll.c:307:
Trace partitioning superposing up to 100 states
-[eva] tests/value/auto_loop_unroll.c:290:
+[eva] tests/value/auto_loop_unroll.c:312:
Frama_C_show_each_top: [31..2147483647]
-[eva:loop-unroll] tests/value/auto_loop_unroll.c:293: Automatic loop unrolling.
-[eva] tests/value/auto_loop_unroll.c:299: Frama_C_show_each_32: {32}
-[eva:loop-unroll] tests/value/auto_loop_unroll.c:302: Automatic loop unrolling.
-[eva:alarm] tests/value/auto_loop_unroll.c:303: Warning:
+[eva:loop-unroll] tests/value/auto_loop_unroll.c:315: Automatic loop unrolling.
+[eva] tests/value/auto_loop_unroll.c:321: Frama_C_show_each_32: {32}
+[eva:loop-unroll] tests/value/auto_loop_unroll.c:324: Automatic loop unrolling.
+[eva:alarm] tests/value/auto_loop_unroll.c:325: Warning:
signed overflow. assert res + 1 ≤ 2147483647;
-[eva] tests/value/auto_loop_unroll.c:307:
+[eva] tests/value/auto_loop_unroll.c:329:
Frama_C_show_each_33_inf: [33..2147483647]
-[eva:alarm] tests/value/auto_loop_unroll.c:311: Warning:
+[eva:alarm] tests/value/auto_loop_unroll.c:333: Warning:
signed overflow. assert i + 1 ≤ 2147483647;
-[eva] tests/value/auto_loop_unroll.c:310: starting to merge loop iterations
-[eva:alarm] tests/value/auto_loop_unroll.c:310: Warning:
+[eva] tests/value/auto_loop_unroll.c:332: starting to merge loop iterations
+[eva:alarm] tests/value/auto_loop_unroll.c:332: Warning:
signed overflow. assert res + 1 ≤ 2147483647;
-[eva] tests/value/auto_loop_unroll.c:315: Frama_C_show_each_top: [0..2147483647]
-[eva:loop-unroll] tests/value/auto_loop_unroll.c:318: Automatic loop unrolling.
-[eva] tests/value/auto_loop_unroll.c:323: Frama_C_show_each_0_35: [0..35]
-[eva:loop-unroll] tests/value/auto_loop_unroll.c:326: Automatic loop unrolling.
-[eva] tests/value/auto_loop_unroll.c:330: Frama_C_show_each_36: {36}
-[eva:loop-unroll] tests/value/auto_loop_unroll.c:333: Automatic loop unrolling.
-[eva] tests/value/auto_loop_unroll.c:338: Frama_C_show_each_27: {27}
+[eva] tests/value/auto_loop_unroll.c:337: Frama_C_show_each_top: [0..2147483647]
+[eva:loop-unroll] tests/value/auto_loop_unroll.c:340: Automatic loop unrolling.
+[eva] tests/value/auto_loop_unroll.c:345: Frama_C_show_each_0_35: [0..35]
+[eva:loop-unroll] tests/value/auto_loop_unroll.c:348: Automatic loop unrolling.
+[eva] tests/value/auto_loop_unroll.c:352: Frama_C_show_each_36: {36}
+[eva:loop-unroll] tests/value/auto_loop_unroll.c:355: Automatic loop unrolling.
+[eva] tests/value/auto_loop_unroll.c:360: Frama_C_show_each_27: {27}
[eva] Recording results for loops_with_goto
[eva] Done for function loops_with_goto
[eva] computing for function non_natural_loops <- main.
- Called from tests/value/auto_loop_unroll.c:372.
-[eva:loop-unroll] tests/value/auto_loop_unroll.c:348: Automatic loop unrolling.
-[eva] tests/value/auto_loop_unroll.c:353: Frama_C_show_each_50: {50}
-[eva:loop-unroll] tests/value/auto_loop_unroll.c:357: Automatic loop unrolling.
-[eva] tests/value/auto_loop_unroll.c:361: Frama_C_show_each_1_51: [1..51]
+ Called from tests/value/auto_loop_unroll.c:394.
+[eva:loop-unroll] tests/value/auto_loop_unroll.c:370: Automatic loop unrolling.
+[eva] tests/value/auto_loop_unroll.c:375: Frama_C_show_each_50: {50}
+[eva:loop-unroll] tests/value/auto_loop_unroll.c:379: Automatic loop unrolling.
+[eva] tests/value/auto_loop_unroll.c:383: Frama_C_show_each_1_51: [1..51]
[eva] Recording results for non_natural_loops
[eva] Done for function non_natural_loops
[eva] Recording results for main
@@ -446,8 +456,10 @@
[eva:final-states] Values at end of function simple_loops:
res ∈ {100}
[eva:final-states] Values at end of function temporary_variables:
- i ∈ {-1}
- res ∈ {21}
+ i ∈ [0..2147483647]
+ j ∈ [23..2147483647]
+ k ∈ {22}
+ res ∈ [0..2147483647]
[eva:final-states] Values at end of function various_conditions:
i ∈ {12}
res ∈ {0}
@@ -537,9 +549,9 @@
[inout] Inputs for function simple_loops:
\nothing
[inout] Out (internal) for function temporary_variables:
- i; res; tmp; tmp_0
+ i; j; k; res; tmp; tmp_0
[inout] Inputs for function temporary_variables:
- \nothing
+ undet
[inout] Out (internal) for function various_conditions:
i; res; i_0; tmp; i_1; tmp_0; i_2; i_3; x; p; i_4
[inout] Inputs for function various_conditions:
--
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