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Make sure free symbols are declared in SMT2_conv after quantifier rew…
…riting A bound variable may shadow another free or bound variable.
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,34 @@ | ||
#include <assert.h> | ||
#include <stdbool.h> | ||
#include <stddef.h> | ||
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#define N 16 | ||
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void main() | ||
{ | ||
int a[N]; | ||
a[10] = 0; | ||
bool flag = true; | ||
for(size_t j = 0; j < N; ++j) | ||
// clang-format off | ||
__CPROVER_assigns(j, __CPROVER_object_whole(a)) | ||
__CPROVER_loop_invariant(j <= N) | ||
__CPROVER_loop_invariant((j != 0) ==> __CPROVER_forall { | ||
int k; | ||
(0 <= k && k < N) ==> (a[k] == 1) | ||
}) | ||
// clang-format on | ||
{ | ||
for(size_t i = 0; i < N; ++i) | ||
// clang-format off | ||
__CPROVER_assigns(i, __CPROVER_object_whole(a)) | ||
__CPROVER_loop_invariant(0 <= i && i <= N) | ||
__CPROVER_loop_invariant(__CPROVER_forall { int k; k < i ==> a[k] == 1 }) | ||
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// clang-format on | ||
{ | ||
a[i] = 1; | ||
} | ||
} | ||
assert(a[10] == 1); | ||
} |
6 changes: 2 additions & 4 deletions
6
...acts-dfcc/quantifiers-loop-fail/test.desc → ...tracts-dfcc/quantifiers-loop-05/test.desc
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