File: main-definition-after-contract.c

package info (click to toggle)
cbmc 6.6.0-4
  • links: PTS
  • area: main
  • in suites: forky, sid, trixie
  • size: 153,852 kB
  • sloc: cpp: 386,459; ansic: 114,466; java: 28,405; python: 6,003; yacc: 4,552; makefile: 4,041; lex: 2,487; xml: 2,388; sh: 2,050; perl: 557; pascal: 184; javascript: 163; ada: 36
file content (26 lines) | stat: -rw-r--r-- 550 bytes parent folder | download 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
 
int foo(int *arr, int size)
  // clang-format off
__CPROVER_requires(size > 0 && __CPROVER_is_fresh(arr, size))
__CPROVER_assigns(
  arr[0], arr[size-1];
  size >= 10: arr[5];
)
__CPROVER_ensures(arr[0] == 0 && arr[size-1] == 0)
__CPROVER_ensures(size >= 10 ==> arr[5] == __CPROVER_return_value)
  // clang-format on
  ;

int foo(int *arr, int size)
{
  arr[0] = 0;
  arr[size - 1] = 0;
  return size < 10 ? 0 : arr[5];
}

int main()
{
  int arr[10];
  int retval = foo(arr, 10);
  __CPROVER_assert(retval == arr[5], "should succeed");
  return 0;
}