File: main.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 (58 lines) | stat: -rw-r--r-- 619 bytes parent folder | download | duplicates (2) 
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
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
 
#include <assert.h>

int j;

int lowerbound()
{
  return 0;
}

int upperbound()
{
  return 10;
}

void incr(int *i)
{
  (*i)++;
}

void body_1(int i)
{
  j = i;
}

void body_2(int *i)
{
  (*i)++;
  (*i)--;
}

int body_3(int *i)
{
  (*i)++;
  if(*i == 4)
    return 1;

  (*i)--;
  return 0;
}

int main()
{
  for(int i = lowerbound(); i < upperbound(); incr(&i))
    // clang-format off
    __CPROVER_loop_invariant(0 <= i && i <= 10)
    __CPROVER_loop_invariant(i != 0 ==> j + 1 == i)
    // clang-format on
    {
      body_1(i);

      if(body_3(&i))
        return 1;

      body_2(&i);
    }

  assert(j == 9);
}