File: main.c

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// invar_check_04

// This test checks the handling of break by loop invariants.
// This test is expected to fail along the code path where r is even before
// entering the loop.

#include <assert.h>

int main()
{
  int r;
  __CPROVER_assume(r >= 0);

  while(r>0)
    __CPROVER_loop_invariant(r >= 0)
  { 
    --r;
    if (r <= 1)
    {
      break;
    }
    else
    {
      --r;
    }
  }
  assert(r == 0);

  return 0;
}