// verifast_options{disable_overflow_check target:ILP32}


extern void abort(void);
//@ requires true;
//@ ensures true;
void reach_error()
//@ requires false;
//@ ensures true;
{}void __VERIFIER_assert(int cond) 
//@ requires (cond != 0);
//@ ensures (cond != 0);
{ if(!(cond)) { ERROR: {reach_error();abort();} } }int main() 
//@ requires module(mine2017_ex4_10__verifast_instrumented, true);
//@ ensures junk();
{
    //@ open_module(); 
  int v = 1;
while (v <= 50)
//@ invariant ((1 <= v) && (v <= 52));
    {
    __VERIFIER_assert(1 <= v);
    v += 2;
    __VERIFIER_assert(v <= 52);
  }
  __VERIFIER_assert(51 <= v);
  __VERIFIER_assert(v <= 52);
  return 0;
}