// verifast_options{disable_overflow_check target:ILP32}


void reach_error(void) 
//@ requires false;
//@ ensures true;
{((void) sizeof ((0) ? 1 : 0), __extension__ ({ if (0) ; else __assert_fail ("0", "benchmark32_linear.c", 2, __extension__ __PRETTY_FUNCTION__); }));}extern int __VERIFIER_nondet_int(void);
//@ requires true;
//@ ensures true;
extern bool __VERIFIER_nondet_bool(void);
//@ requires true;
//@ ensures true;
void __VERIFIER_assert(int cond) 
//@ requires (cond != 0);
//@ ensures (cond != 0);
{  if (!cond) {
    reach_error();
  }
}
int main() 
//@ requires module(benchmark32_linear__verifast_instrumented, true);
//@ ensures junk();
{
    //@ open_module(); 
  int x = __VERIFIER_nondet_int();
  if (!(x==1 || x==2)) return 0;
while (__VERIFIER_nondet_bool())
//@ invariant (x < 3);
    {
    if(x==1) x=2;
    else if (x==2) x=1;
  }
  __VERIFIER_assert(x<=8);
  return 0;
}