// verifast_options{disable_overflow_check target:ILP32}
extern void abort(void);
//@ requires true;
//@ ensures true;
void reach_error()
//@ requires false;
//@ ensures true;
{}void assume_abort_if_not(int cond) 
//@ requires true;
//@ ensures true;
{  if(!cond) {abort();}
}

void __VERIFIER_assert(int cond) 
//@ requires (cond != 0);
//@ ensures (cond != 0);
{  if (!(cond)) {
    ERROR: {reach_error();abort();}
  }
  return;
}
extern bool __VERIFIER_nondet_bool();
//@ requires true;
//@ ensures true;
extern int __VERIFIER_nondet_int();
//@ requires true;
//@ ensures true;

void foo()

//@ requires true;
//@ ensures true;
{
  int y=0;
  bool c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool();
  if (c1) y++;
  if (c2) y--;
  else y+=10;
}

int main()

//@ requires module(trex04__verifast_instrumented, true);
//@ ensures junk();
{
    //@ open_module(); 

  int d = 1;
  int x = __VERIFIER_nondet_int();
  if (!(x <= 1000000 && x >= -1000000)) return 0;
  bool c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool();

  if (c1) d = d - 1;
  if (c2) foo();

  c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool();

  if (c1) foo();
  if (c2) d = d - 1;
  
  while(x>0)
  {
    x=x-d;
  }

  __VERIFIER_assert(x<=0);
 return 0; }