// 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 (1 <= cond);
//@ ensures (1 <= cond);
{  if (!(cond)) {
      ERROR: {reach_error();abort();}
  }
  return;
}
int __VERIFIER_nondet_int();
//@ requires true;
//@ ensures true;
int main() 
//@ requires module(gsv2008__verifast_instrumented, true);
//@ ensures junk();
{
    //@ open_module(); 
    int x,y;
    x = -50;
    y = __VERIFIER_nondet_int();
    if (!(-1000 < y && y < 1000000)) return 0;
while (x < 0)
//@ invariant ((x < 0) || (0 < y));
    {
 x = x + y;
 y++;
    }
    __VERIFIER_assert(y > 0);
    return 0;
}