// 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(mono_crafted_12__verifast_instrumented, true);
//@ ensures junk();
{
    //@ open_module(); 
unsigned int x = 0;
unsigned int y = 10000000;
unsigned int z=0;
while(x<y)
//@ invariant ((z % 2) == 0);
    {
		if(x>=5000000)
			z=z+2;
		x++;
	}
  __VERIFIER_assert(!(z%2));
  return 0;
}