// verifast_options{disable_overflow_check target:ILP32}

extern void abort(void);//@ requires true; 
//@ ensures true;

extern void __assert_fail(const char *, const char *, unsigned int, const char *) __attribute__ ((__nothrow__ , __leaf__)) __attribute__ ((__noreturn__));
void reach_error() //@ requires false; 
//@ ensures true;
{ __assert_fail("0", "mono-crafted_12.c", 3, "reach_error"); }
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_modified, true); 
//@ ensures junk();
{
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;
}