extern int __VERIFIER_nondet_int(void);

int foo(int x,int y,int ytmp,int res){
res = 0;
while (x >= y && y > 0) {
        ytmp = y;
        while (ytmp != 0) {
            if (ytmp > 0)  {
                ytmp = ytmp - 1;
                x = x - 1;
            } else  {
                ytmp = ytmp + 1;
                x = x + 1;
            }
        }
        res = res + 1;
    }
return 0;
}