int __return_main;
void abort();
void abort() { };
                                                                                      
int __VERIFIER_nondet_int();
/*@ 
    requires (cond != 0);
    ensures (1);
@*/
void __VERIFIER_assert(int cond);
int main();
int __return_107;
 int main()
//@ assert (((((main__x % 3) <= 0) && (\old(__return_107) == __return_107)) || ((main__y == 1) && (\old(__return_107) == __return_107))));
 {
 unsigned int main__x = __VERIFIER_nondet_int();
 unsigned int main__y = 1;
 label_75:; 
 int main____CPAchecker_TMP_0;
 main____CPAchecker_TMP_0 = __VERIFIER_nondet_int();
 if (!(main____CPAchecker_TMP_0 == 0))
 {
 if ((main__x % 3) == 1)
 {
 main__x = main__x + 2;
 main__y = 0;
 label_87:; 
 goto label_75;
 }
 else 
 {
 if ((main__x % 3) == 2)
 {
 main__x = main__x + 1;
 main__y = 0;
 goto label_87;
 }
 else 
 {
 int main____CPAchecker_TMP_1;
 main____CPAchecker_TMP_1 = __VERIFIER_nondet_int();
 if (!(main____CPAchecker_TMP_1 == 0))
 {
 main__x = main__x + 4;
 main__y = 1;
 goto label_87;
 }
 else 
 {
 main__x = main__x + 5;
 main__y = 1;
 goto label_87;
 }
 }
 }
 }
 else 
 {
 if (main__y == 0)
 {
 {
 int __tmp_1;
 __tmp_1 = (main__x % 3) == 0;
 int __VERIFIER_assert__cond;
 __VERIFIER_assert__cond = __tmp_1;
 if (__VERIFIER_assert__cond == 0)
 {
 {/*@ assert(0); */;}
 return __return_main;
 }
 else 
 {
  __return_107 = 0;
 return __return_107;
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }