extern void abort(void);

extern void __assert_fail (const char *__assertion, const char *__file,
      unsigned int __line, const char *__function)
     __attribute__ ((__nothrow__ , __leaf__)) __attribute__ ((__noreturn__));
extern void __assert_perror_fail (int __errnum, const char *__file,
      unsigned int __line, const char *__function)
     __attribute__ ((__nothrow__ , __leaf__)) __attribute__ ((__noreturn__));
extern void __assert (const char *__assertion, const char *__file, int __line)
     __attribute__ ((__nothrow__ , __leaf__)) __attribute__ ((__noreturn__));

void reach_error() { ((void) sizeof ((0) ? 1 : 0), __extension__ ({ if (0) ; else __assert_fail ("0", "assert.h", 3, __extension__ __PRETTY_FUNCTION__); })); }
extern void abort(void);
void assume_abort_if_not(int cond) {
  if(!cond) {abort();}
}
void __VERIFIER_assert(int cond) {
  if (!(cond)) {
      ERROR: {reach_error();abort();}
  }
  return;
}
int __VERIFIER_nondet_int();
int main() {
    int x,y,z,w;
    x = y = z = w = 0;
    while (__VERIFIER_nondet_int() && y < 10000) {
 if (__VERIFIER_nondet_int()) {
     x = x + 1;
     y = y + 100;
 } else if (__VERIFIER_nondet_int()) {
     if (x >= 4) {
  x = x + 1;
  y = y + 1;
     }
 } else if (y > 10*w && z >= 100*x) {
     y = -y;
 }
 w = w + 1;
 z = z + 10;
    }
    __VERIFIER_assert(x >= 4 && y <= 2);
    return 0;
}