// 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", "ps4-ll.c", 3, "reach_error"); }
extern short __VERIFIER_nondet_short(void);//@ requires true; 
//@ ensures true;

extern void abort(void);
void assume_abort_if_not(int cond) //@ requires true; 
//@ ensures true;
{
  if(!cond) {abort();}
}
void __VERIFIER_assert(int cond) //@ requires (1 <= cond); 
//@ ensures (1 <= cond);
{
    if (!(cond)) {
    ERROR:
        {reach_error();}
    }
    return;
}

int main() //@ requires module(ps4_ll__verifast_instrumented_modified, true); 
//@ ensures junk();
{
    short k;
    long long y, x, c;
    k = __VERIFIER_nondet_short();

    y = 0;
    x = 0;
    c = 0;

    while (1)//@ invariant (((((c + (c * y)) == (y + (y * y))) && (((c * 2) + (c * y)) == ((y * 2) + (y * y)))) && ((((((y * y) * y) * y) + (y * y)) + (((y * y) * y) * 2)) == (x * 4))) && ((c < k) || ((y * y) == (k * y))));
 {
        __VERIFIER_assert(4*x - y*y*y*y - 2*y*y*y - y*y == 0);

        if (!(c < k))
            break;

        c = c + 1;
        y = y + 1;
        x = y * y * y + x;
    }
    __VERIFIER_assert(k*y - (y*y) == 0);
    __VERIFIER_assert(4*x - y*y*y*y - 2*y*y*y - y*y == 0);
    return 0;
}