void abort() { }; void assume_abort_if_not(int cond) { if(!cond) {abort();} } /*@ requires ((cond != 0)) && (cond != 0); ensures (((cond != 0) && (SIZE == \old(SIZE)))) && (1); @*/ void __VERIFIER_assert(int cond) { if (!(cond)) { ERROR: {/*@ assert(0); */;abort();} } return; } int SIZE = 20000001; int __VERIFIER_nondet_int(); /*@ requires (1); ensures ((SIZE == \old(SIZE))); @*/ int main() { unsigned int n=0,i=0,k=0,j=0,l=0; unsigned int v3=0, v4=0; n = __VERIFIER_nondet_int(); if (!(n <= SIZE)) return 0; /*@ loop invariant ((l == ((((((long long) i + k) + j) + v3) + v4) % 4294967296))); @*/ while( l < n ) { if(!(l%5)) v3 = v3 + 1; else if(!(l%4)) v4 = v4 + 1; else if(!(l%3)) i = i + 1; else if(!(l%2)) j = j+1; else k = k+1; l = l+1; } __VERIFIER_assert((i+j+k+v4+v3) == l); return 0; }