// verifast_options{disable_overflow_check target:ILP32}
extern void abort(void);
//@ requires true;
//@ ensures true;


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


int main() 
//@ requires module(sum04_2__verifast_instrumented, true);
//@ ensures junk();
{
    //@ open_module(); 
  int i, sn=0;
for(i=1; i<=8; i++)
//@ invariant ((((((((((sn == 0) && (i == 1)) || ((7 == i) && (sn == 12))) || ((i == 3) && (sn == 4))) || ((14 == sn) && (i == 8))) || ((6 == sn) && (i == 4))) || ((i == 6) && (sn == 10))) || ((9 <= i) && (16 == sn))) || ((sn == 8) && (5 == i))) || ((i == 2) && (2 == sn)));
    {
    sn = sn + (2);
  }
  __VERIFIER_assert(sn==8*(2) || sn == 0);
 return 0; }