// verifast_options{disable_overflow_check target:ILP32}
// This file is part of the SV-Benchmarks collection of verification tasks:
// https://github.com/sosy-lab/sv-benchmarks
//
// This file was part of CPAchecker,
// a tool for configurable software verification:
// https://cpachecker.sosy-lab.org
//
// SPDX-FileCopyrightText: 2007-2020 Dirk Beyer <https://www.sosy-lab.org>
//
// SPDX-License-Identifier: Apache-2.0

void reach_error()
//@ requires false;
//@ ensures true;
{}
int main() 
//@ requires module(nested_2__verifast_instrumented, true);
//@ ensures junk();
{
    //@ open_module(); 
	int a = 6;
	int b = 6;


for(a = 0; a < 6; ++a)
//@ invariant ((b == 6) && (a <= 6));
    {
for(b = 0; b < 6; ++b)
//@ invariant ((b <= 6) && (a <= 5));
    {

		}
	}
	if(!(a == 6 && b == 6  )) {
		reach_error();
	}
	return 1;
}