// 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 // // SPDX-FileCopyrightText: 2019 Dirk Beyer and Matthias Dangl // // SPDX-License-Identifier: Apache-2.0 extern void abort(void); //@ requires true; //@ ensures true; void reach_error() //@ requires false; //@ ensures true; {}extern int __VERIFIER_nondet_int(); //@ requires true; //@ ensures true; void __VERIFIER_assert(int cond) //@ requires (cond != 0); //@ ensures (cond != 0); { if (!(cond)) { ERROR: {reach_error();abort();} } return; } int main(void) //@ requires module(even__verifast_instrumented, true); //@ ensures junk(); { //@ open_module(); unsigned int x = 0; while (__VERIFIER_nondet_int()) //@ invariant ((x % 2) == 0); { x += 2; } __VERIFIER_assert(!(x % 2)); return 0; }