// 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 unsigned int __VERIFIER_nondet_uint(void); //@ 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(eq2__verifast_instrumented, true); //@ ensures junk(); { //@ open_module(); unsigned int w = __VERIFIER_nondet_uint(); unsigned int x = w; unsigned int y = w + 1; unsigned int z = x + 1; while (__VERIFIER_nondet_uint()) //@ invariant ((z <= y) && (z == y)); { y++; z++; } __VERIFIER_assert(y == z); return 0; }