cvc5/examples/api/cpp/extract.cpp

/******************************************************************************
 * Top contributors (to current version):
 *   Aina Niemetz, Makai Mann, Clark Barrett
 *
 * This file is part of the cvc5 project.
 *
 * Copyright (c) 2009-2021 by the authors listed in the file AUTHORS
 * in the top-level source directory and their institutional affiliations.
 * All rights reserved.  See the file COPYING in the top-level source
 * directory for licensing information.
 * ****************************************************************************
 *
 * A simple demonstration of the solving capabilities of the cvc5
 * bit-vector solver.
 *
 */

#include <cvc5/cvc5.h>

#include <iostream>

using namespace std;
using namespace cvc5::api;

int main()
{
  Solver slv;
  slv.setLogic("QF_BV"); // Set the logic

  Sort bitvector32 = slv.mkBitVectorSort(32);

  Term x = slv.mkConst(bitvector32, "a");

  Op ext_31_1 = slv.mkOp(BITVECTOR_EXTRACT, 31, 1);
  Term x_31_1 = slv.mkTerm(ext_31_1, x);

  Op ext_30_0 = slv.mkOp(BITVECTOR_EXTRACT, 30, 0);
  Term x_30_0 = slv.mkTerm(ext_30_0, x);

  Op ext_31_31 = slv.mkOp(BITVECTOR_EXTRACT, 31, 31);
  Term x_31_31 = slv.mkTerm(ext_31_31, x);

  Op ext_0_0 = slv.mkOp(BITVECTOR_EXTRACT, 0, 0);
  Term x_0_0 = slv.mkTerm(ext_0_0, x);

  Term eq = slv.mkTerm(EQUAL, x_31_1, x_30_0);
  cout << " Asserting: " << eq << endl;
  slv.assertFormula(eq);

  Term eq2 = slv.mkTerm(EQUAL, x_31_31, x_0_0);
  cout << " Check entailment assuming: " << eq2 << endl;
  cout << " Expect ENTAILED. " << endl;
  cout << " cvc5: " << slv.checkEntailed(eq2) << endl;

  return 0;
}