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/********************* */
/*! \file extract.cpp
** \verbatim
** Top contributors (to current version):
** Clark Barrett, Aina Niemetz
** This file is part of the CVC4 project.
** Copyright (c) 2009-2020 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.\endverbatim
**
** \brief A simple demonstration of the solving capabilities of the CVC4
** bit-vector solver.
**
**/
#include <iostream>
#include <cvc4/cvc4.h>
using namespace std;
using namespace CVC4;
int main() {
ExprManager em;
SmtEngine smt(&em);
smt.setLogic("QF_BV"); // Set the logic
Type bitvector32 = em.mkBitVectorType(32);
Expr x = em.mkVar("a", bitvector32);
Expr ext_31_1 = em.mkConst(CVC4::BitVectorExtract(31,1));
Expr x_31_1 = em.mkExpr(ext_31_1, x);
Expr ext_30_0 = em.mkConst(CVC4::BitVectorExtract(30,0));
Expr x_30_0 = em.mkExpr(ext_30_0, x);
Expr ext_31_31 = em.mkConst(CVC4::BitVectorExtract(31,31));
Expr x_31_31 = em.mkExpr(ext_31_31, x);
Expr ext_0_0 = em.mkConst(CVC4::BitVectorExtract(0,0));
Expr x_0_0 = em.mkExpr(ext_0_0, x);
Expr eq = em.mkExpr(kind::EQUAL, x_31_1, x_30_0);
cout << " Asserting: " << eq << endl;
smt.assertFormula(eq);
Expr eq2 = em.mkExpr(kind::EQUAL, x_31_31, x_0_0);
cout << " Querying: " << eq2 << endl;
cout << " Expect entailed. " << endl;
cout << " CVC4: " << smt.checkEntailed(eq2) << endl;
return 0;
}
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