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/******************************************************************************
* Top contributors (to current version):
* Aina Niemetz, Gereon Kremer, Mathias Preiner
*
* This file is part of the cvc5 project.
*
* Copyright (c) 2009-2025 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 transcendental extension.
*/
#include <iostream>
#include <cvc5/cvc5.h>
using namespace std;
using namespace cvc5;
int main()
{
TermManager tm;
Solver slv(tm);
slv.setLogic("QF_NRAT");
Sort real = tm.getRealSort();
// Variables
Term x = tm.mkConst(real, "x");
Term y = tm.mkConst(real, "y");
// Helper terms
Term two = tm.mkReal(2);
Term pi = tm.mkPi();
Term twopi = tm.mkTerm(Kind::MULT, {two, pi});
Term ysq = tm.mkTerm(Kind::MULT, {y, y});
Term sinx = tm.mkTerm(Kind::SINE, {x});
// Formulas
Term x_gt_pi = tm.mkTerm(Kind::GT, {x, pi});
Term x_lt_pi = tm.mkTerm(Kind::LT, {x, twopi});
Term ysq_lt_sinx = tm.mkTerm(Kind::LT, {ysq, sinx});
slv.assertFormula(x_gt_pi);
slv.assertFormula(x_lt_pi);
slv.assertFormula(ysq_lt_sinx);
cout << "cvc5 should report UNSAT." << endl;
cout << "Result from cvc5 is: " << slv.checkSat() << endl;
return 0;
}
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