examples/api/extract-new.cpp

   1 /*********************                                                        */
   2 /*! \file extract-new.cpp
   3  ** \verbatim
   4  ** Top contributors (to current version):
   5  **   Aina Niemetz, Makai Mann
   6  ** This file is part of the CVC4 project.
   7  ** Copyright (c) 2009-2019 by the authors listed in the file AUTHORS
   8  ** in the top-level source directory) and their institutional affiliations.
   9  ** All rights reserved.  See the file COPYING in the top-level source
  10  ** directory for licensing information.\endverbatim
  11  **
  12  ** \brief A simple demonstration of the solving capabilities of the CVC4
  13  ** bit-vector solver.
  14  **
  15  **/
  16
  17 #include <iostream>
  18
  19 #include <cvc4/api/cvc4cpp.h>
  20
  21 using namespace std;
  22 using namespace CVC4::api;
  23
  24 int main()
  25 {
  26   Solver slv;
  27   slv.setLogic("QF_BV"); // Set the logic
  28
  29   Sort bitvector32 = slv.mkBitVectorSort(32);
  30
  31   Term x = slv.mkConst(bitvector32, "a");
  32
  33   OpTerm ext_31_1 = slv.mkOpTerm(BITVECTOR_EXTRACT_OP, 31, 1);
  34   Term x_31_1 = slv.mkTerm(BITVECTOR_EXTRACT, ext_31_1, x);
  35
  36   OpTerm ext_30_0 = slv.mkOpTerm(BITVECTOR_EXTRACT_OP, 30, 0);
  37   Term x_30_0 = slv.mkTerm(BITVECTOR_EXTRACT, ext_30_0, x);
  38
  39   OpTerm ext_31_31 = slv.mkOpTerm(BITVECTOR_EXTRACT_OP, 31, 31);
  40   Term x_31_31 = slv.mkTerm(BITVECTOR_EXTRACT, ext_31_31, x);
  41
  42   OpTerm ext_0_0 = slv.mkOpTerm(BITVECTOR_EXTRACT_OP, 0, 0);
  43   Term x_0_0 = slv.mkTerm(BITVECTOR_EXTRACT, ext_0_0, x);
  44
  45   Term eq = slv.mkTerm(EQUAL, x_31_1, x_30_0);
  46   cout << " Asserting: " << eq << endl;
  47   slv.assertFormula(eq);
  48
  49   Term eq2 = slv.mkTerm(EQUAL, x_31_31, x_0_0);
  50   cout << " Check validity assuming: " << eq2 << endl;
  51   cout << " Expect valid. " << endl;
  52   cout << " CVC4: " << slv.checkValidAssuming(eq2) << endl;
  53
  54   return 0;
  55 }