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/********************* */
/*! \file theory_bv_white.h
** \verbatim
** Top contributors (to current version):
** Liana Hadarean, Aina Niemetz, Mathias Preiner
** This file is part of the CVC4 project.
** Copyright (c) 2009-2018 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 [[ Add one-line brief description here ]]
**
** [[ Add lengthier description here ]]
** \todo document this file
**/
#include <cxxtest/TestSuite.h>
#include "theory/theory.h"
#include "smt/smt_engine.h"
#include "smt/smt_engine_scope.h"
#include "theory/bv/theory_bv.h"
#include "theory/bv/bitblast/eager_bitblaster.h"
#include "expr/node.h"
#include "expr/node_manager.h"
#include "context/context.h"
#include "theory/theory_test_utils.h"
#include <vector>
using namespace CVC4;
using namespace CVC4::theory;
using namespace CVC4::theory::bv;
using namespace CVC4::theory::bv::utils;
using namespace CVC4::expr;
using namespace CVC4::context;
using namespace CVC4::smt;
using namespace std;
class TheoryBVWhite : public CxxTest::TestSuite {
ExprManager* d_em;
NodeManager* d_nm;
SmtEngine* d_smt;
SmtScope* d_scope;
public:
TheoryBVWhite() {}
void setUp() {
d_em = new ExprManager();
d_nm = NodeManager::fromExprManager(d_em);
d_smt = new SmtEngine(d_em);
d_scope = new SmtScope(d_smt);
}
void tearDown() {
delete d_scope;
delete d_smt;
delete d_em;
}
void testBitblasterCore() {
d_smt->setOption("bitblast", SExpr("eager"));
EagerBitblaster* bb = new EagerBitblaster(dynamic_cast<TheoryBV*>(
d_smt->d_theoryEngine->d_theoryTable[THEORY_BV]));
Node x = d_nm->mkVar("x", d_nm->mkBitVectorType(16));
Node y = d_nm->mkVar("y", d_nm->mkBitVectorType(16));
Node x_plus_y = d_nm->mkNode(kind::BITVECTOR_PLUS, x, y);
Node one = d_nm->mkConst<BitVector>(BitVector(16, 1u));
Node x_shl_one = d_nm->mkNode(kind::BITVECTOR_SHL, x, one);
Node eq = d_nm->mkNode(kind::EQUAL, x_plus_y, x_shl_one);
Node not_x_eq_y = d_nm->mkNode(kind::NOT, d_nm->mkNode(kind::EQUAL, x, y));
bb->bbFormula(eq);
bb->bbFormula(not_x_eq_y);
bool res = bb->solve();
TS_ASSERT (res == false);
delete bb;
}
void testMkUmulo() {
d_smt->setOption("incremental", SExpr("true"));
for (size_t w = 1; w < 16; ++w) {
d_smt->push();
Node x = d_nm->mkVar("x", d_nm->mkBitVectorType(w));
Node y = d_nm->mkVar("y", d_nm->mkBitVectorType(w));
Node zx = mkConcat(mkZero(w), x);
Node zy = mkConcat(mkZero(w), y);
Node mul = d_nm->mkNode(kind::BITVECTOR_MULT, zx, zy);
Node lhs =
d_nm->mkNode(kind::DISTINCT, mkExtract(mul, 2 * w - 1, w), mkZero(w));
Node rhs = mkUmulo(x, y);
Node eq = d_nm->mkNode(kind::DISTINCT, lhs, rhs);
d_smt->assertFormula(eq.toExpr());
Result res = d_smt->checkSat();
TS_ASSERT(res.isSat() == Result::UNSAT);
d_smt->pop();
}
}
};/* class TheoryBVWhite */
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