1 /*******************************************************************************
2 * SAT4J: a SATisfiability library for Java Copyright (C) 2004, 2012 Artois University and CNRS
3 *
4 * All rights reserved. This program and the accompanying materials
5 * are made available under the terms of the Eclipse Public License v1.0
6 * which accompanies this distribution, and is available at
7 * http://www.eclipse.org/legal/epl-v10.html
8 *
9 * Alternatively, the contents of this file may be used under the terms of
10 * either the GNU Lesser General Public License Version 2.1 or later (the
11 * "LGPL"), in which case the provisions of the LGPL are applicable instead
12 * of those above. If you wish to allow use of your version of this file only
13 * under the terms of the LGPL, and not to allow others to use your version of
14 * this file under the terms of the EPL, indicate your decision by deleting
15 * the provisions above and replace them with the notice and other provisions
16 * required by the LGPL. If you do not delete the provisions above, a recipient
17 * may use your version of this file under the terms of the EPL or the LGPL.
18 *
19 * Based on the original MiniSat specification from:
20 *
21 * An extensible SAT solver. Niklas Een and Niklas Sorensson. Proceedings of the
22 * Sixth International Conference on Theory and Applications of Satisfiability
23 * Testing, LNCS 2919, pp 502-518, 2003.
24 *
25 * See www.minisat.se for the original solver in C++.
26 *
27 * Contributors:
28 * CRIL - initial API and implementation
29 *******************************************************************************/
30 package org.sat4j;
31
32 import static org.junit.Assert.assertTrue;
33
34 import java.io.FileNotFoundException;
35 import java.io.IOException;
36
37 import org.junit.Before;
38 import org.junit.Test;
39 import org.sat4j.core.VecInt;
40 import org.sat4j.minisat.SolverFactory;
41 import org.sat4j.reader.DimacsReader;
42 import org.sat4j.reader.ParseFormatException;
43 import org.sat4j.reader.Reader;
44 import org.sat4j.specs.ContradictionException;
45 import org.sat4j.specs.IConstr;
46 import org.sat4j.specs.ISolver;
47 import org.sat4j.specs.TimeoutException;
48 import org.sat4j.tools.xplain.Xplain;
49
50 public class BugSAT26 {
51 private Xplain<ISolver> xplain;
52
53 @Before
54 public void setUp() throws FileNotFoundException, ParseFormatException,
55 IOException, ContradictionException {
56 this.xplain = new Xplain<ISolver>(SolverFactory.newDefault());
57 this.xplain.setTimeout(3600); // 1 hour timeout
58 Reader reader = new DimacsReader(this.xplain);
59 String dimacs = "src/test/testfiles/eb42.dimacs";
60 reader.parseInstance(dimacs);
61 }
62
63 @Test
64 public void testConsecutiveCallToSolver() throws ContradictionException,
65 TimeoutException {
66 assertTrue(this.xplain.isSatisfiable());
67 int i = 0;
68 while (i < 5) {
69 VecInt assumption = new VecInt();
70 assumption.push(1187);
71 IConstr constr = this.xplain.addClause(assumption);
72 this.xplain.removeConstr(constr);
73 i++;
74 }
75 }
76 }