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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.assertFalse;
33  
34  import org.junit.Before;
35  import org.junit.Test;
36  import org.sat4j.core.VecInt;
37  import org.sat4j.minisat.SolverFactory;
38  import org.sat4j.specs.ContradictionException;
39  import org.sat4j.specs.ISolver;
40  import org.sat4j.specs.TimeoutException;
41  
42  public class BugSAT18 {
43  
44      private ISolver solver;
45  
46      @Before
47      public void setup() throws ContradictionException {
48          this.solver = SolverFactory.newDefault();
49          this.solver.setTimeout(15);
50          this.solver.addClause(new VecInt(new int[] { 1 }));
51          this.solver.addClause(new VecInt(new int[] { -1, 2 }));
52          this.solver.addClause(new VecInt(new int[] { -1, 3 }));
53          this.solver.addClause(new VecInt(new int[] { -2, 1 }));
54          this.solver.addClause(new VecInt(new int[] { -4, 1 }));
55          this.solver.addClause(new VecInt(new int[] { -3, 1 }));
56          this.solver.addClause(new VecInt(new int[] { -3, 5 }));
57          this.solver.addClause(new VecInt(new int[] { -5, 3 }));
58          this.solver.addClause(new VecInt(new int[] { 6 }));
59          this.solver.addClause(new VecInt(new int[] { -7 }));
60          this.solver.addClause(new VecInt(new int[] { 2, 5, 4, 6 }));
61  
62      }
63  
64      @Test
65      public void testAll() throws ContradictionException, TimeoutException {
66  
67          assertFalse(this.solver.isSatisfiable(new VecInt(new int[] { 4, -3 })));
68          assertFalse(this.solver.isSatisfiable(new VecInt(new int[] { 5, -3 })));
69  
70      }
71  
72      @Test
73      public void testSingle1() throws ContradictionException, TimeoutException {
74  
75          assertFalse(this.solver.isSatisfiable(new VecInt(new int[] { 4, -3 })));
76  
77      }
78  
79      @Test
80      public void testSingle2() throws ContradictionException, TimeoutException {
81  
82          assertFalse(this.solver.isSatisfiable(new VecInt(new int[] { 5, -3 })));
83  
84      }
85  
86  }