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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.pb;
31  
32  import java.math.BigInteger;
33  
34  import org.junit.Before;
35  import org.junit.Test;
36  import org.sat4j.core.Vec;
37  import org.sat4j.core.VecInt;
38  import org.sat4j.specs.ContradictionException;
39  import org.sat4j.specs.ISolver;
40  import org.sat4j.specs.IVecInt;
41  import org.sat4j.specs.TimeoutException;
42  import org.sat4j.tools.ModelIterator;
43  
44  public class TestGlobalTimeoutForOptimalModelEnumeration {
45  
46      private ISolver solver;
47  
48      @Before
49      public void setUp() throws ContradictionException {
50          PseudoOptDecorator pbsolver = new PseudoOptDecorator(
51                  SolverFactory.newDefault());
52          IVecInt clause = new VecInt();
53          pbsolver.newVar(1000);
54          for (int i = 1; i <= 1000; i++) {
55              clause.push(-i);
56          }
57          pbsolver.addClause(clause);
58          Vec<BigInteger> weights = new Vec<BigInteger>();
59          for (int i = 1; i <= 1000; i++) {
60              weights.push(BigInteger.valueOf(5));
61          }
62          pbsolver.setObjectiveFunction(new ObjectiveFunction(clause, weights));
63          this.solver = new ModelIterator(pbsolver);
64      }
65  
66      @Test(expected = TimeoutException.class, timeout = 3000)
67      public void testTimeoutOnSeconds() throws TimeoutException {
68          this.solver.setTimeout(2);
69          while (this.solver.isSatisfiable()) {
70              this.solver.model(); // needed to
71              // discard
72              // that
73              // solution
74          }
75      }
76  
77      @Test(expected = TimeoutException.class, timeout = 5000)
78      public void testTimeoutOnConflicts() throws TimeoutException {
79          this.solver.setTimeoutOnConflicts(1000);
80          while (this.solver.isSatisfiable()) {
81              this.solver.model(); // needed to discard that solution
82          }
83      }
84  }