1 files changed, 15 insertions, 2 deletions

diff --git a/src/uk/ac/ox/cs/pagoda/reasoner/IterativeRefinement.java b/src/uk/ac/ox/cs/pagoda/reasoner/IterativeRefinement.java
index ba6a4d4..447a92d 100644
--- a/src/uk/ac/ox/cs/pagoda/reasoner/IterativeRefinement.java
+++ b/src/uk/ac/ox/cs/pagoda/reasoner/IterativeRefinement.java
@@ -7,6 +7,7 @@ import org.semanticweb.owlapi.model.OWLOntology;
 import uk.ac.ox.cs.pagoda.constraints.BottomStrategy;
 import uk.ac.ox.cs.pagoda.constraints.UpperUnaryBottom;
 import uk.ac.ox.cs.pagoda.multistage.MultiStageQueryEngine;
+import uk.ac.ox.cs.pagoda.query.AnswerTuples;
 import uk.ac.ox.cs.pagoda.query.QueryRecord;
 import uk.ac.ox.cs.pagoda.reasoner.light.BasicQueryEngine;
 import uk.ac.ox.cs.pagoda.rules.GeneralProgram;
@@ -47,7 +48,13 @@ public class IterativeRefinement {
                                         return m_record.getRelevantOntology(); 
                                 }
                                 
-                                update = m_record.updateUpperBoundAnswers(tEngine.evaluate(m_record.getQueryText()));
+                                AnswerTuples ans = null; 
+                                try {
+                                        ans = tEngine.evaluate(m_record.getQueryText());
+                                        update = m_record.updateUpperBoundAnswers(ans);
+                                } finally {
+                                        if (ans != null) ans.dispose();
+                                }                               
                         } finally {
                                 tEngine.dispose();
                         }
@@ -78,7 +85,13 @@ public class IterativeRefinement {
                                         return m_record.getRelevantOntology(); 
                                 }
                                 
-                                update = m_record.updateUpperBoundAnswers(tEngine.evaluate(m_record.getQueryText()));
+                                AnswerTuples ans = null; 
+                                try {
+                                        ans = tEngine.evaluate(m_record.getQueryText()); 
+                                        update = m_record.updateUpperBoundAnswers(ans);
+                                } finally {
+                                        if (ans != null) ans.dispose();
+                                }
                         } finally {
                                 tEngine.dispose();
                         }