+#listener=gov.nasa.jpf.listener.VariableConflictTracker
+#listener=gov.nasa.jpf.listener.StateReducer
+#listener=gov.nasa.jpf.listener.StateReducerOld
+#listener=gov.nasa.jpf.listener.VariableConflictTracker,gov.nasa.jpf.listener.StateReducer
+#listener=gov.nasa.jpf.listener.ConflictTrackerOld
+#listener=gov.nasa.jpf.listener.DPORStateReducer
+listener=gov.nasa.jpf.listener.DPORStateReducer,gov.nasa.jpf.listener.ConflictTrackerOld