[ https://issues.jboss.org/browse/DROOLS-200?page=com.atlassian.jira.plugin... ] Geoffrey De Smet commented on DROOLS-200: ----------------------------------------- Reproduced this way. I 've isolated it to the moves 224, 225, 226, 227: {code} 29-07-13 17:13:51 INFO - nstructionHeuristicSolverPhase - Phase (0) constructionHeuristic ended: step total (0), time spend (111), best score (0hard/-5soft). 29-07-13 17:13:51 TRACE - LocalSearchDecider - Move index (224), score (0hard/-6soft), accepted (true) for move (Conversation 4: Family 1, Student 4, Teacher 0, Timeslot 4 => Timeslot 0). 29-07-13 17:13:51 TRACE - LocalSearchDecider - Move index (225), score (0hard/-4soft), accepted (true) for move (Conversation 2: Family 1, Student 2, Teacher 0, Timeslot 2 => Timeslot 3). 29-07-13 17:13:51 TRACE - LocalSearchDecider - Move index (226), score (0hard/-4soft), accepted (true) for move (Conversation 0: Family 0, Student 0, Teacher 0, Timeslot 0 => Timeslot 1). Exception in thread "main" java.lang.IllegalStateException: Score corruption: the workingScore (0hard/-6soft) is not the uncorruptedScore (0hard/-5soft) after completedAction (Conversation 4: Family 1, Student 4, Teacher 0, Timeslot 1 => Timeslot 1): The corrupted scoreDirector has 1 ConstraintMatch(s) which are in excess (and should not be there): defaultpkg/familyCompact/level1/[FamilyEnd Family 1, Timeslot 2, FamilyStart Family 1, Timeslot 1]=-1 The corrupted scoreDirector has no ConstraintMatch(s) which are missing. Check your score constraints. at org.optaplanner.core.impl.score.director.AbstractScoreDirector.assertWorkingScoreFromScratch(AbstractScoreDirector.java:292) at org.optaplanner.core.impl.solver.scope.DefaultSolverScope.assertWorkingScoreFromScratch(DefaultSolverScope.java:109) at org.optaplanner.core.impl.phase.AbstractSolverPhaseScope.assertWorkingScoreFromScratch(AbstractSolverPhaseScope.java:132) at org.optaplanner.core.impl.localsearch.decider.LocalSearchDecider.processMove(LocalSearchDecider.java:153) at org.optaplanner.core.impl.localsearch.decider.LocalSearchDecider.doMove(LocalSearchDecider.java:138) at org.optaplanner.core.impl.localsearch.decider.LocalSearchDecider.decideNextStep(LocalSearchDecider.java:111) at org.optaplanner.core.impl.localsearch.DefaultLocalSearchSolverPhase.solve(DefaultLocalSearchSolverPhase.java:62) at org.optaplanner.core.impl.solver.DefaultSolver.runSolverPhases(DefaultSolver.java:190) at org.optaplanner.core.impl.solver.DefaultSolver.solve(DefaultSolver.java:155) {code} -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira