java.lang.IllegalStateException: Score corruption for 'employeeWeeklyHours' rule -------------------------------------------------------------------------------- Key: DROOLS-668 URL: https://issues.jboss.org/browse/DROOLS-668 Project: Drools Issue Type: Bug Affects Versions: 6.2.0.CR2 Environment: Windows 8 x64, java version 8 (1.8.0_25), IntelliJ IDE Community Edition Reporter: Marco Alesiani Assignee: Mario Fusco Labels: new_and_noteworthy Attachments: reproducer.zip, reproducer.zip I've been getting the error {quote} Exception in thread "main" java.lang.IllegalStateException: Score corruption: the workingScore (-1300hard/0soft) is not the uncorruptedScore (-1320hard/0soft) after completedAction ([ShiftAssignment for shift: MONDAY, from 8:0 to 8:20, assigned employee: null => null, ShiftAssignment for shift: MONDAY, from 8:0 to 8:20, assigned employee: null => null]): Score corruption analysis could not be generated because either corrupted constraintMatchEnabled (true) or uncorrupted constraintMatchEnabled (false) is disabled. Check your score constraints manually. at org.optaplanner.core.impl.score.director.AbstractScoreDirector.assertWorkingScoreFromScratch(AbstractScoreDirector.java:296) at org.optaplanner.core.impl.phase.scope.AbstractPhaseScope.assertExpectedUndoMoveScore(AbstractPhaseScope.java:139) at org.optaplanner.core.impl.constructionheuristic.decider.ConstructionHeuristicDecider.doMove(ConstructionHeuristicDecider.java:108) at org.optaplanner.core.impl.constructionheuristic.decider.ConstructionHeuristicDecider.decideNextStep(ConstructionHeuristicDecider.java:77) at org.optaplanner.core.impl.constructionheuristic.DefaultConstructionHeuristicPhase.solve(DefaultConstructionHeuristicPhase.java:67) at org.optaplanner.core.impl.solver.DefaultSolver.runPhases(DefaultSolver.java:213) at org.optaplanner.core.impl.solver.DefaultSolver.solve(DefaultSolver.java:176) at TeRo.TeRoAppMain.main(TeRoAppMain.java:25) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:483) at com.intellij.rt.execution.application.AppMain.main(AppMain.java:134) {quote} when executing the following rule with an EasyScoreCalculator {code:drl} // Employees are forced to work the exact amount specified in their contracts rule "employeeWeeklyHours" when $employee : Employee( $weeklyHours : weeklyHours, weeklyHoursAreMandatory == true ) $totalWorkAssignedMinutes : Number(intValue != $weeklyHours * 60) from accumulate( $shiftAssignment : ShiftAssignment( $shift : shift ) and eval($shiftAssignment.employeeIsAssigned($employee) == true) and Shift(this == $shift, $shiftTime : shiftTime), sum($shiftTime.getShiftTotalMinutes()) ) then scoreHolder.addHardConstraintMatch( kcontext, -1 * Math.abs($totalWorkAssignedMinutes.intValue() - $weeklyHours * 60) ); end {code}