An exception says: workingInitScore > 0 (50)

[kentbill]

Hello, Teams.

I am using version 1.25.0, but when starting the plan through the SolverManager. run() method, the following prompt appears. I don't know what it means, and which direction should I check from?

java.lang.IllegalStateException: workingInitScore > 0 (50).
Maybe a custom move is removing more entities than were ever added?
at ai.timefold.solver.core.impl.score.director.AbstractScoreDirector.assertInitScoreZeroOrLess(AbstractScoreDirector.java:281)
at ai.timefold.solver.core.impl.score.director.AbstractScoreDirector.setWorkingSolution(AbstractScoreDirector.java:260)
at ai.timefold.solver.core.impl.score.director.stream.BavetConstraintStreamScoreDirector.setWorkingSolution(BavetConstraintStreamScoreDirector.java:58)
at ai.timefold.solver.core.impl.solver.scope.SolverScope.setWorkingSolutionFromBestSolution(SolverScope.java:335)
at ai.timefold.solver.core.impl.solver.AbstractSolver.solvingStarted(AbstractSolver.java:59)
at ai.timefold.solver.core.impl.solver.DefaultSolver.solvingStarted(DefaultSolver.java:222)
at ai.timefold.solver.core.impl.solver.DefaultSolver.solve(DefaultSolver.java:193)
at ai.timefold.solver.core.impl.solver.DefaultSolverJob.call(DefaultSolverJob.java:131)
at java.base/java.util.concurrent.FutureTask.run$$$capture(FutureTask.java:264)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java)

thanks in advanced!

[triceo]

Hello @kentbill - this is hard to say without actually seeing the code. Any chance you could share a reproducer?

[kentbill]

Thank you! @triceo , I think I got the cause. I'm using a PlanningListVariable and initialized it before starting the solver due to a mistake.