java.lang.IllegalArgumentException: argument type mismatch
	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:498)
	at it.unical.mat.embasp.languages.Mapper.populateObject(Mapper.java:118)
	at it.unical.mat.embasp.languages.Mapper.getObject(Mapper.java:59)
	at it.unical.mat.embasp.languages.asp.AnswerSet.getAtoms(AnswerSet.java:57)
	at it.unical.reversi.presenter.ai.EasyMoveStrategy.findMove(EasyMoveStrategy.java:117)
	at it.unical.reversi.presenter.ai.AIPresenter.findMove(AIPresenter.java:19)
	at it.unical.reversi.model.AIModel$1.run(AIModel.java:41)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)