Internal action loop check primitive version

src/main/java/avatartranslator/AvatarExpressionSolver.java

src/main/java/avatartranslator/AvatarSpecification.java

src/main/java/avatartranslator/AvatarStateMachine.java

...ava/avatartranslator/modelchecker/AvatarModelChecker.java

...in/java/avatartranslator/modelchecker/SafetyProperty.java

...vatartranslator/modelchecker/SpecificationActionLoop.java

src/main/java/ui/window/JDialogAvatarModelChecker.java