Ran into problem with the AbstractModelChecker being declared const for the model check.
I use it for the subsystem generation and tell it what the current subsystem is. so I have two options:
1. Carry the subsystem as argument through all checking functions of the complete checking tree
2. Store the subsystem in the checker and use it in checkAp to induce the correct result back through the tree.
In the original implementation I used option 2.
But that does only work if it is not constant.
Former-commit-id: 8a833cc05e
masawei