when strengthening CEX-check with assumption from automaton, for now, ignore assumptions with incomplete type information (automaton is missing information about callstack of functions, hence, not all types can be resolved)

git-svn-id: https://svn.sosy-lab.org/software/cpachecker/trunk@14092 4712c6d2-40bb-43ae-aa4b-fec3f1bdfe4c