Only allow a specific amount of symbolic values per astnode.

Throw a SymbolicBoundReachedException if amount is reached for a node and exit with status 'UNKNOWN'.

To work with current interfaces, SymbolicBoundReachedException has to be a subtype of UnrecognizedCodeException.




git-svn-id: https://svn.sosy-lab.org/software/cpachecker/branches/symbolic@15003 4712c6d2-40bb-43ae-aa4b-fec3f1bdfe4c