Static analysis and family-based model checking of featured transition systems with VMC

A Featured Transition System (FTS) is a formalism for modeling variability in configurable system behavior. The behavior of all variants (products) is modeled in a single compact FTS by associating the possibility to perform an action and transition from one state to another with feature expressions that condition the execution of an action in specific variants. We present a front-end for the research tool VMC. The resulting toolchain allows a modeler to analyze an FTS for ambiguities (dead or false optional transitions and hidden deadlock states), transform an ambiguous FTS into an unambiguous one, and perform an efficient kind of family-based verification of an FTS without hidden deadlock states. We use benchmarks from the literature to demonstrate the novelties offered by the toolchain.