Mohajerani, S., Malik, R., & Fabian, M. (2014). An algorithm for compositional nonblocking verification of extended finite-state machines. IFAC Proceedsing Volumes, 47(2), 237-382. http://doi.org/10.3182/20140514-3-FR-4046.00039
Permanent Research Commons link: http://hdl.handle.net/10289/9016
This paper describes an approach for compositional nonblocking verification of discrete event systems modelled as extended finite-state machines (EFSM). Previous results about finite-state machines in lock-step synchronisation are generalised and applied to EFSMs communicating via shared variables. This gives rise to an EFSM-based conflict check algorithm that composes EFSMs gradually and partially unfolds variables as needed. At each step, components are simplified using conflict-equivalence preserving abstraction. The algorithm has been implemented in the discrete event systems tool Supremica. The paper presents experimental results for the verification of two scalable manufacturing system models, and shows that the EFSM-based algorithm verifies some large models faster than previously used methods.
This is an author’s accepted version of a paper published in the Proceedings of the Twelfth International Workshop on Discrete Event Systems. © 2014 IFAC