Reachability analysis of multithreaded software with asynchronous communication

Authors Ahmed Bouajjani, Javier Esparza, Stefan Schwoon, Jan Strejcek

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Ahmed Bouajjani
Javier Esparza
Stefan Schwoon
Jan Strejcek

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Ahmed Bouajjani, Javier Esparza, Stefan Schwoon, and Jan Strejcek. Reachability analysis of multithreaded software with asynchronous communication. In Software Verification: Infinite-State Model Checking and Static Program Analysis. Dagstuhl Seminar Proceedings, Volume 6081, pp. 1-18, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2006)


We introduce asynchronous dynamic pushdown networks (ADPN), a new model for multithreaded programs in which pushdown systems communicate via shared memory. ADPN generalizes both CPS (concurrent pushdown systems) and DPN (dynamic pushdown networks). We show that ADPN exhibit several advantages as a program model. Since the reachability problem for ADPN is undecidable even in the case without dynamic creation of processes, we address the bounded reachability problem, which considers only those computation sequences where the (index of the) thread accessing the shared memory is changed at most a fixed given number of times. We provide efficient algorithms for both forward and backward reachability analysis. The algorithms are based on automata techniques for symbolic representation of sets of configurations. This talk is based on joint work with Ahmed Bouajjani, Javier Esparza, and Jan Strejcek that appeared in FSTTCS 2005.
  • Model checking
  • pushdown systems
  • concurrency


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