Reachability Analysis of Multithreaded Software with Asynchronous Communication

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Authors

BOUAJJANI Ahmed ESPARZA Javier SCHWOON Stefan STREJČEK Jan

Year of publication 2005
Type Article in Proceedings
Conference FSTTCS 2005: Foundations of Software Technology and Theoretical Computer Science, 25th International Conference
MU Faculty or unit

Faculty of Informatics

Citation
Field Informatics
Keywords bounded reachability; symbolic reachability; asynchronous dynamic pushdown network
Description 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) [QR05] and DPN (dynamic pushdown networks) [BMOT05]. 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 [QR05], 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.
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