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Reachability Analysis of Communicating Pushdown Systems

The reachability analysis of recursive programs that communicate asynchronously over reliable FIFO channels calls for restrictions to ensure decidability. Our first result characterizes communication topologies with a decidable reachability problem restricted to eager runs (i.e., runs where messages are either received immediately after being sent, or never received). The problem is EXPTIME-complete in the decidable case. The second result is a doubly exponential time algorithm for bounded context analysis in this setting, together with a matching lower bound. Both results extend and improve previous work from La Torre et al.

preprint2012arXivOpen access
Alexander HeussnerJérôme LerouxAnca MuschollGrégoire Sutre
Logic in Computer ScienceFormal Languages and Automata Theory
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Alexander HeussnerJérôme LerouxAnca MuschollGrégoire Sutre

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