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Multi-core Reachability for Timed Automata

  • Conference paper
Formal Modeling and Analysis of Timed Systems (FORMATS 2012)

Part of the book series: Lecture Notes in Computer Science ((LNTCS,volume 7595))

Abstract

Model checking of timed automata is a widely used technique. But in order to take advantage of modern hardware, the algorithms need to be parallelized. We present a multi-core reachability algorithm for the more general class of well-structured transition systems, and an implementation for timed automata.

Our implementation extends the opaal tool to generate a timed automaton successor generator in c++, that is efficient enough to compete with the uppaal model checker, and can be used by the discrete model checker LTSmin, whose parallel reachability algorithms are now extended to handle subsumption of semi-symbolic states. The reuse of efficient lockless data structures guarantees high scalability and efficient memory use.

With experiments we show that opaal+LTSmin can outperform the current state-of-the-art, uppaal. The added parallelism is shown to reduce verification times from minutes to mere seconds with speedups of up to 40 on a 48-core machine. Finally, strict BFS and (surprisingly) parallel DFS search order are shown to reduce the state count, and improve speedups.

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Author information

Authors and Affiliations

  1. Formal Methods and Tools, University of Twente, The Netherlands

    Alfons Laarman & Jaco van de Pol

  2. Department of Computer Science, Aalborg University, Denmark

    Andreas E. Dalsgaard, Kim G. Larsen & Mads Chr. Olesen

Authors
  1. Andreas E. Dalsgaard
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  2. Alfons Laarman
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  3. Kim G. Larsen
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  4. Mads Chr. Olesen
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  5. Jaco van de Pol
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Editor information

Editors and Affiliations

  1. Department of Computer Science, University of Warwick, CV4 7AL, Coventry, UK

    Marcin Jurdziński

  2. Business Unit Safe and Autonomous Systems, Department of Safety and Security, AIT Austrian Institute of Technology, Donau-City-Str. 1, 1220, Vienna, Austria

    Dejan Ničković

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Dalsgaard, A.E., Laarman, A., Larsen, K.G., Olesen, M.C., van de Pol, J. (2012). Multi-core Reachability for Timed Automata. In: Jurdziński, M., Ničković, D. (eds) Formal Modeling and Analysis of Timed Systems. FORMATS 2012. Lecture Notes in Computer Science, vol 7595. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-33365-1_8

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  • DOI: https://doi.org/10.1007/978-3-642-33365-1_8

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-33364-4

  • Online ISBN: 978-3-642-33365-1

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