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Nested Timed Automata with Frozen Clocks

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Book cover Formal Modeling and Analysis of Timed Systems (FORMATS 2015)

Part of the book series: Lecture Notes in Computer Science ((LNTCS,volume 9268))

Abstract

A nested timed automaton (NeTA) is a pushdown system whose control locations and stack alphabet are timed automata (TAs). A control location describes a working TA, and the stack presents a pile of interrupted TAs. In NeTAs, all local clocks of TAs proceed uniformly also in the stack. This paper extends NeTAs with frozen local clocks (NeTA-Fs). All clocks of a TA in the stack can be either frozen or proceeding when it is pushed. A NeTA-F also allows global clocks adding to local clocks in the working TA, which can be referred and/or updated from the working TA. We investigate the reachability of NeTA-Fs showing that (1) the reachability with a single global clock is decidable, and (2) the reachability with multiple global clocks is undecidable.

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Author information

Authors and Affiliations

  1. BASICS, School of Software, Shanghai Jiao Tong University, Shanghai, China

    Guoqiang Li

  2. Japan Advanced Institute of Science and Technology, Nomi, Japan

    Mizuhito Ogawa

  3. Graduate School of Information Science, Nagoya University, Nagoya, Japan

    Shoji Yuen

Authors
  1. Guoqiang Li
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  2. Mizuhito Ogawa
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  3. Shoji Yuen
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Corresponding author

Correspondence to Guoqiang Li .

Editor information

Editors and Affiliations

  1. University of Colorado, Boulder, Colorado, USA

    Sriram Sankaranarayanan

  2. University of Florence, Florence, Italy

    Enrico Vicario

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Li, G., Ogawa, M., Yuen, S. (2015). Nested Timed Automata with Frozen Clocks. In: Sankaranarayanan, S., Vicario, E. (eds) Formal Modeling and Analysis of Timed Systems. FORMATS 2015. Lecture Notes in Computer Science(), vol 9268. Springer, Cham. https://doi.org/10.1007/978-3-319-22975-1_13

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  • DOI: https://doi.org/10.1007/978-3-319-22975-1_13

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-22974-4

  • Online ISBN: 978-3-319-22975-1

  • eBook Packages: Computer ScienceComputer Science (R0)

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