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Automated verification of responsive protocols modeled by extended finite state machines

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Abstract

Along with advancement of communication systems, the demand for fault-tolerance and real-time performance for communication protocols continues to increase. Communication protocols which perform recovery from any abnormal state to a normal state are called self-stabilizing protocols. However, in these protocols, real-time recovery is not taken into consideration. This paper discusses verification of communication protocols which have self-stabilizing and timeliness properties, which are called responsive protocols.

Gouda et al. proposed a mathematical method to prove whether a given protocol specification satisfies the self-stabilizing property. However, this method is not automated and does not verify the timeliness property. This paper thus proposes an automated method for verification of responsive protocols. In this method, communication protocols are modeled by extended finite state machines and their states are represented by predicates. The self-stabilizing property is proven by verifying that sequences of such states which start from an arbitrary abnormal state converge in a normal state. Also, the timeliness property is proven by verifying that the convergence is done within a priori given time.

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Authors and Affiliations

  1. Department of Information and Computer Sciences, Faculty of Engineering Science, Osaka University, 560, Toyonakashi, Osaka, Japan

    Yoshiaki Kakuda, Tohru Kikuno & Kenichi Kawashima

Authors
  1. Yoshiaki Kakuda
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  2. Tohru Kikuno
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  3. Kenichi Kawashima
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Kakuda, Y., Kikuno, T. & Kawashima, K. Automated verification of responsive protocols modeled by extended finite state machines. Real-Time Syst 7, 275–289 (1994). https://doi.org/10.1007/BF01088522

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