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Modeling and Verification of a Protocol for Operational Support Using Coloured Petri Nets

  • Michael Westergaard
  • Fabrizio M. Maggi
Part of the Lecture Notes in Computer Science book series (LNCS, volume 6709)

Abstract

In this paper, we describe the modeling and analysis of a protocol for operational support during workflow enactment. Operational support provides online replies to questions such as “is my execution valid?” and “how do I end the execution in the fastest/cheapest way?”, and may be invoked multiple times for each execution.

Multiple applications (operational support providers) may be able to answer such questions, so a protocol supporting this should be able to handle multiple providers, maintain data between queries about the same execution, and discard information when it is no longer needed.

We present a coloured Petri net model of a protocol satisfying our requirements. The model is used both to make our requirements clear by building a model-based prototype before implementation and to verify that the devised protocol is correct.

We present techniques to make analysis of the large state-space of the model possible, including modeling techniques and an improved state representation for coloured Petri nets allowing explicit representation of state spaces with more than 108 states on a normal PC.

We briefly describe our implementation in the process mining tool ProM and how we have used it to improve an existing provider.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Michael Westergaard
    • 1
  • Fabrizio M. Maggi
    • 1
  1. 1.Department of Mathematics and Computer ScienceEindhoven University of TechnologyThe Netherlands

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