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Visualising Larger State Spaces in ProB

  • Michael Leuschel
  • Edd Turner
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3455)

Abstract

ProB is an animator and model checker for the B method. It also allows to visualise the state space of a B machine in graphical way. This is often very useful and allows users to quickly spot whether the machine behaves as expected. However, for larger state spaces the visualisation quickly becomes difficult to grasp by users (and the computation of the graph layout takes considerable time). In this paper we present two relatively simple algorithms to often considerably reduce the complexity of the graphs, while still keeping relevant information. This makes it possible to visualise much larger state spaces and gives the user immediate feedback about the overall behaviour of a machine. The algorithms have been implemented within the ProB toolset and we highlight their potential on several examples. We also conduct a thorough experimentation of the algorithm on 47 B machines and analyse the results.

Keywords

Formal Methods B-Method Tool Support Model Checking Animation Visualisation Logic Programming 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  • Michael Leuschel
    • 1
    • 2
  • Edd Turner
    • 1
  1. 1.Department of Electronics and Computer ScienceUniversity of SouthamptonHighfield, SouthamptonUK
  2. 2.Institut für InformatikHeinrich-Heine Universität Düsseldorf 

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