Approximating the Behaviour of Graph Transformation Systems

  • Authors:
  • Paolo Baldan;Barbara König

  • Affiliations:
  • -;-

  • Venue:
  • ICGT '02 Proceedings of the First International Conference on Graph Transformation
  • Year:
  • 2002

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Abstract

We propose a technique for the analysis of graph transformation systems based on the construction of finite structures approximating the behaviour of such systems with arbitrary accuracy. Following a classical approach, one can construct a chain of finite under-approximations (k-truncations) of the Winskel's style unfolding of a graph grammar. More interestingly, also a chain of finite over-approximations (k-coverings) of the unfolding can be constructed and both chains converge (in a categorical sense) to the full unfolding. The finite over- and under-approximations can be used to check properties of a graph transformation system, like safety and liveness properties, expressed in (meaningful fragments of) the modal 碌-calculus. This is done by embedding our approach in the general framework of abstract interpretation.