Automatic generation of symbolic model for parameterized synchronous systems

  • Authors:
  • Wei-Wen Xu

  • Affiliations:
  • Department of Computer Science and Engineering, Shanghai Jiaotong University, Shanghai 200030. P.R. China and Laboratory of Computer Science, Institute of Software, The Chinese Academy of Sciences ...

  • Venue:
  • Journal of Computer Science and Technology
  • Year:
  • 2004

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Abstract

With the purpose of making the verification of parameterized system more general and easier, in this paper, a new and intuitive language PSL (Parameterized-system Specification Language) is proposed to specify a class of parameterized synchronous systems. From a PSL script, an automatic method is proposed to generate a constraint-based symbolic model. The model can concisely symbolically represent the collections of global states by counting the number of processes in a given state. Moreover, a theorem has been proved that there is a simulation relation between the original system and its symbolic model. Since the abstract and symbolic techniques are exploited in the symbolic model, state-explosion problem in traditional verification methods is efficiently avoided. Based on the proposed symbolic model, a reachability analysis procedure is implemented using ANSI C++ on UNIX platform. Thus, a complete tool for verifying the parameterized synchronous systems is obtained and tested for some cases. The experimental results show that the method is satisfactory.