Resource-Aware Verification Using Randomized Exploration of Large State Spaces

  • Authors:
  • Nazha Abed;Stavros Tripakis;Jean-Marc Vincent

  • Affiliations:
  • LIG, Montbonnot Saint-Martin, France 38330;Cadence Laboratories, Berkeley, CA 94704;LIG, Montbonnot Saint-Martin, France 38330

  • Venue:
  • SPIN '08 Proceedings of the 15th international workshop on Model Checking Software
  • Year:
  • 2008
  • Uniform Monte-Carlo model checking

    FASE'11/ETAPS'11 Proceedings of the 14th international conference on Fundamental approaches to software engineering: part of the joint European conferences on theory and practice of software

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Abstract

Exhaustive verification often suffers from the state-explosion problem, where the reachable state space is too large to fit in main memory. For this reason, and because of disk swapping, once the main memory is full very little progress is made, and the process is not scalable. To alleviate this, partial verification methods have been proposed, some based on randomized exploration, mostly in the form of random walks. In this paper, we enhance partial, randomized state-space exploration methods with the concept of resource-awareness: the exploration algorithm is made aware of the limits on resources, in particular memory and time. We present a memory-aware algorithm that by design never stores more states than those that fit in main memory. We also propose criteria to compare this algorithm with similar other algorithms. We study properties of such algorithms both theoretically on simple classes of state spaces and experimentally on some preliminary case studies.