On Combining State Space Reductions with Global Fairness Assumptions
Model checking has established itself as an effective system analysis method, as it is capable of proving/dis-proving properties automatically. Its application to practical systems is however limited by state space explosion. Among effective state reduction techniques are symmetry reduction and partial order reduction. Global fairness often plays a vital role in designing self-stabilizing population protocols. It is known that combining fairness and symmetry reduction is nontrivial. In this work, we first show that global fairness, unlike weak/strong fairness, can be combined with symmetry reduction. We extend the PAT model checker with the technique and demonstrate its usability by verifying recently proposed population protocols. Second, we show that partial order reduction is not property-preserving with global fairness.
Unable to display preview. Download preview PDF.
- 9.Clarke, E.M., Grumberg, O., Peled, D.A.: Model Checking. The MIT Press, Cambridge (2000)Google Scholar
- 16.Jiang, H.: Distributed Systems of Simple Interacting Agents. PhD thesis, Yale Uni (2007)Google Scholar
- 19.Liu, Y., Pang, J., Sun, J., Zhao, J.H.: Verification of Population Ring Protocols in PAT. In: TASE, pp. 81–89. IEEE, Los Alamitos (2009)Google Scholar
- 23.Pnueli, A.: On the Extremely Fair Treatment of Probabilistic Algorithms. In: STOC, pp. 278–290. ACM, New York (1983)Google Scholar