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Bounded Model Checking of PTACTL Based on SMT

  

  1. (1. Hunan Testing Institute of Product and Commodity Supervision, Changsha 410007, China; 2. College of Mathematics and Computer Science, Hunan Normal University, Changsha 410081, China; 3. Key Laboratory of High Performance Computing and Stochastic Information Processing, Ministry of Education, Changsha 410081, China)
  • Received:2015-12-23 Online:2016-03-17 Published:2016-03-17

Abstract: Probabilistic timed automata are an extension of timed automata with discrete transition probabilities, and can be used to model timed randomized protocols or fault-tolerant systems. We present a bounded model checking method on SMT for verifying probabilistic timed automata against PTACTL properties. This method adds the transition times and transition probabilities into the ACTL properties and changes the encodings of models and properties in order to verify them, which is come from the SMT-based bounded model checking. We also give two examples to show that this method is effectiveness and efficiency.

Key words: bounded model checking, probabilistic timed systems, probabilistic timed automata, PTACTL, SMT

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