Randomization Helps in LTL Model Checking

• Autoři: BRIM Luboš; ČERNÁ Ivana; NEČESAL Martin
• Rok publikování: 2001
• Druh: Článek ve sborníku
• Konference: Process Algebra and Probabilistic Methods. Proceedings of PAPM-PROBMIV 2001
• Fakulta / Pracoviště MU: Fakulta informatiky
• Obor: Teorie informace
• Klíčová slova: Model checking; randomized algorithm; depth-first search
• Popis: We present and analyze a new probabilistic method for automata based LTL model checking of non-proba\-bi\-listic systems with intention to reduce memory requirements. The main idea of our approach is to use randomness to decide which of the needed information (visited states) should be stored during a computation and which could be omitted. We propose two strategies of probabilistic storing of states. The algorithm never errs, i.e. it always delivers correct results. On the other hand the computation time can increase. The method has been embedded into the SPIN model checker and a series of experiments has been performed. The results confirm that randomization can help to increase the applicability of model checkers in practice.

Související projekty

• Nekonečně stavové souběžné systémy - modely a verifikace
• Algoritmy a nástroje pro praktickou verifikaci souběžných systémů
• Nesekvenční modely výpočtů -- kvantové a souběžné distribuované modely výpočetních procesů