Abstract
This paper presents a new concept of validation of distributed or safety-critical systems. The main problem of existing methods is related to the exponential growth of the analysis complexity with the model size. Our method relies on a state transition model which includes a description of operation duration and frequency of events (stochastic Petri nets). The aim of our work is to develop a new approach based on a partial exploration of the reachability set. At the end of the partial exploration we can demonstrate, for a given period of operation, that assertions about the behaviour of the system are verified with an acceptable probability level.
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