Reactive semantics for component based Petri nets

In this paper we investigate new dynamic semantics of component based Petri nets that we propose for describing behavior models of event-driven concurrent systems made up of active components. Each of our Petri net modules is related to one component of the system under design and all these modules are linked to each other so that this allows them to asynchronously communicate using an event flow throughout their interface places and transitions. We also give a modular method for building the state space of this kind of Petri nets by combining those of its modules. We first give a new algorithm for state exploration of the modules in accordance to statecharts run-to completion policy that controls the way active components are executed and thereafter we combine the produced reachability graphs using a parallel operator to yield the whole state space of the system.