Petri net reactive modules

Abstract: In this paper we model (discrete) reactive systems that may interact with each other by Petri net reactive modules (modules, for short) which are classical Petri nets together with a distinguished subset of interface places. We consider then an asynchronous composition operation of modules and, closely related to it, a decomposition operation. We show that any process (concurrent execution) of a composition of two modules can be decomposed into processes of “shifted” components for which a p-composition function exists, and vice versa. Based on this result, a compositional semantics of modules is then defined. Applications of process decomposition to replacement techniques of Petri nets and in proving correctness of Petri net structural transformations, are further discussed. [Copyright &y& Elsevier]