Automatic Verification of Parameterized Synchronous Systems (Extended Abstract)

Systems with an arbitrary number of homogeneous processes occur in many applications. The Parameterized Model Checking Problem (PMCP) is to determine whether a temporal property is true of every size instance of the system. We consider systems formed by a synchronous parallel composition of a single control process with an arbitrary number of homogeneous user processes, and show that the PMCP is decidable for properties expressed in an indexed propositional temporal logic. While the problem is in general PSPACE-complete, our initial experimental results indicate that the method is usable in practice.