Abstract. This article presents the results of the Model Checking Contest held within the SUMo 2011 workshop, a satellite event of Petri Nets 2011. This contest aimed at a fair and experimental evaluation of the performances of model checking techniques applied to Petri nets. The participating tools were compared on several examinations (state space generation, deadlock detection and evaluation of reachability formulae) run on a set of common models (Place/Transition and Symmetric Petri nets). The collected data gave some hints about the way techniques can scale up depending on both examinations and the characteristics of the models. This paper also presents the lessons learned from the organizer's point of view. It discusses the enhancements required for future editions of the Model Checking Contest event at the Petri Nets conference.

No abstract

International audienceAs some structural properties, like generative families of positive P-invariants, can only be computed in P/T nets, unfolding of Colored Petri Nets is of interest. However, it may generate huge nets that cannot be stored concretely in memory. In some cases, removing the dead parts of the unfolded net can dramatically reduce its size, but this operation requires the unfolded net to be represented anyway. This paper presents a symbolic representation of unfolded nets using Data Decision Diagrams. This technique allows to store very large models and manipulate them for optimization purpose

Although model checking is heavily used in the hardware domain, it did not take off in software engineering yet. One of the possible reasons is that software models are very complex. They integrate many dimensions such as data types and concurrency, leading to the infamous state space explosion problem. This article introduces the Algebraic Petri Nets Analyzer (AlPiNA), a symbolic model checker for High-level Petri nets. It is comprised of two independent modules: a GUI plug-in for Eclipse and an underlying model checking engine. AlPiNA's goal is to perform efficient and user-friendly model checking of large software systems. This is achieved by separating the model and its properties from the optimisation artifacts. This article describes the features that AlPiNA provides to the user for designing models and validating properties. It also presents the techniques and artifacts used for tuning validation performance, along with some theoretical background.

Abstract-CosyVerif aims at gathering within a common framework various existing tools for specification and verification. It has been designed in order to 1) support different formalisms with the ability to easily create new ones, 2) provide a graphical user interface for every formalism, 3) include verification tools called via the graphical interface or via an API as a Web service, and 4) offer the possibility for a developer to integrate his/her own tool without much effort, also allowing it to interact with the other tools. Several tools have already been integrated for the formal verification of (extensions of) Petri nets and timed automata.