Proof Directed Model Checking. In order to improve the performance and scalability of animation and model checking with ProB, we want to make use of the proof information available in an integrated platform such as Rodin. In particular, we can use the information about which POs have already been discharged to simplify the task of the model checker and to guide the order in which it evaluates states. Our first implementation has shown significant reduction of the model checking effort for industrial applications. It uses proof information obtained from Rodin to remove invariants that are proven to hold. Actually, if unproven(e) is the unproven part of the invariant for event e, and a state is reachable via events e and f, we only need to check the intersection of unproven(e) and unproven(f) (see Xxxx Xxxxxxxxxxx, Xxxxxxx Xxxxxxxx. Proof Assisted Model Checking for B. ICFEM 2009. [1]).
Proof Directed Model Checking. With the aid of the ProB plug-in, the Rodin Platform provides an integrated environment for editing, proving, animating and model checking Event-B models. This is of considerable benefit to the modeller, as it allows him to switch between the various tools to validate, debug and improve his or her models. The crucial idea of this paper is that the integrated platform also provides benefits to the tool developer, i.e. it allows easy access to information from other tools. Indeed, there has been considerable interest in combining model checking, proving and testing. In previous work we have already shown how a model checker can be used to complement the Event-B proving environment, by acting as a disprover. In this paper we show how the prover can help to improve the efficiency of the animator and model checker. Xxxx Xxxxxxxxxxx, Xxxxxxx Xxxxxxxx. Proof Assisted Model Checking for B. ICFEM 2009. [1]
