Application of Decomposition and Generic Instantiation

Abstract

It is believed that reusability in formal development should reduce the time and cost of formal modelling within a production environment. Event-B is a formal method that allows modelling and refinement of systems. Generic instantiation and decomposition are techniques that simplify formal developments by reusing existing models and avoiding re-proofs. We apply these techniques in Event-B for the development of a metro system case study based on safety properties. This work aims to be give some guidelines of a practical way to develop large systems by instantiation of generic models and (shared event) decompose components into smaller sub-components