Enriching the Software Development Process by Formal Methods

. We describe a software development process designed for an integration and usage of formal methods into practical software process models in a scalable way. Our process model is an extension of the Vmodel, and allows the specification of critical components and the verification of crucial development steps. For different development stages we suggest user-oriented description techniques, based on a common formal semantic. Furthermore we outline methods for the verification of critical development steps. We illustrate our process by developing a small example with some critical aspects. 1 Introduction The development of software systems is a difficult and error prone task. This is certainly true if systems get very large and complex. However, this may even be true in cases where small to medium size programs have to be developed that are based on complex algorithms, data structures, or patterns of interaction. Today software development in practice is almost always done in ..