Formal Verification and Validation of AADL Models

Safety-critical systems are increasingly difficult to comprehend due to their rising complexity. Methodologies, tools and modeling formalisms have been developed to overcome this. Component-based design is an important paradigm that is shared by many of them. It helps to master the overall complexity while in addition allowing for reusability. Furthermore, it easily supports the common issues in the engineering disciplines, like hardware/software (i.e., co-engineering), performability, dependability, reliability, availability, maintainability and safety engineering (RAMS). Model artifacts that are typical for a discipline can be encapsulated in the affected components, while staying imperceptible for non-affected components. This leads to different views of the system under development, which subsequently entails the natural distinction in different system abstractions, formalisms and tools. Nonetheless, there is only one system under development. With the current methodologies, there is no single view of this system that links all aspects relevant to all involved engineering disciplines in a coherent manner.