Coverage-Directed Test Generation with Model Checkers: Challenges and Opportunities
COMPSAC '05 Proceedings of the 29th Annual International Computer Software and Applications Conference - Volume 01
The effect of program and model structure on mc/dc test adequacy coverage
Proceedings of the 30th international conference on Software engineering
Software model checking takes off
Communications of the ACM
Compositional verification of architectural models
NFM'12 Proceedings of the 4th international conference on NASA Formal Methods
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Systems are naturally constructed in hierarchies in which design choices made at higher levels of abstraction ``flow down'' to requirements on system components at lower levels of abstraction. Thus, whether an aspect of the system is a design choice or a requirement depends largely on one's vantage point within the hierarchy of system components. Furthermore, systems are often constructed middle-out rather than top-down; compatibility with existing systems and architectures, or availability of specific components influences high-level requirements. We believe that requirements and architectural design should be more closely aligned: that requirements models must account for hierarchical system construction, and that architectural design notations must better support specification of requirements for system components. In this presentation, I describe tools supporting iterative development of architecture and verification based on software models. We represent the hierarchical composition of the system in the Architecture Analysis & Design Language (AADL), and use an extension to the AADL language to describe requirements at different levels of abstraction for compositional verification. To describe and verify component-level behavior, we use Simulink and Stateflow and multiple analysis tools.