Statecharts: A visual formalism for complex systems
Science of Computer Programming
Completeness and Consistency in Hierarchical State-Based Requirements
IEEE Transactions on Software Engineering - Special issue: best papers of the 17th International Conference on Software Engineering (ICSE-17)
Formal Requirements Analysis of an Avionics Control System
IEEE Transactions on Software Engineering - Special issue on formal methods in software practice
Synchronous Programming of Reactive Systems
Synchronous Programming of Reactive Systems
Model Checking Large Software Specifications
IEEE Transactions on Software Engineering
Mode-Automata: About Modes and States for Reactive Systems
ESOP '98 Proceedings of the 7th European Symposium on Programming: Programming Languages and Systems
ProCoS Proceedings of the Third International Symposium Organized Jointly with the Working Group Provably Correct Systems on Formal Techniques in Real-Time and Fault-Tolerant Systems
Time-Deterministic Hybrid Transition Systems
Hybrid Systems V
Combining Theorem Proving and Continuous Models in Synchronous Design
FM '99 Proceedings of the Wold Congress on Formal Methods in the Development of Computing Systems-Volume II
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The synchronous family of languages (Lustre, Esterel, Signal, Statecharts) provide a great deal of support for verifying a control program at the design and compilation stage. However, a common aspect of embedded systems is that significant properties of the system can not be verified by formally analysing the controller (software) on its own. To analyse the system one requires to state and document assumptions on the environment. Furthermore, proving timeliness properties necessitates justifying a sampling interval and relating the synchronous step to metric time. Support for these activities is generally missing from current formal methods tools. In this paper we exploit simulation models - based on physical modelling of the environment - together with theorem proving, to prove properties of a closed loop system.We report on the work in progress on a case study provided by Saab Aerospace where deductive tools such as NP-Tools and simulation environments such as MATRIXx-SystemBuild are jointly used for verifying designs in Statecharts or programs in Lustre. The case study treats temperature and flow control in a climatic chamber.