Distributed cooperation with action systems
ACM Transactions on Programming Languages and Systems (TOPLAS)
Using Z: specification, refinement, and proof
Using Z: specification, refinement, and proof
The B-book: assigning programs to meanings
The B-book: assigning programs to meanings
ZB '02 Proceedings of the 2nd International Conference of B and Z Users on Formal Specification and Development in Z and B
System development (Prentice-Hall International series in computer science)
System development (Prentice-Hall International series in computer science)
EMF: Eclipse Modeling Framework 2.0
EMF: Eclipse Modeling Framework 2.0
Decomposition Structures for Event-B
IFM '09 Proceedings of the 7th International Conference on Integrated Formal Methods
Compositional Control of IP Media
IEEE Transactions on Software Engineering
Language and Tool Support for Class and State Machine Refinement in UML-B
FM '09 Proceedings of the 2nd World Congress on Formal Methods
Modeling in Event-B: System and Software Engineering
Modeling in Event-B: System and Software Engineering
Rodin: an open toolset for modelling and reasoning in Event-B
International Journal on Software Tools for Technology Transfer (STTT) - Special Section on VSTTE 2008
A CSP approach to control in event-B
IFM'10 Proceedings of the 8th international conference on Integrated formal methods
Applying Event-B atomicity decomposition to a multi media protocol
FMCO'09 Proceedings of the 8th international conference on Formal methods for components and objects
Applying atomicity and model decomposition to a space craft system in event-B
NFM'11 Proceedings of the Third international conference on NASA Formal methods
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Event-B is a state-based formal method that supports a refinement process in which an abstract model is elaborated towards an implementation in a step-wise manner. One weakness of Event-B is that control flow between events is typically modelled implicitly via variables and event guards. While this fits well with Event-B refinement, it can make models involving sequencing of events more difficult to specify and understand than if control flow was explicitly specified. New events may be introduced in Event-B refinement and these are often used to decompose the atomicity of an abstract event into a series of steps. A second weakness of Event-B is that there is no explicit link between such new events that represent a step in the decomposition of atomicity and the abstract event to which they contribute. To address these weaknesses, atomicity decomposition diagrams support the explicit modelling of control flow and refinement relationships for new events. In previous work, the atomicity decomposition approach has been evaluated manually in the development of two large case studies, a multi media protocol and a spacecraft sub-system. The evaluation results helped us to develop a systematic definition of the atomicity decomposition approach, and to develop a tool supporting the approach. In this paper we outline this systematic definition of the approach, the tool that supports it and evaluate the contribution that the tool makes.