Statecharts: A visual formalism for complex systems
Science of Computer Programming
Using Z: specification, refinement, and proof
Using Z: specification, refinement, and proof
Guarded commands, nondeterminacy and formal derivation of programs
Communications of the ACM
From simulink to SCADE/lustre to TTA: a layered approach for distributed embedded applications
Proceedings of the 2003 ACM SIGPLAN conference on Language, compiler, and tool for embedded systems
ICFEM '00 Proceedings of the 3rd IEEE International Conference on Formal Engineering Methods
Defining and translating a "safe" subset of simulink/stateflow into lustre
Proceedings of the 4th ACM international conference on Embedded software
A denotational semantics for stateflow
Proceedings of the 5th ACM international conference on Embedded software
Verification of Control Systems using Circus
ICECCS '06 Proceedings of the 11th IEEE International Conference on Engineering of Complex Computer Systems
Type Checking Circus Specifications
Electronic Notes in Theoretical Computer Science (ENTCS)
ArcAngelC: a Refinement Tactic Language for Circus
Electronic Notes in Theoretical Computer Science (ENTCS)
Symbolic analysis for improving simulation coverage of Simulink/Stateflow models
EMSOFT '08 Proceedings of the 8th ACM international conference on Embedded software
Modular code generation from synchronous block diagrams: modularity vs. code size
Proceedings of the 36th annual ACM SIGPLAN-SIGACT symposium on Principles of programming languages
Generating and Analyzing Symbolic Traces of Simulink/Stateflow Models
CAV '09 Proceedings of the 21st International Conference on Computer Aided Verification
From control law diagrams to Ada via Circus
Formal Aspects of Computing
ClawZ: cost-effective formal verification for control systems
ICFEM'05 Proceedings of the 7th international conference on Formal Methods and Software Engineering
Unifying theories in proofpower-z
UTP'06 Proceedings of the First international conference on Unifying Theories of Programming
Control law diagrams in circus
FM'05 Proceedings of the 2005 international conference on Formal Methods
ZB'05 Proceedings of the 4th international conference on Formal Specification and Development in Z and B
Proving properties of stateflow models using ISO standard z and CADiZ
ZB'05 Proceedings of the 4th international conference on Formal Specification and Development in Z and B
Automatic translation from Circus to Java
FM'06 Proceedings of the 14th international conference on Formal Methods
Safety-critical Java programs from Circus models
Real-Time Systems
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Simulink block diagrams are widely used in industry for specifying control systems, and of particular interest and complexity are Stateflow blocks, which are themselves defined by separate charts. To make formal reasoning about diagrams and charts possible, we need to formalise their semantics; for the formal verification of their implementations, a refinement-based semantics is appropriate. An extensive subset of Simulink has been formalised in a language for refinement, namely, Circus, and here, we propose an approach to cover Stateflow charts. Our models are distinctive in their operational nature, which closely reflects the informal description of the Stateflow (simulation) semantics. We describe, formalise, and automate a strategy to generate our Circus models. The result is a solid foundation for reasoning based on refinement.