Computer Communications - Special issue on practical use of FDTs in communications & distributed systems
Theoretical Computer Science
UPPAAL—a tool suite for automatic verification of real-time systems
Proceedings of the DIMACS/SYCON workshop on Hybrid systems III : verification and control: verification and control
Efficient and User-Friendly Verification
IEEE Transactions on Computers
Modeling Urgency in Timed Systems
COMPOS'97 Revised Lectures from the International Symposium on Compositionality: The Significant Difference
Timing Assumptions and Verification of Finite-State Concurrent Systems
Proceedings of the International Workshop on Automatic Verification Methods for Finite State Systems
IF: An Intermediate Representation and Validation Environment for Timed Asynchronous Systems
FM '99 Proceedings of the Wold Congress on Formal Methods in the Development of Computing Systems-Volume I - Volume I
Design and Synthesis of Synchronization Skeletons Using Branching-Time Temporal Logic
Logic of Programs, Workshop
Timed I/O Automata: A Mathematical Framework for Modeling and Analyzing Real-Time Systems
RTSS '03 Proceedings of the 24th IEEE International Real-Time Systems Symposium
Timed automata with urgent transitions
Acta Informatica
Specifying Urgency in Timed I/O Automata
SEFM '05 Proceedings of the Third IEEE International Conference on Software Engineering and Formal Methods
Model checking prioritized timed automata
ATVA'05 Proceedings of the Third international conference on Automated Technology for Verification and Analysis
Modeling and automatic failure analysis of safety-critical systems using extended safecharts
SAFECOMP'07 Proceedings of the 26th international conference on Computer Safety, Reliability, and Security
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Computation tree logic (CTL) model checkers either allow modeling of only lazy semantics in the timed system model or consider at most a simple as soon as possible semantics. However, the design of real-time systems requires different types of urgencies, which have been modeled by several urgency variants of the timed automata model. Except for the IF toolset that model checks timed automata with urgency against observers, the urgency variants of timed automata have not yet been used for verifying the satisfaction of CTL properties in real-time systems. This work is targeted at proposing a zone-based urgency semantics that is time-reactive and at model checking timed automata models that have been extended with such urgency semantics for delayable and eager transition types. Interactions among these different types of transition urgencies are also investigated. The proposed verification methods were implemented in the SGM CTL model checker and applied to real-time and embedded systems. Several experiments, comparing the state space sizes produced by SGM with that by the IF toolset, show that SGM produces much smaller state-spaces.