Online Testing of Real-Time Systems Using UPPAAL: Status and Future Work

Authors Kim G. Larsen, Marius Mikucionis, Brian Nielsen

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Kim G. Larsen
Marius Mikucionis
Brian Nielsen

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Kim G. Larsen, Marius Mikucionis, and Brian Nielsen. Online Testing of Real-Time Systems Using UPPAAL: Status and Future Work. In Perspectives of Model-Based Testing. Dagstuhl Seminar Proceedings, Volume 4371, pp. 1-21, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2005)


We present TUPPAAL --- a new tool for online black-box testing of real-time embedded systems from non-deterministic timed automata specifications. We describe a sound and complete randomized online testing algorithm, and describe how to implement it using symbolic state representation and manipulation techniques. We propose the notion of relativized timed input/output conformance as the formal implementation relation. A novelty of this relation and our testing algorithm is that they explicitly take environment assumptions into account, generate, execute and verify the result online using the UPPAAL on-the-fly model-checking tool engine. A medium size case study shows promising results in terms of error detection capability and computation performance.
  • Online testing
  • black-box testing
  • real-time systems
  • embedded systems
  • symbolic state representation
  • relativized timed input/output conformance
  • mo


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