Methodologies for specification of real-time systems using timed I/O automata

  • Authors:
  • Alexandre David;Kim G. Larsen;Axel Legay;Ulrik Nyman;Andrzej Wasowski

  • Affiliations:
  • Computer Science, Aalborg University, Denmark;Computer Science, Aalborg University, Denmark;INRIA, IRISA, Rennes Cedex, France;Computer Science, Aalborg University, Denmark;IT University of Copenhagen, Denmark

  • Venue:
  • FMCO'09 Proceedings of the 8th international conference on Formal methods for components and objects
  • Year:
  • 2009

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Abstract

We present a real-time specification framework based on Timed I/O Automata and a comprehensive tool support for it. The framework supports various design methodologies including: top-down refinement--for decomposition of abstract specifications towards increasingly detailed models; bottom-up abstraction--for synthesis of complex systems from more concrete models; and step-wise modularisation of requirements--to factor out behaviours given by existing available components from a complex global requirements specification to be implemented. These methodologies are realized by consecutive applications of operators from the following set: refinement, consistency checking, logical and structural composition and quotienting. Additionally, our tool allows combining the component-oriented design process with verification of temporal logic properties increasing the flexibility of the process.