Strong safe realizability of message sequence chart specifications

  • Authors:
  • Abdolmajid Mousavi;Behrouz Far;Armin Eberlein;Behrouz Heidari

  • Affiliations:
  • Department of Electrical and Computer Engineering, University of Calgary, Calgary, AB, Canada;Department of Electrical and Computer Engineering, University of Calgary, Calgary, AB, Canada;Computer Engineering Department, American University of Sharjah, Sharjah, UEA;Department of Electrical and Computer Engineering, Islamic Azad University of Arak, Arak, Iran

  • Venue:
  • FSEN'07 Proceedings of the 2007 international conference on Fundamentals of software engineering
  • Year:
  • 2007

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Abstract

We study the notion of safe realizability and implied scenarios for Message Sequence Chart (MSC) specifications with the following contributions: (1) We investigate the cause of implied scenarios and show that even though implied scenarios are an artifact of the distributed and global system behaviour, nevertheless, they are the result of the nondeterminism in the local behaviour of processes, (2) Instead of deadlock states and safe realizability for MSC specifications, we introduce the notions of stuck states and strong safe realizability. Moreover, we use emergent scenarios to name both implied scenarios and those anomalies of MSC specifications that are captured by the notion of strong safe realizability, (3) We give an algorithm that reduces strong safe realizability (or safe realizability) of MSC specifications to strong safe realizability (or safe realizability) of a set of MSCs.