Using distinguishing and UIO sequences together in a checking sequence

  • Authors:
  • M. Cihan Yalcin;Husnu Yenigun

  • Affiliations:
  • Faculty of Engineering and Natural Sciences, Sabanci University, Tuzla, Istanbul, Turkey;Faculty of Engineering and Natural Sciences, Sabanci University, Tuzla, Istanbul, Turkey

  • Venue:
  • TestCom'06 Proceedings of the 18th IFIP TC6/WG6.1 international conference on Testing of Communicating Systems
  • Year:
  • 2006

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Abstract

If a finite state machine M does not have a distinguishing sequence, but has UIO sequences for its states, there are methods to produce a checking sequence for M. However, if M has a distinguishing sequence $\bar{D}$ , then there are methods that make use of $\bar{D}$ to construct checking sequences that are much shorter than the ones that would be constructed by using only the UIO sequences for M. The methods to applied when a distinguishing sequence exists, only make use of the distinguishing sequences. In this paper we show that, even if M has a distinguishing sequence $\bar{D}$, the UIO sequences can still be used together with $\bar{D}$ to construct shorter checking sequences.