Synthesis-Aided Reliability Assurance of Basic Block Models for Model Checking Purposes

Igor Buzhinsky, Antti Pakonen, Valeriy Vyatkin

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    2 Citations (Scopus)
    7 Downloads (Pure)

    Abstract

    In the Finnish nuclear industry, model checking, a formal verification technique, is used as an additional means of safety assurance for instrumentation and control (I&C) system design. Since the code of vendor-specific basic function blocks used in I&C is commonly closed, these blocks need to be modeled manually based on available specification. This modeling introduces an additional source of human factor into the verification process. To increase the reliability of the library of basic blocks used in nuclear I&C verification, we apply formal synthesis techniques, which can construct finite-state models of reactive systems from behavior examples and temporal properties. Since these techniques have computational limitations and synthesized models are hard to understand even by an analyst, we do not use them in the final verification process. Instead, in an iterative process, behavioral differences between a synthesized model and a manual model implementation are identified and used to create a list of features of manual implementations which either violate the specification or show that the specification is ambiguous.
    Original languageEnglish
    Title of host publicationProceedings - 2018 IEEE 27th International Symposium on Industrial Electronics, ISIE 2018
    PublisherIEEE Institute of Electrical and Electronic Engineers
    Pages669-674
    Number of pages6
    ISBN (Electronic)978-1-5386-3705-0, 978-1-5386-3704-3
    ISBN (Print)978-1-5386-3706-7
    DOIs
    Publication statusPublished - 2018
    MoE publication typeNot Eligible
    Event27th IEEE International Symposium on Industrial Electronics, ISIE 2018 - Cairns, Australia
    Duration: 13 Jun 201815 Jun 2018

    Conference

    Conference27th IEEE International Symposium on Industrial Electronics, ISIE 2018
    Abbreviated titleISIE 2018
    Country/TerritoryAustralia
    CityCairns
    Period13/06/1815/06/18

    Keywords

    • model checking
    • formal verification
    • formal synthesis
    • nuclear I&C systems

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