Model-checking infinite-state nuclear safety I&C systems with nuXmv

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Abstract

For over a decade, model checking has been successfully used to formally verify the instrumentation and control (I&C) logic design in Finnish nuclear power plant projects. One of the practical challenges is that the model checker NuSMV forces the user to abstract the way analog signals are processed in the model, which causes extra manual work, and could mask actual design issues. In this paper, we experiment with the newer tool nuXmv, which supports infinite-state modelling. Using actual models from practical industrial projects, we show that after changing the analog signal processing to be based on real number math, the analysis times are still manageable. The disadvantage is that certain useful types of formal properties are not supported by the infinite-state algorithms. We also discuss the nuclear industry specific features of I&C programming languages, which cause significant constraints on domain-specific formal verification method and tool development.
Original languageEnglish
Title of host publication2021 IEEE 19th International Conference on Industrial Informatics (INDIN)
PublisherIEEE Institute of Electrical and Electronic Engineers
Number of pages6
ISBN (Electronic)978-1-7281-4395-8
ISBN (Print)978-1-7281-4396-5
DOIs
Publication statusPublished - 23 Jul 2021
MoE publication typeA4 Article in a conference publication
Event2021 IEEE 19th International Conference on Industrial Informatics (INDIN) - Palma de Mallorca, Spain
Duration: 21 Jul 202123 Jul 2021

Conference

Conference2021 IEEE 19th International Conference on Industrial Informatics (INDIN)
Period21/07/2123/07/21

Keywords

  • Industries
  • Computer languages
  • Heuristic algorithms
  • Signal processing algorithms
  • Manuals
  • Tools
  • Signal processing

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