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Analysing Sanity of Requirements for Avionics Systems

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BARNAT Jiří BAUCH Petr BENEŠ Nikola BRIM Luboš BERAN Jan KRATOCHVÍLA Tomáš

Rok publikování 2016
Druh Článek v odborném periodiku
Časopis / Zdroj Formal Aspects of Computing
Fakulta / Pracoviště MU

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Citace
Doi http://dx.doi.org/10.1007/s00165-015-0348-9
Obor Informatika
Klíčová slova Requirement engineering; Linear temporal logic; Sanity checking
Popis In the last decade it became a common practice to formalise software requirements to improve the clarity of users' expectations. In this work we build on the fact that functional requirements can be expressed in temporal logic and we propose new sanity checking techniques that automatically detect flaws and suggest improvements of given requirements. Specifically, we describe and experimentally evaluate approaches to consistency and redundancy checking that identify all inconsistencies and pinpoint their exact source (the smallest inconsistent set). We further report on the experience obtained from employing the consistency and redundancy checking in an industrial environment. To complete the sanity checking we also describe a semi-automatic completeness evaluation that can assess the coverage of user requirements and suggest missing properties the user might have wanted to formulate. The usefulness of our completeness evaluation is demonstrated in a case study of an aeroplane control system.
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