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Early validation of system requirements and design through correctness-by-construction

Abstract : Early validation of requirements aims to reduce the need for the high-cost validation testing and corrective measures at late development stages. This work introduces a systematic process for the unambiguous specification of system requirements and the guided derivation of formal properties, which should be implied by the system 's structure and behavior in conjunction with its external stimuli. This rigorous design takes place through the incremental construction of a model using the BIP (Behavior-Interaction-Priorities) component framework. It allows building complex designs by composing simpler reusable designs enforcing given properties. If some properties are neither enforced nor verified, the model is refined or certain requirements are revised. A validated model provides evidence of requirements' consistency and design correctness. The process is semi-automated through a new tool and existing verification tools. Its effectiveness was evaluated on a set of requirements for the control software of the CubETH nanosatellite and an extract of software requirements for a Low Earth Orbit observation satellite. Our experience and obtained results helped in identifying open challenges for applying the method in industrial context. These challenges concern with the domain knowledge representation , the expressiveness of used specification languages, the library of reusable designs and scalability.
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https://hal.archives-ouvertes.fr/hal-01873999
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Submitted on : Friday, October 5, 2018 - 3:21:45 PM
Last modification on : Friday, July 3, 2020 - 4:43:06 PM
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Emmanouela Stachtiari, Anastasia Mavridou, Panagiotis Katsaros, Simon Bliudze, Joseph Sifakis. Early validation of system requirements and design through correctness-by-construction. Journal of Systems and Software, Elsevier, 2018, 145, pp.52-78. ⟨10.1016/j.jss.2018.07.053⟩. ⟨hal-01873999⟩

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