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Constructing Product-Line Safety Cases from Contract-Based Specifications

Fulltext:


Authors:

Damir Nesic , Mattias Nyberg , Barbara Gallina

Publication Type:

Conference/Workshop Paper

Venue:

The 34th ACM/SIGAPP Symposium On Applied Computing

DOI:

10.1145/3297280.3297479


Abstract

Safety cases are used to argue that safety-critical systems satisfy the requirements that are determined to mitigate the potential hazards in the systems operating environment. Although typically a manual task, safety cases have been successfully created for systems without many configuration options. However, in highly configurable systems, typically developed as a Product Line (PL), arguing about each possible configuration, and ensuring the completeness of the safety case are still open research problems. This paper presents a novel and general approach, based on Contract-Based Specification (CBS), for the construction of a safety case for an arbitrary PL. Starting from a general CBS framework, we present a PL extensions that allows expressing configurable systems and preserves the properties of the original CBS framework. Then, we define the transformation from arbitrary PL models, created using extended CBS framework, to a safety case argumentation-structure, expressed using the Goal Structuring Notation. Finally, the approach is exemplified on a simplified, but real, and currently produced system by Scania CV AB.

Bibtex

@inproceedings{Nesic5299,
author = {Damir Nesic and Mattias Nyberg and Barbara Gallina},
title = {Constructing Product-Line Safety Cases from Contract-Based Specifications},
month = {April},
year = {2019},
booktitle = {The 34th ACM/SIGAPP Symposium On Applied Computing},
url = {http://www.es.mdh.se/publications/5299-}
}