Checking verification compliance of technical safety requirements on the AUTOSAR platform using annotated semi-formal executable models

Abstract

Implementing AUTOSAR-based embedded systems that adhere to ISO 26262 is not trivial. High-level safety goals have to be refined to functional safety requirements and technical HW and SW safety requirements. SW safety requirements allocated to the application as well as the underlying AUTOSAR platform. Finding relevant safety requirements on the AUTOSAR basic software are a challenge. AUTOSAR specifications provide incomplete lists of requirements which might be relevant. In this paper we address this challenge by providing tool support to automatically extract relevant functional requirements for given safety scenarios. A conservative estimation gives that the safety-relevant part of the overall requirements can be as small as 30%, which reduce the necessary rigid testing effort. An electronic parking brake example is presented as a demonstration of concept. © 2014 Springer International Publishing.