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Formal and Probabilistic Arguments for Reuse and Reverification of Components in Safety-Critical Real-Time Systems

Authors:

Henrik Thane, Anders Wall

Publication Type:

Report - MRTC

ISRN:

MDH-MRTC-56/2000-1-SE

Abstract

In this paper we discuss how testing of real-time software relate to component reuse in safety-critical real-time systems. We will introduce a novel framework for formal and probabilistic arguments of component reuse in safety-critical real-time systems. Using both quantitative and qualitative descriptions of component attributes and assumptions about the environment, we can relate input-output domains, temporal characteristics, fault hypotheses, reliability levels, and task models. Using these quantitative and qualitative attributes we can deem if a component can be reused or not. We can also deem how much and which subsets, of say input-output domains, that need additional functional testing. This framework will give formal and probabilistic arguments for reuse of components in safety-critical real-time systems.

Bibtex

@techreport{Thane204,
author = {Henrik Thane and Anders Wall},
title = {Formal and Probabilistic Arguments for Reuse and Reverification of Components in Safety-Critical Real-Time Systems},
number = {ISSN 1404-3041 ISRN MDH-MRTC-56/2000-1-SE},
month = {January},
year = {2000},
url = {http://www.es.mdu.se/publications/204-}
}