NDLI: Detecting common mode failures in N-version software using weakest precondition analysis

Content Provider	IEEE Xplore Digital Library
Author	Gwang Sik Yoon Sung Deok Cha Yong Rae Kwon Chan Hyoung Yoo
Copyright Year	1997
Description	Author affiliation: Dept. of Comput. Sci., Korea Adv. Inst. of Sci. & Technol., Taejon, South Korea (Gwang Sik Yoon)
Abstract	An underlying assumption for N-version programming technique is that independently developed versions would fail in a statistically independent manner However empirical studies have demonstrated that common mode failures can occur even for independently developed versions, and that common mode failures degrade system reliability. In this paper, we demonstrate that the weakest precondition analysis is effective in determining input spaces leading to common mode failures. We applied the weakest precondition to the Launch Interceptor Programs which were used in several other experiments related to the N-version programming technique. We detected 13 out of 18 fault pairs which have been known to cause common mode failure. These faults were due to logical flaws in program design. Although the weakest precondition analysis may be labor-intensive since they are applied manually our results convincingly demonstrate that it is effective for identifying input spaces causing common mode failures and further improving the reliability of N-version software.
Starting Page	272
Ending Page	280
File Size	729425
Page Count	9
File Format	PDF
ISBN	081868271X
DOI	10.1109/APSEC.1997.640184
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-12-05
Publisher Place	Hong Kong
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Failure analysis Fault detection Software safety Computer science Asynchronous transfer mode Degradation Reliability Fault tolerant systems Communication industry Computer industry
Content Type	Text
Resource Type	Article

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