Abstract
A safety case must resolve concerns of two different kinds: how complete and accurate is our knowledge about aspects of the system (e.g., its requirements, environment, implementation, hazards) and how accurate is our reasoning about the design of the system, given our knowledge.
The first of these is a form of epistemology and requires human experience and insight, but the second can, in principle, be reduced to logic and then checked and automated using the technology of formal methods.
We propose that reducing epistemic doubt is the main challenge in safety cases, and discuss ways in which this might be achieved.
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References
Requirements and Technical Concepts for Aviation (RTCA) Washington, DC: DO-178C: Software Considerations in Airborne Systems and Equipment Certification (2011)
Haddon-Cave, C.: The Nimrod Review: An independent review into the broader issues surrounding the loss of the RAF Nimrod MR2 Aircraft XV230 in Afghanistan in 2006. Report, The Stationery Office, London, UK (2009), http://www.official-documents.gov.uk/document/hc0809/hc10/1025/1025.pdf
Klein, G., Elphinstone, K., Heiser, G., Andronick, J., Cock, D., Derrin, P., Elkaduwe, D., Engelhardt, K., Kolanski, R., Norrish, M., et al.: seL4: Formal verification of an OS kernel. In: Proceedings of the ACM SIGOPS 22nd Symposium on Operating Systems Principles, pp. 207–220. ACM (2009)
Miner, P., Geser, A., Pike, L., Maddalon, J.: A unified fault-tolerance protocol. In: Lakhnech, Y., Yovine, S. (eds.) FORMATS/FTRTFT 2004. LNCS, vol. 3253, pp. 167–182. Springer, Heidelberg (2004)
Narkawicz, A., Muñoz, C.: Formal verification of conflict detection algorithms for arbitrary trajectories. Reliable Computing 17, 209–237 (2012)
Littlewood, B., Rushby, J.: Reasoning about the reliability of diverse two-channel systems in which one channel is “possibly perfect”. IEEE Transactions on Software Engineering 38, 1178–1194 (2012)
Society of Automotive Engineers: Aerospace Recommended Practice (ARP) 4761: Guidelines and Methods for Conducting the Safety Assessment Process on Civil Airborne Systems and Equipment (1996)
Society of Automotive Engineers: Aerospace Recommended Practice (ARP) 4754: Certification Considerations for Highly-Integrated or Complex Aircraft Systems (1996), Also issued as EUROCAE ED-79; revised as ARP 4754A (December 2010)
Requirements and Technical Concepts for Aviation (RTCA) Washington, DC: DO-178B: Software Considerations in Airborne Systems and Equipment Certification (1992), This document is known as EUROCAE ED-12B in Europe
Rushby, J.: The Ontological Argument in PVS. In: Shilov, N. (ed.) Fun With Formal Methods, St Petersburg, Russia (2013), Workshop in association with CAV 2013
Rushby, J.: Formalism in safety cases. In: Dale, C., Anderson, T. (eds.) Making Systems Safer: Proceedings of the Eighteenth Safety-Critical Systems Symposium, Bristol, UK, pp. 3–17. Springer (2010)
Cruanes, S., Hamon, G., Owre, S., Shankar, N.: Tool Integration with the Evidential Tool Bus. In: Giacobazzi, R., Berdine, J., Mastroeni, I. (eds.) VMCAI 2013. LNCS, vol. 7737, pp. 275–294. Springer, Heidelberg (2013)
Toulmin, S.E.: The Uses of Argument, Updated edition. Cambridge University Press (2003) (the original is dated 1958)
Bishop, P., Bloomfield, R., Guerra, S.: The future of goal-based assurance cases. In: DSN Workshop on Assurance Cases: Best Practices, Possible Obstacles, and Future Opportunities, Florence, Italy (2004)
Pritchett, A.R., Feigh, K.M., Kim, S.Y., Kannan, S.: Work Models that Compute to support the design of multi-agent socio-technical systems. IEEE Transactions on Systems, Man, and Cybernetics, Part A: Systems and Humans (under review)
Bolton, M.L., Bass, E.J.: Evaluating human-automation interaction using task analytic behavior models, strategic knowledge-based erroneous human behavior generation, and model checking. In: IEEE International Conference on Systems, Man, and Cybernetics, Anchorage, AK, pp. 1788–1794 (2011)
Miller, S.P., Whalen, M.W., Cofer, D.D.: Software model checking takes off. Communications of the ACM 53, 58–64 (2010)
Rushby, J.: A safety-case approach for certifying adaptive systems. In: AIAA Infotech@Aerospace Conference, Seattle, WA, American Institute of Aeronautics and Astronautics (2009) AIAA paper 2009-1992
Bass, E.J., Feigh, K.M., Gunter, E., Rushby, J.: Formal modeling and analysis for interactive hybrid systems. In: Fourth International Workshop on Formal Methods for Interactive Systems: FMIS 2011, Limerick, Ireland. Electronic Communications of the EASST, vol. 45 (2011)
Rushby, J.: New challenges in certification for aircraft software. In: Baruah, S., Fischmeister, S. (eds.) Proceedings of the Ninth ACM International Conference on Embedded Software: EMSOFT, Taipei, Taiwan, pp. 211–218. Association for Computing Machinery (2011)
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Rushby, J. (2013). Logic and Epistemology in Safety Cases. In: Bitsch, F., Guiochet, J., Kaâniche, M. (eds) Computer Safety, Reliability, and Security. SAFECOMP 2013. Lecture Notes in Computer Science, vol 8153. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-40793-2_1
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DOI: https://doi.org/10.1007/978-3-642-40793-2_1
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