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The software becomes increasingly a core integrated part of the safety-critical systems. Unfortunately, little contemporary data exists to document the actual practices used by software professionals for software testing and quality assurance activities for software in safety-critical systems. To remedy the deficiency of lack of data, we conducted a comprehensive survey of software professionals to attempt to discover these practices. In this paper we report on our findings from this survey on the state of practice of testing software for safety-critical systems in respect to three areas: 1) The integration of the testing activities within the software development life cycle; 2) Testing methods and techniques; 3) Testing metrics and defects management. We also provide some comparison with testing software for non-safety-critical systems.

Testing Practices of Software in Safety Critical Systems: Industrial Survey