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High integrity applications, such as those performing safety or security critical functions, are usually built to conform to standards such RTCA DO-178B or UK Def Stan 00-55. Typically such standards define ascending levels of criticality each of which requires a different and increasingly onerous level of verification. It is very common to find that real systems contain code of several different...
For complex systems identifying and mitigating a gap between suppliers provided software and customer certification needs is difficult. Getting it wrong can cause program delays or even project failure. A mitigation strategy is to carry out additional assurance analysis such as static code analysis (SCA). This can add significantly to the procurement expense and may require repeating with new software...
High integrity software systems require the rigorous validation of safety properties. Assessing whether software architectures are able to meet these properties is of great interest: to avoid the risk that the implementation does not fulfil safety requirements due to a bad design, and to reduce the development cost of safety critical parts of the system. A preliminary safety assessment is a process...
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