轻松的故障定位:Ecdar实时系统的一致性测试

CoRR Pub Date : 2018-09-07 DOI:10.4204/EPTCS.277.11
Tobias R. Gundersen, Florian Lorber, Ulrik Nyman, Christian Ovesen
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引用次数: 3

摘要

实时系统的模型检查多年来一直在发展。最近,使用定时I/O自动机的模型检查器Ecdar被用来执行组合验证。然而,为了将实时系统的模型检查完全集成到工业开发中,我们需要一种有效且可靠的方法来测试这样的系统是否符合其相应的模型。因此,我们提出了Ecdar的扩展,它将一致性测试集成到一个新的IDE中,该IDE现在具有建模、验证和测试的功能。新工具使用基于模型的突变测试,只需要模型和被测系统来定位故障并证明某些类型的故障不存在。它支持使用实时或模拟时间进行测试。它将测试用例生成和测试执行并行化,以提供显著的加速。我们还引入了新的突变算子,提高了检测和定位故障的能力。最后,我们对140个故障系统进行了案例研究,其中Ecdar检测到所有故障。
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Effortless Fault Localisation: Conformance Testing of Real-Time Systems in Ecdar
Model checking of real-time systems has evolved throughout the years. Recently, the model checker Ecdar, using timed I/O automata, was used to perform compositional verification. However, in order to fully integrate model checking of real-time systems into industrial development, we need a productive and reliable way to test if such a system conforms to its corresponding model. Hence, we present an extension of Ecdar that integrates conformance testing into a new IDE that now features modelling, verification, and testing. The new tool uses model-based mutation testing, requiring only the model and the system under test, to locate faults and to prove the absence of certain types of faults. It supports testing using either real-time or simulated time. It parallelises test-case generation and test execution to provide a significant speed-up. We also introduce new mutation operators that improve the ability to detect and locate faults. Finally, we conduct a case study with 140 faulty systems, where Ecdar detects all faults.
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