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• W847031358 abstract "State-of-the-art System-on-Chip (SoC) architectures integrate many different components, such as processors, accelerators, memories, and I/O blocks. Some of those components, but not all, may have caches. Because the effort of validation with simulation-based techniques, currently used in industry, grows exponentially with the complexity of the SoC, this thesis investigates the use of formal verification techniques in this context. More precisely, we use the CADP toolbox to develop and validate a generic formal model of a heterogeneous cache-coherent SoC compliant with the recent AMBA 4 ACE specification proposed by ARM. We use a constraint-oriented specification style to model the general requirements of the specification. We verify system properties on both the constrained and unconstrained model to detect the cache coherency corner cases. We take advantage of the parametrization of the proposed model to produce a comprehensive set of counterexamples of non-satisfied properties in the unconstrained model. The results of formal verification are then used to improve the industrial simulation-based verification techniques in two aspects. On the one hand, we suggest using the formal model to assess the sanity of an interface verification unit. On the other hand, in order to generate clever semi-directed test cases from temporal logic properties, we propose a two-step approach. One step consists in generating system-level abstract test cases using model-based testing tools of the CADP toolbox. The other step consists in refining those tests into interface-level concrete test cases that can be executed at RTL level with a commercial Coverage-Directed Test Generation tool. We found that our approach helps in the transition between interface-level and system-level verification, facilitates the validation of system-level properties, and enables early detection of bugs in both the SoC and the commercial test-bench." @default.
• W847031358 created "2016-06-24" @default.
• W847031358 creator A5088280440 @default.
• W847031358 date "2015-09-17" @default.
• W847031358 modified "2023-09-27" @default.
• W847031358 title "Méthodes Formelles pour la vérification fonctionnelle des systèmes sur puce cache cohérent" @default.
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• W847031358 hasPublicationYear "2015" @default.
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