Quantitative Corner Case Feature Analysis of Hybrid Automata with ForFET^SMT
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The analysis and verification of hybrid automata (HA) models against rich formal properties can be a challenging task. Existing methods and tools can mainly reason whether a given property is satisfied or violated. However, such qualitative answers might not provide sufficient information about the model behaviors. This paper presents the ForFET^SMT tool which can be used to reason quantitatively about such properties. It employs feature automata and can evaluate quantitative property corners of HA. ForFET^SMT uses two third-party formal verification tools as its backbone: the SpaceEx reachability tool and the SMT solver dReach/dReal. Herein, we describe the design and implementation of ForFET^SMT and present its functionalities and modules. To improve the usability of the tool for non-expert users, we also provide a list of quantitative property templates.
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