Automatic Symbolic Verification of Embedded Systems

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We present a model-checking procedure and its implementation for the automatic verification of embedded systems. The system components are described as Hybrid Automata---communicating machines with finite control and real-valued variables that represent continuous environment parameters such as time, pressure, and temperature. The system requirements are specified in a temporal logic with stop watches, and verified by symbolic fixpoint computation. The verification procedure---implemented in the Cornell Hybrid Technology Tool, HyTech---applies to hybrid automata whose continuous dynamics is governed by linear constraints on the variables and their derivatives. We illustrate the method and the tool by checking safety, liveness, time-bounded, and duration requirements of digital controllers, schedulers, and distributed algorithms.

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1995-05
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Cornell University
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computer science; technical report
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http://techreports.library.cornell.edu:8081/Dienst/UI/1.0/Display/cul.cs/TR95-1513
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technical report
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