A Flexible, Extensible Simulation Environment for Testing Real-Time Specifications

ÐThis paper describes MTSim, an extensible, customizable simulation platform for the Modechart toolset (MT). MTSim provides support for aplugging ino user-defined viewers useful in simulating system behavior in different ways, including applicationspecific ways. MTSim also supports full user participation in the generation of simulations by allowing users to inject events into the execution trace. Moreover, MTSim provides monitoring and assertion checking of execution traces and the invocation of user-specified handlers upon assertion violation. This paper also introduces an MTSim component called WebSim, a suite of simulation tools for MT, and an application-specific component of MTSim which displays the cockpit of an F-18 aircraft and which responds to user inputs to model a bomb release function. Index TermsÐSimulation, specification, symbolic execution, monitoring and assertion checking, formal methods.