Constraint-Based Heuristic On-line Test Generation from Non-deterministic I/O EFSMs

We are investigating on-line model-based test generation from non-deterministic output-observable Input/Output Extended Finite State Machine (I/O EFSM) models of Systems Under Test (SUTs). We propose a novel constraint-based heuristic approach (Heuristic Reactive Planning Tester (xRPT)) for on-line conformance testing non-deterministic SUTs. An indicative feature of xRPT is the capability of making reasonable decisions for achieving the test goals in the on-line testing process by using the results of off-line bounded static reachability analysis based on the SUT model and test goal specification. We present xRPT in detail and make performance comparison with other existing search strategies and approaches on examples with varying complexity.Comment: In Proceedings MBT 2012, arXiv:1202.582

From Design Formulas to Parallel Implementations

In this paper we show how to construct a parallel implementation for a certain kind of design specifications [Rav95], whose formulas can define stability, framing, selection, and progress properties. The implementation is described as a parallel composition of timed automata with deadlines [SiY96], where one automaton can read clocks of the other automata in the parallel composition. The class of timed automata is closed under this parallel composition. The relationship between the design specifications of [Rav95] and timed automata is also investigated in [Lak96]. The constructions presented in [Lak96] result in one timed automaton, whereas our transformation will give a parallel implementation