Name
Abstract | ||
|---|---|---|
In partially observed Petri nets, diagnosis is the task of detecting whether or not the given sequence of observed labels indicates that some unobservable fault has occurred. Diagnosability is an associated property of the Petri net, stating that in any possible execution an occurrence of a fault can eventually be diagnosed. In this paper we consider diagnosability under the weak fairness (WF) assumption, which intuitively states that no transition from a given set can stay enabled forever -- it must eventually either fire or be disabled. We show that a previous approach to WF-diagnosability in the literature has a major flaw, and present a corrected notion. Moreover, we present an efficient method for verifying WF-diagnosability based on a reduction to LTL-X model checking. An important advantage of this method is that the LTL-X formula is fixed -- in particular, the WF assumption does not have to be expressed as a part of it (which would make the formula length proportional to the size of the specification), but rather the ability of existing model checkers to handle weak fairness directly is exploited. |
Year | DOI | Venue |
|---|---|---|
2014 | 10.1145/2832910 | ACM Transactions on Embedded Computing Systems (TECS) |
Keywords | Field | DocType |
diagnosability, weak fairness, model checking, ltl-x, formal verification, petri nets,petri nets,model checking,formal verification,sensors,automata | Model checking,Petri net,Computer science,Automaton,Stochastic Petri net,Real-time computing,Theoretical computer science,Unobservable,Formal verification | Conference |
Volume | Issue | ISSN |
14 | 4 | 1539-9087 |
Citations | PageRank | References |
2 | 0.42 | 14 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Vasileios Germanos | 1 | 6 | 2.61 |
| Stefan Haar | 2 | 85 | 14.63 |
| Victor Khomenko | 3 | 13 | 2.27 |
| Stefan Schwoon | 4 | 2 | 2.11 |