Luthmann, Lars ; Göttmann, Hendrik ; Lochau, Malte (2019)
Compositional Liveness-Preserving Conformance Testing of Timed I/O Automata - Technical Report.
doi: 10.48550/arXiv.1909.03703
Report, Bibliographie
Kurzbeschreibung (Abstract)
I/O conformance testing theories (e.g., ioco) are concerned with formally defining when observable output behaviors of an implementation conform to those permitted by a specification. Thereupon, several real-time extensions of ioco, usually called tioco, have been proposed, further taking into account permitted delays between actions. In this paper, we propose an improved version of tioco, called live timed ioco (ltioco), tackling various weaknesses of existing definitions. Here, a reasonable adaptation of quiescence (i.e., observable absence of any outputs) to real-time behaviors has to be done with care: ltioco therefore distinguishes safe outputs being allowed to happen, from live outputs being enforced to happen within a certain time period thus inducing two different facets of quiescence. Furthermore, tioco is frequently defined on Timed I/O Labeled Transition Systems (TIOLTS), a semantic model of Timed I/O Automata (TIOA) which is infinitely branching and thus infeasible for practical testing tools. Instead, we extend the theory of zone graphs to enable ltioco testing on a finite semantic model of TIOA. Finally, we investigate compositionality of ltioco with respect to parallel composition including a proper treatment of silent transitions.
| Typ des Eintrags: | Report |
|---|---|
| Erschienen: | 2019 |
| Autor(en): | Luthmann, Lars ; Göttmann, Hendrik ; Lochau, Malte |
| Art des Eintrags: | Bibliographie |
| Titel: | Compositional Liveness-Preserving Conformance Testing of Timed I/O Automata - Technical Report |
| Sprache: | Englisch |
| Publikationsjahr: | 9 September 2019 |
| Verlag: | arXiv |
| Reihe: | Logic in Computer Science |
| Auflage: | 1.Version |
| DOI: | 10.48550/arXiv.1909.03703 |
| URL / URN: | https://arxiv.org/abs/1909.03703 |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | I/O conformance testing theories (e.g., ioco) are concerned with formally defining when observable output behaviors of an implementation conform to those permitted by a specification. Thereupon, several real-time extensions of ioco, usually called tioco, have been proposed, further taking into account permitted delays between actions. In this paper, we propose an improved version of tioco, called live timed ioco (ltioco), tackling various weaknesses of existing definitions. Here, a reasonable adaptation of quiescence (i.e., observable absence of any outputs) to real-time behaviors has to be done with care: ltioco therefore distinguishes safe outputs being allowed to happen, from live outputs being enforced to happen within a certain time period thus inducing two different facets of quiescence. Furthermore, tioco is frequently defined on Timed I/O Labeled Transition Systems (TIOLTS), a semantic model of Timed I/O Automata (TIOA) which is infinitely branching and thus infeasible for practical testing tools. Instead, we extend the theory of zone graphs to enable ltioco testing on a finite semantic model of TIOA. Finally, we investigate compositionality of ltioco with respect to parallel composition including a proper treatment of silent transitions. |
| Fachbereich(e)/-gebiet(e): | 18 Fachbereich Elektrotechnik und Informationstechnik 18 Fachbereich Elektrotechnik und Informationstechnik > Institut für Datentechnik > Echtzeitsysteme 18 Fachbereich Elektrotechnik und Informationstechnik > Institut für Datentechnik |
| Hinterlegungsdatum: | 16 Sep 2019 05:53 |
| Letzte Änderung: | 11 Aug 2023 08:08 |
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