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Reseach Article

System Reliability using Simulation Models and Formal Methods

by Wassim Trojet, Tahar Berradia
International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 132 - Number 17
Year of Publication: 2015
Authors: Wassim Trojet, Tahar Berradia
10.5120/ijca2015907684

Wassim Trojet, Tahar Berradia . System Reliability using Simulation Models and Formal Methods. International Journal of Computer Applications. 132, 17 ( December 2015), 1-8. DOI=10.5120/ijca2015907684

@article{ 10.5120/ijca2015907684,
author = { Wassim Trojet, Tahar Berradia },
title = { System Reliability using Simulation Models and Formal Methods },
journal = { International Journal of Computer Applications },
issue_date = { December 2015 },
volume = { 132 },
number = { 17 },
month = { December },
year = { 2015 },
issn = { 0975-8887 },
pages = { 1-8 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume132/number17/23683-2015907684/ },
doi = { 10.5120/ijca2015907684 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2024-02-06T23:29:51.900633+05:30
%A Wassim Trojet
%A Tahar Berradia
%T System Reliability using Simulation Models and Formal Methods
%J International Journal of Computer Applications
%@ 0975-8887
%V 132
%N 17
%P 1-8
%D 2015
%I Foundation of Computer Science (FCS), NY, USA
Abstract

The general scope of the paper consists of improving the verification of simulation models through the integration of formal methods. We offer a formal verification approach of DEVS models based on Z notation. DEVS is a formalism that allows the description and analysis of the behavior of discrete event systems, i.e., systems whose state change depends on the occurrence of an event. A DEVS model is essentially validated by the simulation which permits of verifying whether it correctly describes the behavior of the system. However, a simulation does not cover all possible cases that means the model is validated only for the expected behaviors. For this reason, we have integrated the Z formal specification language in the DEVS formalism to detect errors before simulation which is still an important step for the validation. This integration consists of: (1) transforming a DEVS model into an equivalent Z specification and (2) verifying the consistency of the DEVS model on the resulting specification using the tools developed by the Z community. Such consistency is fulfilled by determinism and completeness. Thus, a DEVS model is subjected to an automatic formal verification before proceeding to its simulation.

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Index Terms

Computer Science
Information Sciences

Keywords

DEVS Discrete Event Simulation Z Formal Methods Formal Verification