Modeling and Validation of a Software Architecture for the Ariane-5 Launcher

Ober, Iulian; Graf, Susanne; Lesens, David

doi:10.1007/11768869_6

Cited by 8 publications

(7 citation statements)

References 17 publications

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“…P1 is required to access the resource within one time unit, P2 after 3 to 4 time units, and P3 after at least 7 time units; each process may keep the resource for at most 1 time unit. 1 Let us consider the 1 Although this is a made-up example, mutual exclusion actually relies on time slicing in some safety-critical systems [20]. failure scenario shown in Figure 2 (a) where both P2 and P3 access the resource early.…”

Section: Introductionmentioning

confidence: 99%

Blaming in component-based real-time systems

Gößler

Aştefănoaei

2014

Proceedings of the 14th International Conference on Embedded Software

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International audienceIn component-based safety-critical real-time systems it is crucial to determine which com-ponent(s) caused the violation of a required system-level safety property, be it to issue a precise alert, or to determine liability of component providers. In this paper we present an approach for blaming in real-time systems whose component specifications are given as timed automata. The analysis is based on a single execution trace violating a safety property P. We formalize blaming using counterfactual reasoning ("what would have been the outcome if component C had behaved correctly?") to distinguish component failures that actually con-tributed to the outcome from failures that had no impact on the violation of P. We then show how to effectively implement blaming by reducing it to a model-checking problem for timed automata, and demonstrate the feasibility of our approach on the models of a pacemaker and of a chemical reactor

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Section: Introductionmentioning

confidence: 99%

Blaming in component-based real-time systems

Gößler

Aştefănoaei

2014

Proceedings of the 14th International Conference on Embedded Software

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“…Other initiatives prefer the use of model checking coupled with simulation (Ober et al 2003(Ober et al , 2006. These emerged in the context of the Information Society Technologies Omega project.…”

Section: Related Workmentioning

confidence: 97%

“…Properties to be verified are expressed in a formalism called UML observers, defined in the same paper. In another work, Ober et al (2006) present a case study of a complex system validation, namely the control software of the Ariane-5 launcher. The experiment is done on a representative subset of the system, in which both functional and architectural aspects are modelled using Omega UML 1.x profile.…”

Section: Related Workmentioning

confidence: 99%

Synergistic verification and validation of systems and software engineering models

Jarraya

Soeanu

Alawneh

et al. 2009

International Journal of General Systems

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In this paper, we present a unified approach for the verification and validation of software and systems engineering design models expressed in UML 2.0 and SysML 1.0. The approach is based on three well-established techniques, namely formal analysis, programme analysis and software engineering (SwE) techniques. More precisely, our contribution consists of the synergistic combination of model checking, static analysis and SwE metrics that enables the automatic and efficient assessment of design models from static and dynamic perspectives. Additionally, we present the design and implementation of an automated computer-aided assessing framework integrating the proposed approach. Moreover, we discuss the related technical details and the underlying synergism. Finally, we illustrate the proposed approach by assessing a design case study that is composed of state machine and sequence diagrams.

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“…The validation acts on a UML or SysML model, which is first translated to an IF model, and then compiled 2 to an executable program that will be used for automatic verification and interactive simulation. The IFx validation approach has been applied to several industry-grade models such as Ariane-5 [12], MARS [13] and SGS [10], and has proven to be very effective in discovering design issues. As an application to this approach we propose to extend the IFx-OMEGA platform.…”

Section: Extending a Verification Platform With Trace Analysis Supportmentioning

confidence: 99%

Significantly Increasing the Usability of Model Analysis Tools through Visual Feedback

Aboussoror

Ober

2013

Lecture Notes in Computer Science

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A plethora of theoretical results are available which make possible the use of dynamic analysis and model-checking for software and system models expressed in high-level modeling languages like UML, SDL or AADL. Their usage is hindered by the complexity of information processing demanded from the modeler in order to apply them and to effectively exploit their results. Our thesis is that by improving the visual presentation of the analysis results, their exploitation can be highly improved. To support this thesis, we define a trace analysis approach based on the extraction of high-level semantics events from the low-level output of a simulation or model-checking tool. This extraction offers the basis for new types of scenario visualizations, improving scenario understanding and exploration. This approach was implemented in our UML/SysML analyzer and was validated in a controlled experiment that shows a significant increase in the usability of our tool, both in terms of task performance speed and in terms of user satisfaction.

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Modeling and Validation of a Software Architecture for the Ariane-5 Launcher

Cited by 8 publications

References 17 publications

Blaming in component-based real-time systems

Blaming in component-based real-time systems

Synergistic verification and validation of systems and software engineering models

Significantly Increasing the Usability of Model Analysis Tools through Visual Feedback

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