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ReSA Tool: Structured requirements specification and SAT-based consistency checking
Mälardalen University, School of Innovation, Design and Engineering, Embedded Systems. (Formal Modelling and Analysis of Embedded Systems)ORCID iD: 0000-0002-5626-0587
Mälardalen University, School of Innovation, Design and Engineering, Embedded Systems. (Formal Modelling and Analysis of Embedded Systems)ORCID iD: 0000-0003-2870-2680
Volvo Group Trucks Technology, Sweden.
2016 (English)In: ReSA Tool: Structured requirements specification and SAT-based consistency-checking, 2016, 1737-1746 p.Conference paper, (Refereed)
Abstract [en]

Most industrial embedded systems requirements are specified in natural language, hence they can sometimes be ambiguous and error-prone. Moreover, employing an early-stage model-based incremental system development using multiple levels of abstraction, for instance via architectural languages such as EAST-ADL, calls for different granularity requirements specifications described with abstraction-specific concepts that reflect the respective abstraction level effectively. In this paper, we propose a toolchain for structured requirements specification in the ReSA language, which scales to multiple EAST-ADL levels of abstraction. Furthermore, we introduce a consistency function that is seamlessly integrated into the specification toolchain, for the automatic analysis of requirements logical consistency prior to their temporal logic formalization for full formal verification. The consistency check subsumes two parts: (i) transforming ReSA requirements specification into boolean expressions, and (ii) checking the consistency of the resulting boolean expressions by solving the satisfiability of their conjunction with the Z3 SMT solver. For validation, we apply the ReSA toolchain on an industrial vehicle speed control system, namely the Adjustable Speed Limiter.

Place, publisher, year, edition, pages
2016. 1737-1746 p.
Series
2016 Federated Conference on Computer Science and Information Systems (FedCSIS
Keyword [en]
requirements specification, consistency checking, formal methods, embedded systems, automotive systems, software tool
National Category
Embedded Systems
Research subject
Computer Science
Identifiers
URN: urn:nbn:se:mdh:diva-34005DOI: 10.15439/2016F404ISI: 000392436600246Scopus ID: 2-s2.0-85007240246ISBN: 978-8-3608-1090-3 (print)OAI: oai:DiVA.org:mdh-34005DiVA: diva2:1050648
Conference
2016 Federated Conference on Computer Science and Information Systems, FedCSIS 2016; Gdansk; Poland; 11 September 2016 through 14 September 2016
Projects
VeriSpec
Funder
VINNOVA, 16335
Available from: 2016-11-29 Created: 2016-11-29 Last updated: 2017-05-24Bibliographically approved
In thesis
1. Ontology-based Analysis and Scalable Model Checking of Embedded Systems Models
Open this publication in new window or tab >>Ontology-based Analysis and Scalable Model Checking of Embedded Systems Models
2017 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

Currently, there is lack of effective and scalable methods to specify and ana-lyze requirements specifications, and verify the behavioral models of embed-ded systems. Most embedded systems requirements are expressed in naturallanguage which is flexible and intuitive but frequently ambiguous, vague andincomprehensive. Besides to natural language, template-based requirementsspecification methods are used to specify requirements specifications (esp. insafety-critical applications), which reduce ambiguity and improves the com-prehensibility of the specifications. However, the template-based method areusually rigid due to the fixed structures of the templates. They also lack meta-models for extensibility, and template selection is challenging.In this thesis, we proposed a domain specific language for embedded sys-tems, called ReSA, which is constrained natural language but flexible enoughto allow engineers to use different constructs to specify requirements. Thelanguage has formal semantics in proportional logic and description logic thatenables non-trivial and rigorous analysis of requirements specification, e.g.,consistency checking, completeness of specifications, etc.Moreover, we propose a scalable formal verification of Simulink models,whichisusedtodescribethebehaviorofsystemsthroughcommunicatingfunc-tional blocks. In industry, Simulink is the de facto modeling and analysis en-vironment of embedded systems. It is also used to generate code automati-cally from special Simulink models for various hardware platforms. However,Simulink lacks formal approach to verify large and hybrid Simulink models.Therefore, we also propose a formal verification of Simulink models, repre-sented as stochastic timed automata, using statistical model checking, whichhas proven to scale for industrial applications.We validate our approaches on industrial use cases from the automotiveindustry. These includes Adjustable Speed Limiter (ASL) and Brake-By-Wire(BBW) systems from Volvo Group Trucks Technology, both safety-critical.

Place, publisher, year, edition, pages
Västerås: Mälardalen University, 2017. 200 p.
Series
Mälardalen University Press Licentiate Theses, ISSN 1651-9256 ; 262
Keyword
requirements specification, embedded systems, ontology, formal methods, simulink, sat, domain specific language, requirements boilerplates
National Category
Embedded Systems
Research subject
Computer Science
Identifiers
urn:nbn:se:mdh:diva-35386 (URN)978-91-7485-337-7 (ISBN)
Presentation
2017-06-16, Gamma, Mälardalens högskola, Västerås, 13:15 (English)
Opponent
Supervisors
Projects
Verispec
Funder
VINNOVA, 16335
Available from: 2017-05-24 Created: 2017-05-24 Last updated: 2017-07-10Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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More styles
Language
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Output format
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