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Executablemodelingandsimula2onofsystemso5wareandprocesses
So1wareEngineeringLab,Dept.ComputerScience
Université de Mons
So5ware-controlledsystemsareomnipresent
Prof.TomMens ServicedeGénieLogiciel Départementd’InformaEque
Université de Mons
Controlso1warecanbeverycomplex§ ConEnuousinteracEonbetweenso1wareandhardware§ ConEnuousinteracEonwithexternalworldandusers§ Mustrespectfunc%onalrequirements
§ Vendingmachinedoesnotdispensecorrectbeverage§ Cashmachinereturnsmorecashthanrequested§ …
§ Mustrespectnon-func%onalrequirements§ Safety/Security/Performance/Energyconstraints/Maintainability/Usability/…§ Microwave/elevatorshouldnotfuncEonwithopendoors§ Trafficlightsshouldneverbegreensimultaneously
So5ware-controlledsystemsaredifficulttodevelop
3Prof.TomMens ServicedeGénieLogiciel Départementd’InformaEque
Université de Mons
Example1:Modèle du processus d’engagement de personnel UMONS (version 1, 2013)
Thesameistruefor(business)processes
4Prof.TomMens ServicedeGénieLogiciel Départementd’InformaEque
Université de Mons
Example2:Distributed software development and bug fixing processes
Thesameistruefor(business)processes
5Prof.TomMens ServicedeGénieLogiciel Départementd’InformaEque
Université de Mons
• beUerunderstandtheproblem• reducethe“accidentalcomplexity”ofthe
soluEon• detecterrorsearly
• TestorverifythesoluEonbeforeitisactuallyimplemented
• explorethedesignspace• comparealternaEvesoluEonsthroughsimulaEon
Modelsimula2onandanalysiscanhelpto…
6Prof.TomMens ServicedeGénieLogiciel Départementd’InformaEque
Université de Mons
• AllowtoexpressthesoluEonatahigherlevelofabstracEonthantradiEonalprogramminglanguages
• Providesupportfor• Simula%ngthedesiredbehaviourorprocess• Genera%ngso1warecodeautomaEcallyfromthesimulated
modelinorderto• Executeandintegratethegeneratedso1warewithotherso1wareor
hardware• Supportorcontrolthemodeledprocess
• Verifyingcorrectnessofthemodeledbehaviour
Modelinglanguages
7Prof.TomMens ServicedeGénieLogiciel Départementd’InformaEque
Université de Mons
ModelingLanguagesExample:Statecharts
8Prof.TomMens ServicedeGénieLogiciel Départementd’InformaEque
Université de Mons
ManytoolsforsimulaEonandexecuEonExample:Yakindu(www.statecharts.org)
ModelingToolsExample:Statecharts
9Prof.TomMens ServicedeGénieLogiciel Départementd’InformaEque
Université de Mons
SISMIC(createdbyA.Decan)AtoolunderdevelopmentatSo1wareEngineeringLab(UMONS)to• Simulatestatecharts• IntegratewithPythoncode• FacilitatetesEng
(basedon“stories”)• SupportmulEple
communicaEngstatecharts• Expressstatechartcontracts
(invariants,pre-andpostcondiEons)• Andmanymore…SeehUps://github.com/AlexandreDecan/sismic
ModelingLanguagesExample:Statecharts
10Prof.TomMens ServicedeGénieLogiciel Départementd’InformaEque
Université de Mons
ModelingLanguagesExample:Petrinets
11Prof.TomMens ServicedeGénieLogiciel Départementd’InformaEque
See “Petri Nets World” for more information http://www.informatik.uni-hamburg.de/TGI/PetriNets
Université de Mons
ManytoolsforsimulaEonandformalanalysisExample:Pipe2(pipe2.sourceforge.net)
ModelingtoolsExample:Petrinets
12Prof.TomMens ServicedeGénieLogiciel Départementd’InformaEque
Université de Mons
ModelinglanguagesExamples:BPMN
13Prof.TomMens ServicedeGénieLogiciel Départementd’InformaEque
Université de Mons
Example:VisualParadigmSimulateexecuEonofbusinessprocessto• StudyresourceconsumpEon(e.g.humanresources,devices)
throughouttheprocess• Evaluatecost• IdenEfyboUlenecks• ComparedesignalternaEves
ModelingtoolsBPMN
14Prof.TomMens ServicedeGénieLogiciel Départementd’InformaEque
Université de Mons
Modelverifica2onandmodelchecking
Verifyifthemodelhasalldesirableproper2es(structural,behavioural,temporal,…)UsemostappropriateformalismUsemostappropriate(modelchecking)tool
Examples• Reachability• Safety:somethingshouldnever
happen• Liveness:somethingmusteventually
happen• Fairness:everypossibleprocess
shouldbeexecutedinfinitelyo1en
• lineartemporallogic(LTL)• computaEontreelogic(CTL)• …• SPIN• Alloy• …
15Prof.TomMens ServicedeGénieLogiciel Départementd’InformaEque
Université de Mons
ProvidebeUertoolsupportandformalsupportfor• Domain-specificmodeling
• Expressmodelsinalanguageclosetothedomainexpert
• Human-computerinteracEonmodeling• E.g.tocontrolrobots
• Model-basedtesEng• FacilitatetesEngofmodels/generateautomatedtestsfrommodels
• DesignspaceexploraEon• EvaluatethequaliEesofalternaEvemodels
• ModelevoluEon• FacilitatechangingthemodelwhilepreservingitsdesirableproperEes
Challenges
16Prof.TomMens ServicedeGénieLogiciel Départementd’InformaEque
Université de Mons
Example:AmodelinglanguageforgesturalinteracEon(GISMO,PhDthesisRomualdDeshayes,UMONS,2015)
ChallengesDomain-specificso5waremodeling
17Prof.TomMens ServicedeGénieLogiciel Départementd’InformaEque
Université de Mons
Example:AmodelinglanguageforgesturalinteracEon(GISMO,PhDthesisRomualdDeshayes,UMONS,2015)
ChallengesDomain-specificso5waremodeling
18Prof.TomMens ServicedeGénieLogiciel Départementd’InformaEque
Université de Mons
ChallengesExecutablerobotmodeling
19
MémoireChristopheD’Hondt
Université de Mons
• Researchinprogress• Property-basedtesEng
• Generatesimplesttestcasesthatviolateagivenproperty/invariant
• Designbycontract• Expresspre-andpostcondiEonsandinvariantsonthemodel• RaiseexcepEonsduringsimulaEon/execuEonifcontractviolated
• TestgeneraEon• UsemodeltogeneratetestsforsourcecodeautomaEcally
• MutaEontesEng• ToevaluateandimproveexisEngtestsuite
ChallengesModel-basedtes2ng
20
