Logic for Programming, Artificial Intelligence, and Reasoning

ThisvolumecontainsthepaperspresentedattheNinthInternationalC- ferenceonLogicforProgramming,Arti?cialIntelligence,andReasoning(LPAR 2002),heldonOctober14-18,2002,attheUniversityofTbilisi(Georgia),- getherwiththeThirdInternationalWorkshoponImplementationofLogics. Therewere68submissions,ofwhicheightbelongedtothespecialsubmission categoryofexperimentalpapers,intendedtodescribeimplementationsorc- parisonsofsystems,orexperimentswithsystems. Eachsubmissionwasreviewed byatleastthreeprogramcommitteemembersandanelectronicprogramc- mitteemeetingwasheldviatheInternet. Thenumberofsubmissionsandshort reviewingperiodcausedalargeamountofwork,andweareverygratefultothe other22PCmembersfortheire?ciencyandforthequalityoftheirreviewsand discussions. Finally,thecommitteedecidedtoaccept30papers. Theprogramme alsoincludesthreeinvitedlecturesandapostersession. Apartfromtheprogrammecomittee,wewouldalsoliketothanktheother people who made LPAR 2002 possible: the additional referees, and the local arrangementschairsKhimuriRhukia,KotePhakadze,GelaChankvetadze,and JemalAntidze. TheInternet-basedsubmissionsoftwareandtheprogramcommitteedisc- sionsoftwarewereprovidedbythesecondco-chair. August2002 MatthiasBaaz AndreiVoronkov ConferenceOrganization ProgramChairs MatthiasBaaz(TechnischeUniversit..atWien) AndreiVoronkov(UniversityofManchester) ProgramCommittee ElviraAlbert(UniversidadPolitecnicadeValencia) FranzBaader(TechnischeUniversit..atDresden) MauriceBruynooghe(KatholiekeUniversiteitLeuven) PatrickCousot(ENSParis) MaartendeRijke(UniversityofAmsterdam) HaraldGanzinger(Max-PlanckInstitut,Saarbruc ..ken) JeanGoubault-Larrecq(ENSdeCachan) MikiHermann(EcolePolytechnique) MatejaJamnik(UniversityofCambridge) NeilJones(KobenhavnsUniversitet) DeepakKapur(UniversityofNewMexico) MaurizioLenzerini(Universit'adiRoma"LaSapienza") GiorgioLevi(Universit'adiPisa) LeonidLibkin(UniversityofToronto) RobertNieuwenhuis(TechnicalUniversityofCatalonia) LeszekPacholski(WroclawskiUniwersytet) MichelParigot(Universit'eParis7) PavelPudlak(MathematicalInstitute,Prague) CarstenSchuermann(YaleUniversity) J..orgSiekmann(DFKISaarbruc ..ken) WolfgangThomas(RWTHAachen) MichaelZakharyaschev(King'sCollege) LocalOrganization KhimuriRhukia KotePhakadze GelaChankvetadze JemalAntidze VIII ConferenceOrganization ListofReferees GianlucaAmato CarlosAreces M. Arenas OferArieli RobertoBarbuti ChristophBenzmueller MartaBilkova BrunoBlanchet AlexandreBoisseau AhmedBouajjani DmitriChubarov PabloCordero VeroniqueCortier AgostinoDovier RachidEchahed MorenoFalaschi C'esarFerri OlivierGasquet BernhardGramlich Jos'eManuelG'omez PhilippedeGroote RainerHaehnle JiriHanika JuanHeguiabehere JoseHernandez-Orallo ThomasHillenbrand JoeHurd EmilJerabek ValentinJijkoun KonstantinKorovin G. Lakemeyer DominiqueLarchey-Wendling OlivierLaurent StefanLeue LuigiLiquori ChristofLoeding CarstenLutz ChristopherLynch PatrickMaier PaoloMancarella FlorenceMaraninchi MaartenMarx Jesus ' Medina EricaMelis AntoineMin'e RalfM..oller PaulinDeNaurois HansdeNivelle MichaelNorrish ManuelOjeda-Aciego NikolayPelov GuyPerrier ReinhardPichler ChristopherPollett Germ'anPuebla Jean-PierreRessayre ChristianRetor'e AlexandreRiazanov MichalRossler PaulRozi'ere NikitaSakhanenko UlrikeSattler StefanSchlobach ManfredSchmidt-Schauss KonradSlind Anni-YasminTurhan ChristianUrban WimVanhoof YdeVenema So?e Verbaeten UweWaldmann KlausWeich ClausPeterWirth StefanWoehrle ConferenceOrganization IX ConferencesprecedingLPAR2001 RCLP'90,Irkutsk,SovietUnion RCLP'91,Leningrad,SovietUnion,aboardtheship"MichailLomonosov" LPAR'92,St. Petersburg,Russia,aboardtheship"MichailLomonosov" LPAR'93,St. Petersburg,Russia LPAR'94,Kiev,Ukraine,aboardtheship"MarshalKoshevoi" LPAR'99,Tbilisi,RepublicofGeorgia LPAR2000,ReunionIsland,France LPAR2001,Havana,Cuba TableofContents ImprovingOn-DemandStrategyAnnotations ...1 M. Alpuente,S. Escobar,B. Gramlich,S. Lucas First-OrderLogicasaConstraintProgrammingLanguage...19 K. R. Apt,C. F. M. Vermeulen MaintenanceofFormalSoftwareDevelopmentsby Strati?edVeri?cation...36 SergeAutexier,DieterHutter ANoteonUniversalMeasuresforWeakImplicit ComputationalComplexity ...53 ArnoldBeckmann ExtendingCompositionalMessageSequenceGraphs...68 BenediktBollig,MartinLeucker,PhilippLucas SearchingforInvariantsUsingTemporalResolution ...86 JamesBrotherston,AnatoliDegtyarev,MichaelFisher, AlexeiLisitsa ProofPlanningforFeatureInteractions:APreliminaryReport...102 ClaudioCastellini,AlanSmaill AnExtensionofBDI withFunctional CTL DependenciesandComponents...1 15 MehdiDastani,LeendertvanderTorre BindingLogic:ProofsandModels ...130 GillesDowek,Th'er'eseHardin,ClaudeKirchner DirectedAutomatedTheoremProving...145 StefanEdelkamp,PeterLeven AFrameworkforSplittingBDIAgents...160 XiaocongFan,JohnYen OntheComplexityofDisjunctionandExplicitDe?nability PropertiesinSomeIntermediateLogics...175 MauroFerrari,CamilloFiorentini,GuidoFiorino UsingBDDswithCombinationsofTheories ...190 PascalFontaine,E. PascalGribomont XII TableofContents OnExpressiveDescriptionLogicswithCompositionofRolesin NumberRestrictions...202 FabioGrandi QueryOptimizationofDisjunctiveDatabaseswithConstraints throughBindingPropagation ...216 GianluigiGreco,SergioGreco,IrinaTrubtsyna,EsterZumpano ANon-commutativeExtensionofMELL...231 AlessioGuglielmi,LutzStrassburger ProceduralSemanticsforFuzzyDisjunctivePrograms...247 Du?sanGuller PushdownSpeci?cations...262 OrnaKupferman,NirPiterman,MosheY. Vardi TheoremProvingwithSequenceVariablesandFlexible AritySymbols...