/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/weaver/chl-simpl-str-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:19:47,606 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:19:47,674 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-12-05 21:19:47,699 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:19:47,700 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:19:47,701 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:19:47,701 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:19:47,701 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:19:47,701 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:19:47,705 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:19:47,705 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:19:47,705 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:19:47,705 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:19:47,706 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:19:47,706 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:19:47,707 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:19:47,707 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:19:47,707 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:19:47,707 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:19:47,707 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:19:47,707 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:19:47,708 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:19:47,708 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:19:47,708 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:19:47,708 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:19:47,709 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:19:47,709 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:19:47,709 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:19:47,709 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:19:47,709 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:19:47,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:19:47,710 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:19:47,710 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:19:47,710 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:19:47,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:19:47,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:19:47,945 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:19:47,946 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:19:47,946 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:19:47,947 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-simpl-str-trans.wvr.c [2023-12-05 21:19:49,081 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:19:49,238 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:19:49,239 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-simpl-str-trans.wvr.c [2023-12-05 21:19:49,245 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63694d082/37aea2971af644cba0700a40e26e03e9/FLAG5af90f582 [2023-12-05 21:19:49,256 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63694d082/37aea2971af644cba0700a40e26e03e9 [2023-12-05 21:19:49,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:19:49,259 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:19:49,259 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:19:49,259 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:19:49,263 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:19:49,264 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:19:49" (1/1) ... [2023-12-05 21:19:49,265 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@709483eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:49, skipping insertion in model container [2023-12-05 21:19:49,265 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:19:49" (1/1) ... [2023-12-05 21:19:49,283 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:19:49,452 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:19:49,462 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:19:49,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:19:49,504 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:19:49,505 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:49 WrapperNode [2023-12-05 21:19:49,505 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:19:49,506 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:19:49,507 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:19:49,507 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:19:49,512 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:49" (1/1) ... [2023-12-05 21:19:49,517 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:49" (1/1) ... [2023-12-05 21:19:49,543 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 173 [2023-12-05 21:19:49,544 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:19:49,544 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:19:49,544 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:19:49,544 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:19:49,558 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:49" (1/1) ... [2023-12-05 21:19:49,558 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:49" (1/1) ... [2023-12-05 21:19:49,561 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:49" (1/1) ... [2023-12-05 21:19:49,561 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:49" (1/1) ... [2023-12-05 21:19:49,584 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:49" (1/1) ... [2023-12-05 21:19:49,586 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:49" (1/1) ... [2023-12-05 21:19:49,595 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:49" (1/1) ... [2023-12-05 21:19:49,596 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:49" (1/1) ... [2023-12-05 21:19:49,598 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:19:49,599 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:19:49,599 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:19:49,599 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:19:49,599 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:49" (1/1) ... [2023-12-05 21:19:49,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:19:49,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:19:49,626 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-05 21:19:49,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-05 21:19:49,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:19:49,647 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-05 21:19:49,648 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-05 21:19:49,648 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-05 21:19:49,648 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-05 21:19:49,648 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-12-05 21:19:49,648 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-12-05 21:19:49,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:19:49,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:19:49,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:19:49,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:19:49,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:19:49,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-05 21:19:49,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:19:49,650 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-05 21:19:49,724 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:19:49,726 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:19:50,031 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:19:50,043 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:19:50,043 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-05 21:19:50,044 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:19:50 BoogieIcfgContainer [2023-12-05 21:19:50,045 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:19:50,046 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:19:50,046 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:19:50,051 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:19:50,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:19:49" (1/3) ... [2023-12-05 21:19:50,052 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7750b936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:19:50, skipping insertion in model container [2023-12-05 21:19:50,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:49" (2/3) ... [2023-12-05 21:19:50,052 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7750b936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:19:50, skipping insertion in model container [2023-12-05 21:19:50,053 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:19:50" (3/3) ... [2023-12-05 21:19:50,053 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-trans.wvr.c [2023-12-05 21:19:50,066 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:19:50,066 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-12-05 21:19:50,066 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:19:50,160 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-12-05 21:19:50,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 231 transitions, 483 flow [2023-12-05 21:19:50,254 INFO L124 PetriNetUnfolderBase]: 13/228 cut-off events. [2023-12-05 21:19:50,254 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-12-05 21:19:50,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 228 events. 13/228 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 491 event pairs, 0 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 151. Up to 2 conditions per place. [2023-12-05 21:19:50,268 INFO L82 GeneralOperation]: Start removeDead. Operand has 228 places, 231 transitions, 483 flow [2023-12-05 21:19:50,278 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 204 transitions, 423 flow [2023-12-05 21:19:50,287 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:19:50,292 INFO L362 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2d7ca228, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:19:50,292 INFO L363 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-12-05 21:19:50,300 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:19:50,300 INFO L124 PetriNetUnfolderBase]: 0/47 cut-off events. [2023-12-05 21:19:50,300 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:19:50,300 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:19:50,301 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:19:50,301 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-12-05 21:19:50,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:19:50,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1372605941, now seen corresponding path program 1 times [2023-12-05 21:19:50,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:19:50,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426592332] [2023-12-05 21:19:50,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:19:50,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:19:50,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:19:50,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:19:50,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:19:50,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426592332] [2023-12-05 21:19:50,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426592332] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:19:50,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:19:50,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:19:50,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689178] [2023-12-05 21:19:50,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:19:50,733 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:19:50,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:19:50,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:19:50,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:19:50,772 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 231 [2023-12-05 21:19:50,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 204 transitions, 423 flow. Second operand has 3 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:19:50,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:19:50,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 231 [2023-12-05 21:19:50,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:19:50,867 INFO L124 PetriNetUnfolderBase]: 6/196 cut-off events. [2023-12-05 21:19:50,867 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-05 21:19:50,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 196 events. 6/196 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 464 event pairs, 0 based on Foata normal form. 24/202 useless extension candidates. Maximal degree in co-relation 161. Up to 20 conditions per place. [2023-12-05 21:19:50,874 INFO L140 encePairwiseOnDemand]: 222/231 looper letters, 23 selfloop transitions, 1 changer transitions 0/196 dead transitions. [2023-12-05 21:19:50,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 196 transitions, 455 flow [2023-12-05 21:19:50,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:19:50,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:19:50,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 605 transitions. [2023-12-05 21:19:50,888 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.873015873015873 [2023-12-05 21:19:50,889 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 605 transitions. [2023-12-05 21:19:50,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 605 transitions. [2023-12-05 21:19:50,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:19:50,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 605 transitions. [2023-12-05 21:19:50,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:19:50,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:19:50,903 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:19:50,906 INFO L308 CegarLoopForPetriNet]: 202 programPoint places, 0 predicate places. [2023-12-05 21:19:50,907 INFO L500 AbstractCegarLoop]: Abstraction has has 202 places, 196 transitions, 455 flow [2023-12-05 21:19:50,907 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:19:50,907 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:19:50,907 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:19:50,908 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:19:50,908 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-12-05 21:19:50,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:19:50,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1372605940, now seen corresponding path program 1 times [2023-12-05 21:19:50,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:19:50,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167363483] [2023-12-05 21:19:50,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:19:50,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:19:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:19:51,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:19:51,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:19:51,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167363483] [2023-12-05 21:19:51,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167363483] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:19:51,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:19:51,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-05 21:19:51,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325444553] [2023-12-05 21:19:51,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:19:51,183 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-05 21:19:51,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:19:51,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-05 21:19:51,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-05 21:19:51,186 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 231 [2023-12-05 21:19:51,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 196 transitions, 455 flow. Second operand has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:19:51,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:19:51,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 231 [2023-12-05 21:19:51,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:19:51,261 INFO L124 PetriNetUnfolderBase]: 6/194 cut-off events. [2023-12-05 21:19:51,262 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-12-05 21:19:51,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 194 events. 6/194 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 458 event pairs, 0 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 175. Up to 22 conditions per place. [2023-12-05 21:19:51,264 INFO L140 encePairwiseOnDemand]: 228/231 looper letters, 25 selfloop transitions, 1 changer transitions 0/194 dead transitions. [2023-12-05 21:19:51,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 194 transitions, 499 flow [2023-12-05 21:19:51,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:19:51,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:19:51,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 589 transitions. [2023-12-05 21:19:51,267 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.84992784992785 [2023-12-05 21:19:51,267 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 589 transitions. [2023-12-05 21:19:51,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 589 transitions. [2023-12-05 21:19:51,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:19:51,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 589 transitions. [2023-12-05 21:19:51,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:19:51,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:19:51,271 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:19:51,271 INFO L308 CegarLoopForPetriNet]: 202 programPoint places, 0 predicate places. [2023-12-05 21:19:51,271 INFO L500 AbstractCegarLoop]: Abstraction has has 202 places, 194 transitions, 499 flow [2023-12-05 21:19:51,272 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:19:51,272 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:19:51,272 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:19:51,272 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 21:19:51,272 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-12-05 21:19:51,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:19:51,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1949597670, now seen corresponding path program 1 times [2023-12-05 21:19:51,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:19:51,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078319709] [2023-12-05 21:19:51,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:19:51,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:19:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:19:51,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:19:51,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:19:51,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078319709] [2023-12-05 21:19:51,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078319709] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:19:51,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:19:51,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:19:51,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133857461] [2023-12-05 21:19:51,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:19:51,387 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:19:51,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:19:51,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:19:51,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:19:51,391 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 231 [2023-12-05 21:19:51,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 194 transitions, 499 flow. Second operand has 3 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:19:51,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:19:51,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 231 [2023-12-05 21:19:51,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:19:51,444 INFO L124 PetriNetUnfolderBase]: 6/192 cut-off events. [2023-12-05 21:19:51,444 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-12-05 21:19:51,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 192 events. 6/192 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 448 event pairs, 0 based on Foata normal form. 2/180 useless extension candidates. Maximal degree in co-relation 186. Up to 20 conditions per place. [2023-12-05 21:19:51,450 INFO L140 encePairwiseOnDemand]: 228/231 looper letters, 20 selfloop transitions, 1 changer transitions 0/192 dead transitions. [2023-12-05 21:19:51,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 192 transitions, 533 flow [2023-12-05 21:19:51,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:19:51,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:19:51,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 605 transitions. [2023-12-05 21:19:51,452 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.873015873015873 [2023-12-05 21:19:51,452 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 605 transitions. [2023-12-05 21:19:51,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 605 transitions. [2023-12-05 21:19:51,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:19:51,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 605 transitions. [2023-12-05 21:19:51,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:19:51,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:19:51,455 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:19:51,457 INFO L308 CegarLoopForPetriNet]: 202 programPoint places, 0 predicate places. [2023-12-05 21:19:51,457 INFO L500 AbstractCegarLoop]: Abstraction has has 202 places, 192 transitions, 533 flow [2023-12-05 21:19:51,458 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:19:51,458 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:19:51,458 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:19:51,458 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 21:19:51,458 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-12-05 21:19:51,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:19:51,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1949597671, now seen corresponding path program 1 times [2023-12-05 21:19:51,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:19:51,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475610790] [2023-12-05 21:19:51,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:19:51,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:19:51,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:19:51,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:19:51,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:19:51,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475610790] [2023-12-05 21:19:51,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475610790] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:19:51,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:19:51,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:19:51,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382525553] [2023-12-05 21:19:51,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:19:51,537 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:19:51,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:19:51,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:19:51,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:19:51,542 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 231 [2023-12-05 21:19:51,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 192 transitions, 533 flow. Second operand has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:19:51,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:19:51,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 231 [2023-12-05 21:19:51,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:19:51,632 INFO L124 PetriNetUnfolderBase]: 6/190 cut-off events. [2023-12-05 21:19:51,632 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2023-12-05 21:19:51,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 190 events. 6/190 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 435 event pairs, 0 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 195. Up to 18 conditions per place. [2023-12-05 21:19:51,634 INFO L140 encePairwiseOnDemand]: 228/231 looper letters, 19 selfloop transitions, 1 changer transitions 0/190 dead transitions. [2023-12-05 21:19:51,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 190 transitions, 557 flow [2023-12-05 21:19:51,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:19:51,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:19:51,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2023-12-05 21:19:51,635 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8585858585858586 [2023-12-05 21:19:51,636 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2023-12-05 21:19:51,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2023-12-05 21:19:51,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:19:51,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2023-12-05 21:19:51,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:19:51,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:19:51,639 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:19:51,641 INFO L308 CegarLoopForPetriNet]: 202 programPoint places, 0 predicate places. [2023-12-05 21:19:51,641 INFO L500 AbstractCegarLoop]: Abstraction has has 202 places, 190 transitions, 557 flow [2023-12-05 21:19:51,641 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:19:51,642 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:19:51,643 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:19:51,643 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 21:19:51,644 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-12-05 21:19:51,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:19:51,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1177828650, now seen corresponding path program 1 times [2023-12-05 21:19:51,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:19:51,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533002859] [2023-12-05 21:19:51,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:19:51,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:19:51,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:19:51,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:19:51,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:19:51,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533002859] [2023-12-05 21:19:51,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533002859] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:19:51,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:19:51,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:19:51,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796809752] [2023-12-05 21:19:51,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:19:51,721 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:19:51,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:19:51,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:19:51,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:19:51,723 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 231 [2023-12-05 21:19:51,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 190 transitions, 557 flow. Second operand has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:19:51,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:19:51,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 231 [2023-12-05 21:19:51,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:19:51,765 INFO L124 PetriNetUnfolderBase]: 6/188 cut-off events. [2023-12-05 21:19:51,765 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-12-05 21:19:51,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 188 events. 6/188 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 429 event pairs, 0 based on Foata normal form. 2/178 useless extension candidates. Maximal degree in co-relation 204. Up to 16 conditions per place. [2023-12-05 21:19:51,767 INFO L140 encePairwiseOnDemand]: 228/231 looper letters, 18 selfloop transitions, 1 changer transitions 0/188 dead transitions. [2023-12-05 21:19:51,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 188 transitions, 583 flow [2023-12-05 21:19:51,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:19:51,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:19:51,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 603 transitions. [2023-12-05 21:19:51,768 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8701298701298701 [2023-12-05 21:19:51,768 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 603 transitions. [2023-12-05 21:19:51,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 603 transitions. [2023-12-05 21:19:51,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:19:51,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 603 transitions. [2023-12-05 21:19:51,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:19:51,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:19:51,771 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:19:51,773 INFO L308 CegarLoopForPetriNet]: 202 programPoint places, 0 predicate places. [2023-12-05 21:19:51,773 INFO L500 AbstractCegarLoop]: Abstraction has has 202 places, 188 transitions, 583 flow [2023-12-05 21:19:51,773 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:19:51,773 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:19:51,773 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:19:51,774 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-05 21:19:51,774 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-12-05 21:19:51,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:19:51,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1177828651, now seen corresponding path program 1 times [2023-12-05 21:19:51,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:19:51,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899636885] [2023-12-05 21:19:51,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:19:51,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:19:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:19:51,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:19:51,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:19:51,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899636885] [2023-12-05 21:19:51,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899636885] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:19:51,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:19:51,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:19:51,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320967362] [2023-12-05 21:19:51,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:19:51,823 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:19:51,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:19:51,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:19:51,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:19:51,824 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 231 [2023-12-05 21:19:51,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 188 transitions, 583 flow. Second operand has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:19:51,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:19:51,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 231 [2023-12-05 21:19:51,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:19:51,865 INFO L124 PetriNetUnfolderBase]: 6/186 cut-off events. [2023-12-05 21:19:51,866 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2023-12-05 21:19:51,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 186 events. 6/186 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 420 event pairs, 0 based on Foata normal form. 2/176 useless extension candidates. Maximal degree in co-relation 211. Up to 14 conditions per place. [2023-12-05 21:19:51,867 INFO L140 encePairwiseOnDemand]: 228/231 looper letters, 0 selfloop transitions, 0 changer transitions 186/186 dead transitions. [2023-12-05 21:19:51,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 186 transitions, 599 flow [2023-12-05 21:19:51,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:19:51,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:19:51,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 593 transitions. [2023-12-05 21:19:51,869 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8556998556998557 [2023-12-05 21:19:51,869 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 593 transitions. [2023-12-05 21:19:51,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 593 transitions. [2023-12-05 21:19:51,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:19:51,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 593 transitions. [2023-12-05 21:19:51,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:19:51,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:19:51,872 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:19:51,873 INFO L308 CegarLoopForPetriNet]: 202 programPoint places, 0 predicate places. [2023-12-05 21:19:51,874 INFO L500 AbstractCegarLoop]: Abstraction has has 202 places, 186 transitions, 599 flow [2023-12-05 21:19:51,874 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:19:51,883 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/chl-simpl-str-trans.wvr.c_BEv2_AllErrorsAtOnce [2023-12-05 21:19:51,915 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 15 remaining) [2023-12-05 21:19:51,916 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 15 remaining) [2023-12-05 21:19:51,916 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 15 remaining) [2023-12-05 21:19:51,916 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2023-12-05 21:19:51,916 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2023-12-05 21:19:51,916 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2023-12-05 21:19:51,916 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 15 remaining) [2023-12-05 21:19:51,916 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2023-12-05 21:19:51,916 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2023-12-05 21:19:51,917 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2023-12-05 21:19:51,917 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 15 remaining) [2023-12-05 21:19:51,917 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 15 remaining) [2023-12-05 21:19:51,917 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 15 remaining) [2023-12-05 21:19:51,917 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 15 remaining) [2023-12-05 21:19:51,917 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 15 remaining) [2023-12-05 21:19:51,917 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-05 21:19:51,918 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-05 21:19:51,920 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-05 21:19:51,920 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-05 21:19:51,930 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:19:51 BasicIcfg [2023-12-05 21:19:51,930 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-05 21:19:51,932 INFO L158 Benchmark]: Toolchain (without parser) took 2671.86ms. Allocated memory is still 367.0MB. Free memory was 314.1MB in the beginning and 240.7MB in the end (delta: 73.4MB). Peak memory consumption was 73.7MB. Max. memory is 8.0GB. [2023-12-05 21:19:51,932 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 235.9MB. Free memory is still 185.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:19:51,932 INFO L158 Benchmark]: CACSL2BoogieTranslator took 246.07ms. Allocated memory is still 367.0MB. Free memory was 314.1MB in the beginning and 302.8MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-05 21:19:51,933 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.16ms. Allocated memory is still 367.0MB. Free memory was 302.5MB in the beginning and 300.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:19:51,933 INFO L158 Benchmark]: Boogie Preprocessor took 53.89ms. Allocated memory is still 367.0MB. Free memory was 300.4MB in the beginning and 299.1MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-05 21:19:51,933 INFO L158 Benchmark]: RCFGBuilder took 446.06ms. Allocated memory is still 367.0MB. Free memory was 298.7MB in the beginning and 278.4MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-12-05 21:19:51,933 INFO L158 Benchmark]: TraceAbstraction took 1883.93ms. Allocated memory is still 367.0MB. Free memory was 277.7MB in the beginning and 240.7MB in the end (delta: 37.1MB). Peak memory consumption was 38.1MB. Max. memory is 8.0GB. [2023-12-05 21:19:51,934 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 235.9MB. Free memory is still 185.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 246.07ms. Allocated memory is still 367.0MB. Free memory was 314.1MB in the beginning and 302.8MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 37.16ms. Allocated memory is still 367.0MB. Free memory was 302.5MB in the beginning and 300.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 53.89ms. Allocated memory is still 367.0MB. Free memory was 300.4MB in the beginning and 299.1MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 446.06ms. Allocated memory is still 367.0MB. Free memory was 298.7MB in the beginning and 278.4MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 1883.93ms. Allocated memory is still 367.0MB. Free memory was 277.7MB in the beginning and 240.7MB in the end (delta: 37.1MB). Peak memory consumption was 38.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 336 locations, 15 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.7s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 95 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 95 mSDsluCounter, 35 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 121 IncrementalHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 34 mSDtfsCounter, 121 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=599occurred in iteration=6, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 318 NumberOfCodeBlocks, 318 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 312 ConstructedInterpolants, 0 QuantifiedInterpolants, 1541 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-05 21:19:51,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...