/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/fibonacci.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:19:56,605 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:19:56,692 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 21:19:56,728 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:19:56,729 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:19:56,729 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:19:56,730 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:19:56,730 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:19:56,731 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:19:56,731 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:19:56,731 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:19:56,732 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:19:56,735 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:19:56,738 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:19:56,739 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:19:56,739 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:19:56,740 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:19:56,740 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:19:56,740 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:19:56,741 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:19:56,741 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:19:56,742 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:19:56,742 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:19:56,742 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:19:56,742 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:19:56,743 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:19:56,743 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:19:56,743 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:19:56,743 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:19:56,744 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:19:56,744 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:19:56,745 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:19:56,745 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:19:56,745 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:19:56,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:19:57,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:19:57,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:19:57,006 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:19:57,007 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:19:57,008 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/fibonacci.wvr.c [2023-12-05 21:19:58,181 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:19:58,401 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:19:58,402 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/fibonacci.wvr.c [2023-12-05 21:19:58,410 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd53bac37/426cc73a385349428604293bd90c5d4d/FLAGc680a4258 [2023-12-05 21:19:58,421 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd53bac37/426cc73a385349428604293bd90c5d4d [2023-12-05 21:19:58,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:19:58,423 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:19:58,424 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:19:58,424 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:19:58,430 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:19:58,431 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:19:58" (1/1) ... [2023-12-05 21:19:58,432 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b3fd61e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:58, skipping insertion in model container [2023-12-05 21:19:58,432 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:19:58" (1/1) ... [2023-12-05 21:19:58,453 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:19:58,573 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:19:58,582 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:19:58,603 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:19:58,614 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:19:58,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:58 WrapperNode [2023-12-05 21:19:58,615 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:19:58,616 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:19:58,616 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:19:58,616 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:19:58,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:58" (1/1) ... [2023-12-05 21:19:58,627 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:58" (1/1) ... [2023-12-05 21:19:58,653 INFO L138 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 174 [2023-12-05 21:19:58,653 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:19:58,654 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:19:58,654 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:19:58,654 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:19:58,662 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:58" (1/1) ... [2023-12-05 21:19:58,662 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:58" (1/1) ... [2023-12-05 21:19:58,669 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:58" (1/1) ... [2023-12-05 21:19:58,669 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:58" (1/1) ... [2023-12-05 21:19:58,675 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:58" (1/1) ... [2023-12-05 21:19:58,684 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:58" (1/1) ... [2023-12-05 21:19:58,686 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:58" (1/1) ... [2023-12-05 21:19:58,687 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:58" (1/1) ... [2023-12-05 21:19:58,690 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:19:58,691 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:19:58,691 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:19:58,691 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:19:58,692 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:58" (1/1) ... [2023-12-05 21:19:58,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:19:58,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:19:58,718 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 21:19:58,720 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 21:19:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:19:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-05 21:19:58,745 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-05 21:19:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-05 21:19:58,745 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-05 21:19:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:19:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:19:58,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:19:58,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:19:58,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:19:58,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-05 21:19:58,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:19:58,747 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 21:19:58,827 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:19:58,829 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:19:59,100 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:19:59,112 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:19:59,112 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-05 21:19:59,114 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:19:59 BoogieIcfgContainer [2023-12-05 21:19:59,114 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:19:59,116 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:19:59,116 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:19:59,118 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:19:59,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:19:58" (1/3) ... [2023-12-05 21:19:59,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512fe59e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:19:59, skipping insertion in model container [2023-12-05 21:19:59,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:58" (2/3) ... [2023-12-05 21:19:59,120 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512fe59e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:19:59, skipping insertion in model container [2023-12-05 21:19:59,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:19:59" (3/3) ... [2023-12-05 21:19:59,121 INFO L112 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2023-12-05 21:19:59,137 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:19:59,138 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-12-05 21:19:59,138 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:19:59,261 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-05 21:19:59,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 230 places, 237 transitions, 488 flow [2023-12-05 21:19:59,398 INFO L124 PetriNetUnfolderBase]: 14/235 cut-off events. [2023-12-05 21:19:59,398 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-05 21:19:59,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 235 events. 14/235 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 392 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 151. Up to 2 conditions per place. [2023-12-05 21:19:59,411 INFO L82 GeneralOperation]: Start removeDead. Operand has 230 places, 237 transitions, 488 flow [2023-12-05 21:19:59,433 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 213 transitions, 435 flow [2023-12-05 21:19:59,450 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:19:59,457 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;@4b6c1954, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:19:59,457 INFO L363 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-12-05 21:19:59,478 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:19:59,478 INFO L124 PetriNetUnfolderBase]: 1/56 cut-off events. [2023-12-05 21:19:59,478 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:19:59,479 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:19:59,479 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] [2023-12-05 21:19:59,480 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-12-05 21:19:59,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:19:59,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1731091310, now seen corresponding path program 1 times [2023-12-05 21:19:59,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:19:59,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247287415] [2023-12-05 21:19:59,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:19:59,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:19:59,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:19:59,922 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 21:19:59,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:19:59,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247287415] [2023-12-05 21:19:59,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247287415] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:19:59,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:19:59,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:19:59,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264548116] [2023-12-05 21:19:59,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:19:59,933 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:19:59,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:19:59,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:19:59,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:19:59,964 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 237 [2023-12-05 21:19:59,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 213 transitions, 435 flow. Second operand has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 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 21:19:59,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:19:59,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 237 [2023-12-05 21:19:59,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:20:00,084 INFO L124 PetriNetUnfolderBase]: 2/200 cut-off events. [2023-12-05 21:20:00,084 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-12-05 21:20:00,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 200 events. 2/200 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 261 event pairs, 0 based on Foata normal form. 23/208 useless extension candidates. Maximal degree in co-relation 145. Up to 13 conditions per place. [2023-12-05 21:20:00,091 INFO L140 encePairwiseOnDemand]: 223/237 looper letters, 16 selfloop transitions, 1 changer transitions 1/200 dead transitions. [2023-12-05 21:20:00,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 200 transitions, 443 flow [2023-12-05 21:20:00,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:20:00,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:20:00,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 630 transitions. [2023-12-05 21:20:00,105 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8860759493670886 [2023-12-05 21:20:00,106 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 630 transitions. [2023-12-05 21:20:00,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 630 transitions. [2023-12-05 21:20:00,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:20:00,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 630 transitions. [2023-12-05 21:20:00,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 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 21:20:00,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 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 21:20:00,119 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 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 21:20:00,122 INFO L308 CegarLoopForPetriNet]: 207 programPoint places, 0 predicate places. [2023-12-05 21:20:00,123 INFO L500 AbstractCegarLoop]: Abstraction has has 207 places, 200 transitions, 443 flow [2023-12-05 21:20:00,123 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 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 21:20:00,123 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:20:00,124 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] [2023-12-05 21:20:00,124 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:20:00,124 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-12-05 21:20:00,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:20:00,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1731091309, now seen corresponding path program 1 times [2023-12-05 21:20:00,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:20:00,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500206599] [2023-12-05 21:20:00,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:20:00,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:20:00,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:20:00,330 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 21:20:00,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:20:00,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500206599] [2023-12-05 21:20:00,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500206599] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:20:00,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:20:00,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:20:00,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10349520] [2023-12-05 21:20:00,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:20:00,333 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:20:00,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:20:00,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:20:00,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:20:00,335 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 237 [2023-12-05 21:20:00,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 200 transitions, 443 flow. Second operand has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 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 21:20:00,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:20:00,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 237 [2023-12-05 21:20:00,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:20:00,404 INFO L124 PetriNetUnfolderBase]: 2/198 cut-off events. [2023-12-05 21:20:00,404 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-12-05 21:20:00,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 198 events. 2/198 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 252 event pairs, 0 based on Foata normal form. 0/187 useless extension candidates. Maximal degree in co-relation 147. Up to 11 conditions per place. [2023-12-05 21:20:00,407 INFO L140 encePairwiseOnDemand]: 234/237 looper letters, 13 selfloop transitions, 1 changer transitions 1/198 dead transitions. [2023-12-05 21:20:00,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 198 transitions, 463 flow [2023-12-05 21:20:00,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:20:00,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:20:00,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 622 transitions. [2023-12-05 21:20:00,411 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8748241912798875 [2023-12-05 21:20:00,412 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 622 transitions. [2023-12-05 21:20:00,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 622 transitions. [2023-12-05 21:20:00,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:20:00,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 622 transitions. [2023-12-05 21:20:00,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 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 21:20:00,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 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 21:20:00,433 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 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 21:20:00,435 INFO L308 CegarLoopForPetriNet]: 207 programPoint places, 0 predicate places. [2023-12-05 21:20:00,436 INFO L500 AbstractCegarLoop]: Abstraction has has 207 places, 198 transitions, 463 flow [2023-12-05 21:20:00,436 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 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 21:20:00,436 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:20:00,437 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, 1] [2023-12-05 21:20:00,437 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 21:20:00,437 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-12-05 21:20:00,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:20:00,439 INFO L85 PathProgramCache]: Analyzing trace with hash -40879995, now seen corresponding path program 1 times [2023-12-05 21:20:00,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:20:00,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280973204] [2023-12-05 21:20:00,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:20:00,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:20:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:20:00,616 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 21:20:00,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:20:00,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280973204] [2023-12-05 21:20:00,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280973204] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:20:00,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:20:00,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:20:00,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063671301] [2023-12-05 21:20:00,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:20:00,618 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:20:00,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:20:00,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:20:00,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:20:00,620 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 237 [2023-12-05 21:20:00,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 198 transitions, 463 flow. Second operand has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 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 21:20:00,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:20:00,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 237 [2023-12-05 21:20:00,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:20:00,695 INFO L124 PetriNetUnfolderBase]: 2/196 cut-off events. [2023-12-05 21:20:00,697 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-12-05 21:20:00,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 196 events. 2/196 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 241 event pairs, 0 based on Foata normal form. 2/187 useless extension candidates. Maximal degree in co-relation 154. Up to 11 conditions per place. [2023-12-05 21:20:00,700 INFO L140 encePairwiseOnDemand]: 234/237 looper letters, 13 selfloop transitions, 1 changer transitions 1/196 dead transitions. [2023-12-05 21:20:00,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 196 transitions, 483 flow [2023-12-05 21:20:00,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:20:00,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:20:00,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 622 transitions. [2023-12-05 21:20:00,708 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8748241912798875 [2023-12-05 21:20:00,708 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 622 transitions. [2023-12-05 21:20:00,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 622 transitions. [2023-12-05 21:20:00,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:20:00,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 622 transitions. [2023-12-05 21:20:00,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 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 21:20:00,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 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 21:20:00,713 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 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 21:20:00,715 INFO L308 CegarLoopForPetriNet]: 207 programPoint places, 0 predicate places. [2023-12-05 21:20:00,715 INFO L500 AbstractCegarLoop]: Abstraction has has 207 places, 196 transitions, 483 flow [2023-12-05 21:20:00,715 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 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 21:20:00,716 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:20:00,716 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, 1] [2023-12-05 21:20:00,717 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 21:20:00,717 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-12-05 21:20:00,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:20:00,718 INFO L85 PathProgramCache]: Analyzing trace with hash -40879996, now seen corresponding path program 1 times [2023-12-05 21:20:00,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:20:00,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865385702] [2023-12-05 21:20:00,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:20:00,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:20:00,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:20:00,829 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 21:20:00,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:20:00,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865385702] [2023-12-05 21:20:00,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865385702] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:20:00,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:20:00,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:20:00,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928849267] [2023-12-05 21:20:00,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:20:00,830 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:20:00,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:20:00,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:20:00,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:20:00,832 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 237 [2023-12-05 21:20:00,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 196 transitions, 483 flow. Second operand has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 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 21:20:00,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:20:00,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 237 [2023-12-05 21:20:00,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:20:00,874 INFO L124 PetriNetUnfolderBase]: 2/194 cut-off events. [2023-12-05 21:20:00,875 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-12-05 21:20:00,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 194 events. 2/194 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 231 event pairs, 0 based on Foata normal form. 2/185 useless extension candidates. Maximal degree in co-relation 160. Up to 9 conditions per place. [2023-12-05 21:20:00,877 INFO L140 encePairwiseOnDemand]: 234/237 looper letters, 0 selfloop transitions, 0 changer transitions 194/194 dead transitions. [2023-12-05 21:20:00,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 194 transitions, 497 flow [2023-12-05 21:20:00,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:20:00,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:20:00,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 615 transitions. [2023-12-05 21:20:00,879 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8649789029535865 [2023-12-05 21:20:00,880 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 615 transitions. [2023-12-05 21:20:00,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 615 transitions. [2023-12-05 21:20:00,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:20:00,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 615 transitions. [2023-12-05 21:20:00,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 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 21:20:00,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 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 21:20:00,884 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 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 21:20:00,885 INFO L308 CegarLoopForPetriNet]: 207 programPoint places, 0 predicate places. [2023-12-05 21:20:00,887 INFO L500 AbstractCegarLoop]: Abstraction has has 207 places, 194 transitions, 497 flow [2023-12-05 21:20:00,887 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 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 21:20:00,898 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/fibonacci.wvr.c_BEv2_AllErrorsAtOnce [2023-12-05 21:20:00,924 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining) [2023-12-05 21:20:00,925 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2023-12-05 21:20:00,925 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2023-12-05 21:20:00,925 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2023-12-05 21:20:00,925 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2023-12-05 21:20:00,926 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 10 remaining) [2023-12-05 21:20:00,926 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining) [2023-12-05 21:20:00,926 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining) [2023-12-05 21:20:00,926 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 10 remaining) [2023-12-05 21:20:00,926 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2023-12-05 21:20:00,927 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 21:20:00,927 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-12-05 21:20:00,930 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-05 21:20:00,930 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-05 21:20:00,936 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:20:00 BasicIcfg [2023-12-05 21:20:00,936 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-05 21:20:00,937 INFO L158 Benchmark]: Toolchain (without parser) took 2513.58ms. Allocated memory was 181.4MB in the beginning and 235.9MB in the end (delta: 54.5MB). Free memory was 137.9MB in the beginning and 133.0MB in the end (delta: 4.9MB). Peak memory consumption was 60.4MB. Max. memory is 8.0GB. [2023-12-05 21:20:00,937 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 181.4MB. Free memory is still 139.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:20:00,938 INFO L158 Benchmark]: CACSL2BoogieTranslator took 190.92ms. Allocated memory is still 181.4MB. Free memory was 137.3MB in the beginning and 126.2MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-05 21:20:00,938 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.58ms. Allocated memory is still 181.4MB. Free memory was 126.2MB in the beginning and 124.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:20:00,939 INFO L158 Benchmark]: Boogie Preprocessor took 36.36ms. Allocated memory is still 181.4MB. Free memory was 124.1MB in the beginning and 122.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:20:00,939 INFO L158 Benchmark]: RCFGBuilder took 422.73ms. Allocated memory is still 181.4MB. Free memory was 122.2MB in the beginning and 102.1MB in the end (delta: 20.1MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-05 21:20:00,940 INFO L158 Benchmark]: TraceAbstraction took 1820.71ms. Allocated memory was 181.4MB in the beginning and 235.9MB in the end (delta: 54.5MB). Free memory was 101.3MB in the beginning and 133.0MB in the end (delta: -31.7MB). Peak memory consumption was 23.7MB. Max. memory is 8.0GB. [2023-12-05 21:20:00,942 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 181.4MB. Free memory is still 139.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 190.92ms. Allocated memory is still 181.4MB. Free memory was 137.3MB in the beginning and 126.2MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 37.58ms. Allocated memory is still 181.4MB. Free memory was 126.2MB in the beginning and 124.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.36ms. Allocated memory is still 181.4MB. Free memory was 124.1MB in the beginning and 122.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 422.73ms. Allocated memory is still 181.4MB. Free memory was 122.2MB in the beginning and 102.1MB in the end (delta: 20.1MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 1820.71ms. Allocated memory was 181.4MB in the beginning and 235.9MB in the end (delta: 54.5MB). Free memory was 101.3MB in the beginning and 133.0MB in the end (delta: -31.7MB). Peak memory consumption was 23.7MB. 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 352 locations, 10 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: 1.6s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32 mSDsluCounter, 20 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 54 IncrementalHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 20 mSDtfsCounter, 54 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=497occurred in iteration=4, InterpolantAutomatonStates: 12, 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, 0.7s InterpolantComputationTime, 228 NumberOfCodeBlocks, 228 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 224 ConstructedInterpolants, 0 QuantifiedInterpolants, 1196 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-05 21:20:00,971 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...