/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/goblint-regression/04-mutex_10-ptrmunge_nr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:11:55,660 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:11:55,747 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 21:11:55,783 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:11:55,783 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:11:55,784 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:11:55,785 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:11:55,785 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:11:55,785 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:11:55,789 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:11:55,790 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:11:55,790 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:11:55,790 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:11:55,791 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:11:55,792 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:11:55,792 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:11:55,792 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:11:55,792 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:11:55,792 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:11:55,793 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:11:55,793 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:11:55,794 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:11:55,794 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:11:55,794 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:11:55,794 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:11:55,794 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:11:55,795 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:11:55,795 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:11:55,795 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:11:55,795 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:11:55,796 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:11:55,796 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:11:55,796 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:11:55,797 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:11:56,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:11:56,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:11:56,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:11:56,058 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:11:56,059 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:11:56,061 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/04-mutex_10-ptrmunge_nr.i [2023-12-05 21:11:57,241 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:11:57,549 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:11:57,549 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/04-mutex_10-ptrmunge_nr.i [2023-12-05 21:11:57,569 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92cf774b2/0b22cf1e24c44831be4b469c9bf013cf/FLAGf458d5702 [2023-12-05 21:11:57,581 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92cf774b2/0b22cf1e24c44831be4b469c9bf013cf [2023-12-05 21:11:57,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:11:57,584 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:11:57,585 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:11:57,585 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:11:57,589 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:11:57,590 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:11:57" (1/1) ... [2023-12-05 21:11:57,591 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48680a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:11:57, skipping insertion in model container [2023-12-05 21:11:57,591 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:11:57" (1/1) ... [2023-12-05 21:11:57,634 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:11:58,010 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:11:58,026 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:11:58,075 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:11:58,136 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:11:58,137 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:11:58 WrapperNode [2023-12-05 21:11:58,137 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:11:58,138 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:11:58,138 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:11:58,138 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:11:58,145 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:11:58" (1/1) ... [2023-12-05 21:11:58,176 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:11:58" (1/1) ... [2023-12-05 21:11:58,205 INFO L138 Inliner]: procedures = 264, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 67 [2023-12-05 21:11:58,206 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:11:58,206 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:11:58,206 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:11:58,207 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:11:58,215 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:11:58" (1/1) ... [2023-12-05 21:11:58,215 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:11:58" (1/1) ... [2023-12-05 21:11:58,227 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:11:58" (1/1) ... [2023-12-05 21:11:58,227 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:11:58" (1/1) ... [2023-12-05 21:11:58,239 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:11:58" (1/1) ... [2023-12-05 21:11:58,240 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:11:58" (1/1) ... [2023-12-05 21:11:58,241 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:11:58" (1/1) ... [2023-12-05 21:11:58,242 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:11:58" (1/1) ... [2023-12-05 21:11:58,244 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:11:58,245 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:11:58,245 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:11:58,245 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:11:58,246 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:11:58" (1/1) ... [2023-12-05 21:11:58,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:11:58,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:11:58,278 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 21:11:58,300 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 21:11:58,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:11:58,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:11:58,316 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-12-05 21:11:58,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-05 21:11:58,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:11:58,317 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-12-05 21:11:58,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:11:58,318 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-12-05 21:11:58,318 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-12-05 21:11:58,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:11:58,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:11:58,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:11:58,319 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 21:11:58,461 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:11:58,463 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:11:58,670 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:11:58,688 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:11:58,688 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-05 21:11:58,690 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:11:58 BoogieIcfgContainer [2023-12-05 21:11:58,690 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:11:58,692 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:11:58,692 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:11:58,695 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:11:58,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:11:57" (1/3) ... [2023-12-05 21:11:58,696 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@663ce2a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:11:58, skipping insertion in model container [2023-12-05 21:11:58,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:11:58" (2/3) ... [2023-12-05 21:11:58,699 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@663ce2a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:11:58, skipping insertion in model container [2023-12-05 21:11:58,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:11:58" (3/3) ... [2023-12-05 21:11:58,700 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_10-ptrmunge_nr.i [2023-12-05 21:11:58,716 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:11:58,717 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-12-05 21:11:58,717 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:11:58,774 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-12-05 21:11:58,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 82 transitions, 171 flow [2023-12-05 21:11:58,849 INFO L124 PetriNetUnfolderBase]: 0/81 cut-off events. [2023-12-05 21:11:58,849 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-12-05 21:11:58,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 81 events. 0/81 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 86 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-12-05 21:11:58,852 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 82 transitions, 171 flow [2023-12-05 21:11:58,856 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 73 transitions, 149 flow [2023-12-05 21:11:58,865 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:11:58,871 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;@2cda54d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:11:58,871 INFO L363 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-12-05 21:11:58,880 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:11:58,880 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2023-12-05 21:11:58,881 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:11:58,881 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:11:58,881 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] [2023-12-05 21:11:58,882 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-12-05 21:11:58,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:11:58,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1583270472, now seen corresponding path program 1 times [2023-12-05 21:11:58,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:11:58,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484096996] [2023-12-05 21:11:58,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:11:58,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:11:59,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:11:59,203 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 21:11:59,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:11:59,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484096996] [2023-12-05 21:11:59,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484096996] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:11:59,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:11:59,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:11:59,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205719812] [2023-12-05 21:11:59,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:11:59,214 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:11:59,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:11:59,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:11:59,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:11:59,244 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 82 [2023-12-05 21:11:59,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 73 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 21:11:59,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:11:59,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 82 [2023-12-05 21:11:59,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:11:59,406 INFO L124 PetriNetUnfolderBase]: 48/218 cut-off events. [2023-12-05 21:11:59,406 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:11:59,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343 conditions, 218 events. 48/218 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 939 event pairs, 48 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 298. Up to 114 conditions per place. [2023-12-05 21:11:59,415 INFO L140 encePairwiseOnDemand]: 79/82 looper letters, 23 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2023-12-05 21:11:59,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 71 transitions, 193 flow [2023-12-05 21:11:59,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:11:59,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:11:59,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 182 transitions. [2023-12-05 21:11:59,428 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7398373983739838 [2023-12-05 21:11:59,429 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 182 transitions. [2023-12-05 21:11:59,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 182 transitions. [2023-12-05 21:11:59,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:11:59,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 182 transitions. [2023-12-05 21:11:59,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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 21:11:59,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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 21:11:59,444 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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 21:11:59,448 INFO L308 CegarLoopForPetriNet]: 77 programPoint places, 0 predicate places. [2023-12-05 21:11:59,448 INFO L500 AbstractCegarLoop]: Abstraction has has 77 places, 71 transitions, 193 flow [2023-12-05 21:11:59,448 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 21:11:59,448 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:11:59,449 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] [2023-12-05 21:11:59,449 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:11:59,449 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-12-05 21:11:59,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:11:59,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1583270473, now seen corresponding path program 1 times [2023-12-05 21:11:59,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:11:59,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526700633] [2023-12-05 21:11:59,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:11:59,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:11:59,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:11:59,688 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 21:11:59,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:11:59,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526700633] [2023-12-05 21:11:59,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526700633] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:11:59,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:11:59,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:11:59,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962850636] [2023-12-05 21:11:59,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:11:59,693 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:11:59,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:11:59,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:11:59,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:11:59,696 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 82 [2023-12-05 21:11:59,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 193 flow. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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 21:11:59,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:11:59,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 82 [2023-12-05 21:11:59,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:11:59,800 INFO L124 PetriNetUnfolderBase]: 64/261 cut-off events. [2023-12-05 21:11:59,800 INFO L125 PetriNetUnfolderBase]: For 60/66 co-relation queries the response was YES. [2023-12-05 21:11:59,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 261 events. 64/261 cut-off events. For 60/66 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1263 event pairs, 64 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 466. Up to 120 conditions per place. [2023-12-05 21:11:59,803 INFO L140 encePairwiseOnDemand]: 79/82 looper letters, 20 selfloop transitions, 1 changer transitions 0/69 dead transitions. [2023-12-05 21:11:59,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 69 transitions, 227 flow [2023-12-05 21:11:59,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:11:59,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:11:59,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 182 transitions. [2023-12-05 21:11:59,809 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7398373983739838 [2023-12-05 21:11:59,809 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 182 transitions. [2023-12-05 21:11:59,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 182 transitions. [2023-12-05 21:11:59,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:11:59,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 182 transitions. [2023-12-05 21:11:59,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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 21:11:59,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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 21:11:59,812 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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 21:11:59,813 INFO L308 CegarLoopForPetriNet]: 77 programPoint places, 0 predicate places. [2023-12-05 21:11:59,813 INFO L500 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 227 flow [2023-12-05 21:11:59,814 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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 21:11:59,814 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:11:59,814 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] [2023-12-05 21:11:59,814 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 21:11:59,814 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-12-05 21:11:59,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:11:59,816 INFO L85 PathProgramCache]: Analyzing trace with hash 544419434, now seen corresponding path program 1 times [2023-12-05 21:11:59,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:11:59,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936250492] [2023-12-05 21:11:59,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:11:59,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:11:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:00,217 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 21:12:00,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:12:00,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936250492] [2023-12-05 21:12:00,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936250492] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:12:00,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:12:00,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-05 21:12:00,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270300447] [2023-12-05 21:12:00,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:12:00,222 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-05 21:12:00,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:12:00,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-05 21:12:00,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-05 21:12:00,225 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 82 [2023-12-05 21:12:00,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 227 flow. Second operand has 9 states, 9 states have (on average 44.77777777777778) internal successors, (403), 9 states have internal predecessors, (403), 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 21:12:00,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:12:00,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 82 [2023-12-05 21:12:00,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:12:00,435 INFO L124 PetriNetUnfolderBase]: 89/311 cut-off events. [2023-12-05 21:12:00,436 INFO L125 PetriNetUnfolderBase]: For 224/243 co-relation queries the response was YES. [2023-12-05 21:12:00,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 794 conditions, 311 events. 89/311 cut-off events. For 224/243 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1485 event pairs, 54 based on Foata normal form. 18/323 useless extension candidates. Maximal degree in co-relation 730. Up to 141 conditions per place. [2023-12-05 21:12:00,443 INFO L140 encePairwiseOnDemand]: 72/82 looper letters, 35 selfloop transitions, 8 changer transitions 0/81 dead transitions. [2023-12-05 21:12:00,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 81 transitions, 381 flow [2023-12-05 21:12:00,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-05 21:12:00,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-05 21:12:00,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 389 transitions. [2023-12-05 21:12:00,450 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5929878048780488 [2023-12-05 21:12:00,450 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 389 transitions. [2023-12-05 21:12:00,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 389 transitions. [2023-12-05 21:12:00,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:12:00,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 389 transitions. [2023-12-05 21:12:00,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 48.625) internal successors, (389), 8 states have internal predecessors, (389), 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 21:12:00,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 82.0) internal successors, (738), 9 states have internal predecessors, (738), 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 21:12:00,456 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 82.0) internal successors, (738), 9 states have internal predecessors, (738), 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 21:12:00,457 INFO L308 CegarLoopForPetriNet]: 77 programPoint places, 5 predicate places. [2023-12-05 21:12:00,457 INFO L500 AbstractCegarLoop]: Abstraction has has 82 places, 81 transitions, 381 flow [2023-12-05 21:12:00,458 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 44.77777777777778) internal successors, (403), 9 states have internal predecessors, (403), 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 21:12:00,458 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:12:00,458 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] [2023-12-05 21:12:00,458 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 21:12:00,458 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-12-05 21:12:00,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:12:00,460 INFO L85 PathProgramCache]: Analyzing trace with hash 544419433, now seen corresponding path program 1 times [2023-12-05 21:12:00,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:12:00,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922321671] [2023-12-05 21:12:00,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:00,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:12:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:00,730 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 21:12:00,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:12:00,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922321671] [2023-12-05 21:12:00,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922321671] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:12:00,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:12:00,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-05 21:12:00,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072873573] [2023-12-05 21:12:00,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:12:00,735 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-05 21:12:00,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:12:00,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-05 21:12:00,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-05 21:12:00,738 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 82 [2023-12-05 21:12:00,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 81 transitions, 381 flow. Second operand has 9 states, 9 states have (on average 43.888888888888886) internal successors, (395), 9 states have internal predecessors, (395), 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 21:12:00,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:12:00,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 82 [2023-12-05 21:12:00,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:12:00,887 INFO L124 PetriNetUnfolderBase]: 81/279 cut-off events. [2023-12-05 21:12:00,888 INFO L125 PetriNetUnfolderBase]: For 370/416 co-relation queries the response was YES. [2023-12-05 21:12:00,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 867 conditions, 279 events. 81/279 cut-off events. For 370/416 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1193 event pairs, 37 based on Foata normal form. 28/301 useless extension candidates. Maximal degree in co-relation 790. Up to 113 conditions per place. [2023-12-05 21:12:00,890 INFO L140 encePairwiseOnDemand]: 72/82 looper letters, 25 selfloop transitions, 8 changer transitions 13/83 dead transitions. [2023-12-05 21:12:00,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 83 transitions, 469 flow [2023-12-05 21:12:00,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-05 21:12:00,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-05 21:12:00,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 380 transitions. [2023-12-05 21:12:00,892 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5792682926829268 [2023-12-05 21:12:00,892 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 380 transitions. [2023-12-05 21:12:00,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 380 transitions. [2023-12-05 21:12:00,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:12:00,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 380 transitions. [2023-12-05 21:12:00,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 47.5) internal successors, (380), 8 states have internal predecessors, (380), 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 21:12:00,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 82.0) internal successors, (738), 9 states have internal predecessors, (738), 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 21:12:00,896 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 82.0) internal successors, (738), 9 states have internal predecessors, (738), 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 21:12:00,898 INFO L308 CegarLoopForPetriNet]: 77 programPoint places, 10 predicate places. [2023-12-05 21:12:00,898 INFO L500 AbstractCegarLoop]: Abstraction has has 87 places, 83 transitions, 469 flow [2023-12-05 21:12:00,899 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 43.888888888888886) internal successors, (395), 9 states have internal predecessors, (395), 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 21:12:00,899 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:12:00,899 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] [2023-12-05 21:12:00,900 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 21:12:00,901 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-12-05 21:12:00,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:12:00,902 INFO L85 PathProgramCache]: Analyzing trace with hash -255746170, now seen corresponding path program 1 times [2023-12-05 21:12:00,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:12:00,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811122421] [2023-12-05 21:12:00,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:00,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:12:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:01,099 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 21:12:01,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:12:01,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811122421] [2023-12-05 21:12:01,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811122421] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:12:01,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:12:01,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-05 21:12:01,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089327565] [2023-12-05 21:12:01,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:12:01,100 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-05 21:12:01,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:12:01,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-05 21:12:01,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-05 21:12:01,103 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 82 [2023-12-05 21:12:01,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 83 transitions, 469 flow. Second operand has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 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 21:12:01,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:12:01,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 82 [2023-12-05 21:12:01,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:12:01,212 INFO L124 PetriNetUnfolderBase]: 85/273 cut-off events. [2023-12-05 21:12:01,212 INFO L125 PetriNetUnfolderBase]: For 674/680 co-relation queries the response was YES. [2023-12-05 21:12:01,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1016 conditions, 273 events. 85/273 cut-off events. For 674/680 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1053 event pairs, 3 based on Foata normal form. 22/292 useless extension candidates. Maximal degree in co-relation 927. Up to 125 conditions per place. [2023-12-05 21:12:01,214 INFO L140 encePairwiseOnDemand]: 74/82 looper letters, 34 selfloop transitions, 4 changer transitions 13/85 dead transitions. [2023-12-05 21:12:01,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 85 transitions, 611 flow [2023-12-05 21:12:01,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-05 21:12:01,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-05 21:12:01,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 295 transitions. [2023-12-05 21:12:01,216 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5995934959349594 [2023-12-05 21:12:01,216 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 295 transitions. [2023-12-05 21:12:01,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 295 transitions. [2023-12-05 21:12:01,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:12:01,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 295 transitions. [2023-12-05 21:12:01,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 49.166666666666664) internal successors, (295), 6 states have internal predecessors, (295), 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 21:12:01,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 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 21:12:01,218 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 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 21:12:01,219 INFO L308 CegarLoopForPetriNet]: 77 programPoint places, 13 predicate places. [2023-12-05 21:12:01,219 INFO L500 AbstractCegarLoop]: Abstraction has has 90 places, 85 transitions, 611 flow [2023-12-05 21:12:01,220 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 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 21:12:01,220 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:12:01,220 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] [2023-12-05 21:12:01,220 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-05 21:12:01,220 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-12-05 21:12:01,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:12:01,221 INFO L85 PathProgramCache]: Analyzing trace with hash -255746169, now seen corresponding path program 1 times [2023-12-05 21:12:01,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:12:01,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53625682] [2023-12-05 21:12:01,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:01,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:12:01,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:01,434 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 21:12:01,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:12:01,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53625682] [2023-12-05 21:12:01,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53625682] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:12:01,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:12:01,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-05 21:12:01,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800366375] [2023-12-05 21:12:01,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:12:01,436 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-05 21:12:01,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:12:01,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-05 21:12:01,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-05 21:12:01,438 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 82 [2023-12-05 21:12:01,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 85 transitions, 611 flow. Second operand has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 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 21:12:01,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:12:01,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 82 [2023-12-05 21:12:01,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:12:01,558 INFO L124 PetriNetUnfolderBase]: 67/245 cut-off events. [2023-12-05 21:12:01,558 INFO L125 PetriNetUnfolderBase]: For 831/853 co-relation queries the response was YES. [2023-12-05 21:12:01,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1009 conditions, 245 events. 67/245 cut-off events. For 831/853 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 907 event pairs, 9 based on Foata normal form. 32/273 useless extension candidates. Maximal degree in co-relation 910. Up to 97 conditions per place. [2023-12-05 21:12:01,559 INFO L140 encePairwiseOnDemand]: 74/82 looper letters, 0 selfloop transitions, 0 changer transitions 79/79 dead transitions. [2023-12-05 21:12:01,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 79 transitions, 645 flow [2023-12-05 21:12:01,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-05 21:12:01,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-05 21:12:01,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 333 transitions. [2023-12-05 21:12:01,562 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.676829268292683 [2023-12-05 21:12:01,562 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 333 transitions. [2023-12-05 21:12:01,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 333 transitions. [2023-12-05 21:12:01,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:12:01,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 333 transitions. [2023-12-05 21:12:01,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 55.5) internal successors, (333), 6 states have internal predecessors, (333), 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 21:12:01,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 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 21:12:01,565 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 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 21:12:01,567 INFO L308 CegarLoopForPetriNet]: 77 programPoint places, 16 predicate places. [2023-12-05 21:12:01,567 INFO L500 AbstractCegarLoop]: Abstraction has has 93 places, 79 transitions, 645 flow [2023-12-05 21:12:01,567 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 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 21:12:01,575 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/04-mutex_10-ptrmunge_nr.i_BEv2_AllErrorsAtOnce [2023-12-05 21:12:01,609 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2023-12-05 21:12:01,610 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2023-12-05 21:12:01,610 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2023-12-05 21:12:01,610 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2023-12-05 21:12:01,610 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2023-12-05 21:12:01,611 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2023-12-05 21:12:01,611 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2023-12-05 21:12:01,611 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2023-12-05 21:12:01,611 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2023-12-05 21:12:01,611 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2023-12-05 21:12:01,611 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2023-12-05 21:12:01,611 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2023-12-05 21:12:01,611 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 17 remaining) [2023-12-05 21:12:01,612 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 17 remaining) [2023-12-05 21:12:01,612 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 17 remaining) [2023-12-05 21:12:01,615 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 17 remaining) [2023-12-05 21:12:01,615 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 17 remaining) [2023-12-05 21:12:01,615 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-05 21:12:01,616 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-05 21:12:01,621 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-05 21:12:01,621 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-05 21:12:01,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:12:01 BasicIcfg [2023-12-05 21:12:01,635 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-05 21:12:01,636 INFO L158 Benchmark]: Toolchain (without parser) took 4051.88ms. Allocated memory was 188.7MB in the beginning and 290.5MB in the end (delta: 101.7MB). Free memory was 138.3MB in the beginning and 238.0MB in the end (delta: -99.7MB). Peak memory consumption was 150.1MB. Max. memory is 8.0GB. [2023-12-05 21:12:01,636 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 188.7MB. Free memory is still 137.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:12:01,636 INFO L158 Benchmark]: CACSL2BoogieTranslator took 552.21ms. Allocated memory is still 188.7MB. Free memory was 138.3MB in the beginning and 110.7MB in the end (delta: 27.6MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2023-12-05 21:12:01,636 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.81ms. Allocated memory is still 188.7MB. Free memory was 110.7MB in the beginning and 108.2MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-05 21:12:01,637 INFO L158 Benchmark]: Boogie Preprocessor took 37.73ms. Allocated memory is still 188.7MB. Free memory was 108.2MB in the beginning and 106.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-05 21:12:01,637 INFO L158 Benchmark]: RCFGBuilder took 445.29ms. Allocated memory was 188.7MB in the beginning and 290.5MB in the end (delta: 101.7MB). Free memory was 106.8MB in the beginning and 252.6MB in the end (delta: -145.8MB). Peak memory consumption was 15.8MB. Max. memory is 8.0GB. [2023-12-05 21:12:01,637 INFO L158 Benchmark]: TraceAbstraction took 2943.38ms. Allocated memory is still 290.5MB. Free memory was 252.1MB in the beginning and 238.0MB in the end (delta: 14.2MB). Peak memory consumption was 161.5MB. Max. memory is 8.0GB. [2023-12-05 21:12:01,640 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 188.7MB. Free memory is still 137.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 552.21ms. Allocated memory is still 188.7MB. Free memory was 138.3MB in the beginning and 110.7MB in the end (delta: 27.6MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 67.81ms. Allocated memory is still 188.7MB. Free memory was 110.7MB in the beginning and 108.2MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.73ms. Allocated memory is still 188.7MB. Free memory was 108.2MB in the beginning and 106.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 445.29ms. Allocated memory was 188.7MB in the beginning and 290.5MB in the end (delta: 101.7MB). Free memory was 106.8MB in the beginning and 252.6MB in the end (delta: -145.8MB). Peak memory consumption was 15.8MB. Max. memory is 8.0GB. * TraceAbstraction took 2943.38ms. Allocated memory is still 290.5MB. Free memory was 252.1MB in the beginning and 238.0MB in the end (delta: 14.2MB). Peak memory consumption was 161.5MB. 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 3 procedures, 105 locations, 17 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: 2.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 295 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 295 mSDsluCounter, 69 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 27 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 348 IncrementalHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 42 mSDtfsCounter, 348 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=645occurred in iteration=6, InterpolantAutomatonStates: 34, 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, 1.4s InterpolantComputationTime, 206 NumberOfCodeBlocks, 206 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 1551 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 21:12:01,660 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...