/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/test-easy6.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:21:19,794 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:21:19,843 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 21:21:19,865 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:21:19,866 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:21:19,866 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:21:19,867 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:21:19,867 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:21:19,867 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:21:19,868 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:21:19,868 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:21:19,868 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:21:19,869 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:21:19,869 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:21:19,870 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:21:19,870 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:21:19,870 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:21:19,871 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:21:19,871 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:21:19,871 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:21:19,871 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:21:19,872 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:21:19,872 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:21:19,872 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:21:19,873 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:21:19,873 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:21:19,873 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:21:19,874 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:21:19,874 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:21:19,874 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:21:19,874 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:21:19,875 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:21:19,875 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:21:19,875 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:21:20,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:21:20,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:21:20,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:21:20,159 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:21:20,159 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:21:20,160 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy6.wvr.c [2023-12-05 21:21:21,278 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:21:21,468 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:21:21,469 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy6.wvr.c [2023-12-05 21:21:21,477 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7db7f890/7a31e1c9824e4a27b8b15e30c75e83ee/FLAGfe8ced279 [2023-12-05 21:21:21,494 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7db7f890/7a31e1c9824e4a27b8b15e30c75e83ee [2023-12-05 21:21:21,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:21:21,500 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:21:21,502 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:21:21,502 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:21:21,506 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:21:21,506 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:21:21" (1/1) ... [2023-12-05 21:21:21,510 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46b736d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:21, skipping insertion in model container [2023-12-05 21:21:21,510 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:21:21" (1/1) ... [2023-12-05 21:21:21,536 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:21:21,699 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:21:21,708 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:21:21,739 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:21:21,745 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:21:21,746 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:21:21,751 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:21:21,751 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:21 WrapperNode [2023-12-05 21:21:21,751 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:21:21,752 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:21:21,752 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:21:21,752 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:21:21,757 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:21" (1/1) ... [2023-12-05 21:21:21,762 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:21" (1/1) ... [2023-12-05 21:21:21,778 INFO L138 Inliner]: procedures = 21, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 126 [2023-12-05 21:21:21,778 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:21:21,779 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:21:21,779 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:21:21,779 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:21:21,787 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:21" (1/1) ... [2023-12-05 21:21:21,787 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:21" (1/1) ... [2023-12-05 21:21:21,789 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:21" (1/1) ... [2023-12-05 21:21:21,790 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:21" (1/1) ... [2023-12-05 21:21:21,798 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:21" (1/1) ... [2023-12-05 21:21:21,800 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:21" (1/1) ... [2023-12-05 21:21:21,801 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:21" (1/1) ... [2023-12-05 21:21:21,802 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:21" (1/1) ... [2023-12-05 21:21:21,804 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:21:21,805 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:21:21,805 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:21:21,805 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:21:21,806 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:21" (1/1) ... [2023-12-05 21:21:21,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:21:21,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:21:21,837 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 21:21:21,857 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 21:21:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:21:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-05 21:21:21,883 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-05 21:21:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-05 21:21:21,884 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-05 21:21:21,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:21:21,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:21:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:21:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-05 21:21:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-05 21:21:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:21:21,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:21:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-05 21:21:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:21:21,887 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 21:21:22,003 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:21:22,013 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:21:22,251 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:21:22,311 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:21:22,311 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-05 21:21:22,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:21:22 BoogieIcfgContainer [2023-12-05 21:21:22,313 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:21:22,314 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:21:22,314 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:21:22,317 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:21:22,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:21:21" (1/3) ... [2023-12-05 21:21:22,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@244cc2c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:21:22, skipping insertion in model container [2023-12-05 21:21:22,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:21" (2/3) ... [2023-12-05 21:21:22,319 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@244cc2c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:21:22, skipping insertion in model container [2023-12-05 21:21:22,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:21:22" (3/3) ... [2023-12-05 21:21:22,320 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2023-12-05 21:21:22,333 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:21:22,333 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-12-05 21:21:22,333 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:21:22,378 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-05 21:21:22,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 91 transitions, 196 flow [2023-12-05 21:21:22,469 INFO L124 PetriNetUnfolderBase]: 1/89 cut-off events. [2023-12-05 21:21:22,469 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-05 21:21:22,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 89 events. 1/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2023-12-05 21:21:22,484 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 91 transitions, 196 flow [2023-12-05 21:21:22,488 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 66 transitions, 141 flow [2023-12-05 21:21:22,497 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:21:22,503 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;@7d5906d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:21:22,503 INFO L363 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-12-05 21:21:22,509 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:21:22,510 INFO L124 PetriNetUnfolderBase]: 0/22 cut-off events. [2023-12-05 21:21:22,510 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:21:22,510 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:21:22,511 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] [2023-12-05 21:21:22,511 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 21:21:22,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:21:22,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1454907637, now seen corresponding path program 1 times [2023-12-05 21:21:22,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:21:22,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918486594] [2023-12-05 21:21:22,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:21:22,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:21:22,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:21:22,820 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 21:21:22,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:21:22,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918486594] [2023-12-05 21:21:22,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918486594] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:21:22,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:21:22,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:21:22,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26230849] [2023-12-05 21:21:22,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:21:22,835 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:21:22,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:21:22,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:21:22,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:21:22,873 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 91 [2023-12-05 21:21:22,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 66 transitions, 141 flow. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 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 21:21:22,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:21:22,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 91 [2023-12-05 21:21:22,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:21:22,999 INFO L124 PetriNetUnfolderBase]: 38/221 cut-off events. [2023-12-05 21:21:23,000 INFO L125 PetriNetUnfolderBase]: For 14/18 co-relation queries the response was YES. [2023-12-05 21:21:23,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 221 events. 38/221 cut-off events. For 14/18 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 944 event pairs, 38 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 248. Up to 84 conditions per place. [2023-12-05 21:21:23,005 INFO L140 encePairwiseOnDemand]: 88/91 looper letters, 19 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2023-12-05 21:21:23,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 64 transitions, 177 flow [2023-12-05 21:21:23,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:21:23,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:21:23,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 205 transitions. [2023-12-05 21:21:23,021 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7509157509157509 [2023-12-05 21:21:23,022 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 205 transitions. [2023-12-05 21:21:23,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 205 transitions. [2023-12-05 21:21:23,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:21:23,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 205 transitions. [2023-12-05 21:21:23,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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 21:21:23,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 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 21:21:23,040 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 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 21:21:23,044 INFO L308 CegarLoopForPetriNet]: 73 programPoint places, 0 predicate places. [2023-12-05 21:21:23,045 INFO L500 AbstractCegarLoop]: Abstraction has has 73 places, 64 transitions, 177 flow [2023-12-05 21:21:23,045 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 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 21:21:23,045 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:21:23,045 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] [2023-12-05 21:21:23,046 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:21:23,046 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 21:21:23,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:21:23,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1454907636, now seen corresponding path program 1 times [2023-12-05 21:21:23,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:21:23,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164747807] [2023-12-05 21:21:23,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:21:23,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:21:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:21:23,226 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 21:21:23,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:21:23,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164747807] [2023-12-05 21:21:23,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164747807] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:21:23,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:21:23,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-05 21:21:23,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820429274] [2023-12-05 21:21:23,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:21:23,229 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-05 21:21:23,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:21:23,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-05 21:21:23,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-05 21:21:23,230 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 91 [2023-12-05 21:21:23,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 64 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 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 21:21:23,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:21:23,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 91 [2023-12-05 21:21:23,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:21:23,328 INFO L124 PetriNetUnfolderBase]: 30/196 cut-off events. [2023-12-05 21:21:23,328 INFO L125 PetriNetUnfolderBase]: For 49/89 co-relation queries the response was YES. [2023-12-05 21:21:23,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 196 events. 30/196 cut-off events. For 49/89 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 749 event pairs, 30 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 250. Up to 72 conditions per place. [2023-12-05 21:21:23,331 INFO L140 encePairwiseOnDemand]: 88/91 looper letters, 19 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2023-12-05 21:21:23,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 62 transitions, 209 flow [2023-12-05 21:21:23,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:21:23,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:21:23,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 199 transitions. [2023-12-05 21:21:23,333 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7289377289377289 [2023-12-05 21:21:23,333 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 199 transitions. [2023-12-05 21:21:23,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 199 transitions. [2023-12-05 21:21:23,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:21:23,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 199 transitions. [2023-12-05 21:21:23,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 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 21:21:23,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 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 21:21:23,335 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 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 21:21:23,336 INFO L308 CegarLoopForPetriNet]: 73 programPoint places, 0 predicate places. [2023-12-05 21:21:23,336 INFO L500 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 209 flow [2023-12-05 21:21:23,337 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 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 21:21:23,337 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:21:23,337 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 21:21:23,337 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 21:21:23,337 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 21:21:23,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:21:23,338 INFO L85 PathProgramCache]: Analyzing trace with hash -445873968, now seen corresponding path program 1 times [2023-12-05 21:21:23,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:21:23,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451848962] [2023-12-05 21:21:23,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:21:23,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:21:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:21:23,427 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 21:21:23,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:21:23,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451848962] [2023-12-05 21:21:23,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451848962] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:21:23,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:21:23,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:21:23,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670633041] [2023-12-05 21:21:23,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:21:23,432 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:21:23,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:21:23,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:21:23,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:21:23,437 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 91 [2023-12-05 21:21:23,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 209 flow. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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 21:21:23,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:21:23,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 91 [2023-12-05 21:21:23,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:21:23,502 INFO L124 PetriNetUnfolderBase]: 26/176 cut-off events. [2023-12-05 21:21:23,503 INFO L125 PetriNetUnfolderBase]: For 107/183 co-relation queries the response was YES. [2023-12-05 21:21:23,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 176 events. 26/176 cut-off events. For 107/183 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 652 event pairs, 26 based on Foata normal form. 5/169 useless extension candidates. Maximal degree in co-relation 281. Up to 62 conditions per place. [2023-12-05 21:21:23,506 INFO L140 encePairwiseOnDemand]: 88/91 looper letters, 16 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2023-12-05 21:21:23,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 60 transitions, 235 flow [2023-12-05 21:21:23,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:21:23,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:21:23,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 208 transitions. [2023-12-05 21:21:23,509 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2023-12-05 21:21:23,509 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 208 transitions. [2023-12-05 21:21:23,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 208 transitions. [2023-12-05 21:21:23,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:21:23,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 208 transitions. [2023-12-05 21:21:23,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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 21:21:23,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 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 21:21:23,512 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 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 21:21:23,513 INFO L308 CegarLoopForPetriNet]: 73 programPoint places, 0 predicate places. [2023-12-05 21:21:23,513 INFO L500 AbstractCegarLoop]: Abstraction has has 73 places, 60 transitions, 235 flow [2023-12-05 21:21:23,513 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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 21:21:23,513 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:21:23,513 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 21:21:23,513 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 21:21:23,514 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 21:21:23,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:21:23,514 INFO L85 PathProgramCache]: Analyzing trace with hash -445873969, now seen corresponding path program 1 times [2023-12-05 21:21:23,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:21:23,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439356976] [2023-12-05 21:21:23,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:21:23,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:21:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:21:23,571 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 21:21:23,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:21:23,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439356976] [2023-12-05 21:21:23,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439356976] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:21:23,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:21:23,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:21:23,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542725132] [2023-12-05 21:21:23,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:21:23,573 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:21:23,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:21:23,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:21:23,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:21:23,575 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 91 [2023-12-05 21:21:23,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 60 transitions, 235 flow. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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 21:21:23,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:21:23,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 91 [2023-12-05 21:21:23,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:21:23,619 INFO L124 PetriNetUnfolderBase]: 22/156 cut-off events. [2023-12-05 21:21:23,619 INFO L125 PetriNetUnfolderBase]: For 180/278 co-relation queries the response was YES. [2023-12-05 21:21:23,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 156 events. 22/156 cut-off events. For 180/278 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 531 event pairs, 22 based on Foata normal form. 2/151 useless extension candidates. Maximal degree in co-relation 299. Up to 52 conditions per place. [2023-12-05 21:21:23,620 INFO L140 encePairwiseOnDemand]: 88/91 looper letters, 0 selfloop transitions, 0 changer transitions 58/58 dead transitions. [2023-12-05 21:21:23,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 58 transitions, 251 flow [2023-12-05 21:21:23,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:21:23,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:21:23,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 201 transitions. [2023-12-05 21:21:23,623 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7362637362637363 [2023-12-05 21:21:23,623 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 201 transitions. [2023-12-05 21:21:23,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 201 transitions. [2023-12-05 21:21:23,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:21:23,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 201 transitions. [2023-12-05 21:21:23,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 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 21:21:23,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 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 21:21:23,626 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 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 21:21:23,626 INFO L308 CegarLoopForPetriNet]: 73 programPoint places, 0 predicate places. [2023-12-05 21:21:23,627 INFO L500 AbstractCegarLoop]: Abstraction has has 73 places, 58 transitions, 251 flow [2023-12-05 21:21:23,627 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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 21:21:23,638 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/test-easy6.wvr.c_BEv2_AllErrorsAtOnce [2023-12-05 21:21:23,669 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining) [2023-12-05 21:21:23,670 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2023-12-05 21:21:23,670 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2023-12-05 21:21:23,670 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2023-12-05 21:21:23,671 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2023-12-05 21:21:23,671 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 10 remaining) [2023-12-05 21:21:23,671 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining) [2023-12-05 21:21:23,671 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining) [2023-12-05 21:21:23,671 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 10 remaining) [2023-12-05 21:21:23,672 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2023-12-05 21:21:23,672 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 21:21:23,672 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-12-05 21:21:23,677 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-05 21:21:23,677 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-05 21:21:23,688 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:21:23 BasicIcfg [2023-12-05 21:21:23,689 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-05 21:21:23,690 INFO L158 Benchmark]: Toolchain (without parser) took 2189.13ms. Allocated memory is still 245.4MB. Free memory was 203.4MB in the beginning and 110.3MB in the end (delta: 93.1MB). Peak memory consumption was 94.3MB. Max. memory is 8.0GB. [2023-12-05 21:21:23,691 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 245.4MB. Free memory is still 201.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:21:23,691 INFO L158 Benchmark]: CACSL2BoogieTranslator took 249.68ms. Allocated memory is still 245.4MB. Free memory was 203.4MB in the beginning and 192.1MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-05 21:21:23,694 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.63ms. Allocated memory is still 245.4MB. Free memory was 192.1MB in the beginning and 190.5MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-05 21:21:23,696 INFO L158 Benchmark]: Boogie Preprocessor took 25.21ms. Allocated memory is still 245.4MB. Free memory was 190.5MB in the beginning and 189.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:21:23,700 INFO L158 Benchmark]: RCFGBuilder took 507.81ms. Allocated memory is still 245.4MB. Free memory was 188.7MB in the beginning and 171.3MB in the end (delta: 17.5MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-05 21:21:23,700 INFO L158 Benchmark]: TraceAbstraction took 1374.32ms. Allocated memory is still 245.4MB. Free memory was 170.5MB in the beginning and 110.3MB in the end (delta: 60.2MB). Peak memory consumption was 61.8MB. Max. memory is 8.0GB. [2023-12-05 21:21:23,704 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 245.4MB. Free memory is still 201.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 249.68ms. Allocated memory is still 245.4MB. Free memory was 203.4MB in the beginning and 192.1MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.63ms. Allocated memory is still 245.4MB. Free memory was 192.1MB in the beginning and 190.5MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.21ms. Allocated memory is still 245.4MB. Free memory was 190.5MB in the beginning and 189.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 507.81ms. Allocated memory is still 245.4MB. Free memory was 188.7MB in the beginning and 171.3MB in the end (delta: 17.5MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 1374.32ms. Allocated memory is still 245.4MB. Free memory was 170.5MB in the beginning and 110.3MB in the end (delta: 60.2MB). Peak memory consumption was 61.8MB. 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, 119 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: 1.3s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 46 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 46 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 72 IncrementalHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 21 mSDtfsCounter, 72 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=251occurred 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, 0.5s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 257 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 21:21:23,724 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...