/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:19:43,558 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:19:43,626 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-12-05 21:19:43,640 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:19:43,640 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:19:43,640 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:19:43,641 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:19:43,641 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:19:43,641 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:19:43,642 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:19:43,642 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:19:43,642 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:19:43,642 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:19:43,643 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:19:43,644 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:19:43,644 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:19:43,645 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:19:43,647 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:19:43,648 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:19:43,648 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:19:43,649 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:19:43,649 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:19:43,649 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:19:43,650 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:19:43,650 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:19:43,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:19:43,650 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:19:43,650 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:19:43,650 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:19:43,650 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:19:43,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:19:43,651 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:19:43,651 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:19:43,651 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:19:43,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:19:43,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:19:43,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:19:43,850 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:19:43,850 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:19:43,851 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c [2023-12-05 21:19:44,810 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:19:44,954 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:19:44,954 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c [2023-12-05 21:19:44,961 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5c38c3cc/b0d323f84db049aba1128c49aa3cffc9/FLAG9ffa53be4 [2023-12-05 21:19:44,972 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5c38c3cc/b0d323f84db049aba1128c49aa3cffc9 [2023-12-05 21:19:44,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:19:44,975 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:19:44,976 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:19:44,976 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:19:44,981 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:19:44,981 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:19:44" (1/1) ... [2023-12-05 21:19:44,982 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a87a0ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:44, skipping insertion in model container [2023-12-05 21:19:44,982 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:19:44" (1/1) ... [2023-12-05 21:19:45,013 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:19:45,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:19:45,153 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:19:45,184 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:19:45,198 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:19:45,198 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:45 WrapperNode [2023-12-05 21:19:45,199 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:19:45,199 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:19:45,199 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:19:45,199 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:19:45,207 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:45" (1/1) ... [2023-12-05 21:19:45,223 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:45" (1/1) ... [2023-12-05 21:19:45,255 INFO L138 Inliner]: procedures = 26, calls = 77, calls flagged for inlining = 29, calls inlined = 43, statements flattened = 608 [2023-12-05 21:19:45,255 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:19:45,256 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:19:45,256 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:19:45,256 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:19:45,263 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:45" (1/1) ... [2023-12-05 21:19:45,263 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:45" (1/1) ... [2023-12-05 21:19:45,267 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:45" (1/1) ... [2023-12-05 21:19:45,268 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:45" (1/1) ... [2023-12-05 21:19:45,279 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:45" (1/1) ... [2023-12-05 21:19:45,288 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:45" (1/1) ... [2023-12-05 21:19:45,290 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:45" (1/1) ... [2023-12-05 21:19:45,292 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:45" (1/1) ... [2023-12-05 21:19:45,296 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:19:45,296 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:19:45,296 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:19:45,296 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:19:45,297 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:45" (1/1) ... [2023-12-05 21:19:45,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:19:45,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:19:45,323 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-05 21:19:45,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-05 21:19:45,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:19:45,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:19:45,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:19:45,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-05 21:19:45,349 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-05 21:19:45,349 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-05 21:19:45,349 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-05 21:19:45,349 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-05 21:19:45,350 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-12-05 21:19:45,350 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-12-05 21:19:45,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:19:45,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-05 21:19:45,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:19:45,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:19:45,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:19:45,351 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-05 21:19:45,448 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:19:45,451 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:19:46,173 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:19:46,197 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:19:46,197 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-12-05 21:19:46,198 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:19:46 BoogieIcfgContainer [2023-12-05 21:19:46,199 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:19:46,203 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:19:46,203 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:19:46,223 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:19:46,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:19:44" (1/3) ... [2023-12-05 21:19:46,224 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ffe20d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:19:46, skipping insertion in model container [2023-12-05 21:19:46,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:19:45" (2/3) ... [2023-12-05 21:19:46,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ffe20d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:19:46, skipping insertion in model container [2023-12-05 21:19:46,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:19:46" (3/3) ... [2023-12-05 21:19:46,227 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-subst.wvr.c [2023-12-05 21:19:46,239 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:19:46,240 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 66 error locations. [2023-12-05 21:19:46,240 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:19:46,379 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-12-05 21:19:46,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 795 places, 858 transitions, 1737 flow [2023-12-05 21:19:46,714 INFO L124 PetriNetUnfolderBase]: 73/855 cut-off events. [2023-12-05 21:19:46,715 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-12-05 21:19:46,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 855 events. 73/855 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3219 event pairs, 0 based on Foata normal form. 0/716 useless extension candidates. Maximal degree in co-relation 629. Up to 2 conditions per place. [2023-12-05 21:19:46,739 INFO L82 GeneralOperation]: Start removeDead. Operand has 795 places, 858 transitions, 1737 flow [2023-12-05 21:19:46,756 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 769 places, 831 transitions, 1677 flow [2023-12-05 21:19:46,766 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:19:46,771 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;@24d0cbfe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:19:46,771 INFO L363 AbstractCegarLoop]: Starting to check reachability of 117 error locations. [2023-12-05 21:19:46,784 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:19:46,784 INFO L124 PetriNetUnfolderBase]: 3/128 cut-off events. [2023-12-05 21:19:46,784 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:19:46,784 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:19:46,785 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:19:46,785 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 114 more)] === [2023-12-05 21:19:46,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:19:46,790 INFO L85 PathProgramCache]: Analyzing trace with hash -323028597, now seen corresponding path program 1 times [2023-12-05 21:19:46,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:19:46,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853137635] [2023-12-05 21:19:46,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:19:46,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:19:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:19:47,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:19:47,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:19:47,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853137635] [2023-12-05 21:19:47,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853137635] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:19:47,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:19:47,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-05 21:19:47,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5221322] [2023-12-05 21:19:47,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:19:47,191 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-05 21:19:47,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:19:47,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-05 21:19:47,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-05 21:19:47,223 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 718 out of 858 [2023-12-05 21:19:47,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 769 places, 831 transitions, 1677 flow. Second operand has 4 states, 4 states have (on average 720.75) internal successors, (2883), 4 states have internal predecessors, (2883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:19:47,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:19:47,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 718 of 858 [2023-12-05 21:19:47,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:20:06,120 INFO L124 PetriNetUnfolderBase]: 43444/109080 cut-off events. [2023-12-05 21:20:06,120 INFO L125 PetriNetUnfolderBase]: For 308/316 co-relation queries the response was YES. [2023-12-05 21:20:07,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166676 conditions, 109080 events. 43444/109080 cut-off events. For 308/316 co-relation queries the response was YES. Maximal size of possible extension queue 5510. Compared 1561687 event pairs, 40064 based on Foata normal form. 18797/90055 useless extension candidates. Maximal degree in co-relation 160304. Up to 56654 conditions per place. [2023-12-05 21:20:08,262 INFO L140 encePairwiseOnDemand]: 807/858 looper letters, 83 selfloop transitions, 12 changer transitions 6/792 dead transitions. [2023-12-05 21:20:08,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 770 places, 792 transitions, 1789 flow [2023-12-05 21:20:08,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-05 21:20:08,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-12-05 21:20:08,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3724 transitions. [2023-12-05 21:20:08,278 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8680652680652681 [2023-12-05 21:20:08,279 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3724 transitions. [2023-12-05 21:20:08,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3724 transitions. [2023-12-05 21:20:08,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:20:08,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3724 transitions. [2023-12-05 21:20:08,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 744.8) internal successors, (3724), 5 states have internal predecessors, (3724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:20:08,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 858.0) internal successors, (5148), 6 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:20:08,305 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 858.0) internal successors, (5148), 6 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:20:08,307 INFO L308 CegarLoopForPetriNet]: 769 programPoint places, 1 predicate places. [2023-12-05 21:20:08,308 INFO L500 AbstractCegarLoop]: Abstraction has has 770 places, 792 transitions, 1789 flow [2023-12-05 21:20:08,309 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 720.75) internal successors, (2883), 4 states have internal predecessors, (2883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:20:08,309 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:20:08,309 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:20:08,310 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:20:08,310 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 114 more)] === [2023-12-05 21:20:08,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:20:08,310 INFO L85 PathProgramCache]: Analyzing trace with hash -323028596, now seen corresponding path program 1 times [2023-12-05 21:20:08,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:20:08,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609531095] [2023-12-05 21:20:08,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:20:08,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:20:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:20:08,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:20:08,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:20:08,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609531095] [2023-12-05 21:20:08,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609531095] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:20:08,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:20:08,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-05 21:20:08,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373600888] [2023-12-05 21:20:08,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:20:08,623 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-05 21:20:08,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:20:08,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-05 21:20:08,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-05 21:20:08,628 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 692 out of 858 [2023-12-05 21:20:08,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 770 places, 792 transitions, 1789 flow. Second operand has 8 states, 8 states have (on average 693.875) internal successors, (5551), 8 states have internal predecessors, (5551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:20:08,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:20:08,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 692 of 858 [2023-12-05 21:20:08,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand