/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 -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:39:59,944 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:40:00,004 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-SemanticLbe.epf [2023-11-17 15:40:00,027 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:40:00,028 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:40:00,028 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:40:00,029 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:40:00,029 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:40:00,029 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:40:00,030 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:40:00,030 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:40:00,030 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:40:00,031 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:40:00,031 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:40:00,032 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:40:00,032 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:40:00,032 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:40:00,033 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:40:00,033 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:40:00,033 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:40:00,034 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:40:00,034 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:40:00,035 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:40:00,035 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:40:00,035 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:40:00,036 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:40:00,036 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:40:00,036 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:40:00,037 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:40:00,037 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:40:00,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:40:00,038 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:40:00,038 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:40:00,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:40:00,327 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:40:00,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:40:00,331 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:40:00,332 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:40:00,333 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i [2023-11-17 15:40:01,556 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:40:01,827 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:40:01,828 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i [2023-11-17 15:40:01,846 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af2ae9610/8c4bd7182fa44373852a6f6ae940f13a/FLAG1e9405575 [2023-11-17 15:40:01,859 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af2ae9610/8c4bd7182fa44373852a6f6ae940f13a [2023-11-17 15:40:01,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:40:01,862 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:40:01,863 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:40:01,863 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:40:01,867 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:40:01,867 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:40:01" (1/1) ... [2023-11-17 15:40:01,868 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52f8a5bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:01, skipping insertion in model container [2023-11-17 15:40:01,868 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:40:01" (1/1) ... [2023-11-17 15:40:01,922 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:40:02,294 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2023-11-17 15:40:02,336 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:40:02,348 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:40:02,373 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2023-11-17 15:40:02,382 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:40:02,432 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:40:02,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:02 WrapperNode [2023-11-17 15:40:02,434 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:40:02,435 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:40:02,436 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:40:02,436 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:40:02,442 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:02" (1/1) ... [2023-11-17 15:40:02,460 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:02" (1/1) ... [2023-11-17 15:40:02,495 INFO L138 Inliner]: procedures = 279, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 224 [2023-11-17 15:40:02,495 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:40:02,496 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:40:02,496 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:40:02,496 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:40:02,504 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:02" (1/1) ... [2023-11-17 15:40:02,505 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:02" (1/1) ... [2023-11-17 15:40:02,520 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:02" (1/1) ... [2023-11-17 15:40:02,520 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:02" (1/1) ... [2023-11-17 15:40:02,529 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:02" (1/1) ... [2023-11-17 15:40:02,549 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:02" (1/1) ... [2023-11-17 15:40:02,551 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:02" (1/1) ... [2023-11-17 15:40:02,552 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:02" (1/1) ... [2023-11-17 15:40:02,555 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:40:02,556 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:40:02,556 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:40:02,556 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:40:02,557 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:02" (1/1) ... [2023-11-17 15:40:02,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:40:02,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:40:02,608 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) [2023-11-17 15:40:02,623 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 [2023-11-17 15:40:02,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:40:02,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-17 15:40:02,641 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-17 15:40:02,641 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-17 15:40:02,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:40:02,642 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-17 15:40:02,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 15:40:02,642 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-17 15:40:02,643 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-17 15:40:02,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:40:02,670 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-17 15:40:02,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 15:40:02,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:40:02,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-17 15:40:02,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:40:02,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:40:02,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:40:02,674 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 15:40:02,821 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:40:02,823 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:40:03,110 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:40:03,153 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:40:03,154 INFO L307 CfgBuilder]: Removed 15 assume(true) statements. [2023-11-17 15:40:03,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:40:03 BoogieIcfgContainer [2023-11-17 15:40:03,155 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:40:03,161 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:40:03,161 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:40:03,164 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:40:03,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:40:01" (1/3) ... [2023-11-17 15:40:03,166 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cbafca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:40:03, skipping insertion in model container [2023-11-17 15:40:03,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:02" (2/3) ... [2023-11-17 15:40:03,166 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cbafca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:40:03, skipping insertion in model container [2023-11-17 15:40:03,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:40:03" (3/3) ... [2023-11-17 15:40:03,167 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2023-11-17 15:40:03,182 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:40:03,182 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 15:40:03,183 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:40:03,289 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-17 15:40:03,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 228 transitions, 476 flow [2023-11-17 15:40:03,482 INFO L124 PetriNetUnfolderBase]: 52/438 cut-off events. [2023-11-17 15:40:03,482 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-17 15:40:03,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 438 events. 52/438 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1780 event pairs, 0 based on Foata normal form. 0/376 useless extension candidates. Maximal degree in co-relation 222. Up to 8 conditions per place. [2023-11-17 15:40:03,497 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 228 transitions, 476 flow [2023-11-17 15:40:03,510 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 226 transitions, 466 flow [2023-11-17 15:40:03,513 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:40:03,522 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 210 places, 226 transitions, 466 flow [2023-11-17 15:40:03,524 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 210 places, 226 transitions, 466 flow [2023-11-17 15:40:03,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 226 transitions, 466 flow [2023-11-17 15:40:03,591 INFO L124 PetriNetUnfolderBase]: 48/426 cut-off events. [2023-11-17 15:40:03,592 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 15:40:03,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 426 events. 48/426 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1714 event pairs, 0 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 210. Up to 8 conditions per place. [2023-11-17 15:40:03,609 INFO L119 LiptonReduction]: Number of co-enabled transitions 15950 [2023-11-17 15:40:22,099 INFO L134 LiptonReduction]: Checked pairs total: 25075 [2023-11-17 15:40:22,099 INFO L136 LiptonReduction]: Total number of compositions: 194 [2023-11-17 15:40:22,113 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:40:22,118 INFO L357 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=false, 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;@f279170, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:40:22,118 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 15:40:22,122 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:40:22,122 INFO L124 PetriNetUnfolderBase]: 2/25 cut-off events. [2023-11-17 15:40:22,122 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:40:22,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:40:22,123 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-17 15:40:22,124 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:40:22,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:40:22,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1937504869, now seen corresponding path program 1 times [2023-11-17 15:40:22,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:40:22,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202802770] [2023-11-17 15:40:22,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:40:22,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:40:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 15:40:22,302 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-17 15:40:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 15:40:22,385 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-17 15:40:22,387 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-17 15:40:22,388 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-11-17 15:40:22,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-11-17 15:40:22,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 15:40:22,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-11-17 15:40:22,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:40:22,391 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-17 15:40:22,397 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-17 15:40:22,397 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-17 15:40:22,473 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-17 15:40:22,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 322 places, 355 transitions, 754 flow [2023-11-17 15:40:22,716 INFO L124 PetriNetUnfolderBase]: 191/1298 cut-off events. [2023-11-17 15:40:22,716 INFO L125 PetriNetUnfolderBase]: For 72/87 co-relation queries the response was YES. [2023-11-17 15:40:22,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1387 conditions, 1298 events. 191/1298 cut-off events. For 72/87 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 8305 event pairs, 2 based on Foata normal form. 0/1105 useless extension candidates. Maximal degree in co-relation 811. Up to 32 conditions per place. [2023-11-17 15:40:22,740 INFO L82 GeneralOperation]: Start removeDead. Operand has 322 places, 355 transitions, 754 flow [2023-11-17 15:40:22,751 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 322 places, 355 transitions, 754 flow [2023-11-17 15:40:22,751 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:40:22,752 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 322 places, 355 transitions, 754 flow [2023-11-17 15:40:22,752 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 322 places, 355 transitions, 754 flow [2023-11-17 15:40:22,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 322 places, 355 transitions, 754 flow [2023-11-17 15:40:22,965 INFO L124 PetriNetUnfolderBase]: 191/1298 cut-off events. [2023-11-17 15:40:22,965 INFO L125 PetriNetUnfolderBase]: For 72/87 co-relation queries the response was YES. [2023-11-17 15:40:22,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1387 conditions, 1298 events. 191/1298 cut-off events. For 72/87 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 8305 event pairs, 2 based on Foata normal form. 0/1105 useless extension candidates. Maximal degree in co-relation 811. Up to 32 conditions per place. [2023-11-17 15:40:23,046 INFO L119 LiptonReduction]: Number of co-enabled transitions 64592 [2023-11-17 15:41:11,124 INFO L134 LiptonReduction]: Checked pairs total: 122254 [2023-11-17 15:41:11,125 INFO L136 LiptonReduction]: Total number of compositions: 300 [2023-11-17 15:41:11,127 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:41:11,128 INFO L357 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=false, 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;@f279170, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:41:11,128 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-17 15:41:11,134 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:41:11,134 INFO L124 PetriNetUnfolderBase]: 10/68 cut-off events. [2023-11-17 15:41:11,134 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 15:41:11,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:41:11,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:41:11,135 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 15:41:11,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:41:11,136 INFO L85 PathProgramCache]: Analyzing trace with hash -615803733, now seen corresponding path program 1 times [2023-11-17 15:41:11,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:41:11,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317918856] [2023-11-17 15:41:11,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:41:11,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:41:11,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:41:11,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:41:11,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:41:11,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317918856] [2023-11-17 15:41:11,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317918856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:41:11,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:41:11,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:41:11,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756134014] [2023-11-17 15:41:11,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:41:11,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:41:11,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:41:11,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:41:11,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:41:11,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 655 [2023-11-17 15:41:11,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 113 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 287.0) internal successors, (861), 3 states have internal predecessors, (861), 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) [2023-11-17 15:41:11,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:41:11,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 655 [2023-11-17 15:41:11,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand