/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/goblint-regression/05-lval_ls_01-idx_rc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 17:17:30,875 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 17:17:30,958 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-VariableLbe.epf [2023-08-25 17:17:30,962 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 17:17:30,963 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 17:17:30,993 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 17:17:30,993 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 17:17:30,994 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 17:17:30,994 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 17:17:30,998 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 17:17:30,998 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 17:17:30,998 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 17:17:30,999 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 17:17:31,000 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 17:17:31,000 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 17:17:31,000 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 17:17:31,000 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 17:17:31,001 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 17:17:31,001 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 17:17:31,001 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 17:17:31,001 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 17:17:31,002 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 17:17:31,002 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 17:17:31,003 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 17:17:31,003 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 17:17:31,003 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 17:17:31,004 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 17:17:31,004 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 17:17:31,004 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 17:17:31,005 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 17:17:31,005 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 17:17:31,006 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 17:17:31,006 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 17:17:31,006 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 17:17:31,006 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 17:17:31,007 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 17:17:31,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 17:17:31,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 17:17:31,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 17:17:31,358 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 17:17:31,360 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 17:17:31,361 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/05-lval_ls_01-idx_rc.i [2023-08-25 17:17:32,491 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 17:17:32,760 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 17:17:32,761 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/05-lval_ls_01-idx_rc.i [2023-08-25 17:17:32,773 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/144cf616a/d3b4f97f44d74fe091e90dd94c9e5288/FLAG83f88f630 [2023-08-25 17:17:32,784 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/144cf616a/d3b4f97f44d74fe091e90dd94c9e5288 [2023-08-25 17:17:32,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 17:17:32,787 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 17:17:32,788 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 17:17:32,788 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 17:17:32,791 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 17:17:32,791 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 05:17:32" (1/1) ... [2023-08-25 17:17:32,792 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39f9dd26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:32, skipping insertion in model container [2023-08-25 17:17:32,792 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 05:17:32" (1/1) ... [2023-08-25 17:17:32,829 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 17:17:33,128 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 17:17:33,152 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 17:17:33,178 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 17:17:33,179 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 17:17:33,202 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 17:17:33,236 INFO L206 MainTranslator]: Completed translation [2023-08-25 17:17:33,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:33 WrapperNode [2023-08-25 17:17:33,237 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 17:17:33,238 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 17:17:33,238 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 17:17:33,238 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 17:17:33,244 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:33" (1/1) ... [2023-08-25 17:17:33,270 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:33" (1/1) ... [2023-08-25 17:17:33,290 INFO L138 Inliner]: procedures = 161, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2023-08-25 17:17:33,291 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 17:17:33,291 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 17:17:33,292 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 17:17:33,292 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 17:17:33,299 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:33" (1/1) ... [2023-08-25 17:17:33,299 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:33" (1/1) ... [2023-08-25 17:17:33,306 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:33" (1/1) ... [2023-08-25 17:17:33,307 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:33" (1/1) ... [2023-08-25 17:17:33,321 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:33" (1/1) ... [2023-08-25 17:17:33,323 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:33" (1/1) ... [2023-08-25 17:17:33,324 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:33" (1/1) ... [2023-08-25 17:17:33,325 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:33" (1/1) ... [2023-08-25 17:17:33,327 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 17:17:33,328 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 17:17:33,328 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 17:17:33,328 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 17:17:33,328 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:33" (1/1) ... [2023-08-25 17:17:33,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 17:17:33,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:17:33,358 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) [2023-08-25 17:17:33,375 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 [2023-08-25 17:17:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 17:17:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 17:17:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 17:17:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 17:17:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-25 17:17:33,401 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-25 17:17:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 17:17:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 17:17:33,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 17:17:33,402 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 17:17:33,531 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 17:17:33,533 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 17:17:33,648 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 17:17:33,653 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 17:17:33,653 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-25 17:17:33,655 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 05:17:33 BoogieIcfgContainer [2023-08-25 17:17:33,655 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 17:17:33,657 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 17:17:33,657 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 17:17:33,660 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 17:17:33,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 05:17:32" (1/3) ... [2023-08-25 17:17:33,660 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38dda8b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 05:17:33, skipping insertion in model container [2023-08-25 17:17:33,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:33" (2/3) ... [2023-08-25 17:17:33,661 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38dda8b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 05:17:33, skipping insertion in model container [2023-08-25 17:17:33,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 05:17:33" (3/3) ... [2023-08-25 17:17:33,662 INFO L112 eAbstractionObserver]: Analyzing ICFG 05-lval_ls_01-idx_rc.i [2023-08-25 17:17:33,677 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 17:17:33,677 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-25 17:17:33,678 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 17:17:33,715 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-25 17:17:33,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 62 transitions, 129 flow [2023-08-25 17:17:33,769 INFO L124 PetriNetUnfolderBase]: 2/61 cut-off events. [2023-08-25 17:17:33,769 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 17:17:33,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 61 events. 2/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 52 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2023-08-25 17:17:33,772 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 62 transitions, 129 flow [2023-08-25 17:17:33,776 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 61 transitions, 125 flow [2023-08-25 17:17:33,778 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 17:17:33,785 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 61 transitions, 125 flow [2023-08-25 17:17:33,788 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 61 transitions, 125 flow [2023-08-25 17:17:33,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 61 transitions, 125 flow [2023-08-25 17:17:33,803 INFO L124 PetriNetUnfolderBase]: 2/61 cut-off events. [2023-08-25 17:17:33,804 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 17:17:33,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 61 events. 2/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 52 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2023-08-25 17:17:33,805 INFO L119 LiptonReduction]: Number of co-enabled transitions 714 [2023-08-25 17:17:34,703 INFO L134 LiptonReduction]: Checked pairs total: 2275 [2023-08-25 17:17:34,704 INFO L136 LiptonReduction]: Total number of compositions: 38 [2023-08-25 17:17:34,715 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 17:17:34,721 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=LoopsAndPotentialCycles, 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;@74a8406c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 17:17:34,722 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-25 17:17:34,732 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 17:17:34,733 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2023-08-25 17:17:34,733 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 17:17:34,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:17:34,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-25 17:17:34,734 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:17:34,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:17:34,739 INFO L85 PathProgramCache]: Analyzing trace with hash 2125407067, now seen corresponding path program 1 times [2023-08-25 17:17:34,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:17:34,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078655493] [2023-08-25 17:17:34,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:17:34,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:17:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:17:34,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:17:34,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:17:34,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078655493] [2023-08-25 17:17:34,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078655493] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:17:34,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:17:34,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 17:17:34,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932729074] [2023-08-25 17:17:34,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:17:34,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 17:17:34,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:17:34,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 17:17:34,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 17:17:34,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 100 [2023-08-25 17:17:34,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 24 transitions, 51 flow. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2023-08-25 17:17:34,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:17:34,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 100 [2023-08-25 17:17:34,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:17:35,032 INFO L124 PetriNetUnfolderBase]: 21/75 cut-off events. [2023-08-25 17:17:35,032 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 17:17:35,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 75 events. 21/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 218 event pairs, 20 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 119. Up to 54 conditions per place. [2023-08-25 17:17:35,035 INFO L140 encePairwiseOnDemand]: 97/100 looper letters, 12 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-08-25 17:17:35,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 25 transitions, 81 flow [2023-08-25 17:17:35,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 17:17:35,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 17:17:35,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 171 transitions. [2023-08-25 17:17:35,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.57 [2023-08-25 17:17:35,049 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 171 transitions. [2023-08-25 17:17:35,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 171 transitions. [2023-08-25 17:17:35,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:17:35,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 171 transitions. [2023-08-25 17:17:35,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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) [2023-08-25 17:17:35,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2023-08-25 17:17:35,064 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2023-08-25 17:17:35,065 INFO L175 Difference]: Start difference. First operand has 27 places, 24 transitions, 51 flow. Second operand 3 states and 171 transitions. [2023-08-25 17:17:35,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 25 transitions, 81 flow [2023-08-25 17:17:35,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 25 transitions, 80 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 17:17:35,070 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 62 flow [2023-08-25 17:17:35,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2023-08-25 17:17:35,075 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2023-08-25 17:17:35,076 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 62 flow [2023-08-25 17:17:35,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2023-08-25 17:17:35,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:17:35,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:17:35,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 17:17:35,077 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:17:35,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:17:35,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1411548373, now seen corresponding path program 1 times [2023-08-25 17:17:35,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:17:35,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552663986] [2023-08-25 17:17:35,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:17:35,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:17:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:17:35,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:17:35,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:17:35,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552663986] [2023-08-25 17:17:35,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552663986] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:17:35,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436944230] [2023-08-25 17:17:35,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:17:35,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:17:35,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:17:35,174 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 17:17:35,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-25 17:17:35,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:17:35,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 17:17:35,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:17:35,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 17:17:35,329 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 17:17:35,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436944230] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:17:35,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 17:17:35,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-25 17:17:35,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617248813] [2023-08-25 17:17:35,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:17:35,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 17:17:35,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:17:35,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 17:17:35,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 17:17:35,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 100 [2023-08-25 17:17:35,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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) [2023-08-25 17:17:35,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:17:35,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 100 [2023-08-25 17:17:35,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:17:35,408 INFO L124 PetriNetUnfolderBase]: 78/201 cut-off events. [2023-08-25 17:17:35,409 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 17:17:35,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 393 conditions, 201 events. 78/201 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 850 event pairs, 34 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 382. Up to 112 conditions per place. [2023-08-25 17:17:35,411 INFO L140 encePairwiseOnDemand]: 92/100 looper letters, 31 selfloop transitions, 6 changer transitions 0/40 dead transitions. [2023-08-25 17:17:35,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 40 transitions, 166 flow [2023-08-25 17:17:35,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 17:17:35,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 17:17:35,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 182 transitions. [2023-08-25 17:17:35,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6066666666666667 [2023-08-25 17:17:35,413 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 182 transitions. [2023-08-25 17:17:35,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 182 transitions. [2023-08-25 17:17:35,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:17:35,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 182 transitions. [2023-08-25 17:17:35,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:17:35,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2023-08-25 17:17:35,416 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2023-08-25 17:17:35,416 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 62 flow. Second operand 3 states and 182 transitions. [2023-08-25 17:17:35,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 40 transitions, 166 flow [2023-08-25 17:17:35,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 40 transitions, 162 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-25 17:17:35,418 INFO L231 Difference]: Finished difference. Result has 32 places, 31 transitions, 110 flow [2023-08-25 17:17:35,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=32, PETRI_TRANSITIONS=31} [2023-08-25 17:17:35,419 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-08-25 17:17:35,419 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 31 transitions, 110 flow [2023-08-25 17:17:35,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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) [2023-08-25 17:17:35,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:17:35,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:17:35,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-25 17:17:35,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:17:35,626 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:17:35,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:17:35,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1019312455, now seen corresponding path program 1 times [2023-08-25 17:17:35,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:17:35,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515618105] [2023-08-25 17:17:35,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:17:35,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:17:35,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:17:35,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:17:35,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:17:35,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515618105] [2023-08-25 17:17:35,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515618105] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:17:35,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173738155] [2023-08-25 17:17:35,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:17:35,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:17:35,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:17:35,685 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 17:17:35,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-25 17:17:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:17:35,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 17:17:35,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:17:35,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 17:17:35,769 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 17:17:35,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173738155] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:17:35,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 17:17:35,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-25 17:17:35,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067457673] [2023-08-25 17:17:35,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:17:35,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 17:17:35,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:17:35,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 17:17:35,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 17:17:35,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 100 [2023-08-25 17:17:35,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 31 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2023-08-25 17:17:35,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:17:35,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 100 [2023-08-25 17:17:35,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:17:35,869 INFO L124 PetriNetUnfolderBase]: 83/207 cut-off events. [2023-08-25 17:17:35,869 INFO L125 PetriNetUnfolderBase]: For 94/100 co-relation queries the response was YES. [2023-08-25 17:17:35,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521 conditions, 207 events. 83/207 cut-off events. For 94/100 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 830 event pairs, 34 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 505. Up to 145 conditions per place. [2023-08-25 17:17:35,873 INFO L140 encePairwiseOnDemand]: 94/100 looper letters, 32 selfloop transitions, 7 changer transitions 2/44 dead transitions. [2023-08-25 17:17:35,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 44 transitions, 236 flow [2023-08-25 17:17:35,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 17:17:35,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 17:17:35,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 168 transitions. [2023-08-25 17:17:35,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56 [2023-08-25 17:17:35,878 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 168 transitions. [2023-08-25 17:17:35,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 168 transitions. [2023-08-25 17:17:35,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:17:35,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 168 transitions. [2023-08-25 17:17:35,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2023-08-25 17:17:35,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2023-08-25 17:17:35,882 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2023-08-25 17:17:35,883 INFO L175 Difference]: Start difference. First operand has 32 places, 31 transitions, 110 flow. Second operand 3 states and 168 transitions. [2023-08-25 17:17:35,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 44 transitions, 236 flow [2023-08-25 17:17:35,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 44 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 17:17:35,887 INFO L231 Difference]: Finished difference. Result has 34 places, 36 transitions, 154 flow [2023-08-25 17:17:35,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=34, PETRI_TRANSITIONS=36} [2023-08-25 17:17:35,888 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-08-25 17:17:35,889 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 36 transitions, 154 flow [2023-08-25 17:17:35,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2023-08-25 17:17:35,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:17:35,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:17:35,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-25 17:17:36,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-25 17:17:36,096 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:17:36,097 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:17:36,097 INFO L85 PathProgramCache]: Analyzing trace with hash 186233729, now seen corresponding path program 1 times [2023-08-25 17:17:36,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:17:36,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478409560] [2023-08-25 17:17:36,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:17:36,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:17:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:17:36,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:17:36,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:17:36,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478409560] [2023-08-25 17:17:36,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478409560] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:17:36,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630802689] [2023-08-25 17:17:36,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:17:36,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:17:36,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:17:36,177 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 17:17:36,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-25 17:17:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:17:36,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 17:17:36,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:17:36,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 17:17:36,240 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 17:17:36,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630802689] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:17:36,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 17:17:36,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-25 17:17:36,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118477320] [2023-08-25 17:17:36,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:17:36,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 17:17:36,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:17:36,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 17:17:36,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 17:17:36,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 100 [2023-08-25 17:17:36,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 36 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2023-08-25 17:17:36,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:17:36,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 100 [2023-08-25 17:17:36,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:17:36,307 INFO L124 PetriNetUnfolderBase]: 81/213 cut-off events. [2023-08-25 17:17:36,308 INFO L125 PetriNetUnfolderBase]: For 145/151 co-relation queries the response was YES. [2023-08-25 17:17:36,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 213 events. 81/213 cut-off events. For 145/151 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 885 event pairs, 30 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 590. Up to 147 conditions per place. [2023-08-25 17:17:36,311 INFO L140 encePairwiseOnDemand]: 94/100 looper letters, 28 selfloop transitions, 7 changer transitions 12/50 dead transitions. [2023-08-25 17:17:36,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 50 transitions, 310 flow [2023-08-25 17:17:36,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 17:17:36,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 17:17:36,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 170 transitions. [2023-08-25 17:17:36,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2023-08-25 17:17:36,313 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 170 transitions. [2023-08-25 17:17:36,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 170 transitions. [2023-08-25 17:17:36,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:17:36,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 170 transitions. [2023-08-25 17:17:36,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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) [2023-08-25 17:17:36,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2023-08-25 17:17:36,316 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2023-08-25 17:17:36,316 INFO L175 Difference]: Start difference. First operand has 34 places, 36 transitions, 154 flow. Second operand 3 states and 170 transitions. [2023-08-25 17:17:36,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 50 transitions, 310 flow [2023-08-25 17:17:36,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 50 transitions, 288 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 17:17:36,324 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 172 flow [2023-08-25 17:17:36,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2023-08-25 17:17:36,330 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-08-25 17:17:36,330 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 172 flow [2023-08-25 17:17:36,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2023-08-25 17:17:36,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:17:36,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:17:36,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-25 17:17:36,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:17:36,537 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:17:36,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:17:36,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1655172997, now seen corresponding path program 1 times [2023-08-25 17:17:36,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:17:36,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598945577] [2023-08-25 17:17:36,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:17:36,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:17:36,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:17:36,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:17:36,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:17:36,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598945577] [2023-08-25 17:17:36,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598945577] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:17:36,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221904725] [2023-08-25 17:17:36,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:17:36,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:17:36,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:17:36,597 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 17:17:36,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-25 17:17:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:17:36,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 17:17:36,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:17:36,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:17:36,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:17:36,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:17:36,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221904725] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 17:17:36,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 17:17:36,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-25 17:17:36,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965364338] [2023-08-25 17:17:36,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 17:17:36,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 17:17:36,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:17:36,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 17:17:36,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-25 17:17:36,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 100 [2023-08-25 17:17:36,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 172 flow. Second operand has 7 states, 7 states have (on average 53.857142857142854) internal successors, (377), 7 states have internal predecessors, (377), 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) [2023-08-25 17:17:36,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:17:36,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 100 [2023-08-25 17:17:36,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:17:36,752 INFO L124 PetriNetUnfolderBase]: 31/142 cut-off events. [2023-08-25 17:17:36,752 INFO L125 PetriNetUnfolderBase]: For 168/179 co-relation queries the response was YES. [2023-08-25 17:17:36,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 420 conditions, 142 events. 31/142 cut-off events. For 168/179 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 629 event pairs, 15 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 393. Up to 82 conditions per place. [2023-08-25 17:17:36,754 INFO L140 encePairwiseOnDemand]: 97/100 looper letters, 16 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2023-08-25 17:17:36,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 38 transitions, 226 flow [2023-08-25 17:17:36,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 17:17:36,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 17:17:36,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 332 transitions. [2023-08-25 17:17:36,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5533333333333333 [2023-08-25 17:17:36,756 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 332 transitions. [2023-08-25 17:17:36,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 332 transitions. [2023-08-25 17:17:36,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:17:36,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 332 transitions. [2023-08-25 17:17:36,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 55.333333333333336) internal successors, (332), 6 states have internal predecessors, (332), 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) [2023-08-25 17:17:36,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 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) [2023-08-25 17:17:36,758 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 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) [2023-08-25 17:17:36,759 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 172 flow. Second operand 6 states and 332 transitions. [2023-08-25 17:17:36,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 38 transitions, 226 flow [2023-08-25 17:17:36,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 38 transitions, 212 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 17:17:36,764 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 194 flow [2023-08-25 17:17:36,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=194, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2023-08-25 17:17:36,766 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2023-08-25 17:17:36,766 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 194 flow [2023-08-25 17:17:36,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 53.857142857142854) internal successors, (377), 7 states have internal predecessors, (377), 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) [2023-08-25 17:17:36,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:17:36,767 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:17:36,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-25 17:17:36,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:17:36,975 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:17:36,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:17:36,975 INFO L85 PathProgramCache]: Analyzing trace with hash -453150747, now seen corresponding path program 2 times [2023-08-25 17:17:36,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:17:36,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840248227] [2023-08-25 17:17:36,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:17:36,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:17:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:17:37,085 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:17:37,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:17:37,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840248227] [2023-08-25 17:17:37,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840248227] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:17:37,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993746650] [2023-08-25 17:17:37,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 17:17:37,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:17:37,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:17:37,087 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 17:17:37,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-25 17:17:37,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 17:17:37,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 17:17:37,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 17:17:37,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:17:37,186 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:17:37,187 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:17:37,242 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:17:37,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993746650] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 17:17:37,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 17:17:37,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-25 17:17:37,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952517559] [2023-08-25 17:17:37,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 17:17:37,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-25 17:17:37,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:17:37,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-25 17:17:37,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-25 17:17:37,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 100 [2023-08-25 17:17:37,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 194 flow. Second operand has 13 states, 13 states have (on average 53.46153846153846) internal successors, (695), 13 states have internal predecessors, (695), 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) [2023-08-25 17:17:37,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:17:37,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 100 [2023-08-25 17:17:37,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:17:37,296 INFO L124 PetriNetUnfolderBase]: 31/148 cut-off events. [2023-08-25 17:17:37,296 INFO L125 PetriNetUnfolderBase]: For 141/152 co-relation queries the response was YES. [2023-08-25 17:17:37,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 148 events. 31/148 cut-off events. For 141/152 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 629 event pairs, 15 based on Foata normal form. 6/146 useless extension candidates. Maximal degree in co-relation 374. Up to 82 conditions per place. [2023-08-25 17:17:37,297 INFO L140 encePairwiseOnDemand]: 97/100 looper letters, 16 selfloop transitions, 11 changer transitions 0/44 dead transitions. [2023-08-25 17:17:37,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 44 transitions, 284 flow [2023-08-25 17:17:37,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-25 17:17:37,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-25 17:17:37,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 653 transitions. [2023-08-25 17:17:37,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5441666666666667 [2023-08-25 17:17:37,299 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 653 transitions. [2023-08-25 17:17:37,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 653 transitions. [2023-08-25 17:17:37,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:17:37,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 653 transitions. [2023-08-25 17:17:37,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 54.416666666666664) internal successors, (653), 12 states have internal predecessors, (653), 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) [2023-08-25 17:17:37,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 100.0) internal successors, (1300), 13 states have internal predecessors, (1300), 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) [2023-08-25 17:17:37,304 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 100.0) internal successors, (1300), 13 states have internal predecessors, (1300), 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) [2023-08-25 17:17:37,304 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 194 flow. Second operand 12 states and 653 transitions. [2023-08-25 17:17:37,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 44 transitions, 284 flow [2023-08-25 17:17:37,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 44 transitions, 270 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-25 17:17:37,306 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 264 flow [2023-08-25 17:17:37,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=264, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2023-08-25 17:17:37,307 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 31 predicate places. [2023-08-25 17:17:37,307 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 264 flow [2023-08-25 17:17:37,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 53.46153846153846) internal successors, (695), 13 states have internal predecessors, (695), 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) [2023-08-25 17:17:37,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:17:37,308 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:17:37,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-25 17:17:37,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:17:37,519 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:17:37,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:17:37,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1102023461, now seen corresponding path program 3 times [2023-08-25 17:17:37,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:17:37,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003325394] [2023-08-25 17:17:37,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:17:37,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:17:37,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:17:37,540 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 17:17:37,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:17:37,573 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 17:17:37,573 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 17:17:37,574 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (6 of 7 remaining) [2023-08-25 17:17:37,575 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2023-08-25 17:17:37,576 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2023-08-25 17:17:37,576 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-08-25 17:17:37,576 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2023-08-25 17:17:37,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2023-08-25 17:17:37,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2023-08-25 17:17:37,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 17:17:37,577 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2023-08-25 17:17:37,582 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-25 17:17:37,582 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 17:17:37,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 05:17:37 BasicIcfg [2023-08-25 17:17:37,618 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 17:17:37,619 INFO L158 Benchmark]: Toolchain (without parser) took 4830.74ms. Allocated memory was 356.5MB in the beginning and 436.2MB in the end (delta: 79.7MB). Free memory was 331.8MB in the beginning and 378.5MB in the end (delta: -46.7MB). Peak memory consumption was 34.6MB. Max. memory is 16.0GB. [2023-08-25 17:17:37,619 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 356.5MB. Free memory is still 332.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 17:17:37,619 INFO L158 Benchmark]: CACSL2BoogieTranslator took 448.79ms. Allocated memory is still 356.5MB. Free memory was 331.8MB in the beginning and 312.4MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-25 17:17:37,619 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.73ms. Allocated memory is still 356.5MB. Free memory was 312.4MB in the beginning and 310.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 17:17:37,619 INFO L158 Benchmark]: Boogie Preprocessor took 35.87ms. Allocated memory is still 356.5MB. Free memory was 310.8MB in the beginning and 309.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 17:17:37,620 INFO L158 Benchmark]: RCFGBuilder took 327.37ms. Allocated memory is still 356.5MB. Free memory was 309.3MB in the beginning and 297.1MB in the end (delta: 12.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-25 17:17:37,620 INFO L158 Benchmark]: TraceAbstraction took 3960.77ms. Allocated memory was 356.5MB in the beginning and 436.2MB in the end (delta: 79.7MB). Free memory was 296.2MB in the beginning and 378.5MB in the end (delta: -82.3MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 17:17:37,623 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 356.5MB. Free memory is still 332.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 448.79ms. Allocated memory is still 356.5MB. Free memory was 331.8MB in the beginning and 312.4MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 52.73ms. Allocated memory is still 356.5MB. Free memory was 312.4MB in the beginning and 310.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 35.87ms. Allocated memory is still 356.5MB. Free memory was 310.8MB in the beginning and 309.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 327.37ms. Allocated memory is still 356.5MB. Free memory was 309.3MB in the beginning and 297.1MB in the end (delta: 12.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 3960.77ms. Allocated memory was 356.5MB in the beginning and 436.2MB in the end (delta: 79.7MB). Free memory was 296.2MB in the beginning and 378.5MB in the end (delta: -82.3MB). There was no memory consumed. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.9s, 63 PlacesBefore, 27 PlacesAfterwards, 61 TransitionsBefore, 24 TransitionsAfterwards, 714 CoEnabledTransitionPairs, 4 FixpointIterations, 17 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 38 TotalNumberOfCompositions, 2275 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 991, independent: 829, independent conditional: 0, independent unconditional: 829, dependent: 162, dependent conditional: 0, dependent unconditional: 162, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 387, independent: 355, independent conditional: 0, independent unconditional: 355, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 991, independent: 474, independent conditional: 0, independent unconditional: 474, dependent: 130, dependent conditional: 0, dependent unconditional: 130, unknown: 387, unknown conditional: 0, unknown unconditional: 387] , Statistics on independence cache: Total cache size (in pairs): 80, Positive cache size: 62, Positive conditional cache size: 0, Positive unconditional cache size: 62, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - DataRaceFoundResult [Line: 683]: Data race detected Data race detected The following path leads to a data race: [L679] 0 int data; [L680] 0 pthread_mutex_t m[10]; [L688] 0 int i = 0; VAL [data=0, i=0, m={1:0}] [L688] COND TRUE 0 i < 10 [L688] 0 i++ VAL [data=0, i=1, m={1:0}] [L688] COND TRUE 0 i < 10 [L688] 0 i++ VAL [data=0, i=2, m={1:0}] [L688] COND TRUE 0 i < 10 [L688] 0 i++ VAL [data=0, i=3, m={1:0}] [L688] COND TRUE 0 i < 10 [L688] 0 i++ VAL [data=0, i=4, m={1:0}] [L688] COND TRUE 0 i < 10 [L688] 0 i++ VAL [data=0, i=5, m={1:0}] [L688] COND TRUE 0 i < 10 [L688] 0 i++ VAL [data=0, i=6, m={1:0}] [L688] COND TRUE 0 i < 10 [L688] 0 i++ VAL [data=0, i=7, m={1:0}] [L688] COND TRUE 0 i < 10 [L688] 0 i++ VAL [data=0, i=8, m={1:0}] [L688] COND TRUE 0 i < 10 [L688] 0 i++ VAL [data=0, i=9, m={1:0}] [L688] COND TRUE 0 i < 10 [L688] 0 i++ VAL [data=0, i=10, m={1:0}] [L688] COND FALSE 0 !(i < 10) [L690] 0 pthread_t id; [L691] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [arg={0:0}, data=0, id={2:0}, m={1:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1] [L693] 0 data++ VAL [arg={0:0}, data++=0, data=1, id={2:0}, m={1:0}] [L683] 1 data++ VAL [arg={0:0}, arg={0:0}, data=1, m={1:0}] [L683] 1 data++ VAL [arg={0:0}, arg={0:0}, data=1, m={1:0}] Now there is a data race on ~data~0 between C: data++ [693] and C: data++ [683] - UnprovableResult [Line: 693]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 691]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 683]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 80 locations, 7 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: 3.8s, OverallIterations: 7, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 245 IncrementalHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 23 mSDtfsCounter, 245 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=264occurred in iteration=6, InterpolantAutomatonStates: 30, 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: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 138 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 427 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 3/39 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 RESULT: Ultimate proved your program to be incorrect! [2023-08-25 17:17:37,661 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...