/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 PROGRAM_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/13-privatized_42-traces-ex-mini_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 07:37:27,741 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 07:37:27,823 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 [2023-08-26 07:37:27,827 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 07:37:27,827 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 07:37:27,860 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 07:37:27,861 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 07:37:27,861 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 07:37:27,862 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 07:37:27,865 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 07:37:27,865 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 07:37:27,866 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 07:37:27,866 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 07:37:27,867 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 07:37:27,867 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 07:37:27,867 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 07:37:27,868 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 07:37:27,868 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 07:37:27,868 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 07:37:27,868 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 07:37:27,868 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 07:37:27,869 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 07:37:27,869 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 07:37:27,870 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 07:37:27,870 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 07:37:27,870 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 07:37:27,870 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 07:37:27,871 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 07:37:27,871 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 07:37:27,871 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 07:37:27,872 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 07:37:27,872 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 07:37:27,872 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 07:37:27,873 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 07:37:27,873 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 07:37:27,873 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 07:37:28,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 07:37:28,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 07:37:28,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 07:37:28,187 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 07:37:28,189 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 07:37:28,190 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_42-traces-ex-mini_true.i [2023-08-26 07:37:29,450 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 07:37:29,659 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 07:37:29,660 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_42-traces-ex-mini_true.i [2023-08-26 07:37:29,678 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dde988050/836b51fa83eb4c97b33783a665a3add7/FLAGacf6a12ea [2023-08-26 07:37:29,689 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dde988050/836b51fa83eb4c97b33783a665a3add7 [2023-08-26 07:37:29,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 07:37:29,692 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 07:37:29,693 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 07:37:29,693 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 07:37:29,695 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 07:37:29,696 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 07:37:29" (1/1) ... [2023-08-26 07:37:29,697 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24be417b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:37:29, skipping insertion in model container [2023-08-26 07:37:29,697 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 07:37:29" (1/1) ... [2023-08-26 07:37:29,730 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 07:37:30,060 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 07:37:30,076 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 07:37:30,093 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-26 07:37:30,095 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-26 07:37:30,108 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 07:37:30,146 INFO L206 MainTranslator]: Completed translation [2023-08-26 07:37:30,147 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:37:30 WrapperNode [2023-08-26 07:37:30,147 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 07:37:30,148 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 07:37:30,148 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 07:37:30,148 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 07:37:30,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:37:30" (1/1) ... [2023-08-26 07:37:30,183 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:37:30" (1/1) ... [2023-08-26 07:37:30,208 INFO L138 Inliner]: procedures = 162, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2023-08-26 07:37:30,208 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 07:37:30,209 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 07:37:30,210 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 07:37:30,210 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 07:37:30,216 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:37:30" (1/1) ... [2023-08-26 07:37:30,217 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:37:30" (1/1) ... [2023-08-26 07:37:30,222 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:37:30" (1/1) ... [2023-08-26 07:37:30,223 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:37:30" (1/1) ... [2023-08-26 07:37:30,226 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:37:30" (1/1) ... [2023-08-26 07:37:30,228 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:37:30" (1/1) ... [2023-08-26 07:37:30,229 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:37:30" (1/1) ... [2023-08-26 07:37:30,230 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:37:30" (1/1) ... [2023-08-26 07:37:30,237 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 07:37:30,238 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 07:37:30,238 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 07:37:30,238 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 07:37:30,239 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:37:30" (1/1) ... [2023-08-26 07:37:30,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 07:37:30,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:37:30,267 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) [2023-08-26 07:37:30,284 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 [2023-08-26 07:37:30,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 07:37:30,305 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 07:37:30,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 07:37:30,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 07:37:30,306 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 07:37:30,306 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 07:37:30,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 07:37:30,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 07:37:30,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 07:37:30,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 07:37:30,308 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 07:37:30,404 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 07:37:30,406 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 07:37:30,538 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 07:37:30,545 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 07:37:30,545 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 07:37:30,546 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 07:37:30 BoogieIcfgContainer [2023-08-26 07:37:30,547 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 07:37:30,549 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 07:37:30,549 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 07:37:30,551 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 07:37:30,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 07:37:29" (1/3) ... [2023-08-26 07:37:30,552 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4052dc6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 07:37:30, skipping insertion in model container [2023-08-26 07:37:30,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:37:30" (2/3) ... [2023-08-26 07:37:30,552 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4052dc6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 07:37:30, skipping insertion in model container [2023-08-26 07:37:30,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 07:37:30" (3/3) ... [2023-08-26 07:37:30,554 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_42-traces-ex-mini_true.i [2023-08-26 07:37:30,569 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 07:37:30,569 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-26 07:37:30,569 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 07:37:30,611 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 07:37:30,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 89 transitions, 183 flow [2023-08-26 07:37:30,675 INFO L124 PetriNetUnfolderBase]: 2/88 cut-off events. [2023-08-26 07:37:30,675 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:37:30,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-26 07:37:30,681 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 89 transitions, 183 flow [2023-08-26 07:37:30,685 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 88 transitions, 179 flow [2023-08-26 07:37:30,688 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:37:30,697 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 88 transitions, 179 flow [2023-08-26 07:37:30,700 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 88 transitions, 179 flow [2023-08-26 07:37:30,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 88 transitions, 179 flow [2023-08-26 07:37:30,724 INFO L124 PetriNetUnfolderBase]: 2/88 cut-off events. [2023-08-26 07:37:30,724 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:37:30,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-26 07:37:30,726 INFO L119 LiptonReduction]: Number of co-enabled transitions 1302 [2023-08-26 07:37:33,535 INFO L134 LiptonReduction]: Checked pairs total: 5081 [2023-08-26 07:37:33,535 INFO L136 LiptonReduction]: Total number of compositions: 67 [2023-08-26 07:37:33,548 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 07:37:33,553 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;@20d8bfe9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:37:33,554 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-26 07:37:33,557 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:37:33,557 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-26 07:37:33,557 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:37:33,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:37:33,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:37:33,558 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 07:37:33,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:37:33,563 INFO L85 PathProgramCache]: Analyzing trace with hash -494527472, now seen corresponding path program 1 times [2023-08-26 07:37:33,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:37:33,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340634943] [2023-08-26 07:37:33,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:37:33,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:37:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:37:33,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:37:33,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:37:33,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340634943] [2023-08-26 07:37:33,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340634943] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:37:33,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:37:33,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:37:33,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879408746] [2023-08-26 07:37:33,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:37:33,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:37:33,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:37:33,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:37:33,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:37:33,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 156 [2023-08-26 07:37:33,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 57 flow. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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) [2023-08-26 07:37:33,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:37:33,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 156 [2023-08-26 07:37:33,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:37:33,885 INFO L124 PetriNetUnfolderBase]: 113/261 cut-off events. [2023-08-26 07:37:33,885 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:37:33,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 261 events. 113/261 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1083 event pairs, 95 based on Foata normal form. 12/214 useless extension candidates. Maximal degree in co-relation 507. Up to 229 conditions per place. [2023-08-26 07:37:33,888 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 32 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2023-08-26 07:37:33,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 38 transitions, 149 flow [2023-08-26 07:37:33,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:37:33,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:37:33,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 260 transitions. [2023-08-26 07:37:33,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2023-08-26 07:37:33,901 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 260 transitions. [2023-08-26 07:37:33,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 260 transitions. [2023-08-26 07:37:33,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:37:33,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 260 transitions. [2023-08-26 07:37:33,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 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) [2023-08-26 07:37:33,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 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) [2023-08-26 07:37:33,910 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 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) [2023-08-26 07:37:33,912 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 57 flow. Second operand 3 states and 260 transitions. [2023-08-26 07:37:33,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 38 transitions, 149 flow [2023-08-26 07:37:33,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 38 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 07:37:33,916 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 73 flow [2023-08-26 07:37:33,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2023-08-26 07:37:33,920 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2023-08-26 07:37:33,920 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 73 flow [2023-08-26 07:37:33,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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) [2023-08-26 07:37:33,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:37:33,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:37:33,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 07:37:33,921 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 07:37:33,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:37:33,922 INFO L85 PathProgramCache]: Analyzing trace with hash -485999791, now seen corresponding path program 1 times [2023-08-26 07:37:33,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:37:33,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715587191] [2023-08-26 07:37:33,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:37:33,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:37:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:37:33,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:37:33,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:37:33,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715587191] [2023-08-26 07:37:33,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715587191] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:37:33,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:37:33,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:37:33,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651347472] [2023-08-26 07:37:33,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:37:33,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:37:33,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:37:33,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:37:33,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:37:33,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 156 [2023-08-26 07:37:33,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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) [2023-08-26 07:37:33,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:37:33,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 156 [2023-08-26 07:37:33,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:37:34,060 INFO L124 PetriNetUnfolderBase]: 142/345 cut-off events. [2023-08-26 07:37:34,060 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-08-26 07:37:34,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 745 conditions, 345 events. 142/345 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1684 event pairs, 38 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 735. Up to 173 conditions per place. [2023-08-26 07:37:34,063 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 35 selfloop transitions, 5 changer transitions 0/43 dead transitions. [2023-08-26 07:37:34,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 43 transitions, 189 flow [2023-08-26 07:37:34,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:37:34,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:37:34,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 267 transitions. [2023-08-26 07:37:34,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5705128205128205 [2023-08-26 07:37:34,065 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 267 transitions. [2023-08-26 07:37:34,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 267 transitions. [2023-08-26 07:37:34,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:37:34,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 267 transitions. [2023-08-26 07:37:34,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 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) [2023-08-26 07:37:34,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 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) [2023-08-26 07:37:34,068 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 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) [2023-08-26 07:37:34,069 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 73 flow. Second operand 3 states and 267 transitions. [2023-08-26 07:37:34,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 43 transitions, 189 flow [2023-08-26 07:37:34,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 43 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 07:37:34,070 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 106 flow [2023-08-26 07:37:34,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2023-08-26 07:37:34,071 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2023-08-26 07:37:34,071 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 106 flow [2023-08-26 07:37:34,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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) [2023-08-26 07:37:34,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:37:34,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:37:34,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 07:37:34,072 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 07:37:34,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:37:34,073 INFO L85 PathProgramCache]: Analyzing trace with hash 2113875964, now seen corresponding path program 1 times [2023-08-26 07:37:34,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:37:34,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552538576] [2023-08-26 07:37:34,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:37:34,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:37:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:37:34,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:37:34,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:37:34,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552538576] [2023-08-26 07:37:34,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552538576] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:37:34,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:37:34,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 07:37:34,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640743474] [2023-08-26 07:37:34,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:37:34,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:37:34,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:37:34,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:37:34,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:37:34,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 156 [2023-08-26 07:37:34,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 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) [2023-08-26 07:37:34,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:37:34,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 156 [2023-08-26 07:37:34,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:37:34,254 INFO L124 PetriNetUnfolderBase]: 85/247 cut-off events. [2023-08-26 07:37:34,254 INFO L125 PetriNetUnfolderBase]: For 76/81 co-relation queries the response was YES. [2023-08-26 07:37:34,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 558 conditions, 247 events. 85/247 cut-off events. For 76/81 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1200 event pairs, 37 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 547. Up to 109 conditions per place. [2023-08-26 07:37:34,256 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 25 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2023-08-26 07:37:34,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 38 transitions, 182 flow [2023-08-26 07:37:34,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:37:34,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:37:34,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2023-08-26 07:37:34,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5769230769230769 [2023-08-26 07:37:34,259 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 270 transitions. [2023-08-26 07:37:34,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 270 transitions. [2023-08-26 07:37:34,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:37:34,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 270 transitions. [2023-08-26 07:37:34,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 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) [2023-08-26 07:37:34,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 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) [2023-08-26 07:37:34,261 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 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) [2023-08-26 07:37:34,262 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 106 flow. Second operand 3 states and 270 transitions. [2023-08-26 07:37:34,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 38 transitions, 182 flow [2023-08-26 07:37:34,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 38 transitions, 170 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:37:34,264 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 109 flow [2023-08-26 07:37:34,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-08-26 07:37:34,265 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2023-08-26 07:37:34,265 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 109 flow [2023-08-26 07:37:34,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 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) [2023-08-26 07:37:34,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:37:34,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:37:34,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 07:37:34,266 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 07:37:34,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:37:34,267 INFO L85 PathProgramCache]: Analyzing trace with hash 227533282, now seen corresponding path program 1 times [2023-08-26 07:37:34,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:37:34,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536341852] [2023-08-26 07:37:34,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:37:34,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:37:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:37:34,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:37:34,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:37:34,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536341852] [2023-08-26 07:37:34,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536341852] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:37:34,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:37:34,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 07:37:34,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229778327] [2023-08-26 07:37:34,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:37:34,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 07:37:34,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:37:34,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 07:37:34,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 07:37:34,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 156 [2023-08-26 07:37:34,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 109 flow. Second operand has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:37:34,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:37:34,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 156 [2023-08-26 07:37:34,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:37:34,479 INFO L124 PetriNetUnfolderBase]: 47/163 cut-off events. [2023-08-26 07:37:34,480 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-08-26 07:37:34,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 163 events. 47/163 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 680 event pairs, 18 based on Foata normal form. 10/168 useless extension candidates. Maximal degree in co-relation 362. Up to 93 conditions per place. [2023-08-26 07:37:34,481 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 20 selfloop transitions, 5 changer transitions 2/33 dead transitions. [2023-08-26 07:37:34,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 33 transitions, 162 flow [2023-08-26 07:37:34,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 07:37:34,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 07:37:34,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 256 transitions. [2023-08-26 07:37:34,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41025641025641024 [2023-08-26 07:37:34,483 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 256 transitions. [2023-08-26 07:37:34,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 256 transitions. [2023-08-26 07:37:34,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:37:34,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 256 transitions. [2023-08-26 07:37:34,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 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) [2023-08-26 07:37:34,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 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) [2023-08-26 07:37:34,485 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 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) [2023-08-26 07:37:34,486 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 109 flow. Second operand 4 states and 256 transitions. [2023-08-26 07:37:34,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 33 transitions, 162 flow [2023-08-26 07:37:34,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 33 transitions, 146 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-26 07:37:34,487 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 91 flow [2023-08-26 07:37:34,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=91, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-08-26 07:37:34,488 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2023-08-26 07:37:34,488 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 91 flow [2023-08-26 07:37:34,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:37:34,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:37:34,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:37:34,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 07:37:34,489 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 07:37:34,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:37:34,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1131613858, now seen corresponding path program 1 times [2023-08-26 07:37:34,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:37:34,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361316916] [2023-08-26 07:37:34,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:37:34,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:37:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:37:34,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:37:34,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:37:34,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361316916] [2023-08-26 07:37:34,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361316916] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:37:34,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:37:34,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:37:34,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101968699] [2023-08-26 07:37:34,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:37:34,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:37:34,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:37:34,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:37:34,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:37:34,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 156 [2023-08-26 07:37:34,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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) [2023-08-26 07:37:34,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:37:34,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 156 [2023-08-26 07:37:34,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:37:34,565 INFO L124 PetriNetUnfolderBase]: 61/184 cut-off events. [2023-08-26 07:37:34,565 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-08-26 07:37:34,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426 conditions, 184 events. 61/184 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 722 event pairs, 38 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 414. Up to 148 conditions per place. [2023-08-26 07:37:34,566 INFO L140 encePairwiseOnDemand]: 152/156 looper letters, 23 selfloop transitions, 4 changer transitions 8/38 dead transitions. [2023-08-26 07:37:34,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 38 transitions, 189 flow [2023-08-26 07:37:34,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:37:34,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:37:34,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 255 transitions. [2023-08-26 07:37:34,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5448717948717948 [2023-08-26 07:37:34,569 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 255 transitions. [2023-08-26 07:37:34,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 255 transitions. [2023-08-26 07:37:34,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:37:34,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 255 transitions. [2023-08-26 07:37:34,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 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) [2023-08-26 07:37:34,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 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) [2023-08-26 07:37:34,572 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 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) [2023-08-26 07:37:34,572 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 91 flow. Second operand 3 states and 255 transitions. [2023-08-26 07:37:34,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 38 transitions, 189 flow [2023-08-26 07:37:34,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 38 transitions, 183 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:37:34,574 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 94 flow [2023-08-26 07:37:34,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2023-08-26 07:37:34,574 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2023-08-26 07:37:34,575 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 94 flow [2023-08-26 07:37:34,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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) [2023-08-26 07:37:34,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:37:34,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:37:34,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 07:37:34,575 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 07:37:34,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:37:34,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1789630626, now seen corresponding path program 1 times [2023-08-26 07:37:34,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:37:34,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478220249] [2023-08-26 07:37:34,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:37:34,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:37:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:37:34,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:37:34,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:37:34,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478220249] [2023-08-26 07:37:34,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478220249] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:37:34,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:37:34,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:37:34,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230632030] [2023-08-26 07:37:34,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:37:34,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:37:34,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:37:34,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:37:34,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-26 07:37:34,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 156 [2023-08-26 07:37:34,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 94 flow. Second operand has 6 states, 6 states have (on average 59.166666666666664) internal successors, (355), 6 states have internal predecessors, (355), 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) [2023-08-26 07:37:34,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:37:34,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 156 [2023-08-26 07:37:34,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:37:34,785 INFO L124 PetriNetUnfolderBase]: 13/59 cut-off events. [2023-08-26 07:37:34,786 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-08-26 07:37:34,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 59 events. 13/59 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 108 event pairs, 4 based on Foata normal form. 4/62 useless extension candidates. Maximal degree in co-relation 135. Up to 39 conditions per place. [2023-08-26 07:37:34,788 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2023-08-26 07:37:34,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 24 transitions, 120 flow [2023-08-26 07:37:34,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 07:37:34,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 07:37:34,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 252 transitions. [2023-08-26 07:37:34,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40384615384615385 [2023-08-26 07:37:34,790 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 252 transitions. [2023-08-26 07:37:34,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 252 transitions. [2023-08-26 07:37:34,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:37:34,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 252 transitions. [2023-08-26 07:37:34,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 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) [2023-08-26 07:37:34,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 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) [2023-08-26 07:37:34,793 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 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) [2023-08-26 07:37:34,793 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 94 flow. Second operand 4 states and 252 transitions. [2023-08-26 07:37:34,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 24 transitions, 120 flow [2023-08-26 07:37:34,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 24 transitions, 104 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-26 07:37:34,794 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2023-08-26 07:37:34,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2023-08-26 07:37:34,796 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2023-08-26 07:37:34,797 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2023-08-26 07:37:34,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 59.166666666666664) internal successors, (355), 6 states have internal predecessors, (355), 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) [2023-08-26 07:37:34,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 7 remaining) [2023-08-26 07:37:34,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (5 of 7 remaining) [2023-08-26 07:37:34,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-08-26 07:37:34,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2023-08-26 07:37:34,802 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2023-08-26 07:37:34,802 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2023-08-26 07:37:34,802 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2023-08-26 07:37:34,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 07:37:34,802 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-26 07:37:34,807 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 07:37:34,807 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 07:37:34,810 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 07:37:34 BasicIcfg [2023-08-26 07:37:34,810 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 07:37:34,812 INFO L158 Benchmark]: Toolchain (without parser) took 5118.29ms. Allocated memory was 417.3MB in the beginning and 566.2MB in the end (delta: 148.9MB). Free memory was 374.5MB in the beginning and 537.9MB in the end (delta: -163.5MB). Peak memory consumption was 224.3MB. Max. memory is 16.0GB. [2023-08-26 07:37:34,816 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 417.3MB. Free memory was 395.1MB in the beginning and 394.9MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 07:37:34,816 INFO L158 Benchmark]: CACSL2BoogieTranslator took 453.98ms. Allocated memory is still 417.3MB. Free memory was 374.2MB in the beginning and 354.3MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-26 07:37:34,817 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.79ms. Allocated memory is still 417.3MB. Free memory was 354.3MB in the beginning and 352.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 07:37:34,817 INFO L158 Benchmark]: Boogie Preprocessor took 27.98ms. Allocated memory is still 417.3MB. Free memory was 352.2MB in the beginning and 351.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 07:37:34,817 INFO L158 Benchmark]: RCFGBuilder took 309.04ms. Allocated memory is still 417.3MB. Free memory was 351.2MB in the beginning and 336.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-26 07:37:34,818 INFO L158 Benchmark]: TraceAbstraction took 4261.41ms. Allocated memory was 417.3MB in the beginning and 566.2MB in the end (delta: 148.9MB). Free memory was 335.4MB in the beginning and 537.9MB in the end (delta: -202.5MB). Peak memory consumption was 184.4MB. Max. memory is 16.0GB. [2023-08-26 07:37:34,819 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 417.3MB. Free memory was 395.1MB in the beginning and 394.9MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 453.98ms. Allocated memory is still 417.3MB. Free memory was 374.2MB in the beginning and 354.3MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 60.79ms. Allocated memory is still 417.3MB. Free memory was 354.3MB in the beginning and 352.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.98ms. Allocated memory is still 417.3MB. Free memory was 352.2MB in the beginning and 351.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 309.04ms. Allocated memory is still 417.3MB. Free memory was 351.2MB in the beginning and 336.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 4261.41ms. Allocated memory was 417.3MB in the beginning and 566.2MB in the end (delta: 148.9MB). Free memory was 335.4MB in the beginning and 537.9MB in the end (delta: -202.5MB). Peak memory consumption was 184.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.8s, 90 PlacesBefore, 30 PlacesAfterwards, 88 TransitionsBefore, 27 TransitionsAfterwards, 1302 CoEnabledTransitionPairs, 7 FixpointIterations, 34 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 67 TotalNumberOfCompositions, 5081 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1926, independent: 1608, independent conditional: 0, independent unconditional: 1608, dependent: 318, dependent conditional: 0, dependent unconditional: 318, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 697, independent: 649, independent conditional: 0, independent unconditional: 649, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1926, independent: 959, independent conditional: 0, independent unconditional: 959, dependent: 270, dependent conditional: 0, dependent unconditional: 270, unknown: 697, unknown conditional: 0, unknown unconditional: 697] , Statistics on independence cache: Total cache size (in pairs): 93, Positive cache size: 68, Positive conditional cache size: 0, Positive unconditional cache size: 68, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 700]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 688]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 690]: there are no data races For all program executions holds that there are no data races at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 111 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: 4.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 64 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 64 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 261 IncrementalHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 12 mSDtfsCounter, 261 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=3, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 264 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 07:37:34,837 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...