/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/03-practical_08-nonterm1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 06:55:34,939 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 06:55:34,974 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 06:55:34,977 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 06:55:34,978 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 06:55:34,992 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 06:55:34,992 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 06:55:34,992 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 06:55:34,993 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 06:55:34,993 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 06:55:34,993 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 06:55:34,994 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 06:55:34,994 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 06:55:34,994 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 06:55:34,994 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 06:55:34,995 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 06:55:34,995 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 06:55:34,995 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 06:55:34,995 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 06:55:34,996 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 06:55:34,996 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 06:55:34,996 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 06:55:34,996 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 06:55:34,997 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 06:55:34,997 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 06:55:34,997 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 06:55:34,997 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 06:55:34,997 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 06:55:34,998 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 06:55:34,998 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 06:55:34,998 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 06:55:34,998 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 06:55:34,998 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 06:55:34,999 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 06:55:34,999 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 06:55:34,999 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 06:55:35,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 06:55:35,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 06:55:35,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 06:55:35,263 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 06:55:35,263 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 06:55:35,264 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/03-practical_08-nonterm1.i [2023-08-26 06:55:36,389 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 06:55:36,656 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 06:55:36,656 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/03-practical_08-nonterm1.i [2023-08-26 06:55:36,671 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c8de508c/565cf6f9068a4f79b9f964b9bd80951e/FLAG2d95c8c22 [2023-08-26 06:55:36,685 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c8de508c/565cf6f9068a4f79b9f964b9bd80951e [2023-08-26 06:55:36,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 06:55:36,688 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 06:55:36,689 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 06:55:36,689 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 06:55:36,691 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 06:55:36,691 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:55:36" (1/1) ... [2023-08-26 06:55:36,692 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb57891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:55:36, skipping insertion in model container [2023-08-26 06:55:36,692 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:55:36" (1/1) ... [2023-08-26 06:55:36,743 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 06:55:36,995 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 06:55:37,008 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 06:55:37,030 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-26 06:55:37,035 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-26 06:55:37,039 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [737] [2023-08-26 06:55:37,051 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 06:55:37,096 INFO L206 MainTranslator]: Completed translation [2023-08-26 06:55:37,098 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:55:37 WrapperNode [2023-08-26 06:55:37,098 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 06:55:37,099 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 06:55:37,099 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 06:55:37,099 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 06:55:37,103 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:55:37" (1/1) ... [2023-08-26 06:55:37,127 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:55:37" (1/1) ... [2023-08-26 06:55:37,141 INFO L138 Inliner]: procedures = 264, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 89 [2023-08-26 06:55:37,142 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 06:55:37,142 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 06:55:37,142 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 06:55:37,143 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 06:55:37,149 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:55:37" (1/1) ... [2023-08-26 06:55:37,149 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:55:37" (1/1) ... [2023-08-26 06:55:37,151 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:55:37" (1/1) ... [2023-08-26 06:55:37,151 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:55:37" (1/1) ... [2023-08-26 06:55:37,156 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:55:37" (1/1) ... [2023-08-26 06:55:37,158 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:55:37" (1/1) ... [2023-08-26 06:55:37,159 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:55:37" (1/1) ... [2023-08-26 06:55:37,159 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:55:37" (1/1) ... [2023-08-26 06:55:37,161 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 06:55:37,162 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 06:55:37,162 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 06:55:37,162 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 06:55:37,162 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:55:37" (1/1) ... [2023-08-26 06:55:37,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 06:55:37,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:55:37,210 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 06:55:37,228 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 06:55:37,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 06:55:37,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 06:55:37,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 06:55:37,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 06:55:37,241 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 06:55:37,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 06:55:37,241 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 06:55:37,241 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 06:55:37,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 06:55:37,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 06:55:37,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 06:55:37,242 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 06:55:37,328 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 06:55:37,330 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 06:55:37,484 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 06:55:37,489 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 06:55:37,489 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-26 06:55:37,490 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:55:37 BoogieIcfgContainer [2023-08-26 06:55:37,490 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 06:55:37,492 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 06:55:37,492 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 06:55:37,494 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 06:55:37,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 06:55:36" (1/3) ... [2023-08-26 06:55:37,495 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2148af92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:55:37, skipping insertion in model container [2023-08-26 06:55:37,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:55:37" (2/3) ... [2023-08-26 06:55:37,495 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2148af92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:55:37, skipping insertion in model container [2023-08-26 06:55:37,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:55:37" (3/3) ... [2023-08-26 06:55:37,496 INFO L112 eAbstractionObserver]: Analyzing ICFG 03-practical_08-nonterm1.i [2023-08-26 06:55:37,508 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 06:55:37,508 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-26 06:55:37,508 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 06:55:37,548 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 06:55:37,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 96 transitions, 200 flow [2023-08-26 06:55:37,602 INFO L124 PetriNetUnfolderBase]: 2/95 cut-off events. [2023-08-26 06:55:37,602 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 06:55:37,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 95 events. 2/95 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2023-08-26 06:55:37,606 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 96 transitions, 200 flow [2023-08-26 06:55:37,608 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 89 transitions, 184 flow [2023-08-26 06:55:37,611 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 06:55:37,616 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 89 transitions, 184 flow [2023-08-26 06:55:37,618 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 89 transitions, 184 flow [2023-08-26 06:55:37,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 89 transitions, 184 flow [2023-08-26 06:55:37,633 INFO L124 PetriNetUnfolderBase]: 2/89 cut-off events. [2023-08-26 06:55:37,633 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 06:55:37,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 89 events. 2/89 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 60 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2023-08-26 06:55:37,635 INFO L119 LiptonReduction]: Number of co-enabled transitions 1596 [2023-08-26 06:55:39,277 INFO L134 LiptonReduction]: Checked pairs total: 6041 [2023-08-26 06:55:39,278 INFO L136 LiptonReduction]: Total number of compositions: 59 [2023-08-26 06:55:39,313 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 06:55:39,317 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;@4caadac4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 06:55:39,317 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-26 06:55:39,319 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 06:55:39,319 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-26 06:55:39,320 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 06:55:39,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:55:39,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 06:55:39,320 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2023-08-26 06:55:39,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:55:39,324 INFO L85 PathProgramCache]: Analyzing trace with hash 313090812, now seen corresponding path program 1 times [2023-08-26 06:55:39,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:55:39,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467228600] [2023-08-26 06:55:39,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:55:39,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:55:39,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:55:39,514 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 06:55:39,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:55:39,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467228600] [2023-08-26 06:55:39,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467228600] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:55:39,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:55:39,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 06:55:39,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086775203] [2023-08-26 06:55:39,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:55:39,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 06:55:39,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:55:39,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 06:55:39,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 06:55:39,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 155 [2023-08-26 06:55:39,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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 06:55:39,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:55:39,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 155 [2023-08-26 06:55:39,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:55:39,685 INFO L124 PetriNetUnfolderBase]: 153/358 cut-off events. [2023-08-26 06:55:39,685 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 06:55:39,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 694 conditions, 358 events. 153/358 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1519 event pairs, 63 based on Foata normal form. 0/297 useless extension candidates. Maximal degree in co-relation 685. Up to 202 conditions per place. [2023-08-26 06:55:39,688 INFO L140 encePairwiseOnDemand]: 141/155 looper letters, 40 selfloop transitions, 9 changer transitions 0/52 dead transitions. [2023-08-26 06:55:39,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 52 transitions, 205 flow [2023-08-26 06:55:39,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 06:55:39,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 06:55:39,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 269 transitions. [2023-08-26 06:55:39,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.578494623655914 [2023-08-26 06:55:39,704 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 269 transitions. [2023-08-26 06:55:39,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 269 transitions. [2023-08-26 06:55:39,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:55:39,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 269 transitions. [2023-08-26 06:55:39,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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 06:55:39,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 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 06:55:39,716 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 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 06:55:39,717 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 74 flow. Second operand 3 states and 269 transitions. [2023-08-26 06:55:39,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 52 transitions, 205 flow [2023-08-26 06:55:39,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 52 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 06:55:39,721 INFO L231 Difference]: Finished difference. Result has 36 places, 39 transitions, 140 flow [2023-08-26 06:55:39,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=36, PETRI_TRANSITIONS=39} [2023-08-26 06:55:39,727 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2023-08-26 06:55:39,727 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 39 transitions, 140 flow [2023-08-26 06:55:39,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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 06:55:39,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:55:39,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:55:39,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 06:55:39,728 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2023-08-26 06:55:39,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:55:39,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1380350035, now seen corresponding path program 1 times [2023-08-26 06:55:39,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:55:39,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720231993] [2023-08-26 06:55:39,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:55:39,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:55:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:55:39,792 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 06:55:39,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:55:39,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720231993] [2023-08-26 06:55:39,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720231993] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:55:39,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:55:39,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 06:55:39,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973848972] [2023-08-26 06:55:39,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:55:39,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 06:55:39,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:55:39,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 06:55:39,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 06:55:39,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 155 [2023-08-26 06:55:39,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 39 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 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 06:55:39,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:55:39,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 155 [2023-08-26 06:55:39,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:55:39,861 INFO L124 PetriNetUnfolderBase]: 150/348 cut-off events. [2023-08-26 06:55:39,861 INFO L125 PetriNetUnfolderBase]: For 176/178 co-relation queries the response was YES. [2023-08-26 06:55:39,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 895 conditions, 348 events. 150/348 cut-off events. For 176/178 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1431 event pairs, 86 based on Foata normal form. 0/307 useless extension candidates. Maximal degree in co-relation 885. Up to 309 conditions per place. [2023-08-26 06:55:39,863 INFO L140 encePairwiseOnDemand]: 150/155 looper letters, 40 selfloop transitions, 6 changer transitions 0/49 dead transitions. [2023-08-26 06:55:39,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 49 transitions, 268 flow [2023-08-26 06:55:39,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 06:55:39,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 06:55:39,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-08-26 06:55:39,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524731182795699 [2023-08-26 06:55:39,865 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-08-26 06:55:39,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-08-26 06:55:39,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:55:39,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-08-26 06:55:39,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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 06:55:39,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 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 06:55:39,867 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 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 06:55:39,868 INFO L175 Difference]: Start difference. First operand has 36 places, 39 transitions, 140 flow. Second operand 3 states and 244 transitions. [2023-08-26 06:55:39,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 49 transitions, 268 flow [2023-08-26 06:55:39,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 49 transitions, 244 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 06:55:39,870 INFO L231 Difference]: Finished difference. Result has 37 places, 43 transitions, 164 flow [2023-08-26 06:55:39,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=37, PETRI_TRANSITIONS=43} [2023-08-26 06:55:39,870 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2023-08-26 06:55:39,870 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 43 transitions, 164 flow [2023-08-26 06:55:39,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 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 06:55:39,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:55:39,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:55:39,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 06:55:39,871 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2023-08-26 06:55:39,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:55:39,872 INFO L85 PathProgramCache]: Analyzing trace with hash -617996111, now seen corresponding path program 1 times [2023-08-26 06:55:39,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:55:39,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934525637] [2023-08-26 06:55:39,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:55:39,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:55:39,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:55:39,896 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 06:55:39,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:55:39,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934525637] [2023-08-26 06:55:39,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934525637] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:55:39,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:55:39,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 06:55:39,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420346648] [2023-08-26 06:55:39,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:55:39,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 06:55:39,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:55:39,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 06:55:39,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 06:55:39,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 155 [2023-08-26 06:55:39,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 43 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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 06:55:39,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:55:39,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 155 [2023-08-26 06:55:39,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:55:39,951 INFO L124 PetriNetUnfolderBase]: 162/376 cut-off events. [2023-08-26 06:55:39,952 INFO L125 PetriNetUnfolderBase]: For 174/176 co-relation queries the response was YES. [2023-08-26 06:55:39,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 957 conditions, 376 events. 162/376 cut-off events. For 174/176 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1596 event pairs, 57 based on Foata normal form. 0/332 useless extension candidates. Maximal degree in co-relation 946. Up to 262 conditions per place. [2023-08-26 06:55:39,953 INFO L140 encePairwiseOnDemand]: 147/155 looper letters, 50 selfloop transitions, 12 changer transitions 2/67 dead transitions. [2023-08-26 06:55:39,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 67 transitions, 377 flow [2023-08-26 06:55:39,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 06:55:39,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 06:55:39,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 251 transitions. [2023-08-26 06:55:39,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5397849462365591 [2023-08-26 06:55:39,955 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 251 transitions. [2023-08-26 06:55:39,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 251 transitions. [2023-08-26 06:55:39,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:55:39,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 251 transitions. [2023-08-26 06:55:39,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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 06:55:39,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 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 06:55:39,957 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 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 06:55:39,957 INFO L175 Difference]: Start difference. First operand has 37 places, 43 transitions, 164 flow. Second operand 3 states and 251 transitions. [2023-08-26 06:55:39,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 67 transitions, 377 flow [2023-08-26 06:55:39,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 67 transitions, 368 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 06:55:39,959 INFO L231 Difference]: Finished difference. Result has 40 places, 51 transitions, 256 flow [2023-08-26 06:55:39,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=40, PETRI_TRANSITIONS=51} [2023-08-26 06:55:39,959 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 3 predicate places. [2023-08-26 06:55:39,959 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 51 transitions, 256 flow [2023-08-26 06:55:39,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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 06:55:39,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:55:39,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:55:39,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 06:55:39,960 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2023-08-26 06:55:39,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:55:39,960 INFO L85 PathProgramCache]: Analyzing trace with hash 337721828, now seen corresponding path program 1 times [2023-08-26 06:55:39,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:55:39,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149743220] [2023-08-26 06:55:39,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:55:39,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:55:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:55:40,021 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 06:55:40,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:55:40,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149743220] [2023-08-26 06:55:40,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149743220] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:55:40,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:55:40,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 06:55:40,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685822768] [2023-08-26 06:55:40,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:55:40,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 06:55:40,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:55:40,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 06:55:40,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 06:55:40,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 155 [2023-08-26 06:55:40,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 51 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 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 06:55:40,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:55:40,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 155 [2023-08-26 06:55:40,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:55:40,054 INFO L124 PetriNetUnfolderBase]: 49/160 cut-off events. [2023-08-26 06:55:40,054 INFO L125 PetriNetUnfolderBase]: For 201/207 co-relation queries the response was YES. [2023-08-26 06:55:40,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 442 conditions, 160 events. 49/160 cut-off events. For 201/207 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 608 event pairs, 6 based on Foata normal form. 7/161 useless extension candidates. Maximal degree in co-relation 430. Up to 49 conditions per place. [2023-08-26 06:55:40,055 INFO L140 encePairwiseOnDemand]: 150/155 looper letters, 13 selfloop transitions, 6 changer transitions 7/48 dead transitions. [2023-08-26 06:55:40,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 48 transitions, 266 flow [2023-08-26 06:55:40,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 06:55:40,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 06:55:40,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2023-08-26 06:55:40,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.567741935483871 [2023-08-26 06:55:40,056 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 264 transitions. [2023-08-26 06:55:40,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 264 transitions. [2023-08-26 06:55:40,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:55:40,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 264 transitions. [2023-08-26 06:55:40,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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 06:55:40,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 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 06:55:40,058 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 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 06:55:40,058 INFO L175 Difference]: Start difference. First operand has 40 places, 51 transitions, 256 flow. Second operand 3 states and 264 transitions. [2023-08-26 06:55:40,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 48 transitions, 266 flow [2023-08-26 06:55:40,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 48 transitions, 226 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-26 06:55:40,060 INFO L231 Difference]: Finished difference. Result has 36 places, 39 transitions, 156 flow [2023-08-26 06:55:40,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=36, PETRI_TRANSITIONS=39} [2023-08-26 06:55:40,061 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2023-08-26 06:55:40,061 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 39 transitions, 156 flow [2023-08-26 06:55:40,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 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 06:55:40,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:55:40,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:55:40,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 06:55:40,062 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2023-08-26 06:55:40,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:55:40,062 INFO L85 PathProgramCache]: Analyzing trace with hash 527591835, now seen corresponding path program 1 times [2023-08-26 06:55:40,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:55:40,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764676412] [2023-08-26 06:55:40,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:55:40,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:55:40,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:55:40,108 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 06:55:40,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:55:40,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764676412] [2023-08-26 06:55:40,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764676412] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:55:40,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:55:40,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 06:55:40,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939917334] [2023-08-26 06:55:40,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:55:40,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 06:55:40,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:55:40,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 06:55:40,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 06:55:40,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 155 [2023-08-26 06:55:40,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 39 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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 06:55:40,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:55:40,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 155 [2023-08-26 06:55:40,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:55:40,154 INFO L124 PetriNetUnfolderBase]: 79/204 cut-off events. [2023-08-26 06:55:40,155 INFO L125 PetriNetUnfolderBase]: For 109/109 co-relation queries the response was YES. [2023-08-26 06:55:40,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 204 events. 79/204 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 740 event pairs, 30 based on Foata normal form. 0/187 useless extension candidates. Maximal degree in co-relation 575. Up to 172 conditions per place. [2023-08-26 06:55:40,156 INFO L140 encePairwiseOnDemand]: 150/155 looper letters, 31 selfloop transitions, 7 changer transitions 9/50 dead transitions. [2023-08-26 06:55:40,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 50 transitions, 300 flow [2023-08-26 06:55:40,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 06:55:40,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 06:55:40,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 239 transitions. [2023-08-26 06:55:40,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513978494623656 [2023-08-26 06:55:40,161 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 239 transitions. [2023-08-26 06:55:40,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 239 transitions. [2023-08-26 06:55:40,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:55:40,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 239 transitions. [2023-08-26 06:55:40,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 06:55:40,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 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 06:55:40,162 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 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 06:55:40,162 INFO L175 Difference]: Start difference. First operand has 36 places, 39 transitions, 156 flow. Second operand 3 states and 239 transitions. [2023-08-26 06:55:40,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 50 transitions, 300 flow [2023-08-26 06:55:40,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 50 transitions, 300 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 06:55:40,164 INFO L231 Difference]: Finished difference. Result has 39 places, 38 transitions, 177 flow [2023-08-26 06:55:40,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=39, PETRI_TRANSITIONS=38} [2023-08-26 06:55:40,167 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places. [2023-08-26 06:55:40,167 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 38 transitions, 177 flow [2023-08-26 06:55:40,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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 06:55:40,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:55:40,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:55:40,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 06:55:40,167 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2023-08-26 06:55:40,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:55:40,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1124159717, now seen corresponding path program 1 times [2023-08-26 06:55:40,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:55:40,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427049306] [2023-08-26 06:55:40,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:55:40,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:55:40,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 06:55:40,188 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 06:55:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 06:55:40,210 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 06:55:40,210 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 06:55:40,211 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 13 remaining) [2023-08-26 06:55:40,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2023-08-26 06:55:40,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2023-08-26 06:55:40,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2023-08-26 06:55:40,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2023-08-26 06:55:40,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 13 remaining) [2023-08-26 06:55:40,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2023-08-26 06:55:40,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2023-08-26 06:55:40,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2023-08-26 06:55:40,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2023-08-26 06:55:40,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2023-08-26 06:55:40,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2023-08-26 06:55:40,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2023-08-26 06:55:40,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 06:55:40,214 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-26 06:55:40,217 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 06:55:40,217 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 06:55:40,235 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 06:55:40 BasicIcfg [2023-08-26 06:55:40,236 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 06:55:40,236 INFO L158 Benchmark]: Toolchain (without parser) took 3547.89ms. Allocated memory was 392.2MB in the beginning and 555.7MB in the end (delta: 163.6MB). Free memory was 367.3MB in the beginning and 401.2MB in the end (delta: -33.9MB). Peak memory consumption was 133.2MB. Max. memory is 16.0GB. [2023-08-26 06:55:40,236 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 392.2MB. Free memory is still 368.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 06:55:40,236 INFO L158 Benchmark]: CACSL2BoogieTranslator took 409.11ms. Allocated memory is still 392.2MB. Free memory was 367.0MB in the beginning and 339.4MB in the end (delta: 27.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-08-26 06:55:40,237 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.03ms. Allocated memory is still 392.2MB. Free memory was 339.4MB in the beginning and 337.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 06:55:40,237 INFO L158 Benchmark]: Boogie Preprocessor took 18.65ms. Allocated memory is still 392.2MB. Free memory was 337.0MB in the beginning and 335.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 06:55:40,237 INFO L158 Benchmark]: RCFGBuilder took 328.76ms. Allocated memory is still 392.2MB. Free memory was 335.2MB in the beginning and 366.8MB in the end (delta: -31.6MB). Peak memory consumption was 18.1MB. Max. memory is 16.0GB. [2023-08-26 06:55:40,237 INFO L158 Benchmark]: TraceAbstraction took 2743.23ms. Allocated memory was 392.2MB in the beginning and 555.7MB in the end (delta: 163.6MB). Free memory was 366.2MB in the beginning and 401.2MB in the end (delta: -34.9MB). Peak memory consumption was 129.7MB. Max. memory is 16.0GB. [2023-08-26 06:55:40,239 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 392.2MB. Free memory is still 368.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 409.11ms. Allocated memory is still 392.2MB. Free memory was 367.0MB in the beginning and 339.4MB in the end (delta: 27.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 43.03ms. Allocated memory is still 392.2MB. Free memory was 339.4MB in the beginning and 337.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 18.65ms. Allocated memory is still 392.2MB. Free memory was 337.0MB in the beginning and 335.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 328.76ms. Allocated memory is still 392.2MB. Free memory was 335.2MB in the beginning and 366.8MB in the end (delta: -31.6MB). Peak memory consumption was 18.1MB. Max. memory is 16.0GB. * TraceAbstraction took 2743.23ms. Allocated memory was 392.2MB in the beginning and 555.7MB in the end (delta: 163.6MB). Free memory was 366.2MB in the beginning and 401.2MB in the end (delta: -34.9MB). Peak memory consumption was 129.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 245]: Unsoundness Warning unspecified type, defaulting to int C: short [245] - GenericResultAtLocation [Line: 245]: Unsoundness Warning unspecified type, defaulting to int C: short [245] - GenericResultAtLocation [Line: 737]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [737] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 91 PlacesBefore, 37 PlacesAfterwards, 89 TransitionsBefore, 34 TransitionsAfterwards, 1596 CoEnabledTransitionPairs, 6 FixpointIterations, 26 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 59 TotalNumberOfCompositions, 6041 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2036, independent: 1700, independent conditional: 0, independent unconditional: 1700, dependent: 336, dependent conditional: 0, dependent unconditional: 336, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 797, independent: 749, independent conditional: 0, independent unconditional: 749, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2036, independent: 951, independent conditional: 0, independent unconditional: 951, dependent: 288, dependent conditional: 0, dependent unconditional: 288, unknown: 797, unknown conditional: 0, unknown unconditional: 797] , Statistics on independence cache: Total cache size (in pairs): 103, Positive cache size: 73, Positive conditional cache size: 0, Positive unconditional cache size: 73, Negative cache size: 30, Negative conditional cache size: 0, Negative unconditional cache size: 30, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - DataRaceFoundResult [Line: 924]: Data race detected Data race detected The following path leads to a data race: [L918] 0 int myglobal; [L919] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L920] 0 pthread_mutex_t mutex2 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L936] 0 pthread_t id; [L937] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [id={3:0}, mutex1={1:0}, mutex2={2:0}, myglobal=0, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1] [L930] EXPR 1 myglobal+1 VAL [arg={0:0}, arg={0:0}, mutex1={1:0}, mutex2={2:0}, myglobal=0] [L930] 1 myglobal=myglobal+1 VAL [arg={0:0}, arg={0:0}, mutex1={1:0}, mutex2={2:0}, myglobal=1] [L932] CALL 1 fun() [L922] 1 int i = __VERIFIER_nondet_int(); VAL [__VERIFIER_nondet_int()=0, i=0, mutex1={1:0}, mutex2={2:0}, myglobal=1] [L939] EXPR 0 myglobal+1 VAL [id={3:0}, mutex1={1:0}, mutex2={2:0}, myglobal=1] [L924] 1 myglobal+1 VAL [i=0, mutex1={1:0}, mutex2={2:0}, myglobal=1] [L939] 0 myglobal=myglobal+1 VAL [id={3:0}, mutex1={1:0}, mutex2={2:0}, myglobal=2, myglobal=myglobal+1=25] [L924] 1 myglobal+1 VAL [i=0, mutex1={1:0}, mutex2={2:0}, myglobal=2] Now there is a data race on ~myglobal~0 between C: myglobal=myglobal+1 [939] and C: myglobal+1 [924] - UnprovableResult [Line: 939]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 939]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 941]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 942]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 937]: 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: 930]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 930]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 924]: 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, 133 locations, 13 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: 2.6s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 49 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 49 mSDsluCounter, 49 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 235 IncrementalHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 49 mSDtfsCounter, 235 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=256occurred in iteration=3, InterpolantAutomatonStates: 15, 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, 0.2s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 55 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 RESULT: Ultimate proved your program to be incorrect! [2023-08-26 06:55:40,279 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...