/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 -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/28-race_reach_01-simple_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 03:57:58,765 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 03:57:58,817 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-25 03:57:58,821 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 03:57:58,821 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 03:57:58,839 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 03:57:58,840 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 03:57:58,840 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 03:57:58,841 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 03:57:58,844 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 03:57:58,844 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 03:57:58,845 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 03:57:58,845 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 03:57:58,846 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 03:57:58,846 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 03:57:58,846 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 03:57:58,847 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 03:57:58,847 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 03:57:58,847 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 03:57:58,847 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 03:57:58,847 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 03:57:58,848 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 03:57:58,848 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 03:57:58,849 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 03:57:58,849 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 03:57:58,849 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 03:57:58,849 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 03:57:58,849 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 03:57:58,850 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 03:57:58,850 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 03:57:58,851 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 03:57:58,851 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 03:57:58,851 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 03:57:58,851 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 03:57:58,851 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 03:57:58,852 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 03:57:59,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 03:57:59,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 03:57:59,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 03:57:59,168 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 03:57:59,168 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 03:57:59,170 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i [2023-08-25 03:58:00,323 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 03:58:00,624 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 03:58:00,625 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i [2023-08-25 03:58:00,639 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3da64dc82/b84986a1ff3f43deaa8cae7ba2cb5d88/FLAGff58f2add [2023-08-25 03:58:00,650 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3da64dc82/b84986a1ff3f43deaa8cae7ba2cb5d88 [2023-08-25 03:58:00,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 03:58:00,654 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 03:58:00,654 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 03:58:00,655 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 03:58:00,657 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 03:58:00,658 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 03:58:00" (1/1) ... [2023-08-25 03:58:00,659 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33203158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:58:00, skipping insertion in model container [2023-08-25 03:58:00,659 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 03:58:00" (1/1) ... [2023-08-25 03:58:00,698 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 03:58:01,008 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 03:58:01,025 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 03:58:01,054 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 03:58:01,055 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 03:58:01,088 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 03:58:01,124 INFO L206 MainTranslator]: Completed translation [2023-08-25 03:58:01,125 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:58:01 WrapperNode [2023-08-25 03:58:01,126 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 03:58:01,127 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 03:58:01,127 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 03:58:01,127 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 03:58:01,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:58:01" (1/1) ... [2023-08-25 03:58:01,160 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:58:01" (1/1) ... [2023-08-25 03:58:01,190 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 91 [2023-08-25 03:58:01,190 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 03:58:01,191 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 03:58:01,192 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 03:58:01,192 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 03:58:01,200 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:58:01" (1/1) ... [2023-08-25 03:58:01,200 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:58:01" (1/1) ... [2023-08-25 03:58:01,218 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:58:01" (1/1) ... [2023-08-25 03:58:01,218 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:58:01" (1/1) ... [2023-08-25 03:58:01,223 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:58:01" (1/1) ... [2023-08-25 03:58:01,226 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:58:01" (1/1) ... [2023-08-25 03:58:01,228 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:58:01" (1/1) ... [2023-08-25 03:58:01,229 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:58:01" (1/1) ... [2023-08-25 03:58:01,232 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 03:58:01,248 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 03:58:01,249 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 03:58:01,249 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 03:58:01,250 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:58:01" (1/1) ... [2023-08-25 03:58:01,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 03:58:01,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 03:58:01,278 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-25 03:58:01,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-25 03:58:01,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 03:58:01,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 03:58:01,314 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 03:58:01,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 03:58:01,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 03:58:01,315 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-25 03:58:01,315 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-25 03:58:01,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 03:58:01,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 03:58:01,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 03:58:01,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 03:58:01,317 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 03:58:01,461 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 03:58:01,463 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 03:58:01,727 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 03:58:01,734 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 03:58:01,734 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-25 03:58:01,741 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 03:58:01 BoogieIcfgContainer [2023-08-25 03:58:01,741 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 03:58:01,743 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 03:58:01,743 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 03:58:01,746 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 03:58:01,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 03:58:00" (1/3) ... [2023-08-25 03:58:01,747 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23aae246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 03:58:01, skipping insertion in model container [2023-08-25 03:58:01,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:58:01" (2/3) ... [2023-08-25 03:58:01,747 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23aae246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 03:58:01, skipping insertion in model container [2023-08-25 03:58:01,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 03:58:01" (3/3) ... [2023-08-25 03:58:01,749 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_01-simple_racing.i [2023-08-25 03:58:01,765 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 03:58:01,765 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-25 03:58:01,765 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 03:58:01,863 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-25 03:58:01,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 137 transitions, 282 flow [2023-08-25 03:58:01,991 INFO L124 PetriNetUnfolderBase]: 19/185 cut-off events. [2023-08-25 03:58:01,991 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 03:58:02,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 185 events. 19/185 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 541 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 97. Up to 4 conditions per place. [2023-08-25 03:58:02,004 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 137 transitions, 282 flow [2023-08-25 03:58:02,012 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 137 transitions, 282 flow [2023-08-25 03:58:02,017 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 03:58:02,029 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 137 transitions, 282 flow [2023-08-25 03:58:02,033 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 137 transitions, 282 flow [2023-08-25 03:58:02,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 137 transitions, 282 flow [2023-08-25 03:58:02,089 INFO L124 PetriNetUnfolderBase]: 19/185 cut-off events. [2023-08-25 03:58:02,089 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 03:58:02,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 185 events. 19/185 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 541 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 97. Up to 4 conditions per place. [2023-08-25 03:58:02,094 INFO L119 LiptonReduction]: Number of co-enabled transitions 4752 [2023-08-25 03:58:05,412 INFO L134 LiptonReduction]: Checked pairs total: 12732 [2023-08-25 03:58:05,412 INFO L136 LiptonReduction]: Total number of compositions: 109 [2023-08-25 03:58:05,423 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 03:58:05,428 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;@7e9175b1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 03:58:05,428 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-25 03:58:05,432 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 03:58:05,433 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-25 03:58:05,433 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 03:58:05,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:58:05,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-25 03:58:05,434 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 9 more)] === [2023-08-25 03:58:05,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:58:05,438 INFO L85 PathProgramCache]: Analyzing trace with hash 15830063, now seen corresponding path program 1 times [2023-08-25 03:58:05,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:58:05,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288540536] [2023-08-25 03:58:05,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:58:05,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:58:05,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:58:05,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:58:05,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:58:05,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288540536] [2023-08-25 03:58:05,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288540536] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 03:58:05,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 03:58:05,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 03:58:05,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407942098] [2023-08-25 03:58:05,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 03:58:05,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 03:58:05,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:58:05,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 03:58:05,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 03:58:05,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 246 [2023-08-25 03:58:05,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 50 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:05,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:58:05,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 246 [2023-08-25 03:58:05,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:58:05,770 INFO L124 PetriNetUnfolderBase]: 120/350 cut-off events. [2023-08-25 03:58:05,770 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 03:58:05,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 350 events. 120/350 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1574 event pairs, 99 based on Foata normal form. 35/343 useless extension candidates. Maximal degree in co-relation 603. Up to 255 conditions per place. [2023-08-25 03:58:05,773 INFO L140 encePairwiseOnDemand]: 233/246 looper letters, 35 selfloop transitions, 2 changer transitions 2/52 dead transitions. [2023-08-25 03:58:05,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 190 flow [2023-08-25 03:58:05,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 03:58:05,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 03:58:05,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 398 transitions. [2023-08-25 03:58:05,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5392953929539296 [2023-08-25 03:58:05,793 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 398 transitions. [2023-08-25 03:58:05,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 398 transitions. [2023-08-25 03:58:05,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:58:05,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 398 transitions. [2023-08-25 03:58:05,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:05,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:05,808 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:05,809 INFO L175 Difference]: Start difference. First operand has 43 places, 50 transitions, 108 flow. Second operand 3 states and 398 transitions. [2023-08-25 03:58:05,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 190 flow [2023-08-25 03:58:05,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 52 transitions, 190 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 03:58:05,814 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 87 flow [2023-08-25 03:58:05,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2023-08-25 03:58:05,820 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2023-08-25 03:58:05,820 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 87 flow [2023-08-25 03:58:05,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:05,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:58:05,821 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-25 03:58:05,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 03:58:05,822 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 9 more)] === [2023-08-25 03:58:05,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:58:05,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1982779699, now seen corresponding path program 1 times [2023-08-25 03:58:05,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:58:05,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362771693] [2023-08-25 03:58:05,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:58:05,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:58:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 03:58:05,853 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 03:58:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 03:58:05,882 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 03:58:05,882 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 03:58:05,884 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2023-08-25 03:58:05,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2023-08-25 03:58:05,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2023-08-25 03:58:05,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (8 of 12 remaining) [2023-08-25 03:58:05,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2023-08-25 03:58:05,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2023-08-25 03:58:05,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2023-08-25 03:58:05,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2023-08-25 03:58:05,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2023-08-25 03:58:05,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2023-08-25 03:58:05,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2023-08-25 03:58:05,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2023-08-25 03:58:05,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 03:58:05,888 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-25 03:58:05,890 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 03:58:05,890 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-25 03:58:05,910 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 03:58:05,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 183 transitions, 384 flow [2023-08-25 03:58:05,946 INFO L124 PetriNetUnfolderBase]: 34/310 cut-off events. [2023-08-25 03:58:05,946 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-25 03:58:05,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 310 events. 34/310 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1086 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 187. Up to 8 conditions per place. [2023-08-25 03:58:05,949 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 183 transitions, 384 flow [2023-08-25 03:58:05,952 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 168 places, 183 transitions, 384 flow [2023-08-25 03:58:05,952 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 03:58:05,952 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 168 places, 183 transitions, 384 flow [2023-08-25 03:58:05,952 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 168 places, 183 transitions, 384 flow [2023-08-25 03:58:05,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 183 transitions, 384 flow [2023-08-25 03:58:05,984 INFO L124 PetriNetUnfolderBase]: 34/310 cut-off events. [2023-08-25 03:58:05,984 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-25 03:58:05,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 310 events. 34/310 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1086 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 187. Up to 8 conditions per place. [2023-08-25 03:58:05,994 INFO L119 LiptonReduction]: Number of co-enabled transitions 14344 [2023-08-25 03:58:08,995 INFO L134 LiptonReduction]: Checked pairs total: 47912 [2023-08-25 03:58:08,995 INFO L136 LiptonReduction]: Total number of compositions: 122 [2023-08-25 03:58:09,006 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 03:58:09,009 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;@7e9175b1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 03:58:09,009 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-25 03:58:09,012 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 03:58:09,012 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-25 03:58:09,013 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 03:58:09,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:58:09,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-25 03:58:09,014 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 13 more)] === [2023-08-25 03:58:09,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:58:09,019 INFO L85 PathProgramCache]: Analyzing trace with hash 26641109, now seen corresponding path program 1 times [2023-08-25 03:58:09,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:58:09,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234930744] [2023-08-25 03:58:09,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:58:09,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:58:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:58:09,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:58:09,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:58:09,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234930744] [2023-08-25 03:58:09,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234930744] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 03:58:09,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 03:58:09,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 03:58:09,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996418282] [2023-08-25 03:58:09,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 03:58:09,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 03:58:09,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:58:09,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 03:58:09,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 03:58:09,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 305 [2023-08-25 03:58:09,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 87 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:09,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:58:09,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 305 [2023-08-25 03:58:09,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:58:09,581 INFO L124 PetriNetUnfolderBase]: 2472/5303 cut-off events. [2023-08-25 03:58:09,581 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2023-08-25 03:58:09,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9359 conditions, 5303 events. 2472/5303 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 41721 event pairs, 2319 based on Foata normal form. 788/5226 useless extension candidates. Maximal degree in co-relation 6199. Up to 3973 conditions per place. [2023-08-25 03:58:09,616 INFO L140 encePairwiseOnDemand]: 285/305 looper letters, 46 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-08-25 03:58:09,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 81 transitions, 276 flow [2023-08-25 03:58:09,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 03:58:09,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 03:58:09,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 528 transitions. [2023-08-25 03:58:09,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5770491803278689 [2023-08-25 03:58:09,618 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 528 transitions. [2023-08-25 03:58:09,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 528 transitions. [2023-08-25 03:58:09,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:58:09,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 528 transitions. [2023-08-25 03:58:09,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:09,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:09,624 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:09,624 INFO L175 Difference]: Start difference. First operand has 74 places, 87 transitions, 192 flow. Second operand 3 states and 528 transitions. [2023-08-25 03:58:09,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 81 transitions, 276 flow [2023-08-25 03:58:09,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 81 transitions, 276 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 03:58:09,628 INFO L231 Difference]: Finished difference. Result has 75 places, 70 transitions, 168 flow [2023-08-25 03:58:09,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=75, PETRI_TRANSITIONS=70} [2023-08-25 03:58:09,629 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 1 predicate places. [2023-08-25 03:58:09,630 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 70 transitions, 168 flow [2023-08-25 03:58:09,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:09,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:58:09,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 03:58:09,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 03:58:09,634 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 13 more)] === [2023-08-25 03:58:09,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:58:09,635 INFO L85 PathProgramCache]: Analyzing trace with hash 317324616, now seen corresponding path program 1 times [2023-08-25 03:58:09,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:58:09,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36027475] [2023-08-25 03:58:09,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:58:09,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:58:09,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:58:09,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:58:09,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:58:09,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36027475] [2023-08-25 03:58:09,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36027475] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 03:58:09,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 03:58:09,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 03:58:09,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215068607] [2023-08-25 03:58:09,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 03:58:09,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 03:58:09,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:58:09,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 03:58:09,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 03:58:09,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 305 [2023-08-25 03:58:09,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 70 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:09,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:58:09,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 305 [2023-08-25 03:58:09,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:58:11,570 INFO L124 PetriNetUnfolderBase]: 13020/22104 cut-off events. [2023-08-25 03:58:11,570 INFO L125 PetriNetUnfolderBase]: For 1105/1105 co-relation queries the response was YES. [2023-08-25 03:58:11,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44086 conditions, 22104 events. 13020/22104 cut-off events. For 1105/1105 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 165969 event pairs, 4779 based on Foata normal form. 0/17451 useless extension candidates. Maximal degree in co-relation 43970. Up to 11108 conditions per place. [2023-08-25 03:58:11,711 INFO L140 encePairwiseOnDemand]: 286/305 looper letters, 91 selfloop transitions, 14 changer transitions 0/119 dead transitions. [2023-08-25 03:58:11,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 119 transitions, 494 flow [2023-08-25 03:58:11,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 03:58:11,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 03:58:11,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 507 transitions. [2023-08-25 03:58:11,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5540983606557377 [2023-08-25 03:58:11,714 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 507 transitions. [2023-08-25 03:58:11,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 507 transitions. [2023-08-25 03:58:11,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:58:11,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 507 transitions. [2023-08-25 03:58:11,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:11,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:11,718 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:11,718 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 168 flow. Second operand 3 states and 507 transitions. [2023-08-25 03:58:11,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 119 transitions, 494 flow [2023-08-25 03:58:11,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 119 transitions, 491 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 03:58:11,722 INFO L231 Difference]: Finished difference. Result has 78 places, 84 transitions, 288 flow [2023-08-25 03:58:11,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=78, PETRI_TRANSITIONS=84} [2023-08-25 03:58:11,723 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 4 predicate places. [2023-08-25 03:58:11,724 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 84 transitions, 288 flow [2023-08-25 03:58:11,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:11,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:58:11,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 03:58:11,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 03:58:11,725 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 13 more)] === [2023-08-25 03:58:11,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:58:11,725 INFO L85 PathProgramCache]: Analyzing trace with hash 92407594, now seen corresponding path program 1 times [2023-08-25 03:58:11,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:58:11,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987450638] [2023-08-25 03:58:11,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:58:11,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:58:11,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:58:11,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:58:11,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:58:11,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987450638] [2023-08-25 03:58:11,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987450638] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 03:58:11,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416581681] [2023-08-25 03:58:11,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:58:11,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 03:58:11,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 03:58:11,777 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 03:58:11,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-25 03:58:11,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:58:11,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 03:58:11,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 03:58:11,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:58:11,970 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 03:58:11,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:58:12,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416581681] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 03:58:12,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 03:58:12,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-25 03:58:12,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339335710] [2023-08-25 03:58:12,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 03:58:12,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 03:58:12,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:58:12,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 03:58:12,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-25 03:58:12,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 305 [2023-08-25 03:58:12,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 84 transitions, 288 flow. Second operand has 7 states, 7 states have (on average 154.28571428571428) internal successors, (1080), 7 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:12,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:58:12,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 305 [2023-08-25 03:58:12,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:58:12,233 INFO L124 PetriNetUnfolderBase]: 983/2169 cut-off events. [2023-08-25 03:58:12,234 INFO L125 PetriNetUnfolderBase]: For 1111/1138 co-relation queries the response was YES. [2023-08-25 03:58:12,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5135 conditions, 2169 events. 983/2169 cut-off events. For 1111/1138 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 14858 event pairs, 163 based on Foata normal form. 238/2320 useless extension candidates. Maximal degree in co-relation 2503. Up to 1213 conditions per place. [2023-08-25 03:58:12,250 INFO L140 encePairwiseOnDemand]: 302/305 looper letters, 61 selfloop transitions, 3 changer transitions 0/101 dead transitions. [2023-08-25 03:58:12,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 101 transitions, 458 flow [2023-08-25 03:58:12,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 03:58:12,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 03:58:12,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 820 transitions. [2023-08-25 03:58:12,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5377049180327869 [2023-08-25 03:58:12,253 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 820 transitions. [2023-08-25 03:58:12,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 820 transitions. [2023-08-25 03:58:12,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:58:12,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 820 transitions. [2023-08-25 03:58:12,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:12,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:12,259 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:12,259 INFO L175 Difference]: Start difference. First operand has 78 places, 84 transitions, 288 flow. Second operand 5 states and 820 transitions. [2023-08-25 03:58:12,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 101 transitions, 458 flow [2023-08-25 03:58:12,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 101 transitions, 420 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-25 03:58:12,265 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 210 flow [2023-08-25 03:58:12,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=210, PETRI_PLACES=66, PETRI_TRANSITIONS=66} [2023-08-25 03:58:12,266 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -8 predicate places. [2023-08-25 03:58:12,267 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 210 flow [2023-08-25 03:58:12,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 154.28571428571428) internal successors, (1080), 7 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:12,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:58:12,268 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-25 03:58:12,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-25 03:58:12,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 03:58:12,473 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 13 more)] === [2023-08-25 03:58:12,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:58:12,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1718979891, now seen corresponding path program 1 times [2023-08-25 03:58:12,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:58:12,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691195904] [2023-08-25 03:58:12,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:58:12,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:58:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 03:58:12,488 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 03:58:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 03:58:12,504 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 03:58:12,510 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 03:58:12,511 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2023-08-25 03:58:12,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2023-08-25 03:58:12,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2023-08-25 03:58:12,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (12 of 16 remaining) [2023-08-25 03:58:12,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2023-08-25 03:58:12,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2023-08-25 03:58:12,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2023-08-25 03:58:12,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2023-08-25 03:58:12,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2023-08-25 03:58:12,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2023-08-25 03:58:12,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2023-08-25 03:58:12,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2023-08-25 03:58:12,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2023-08-25 03:58:12,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2023-08-25 03:58:12,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2023-08-25 03:58:12,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2023-08-25 03:58:12,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 03:58:12,515 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-25 03:58:12,516 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 03:58:12,516 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-25 03:58:12,547 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-25 03:58:12,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 229 transitions, 488 flow [2023-08-25 03:58:12,619 INFO L124 PetriNetUnfolderBase]: 54/480 cut-off events. [2023-08-25 03:58:12,619 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-25 03:58:12,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 508 conditions, 480 events. 54/480 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1864 event pairs, 1 based on Foata normal form. 0/394 useless extension candidates. Maximal degree in co-relation 318. Up to 16 conditions per place. [2023-08-25 03:58:12,624 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 229 transitions, 488 flow [2023-08-25 03:58:12,628 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 229 transitions, 488 flow [2023-08-25 03:58:12,628 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 03:58:12,629 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 229 transitions, 488 flow [2023-08-25 03:58:12,629 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 229 transitions, 488 flow [2023-08-25 03:58:12,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 229 transitions, 488 flow [2023-08-25 03:58:12,721 INFO L124 PetriNetUnfolderBase]: 54/480 cut-off events. [2023-08-25 03:58:12,721 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-25 03:58:12,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 508 conditions, 480 events. 54/480 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1864 event pairs, 1 based on Foata normal form. 0/394 useless extension candidates. Maximal degree in co-relation 318. Up to 16 conditions per place. [2023-08-25 03:58:12,743 INFO L119 LiptonReduction]: Number of co-enabled transitions 27720 [2023-08-25 03:58:15,870 INFO L134 LiptonReduction]: Checked pairs total: 101705 [2023-08-25 03:58:15,870 INFO L136 LiptonReduction]: Total number of compositions: 140 [2023-08-25 03:58:15,872 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 03:58:15,872 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;@7e9175b1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 03:58:15,872 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-25 03:58:15,874 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 03:58:15,874 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-25 03:58:15,874 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 03:58:15,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:58:15,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-25 03:58:15,874 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 17 more)] === [2023-08-25 03:58:15,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:58:15,875 INFO L85 PathProgramCache]: Analyzing trace with hash 39415386, now seen corresponding path program 1 times [2023-08-25 03:58:15,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:58:15,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886181041] [2023-08-25 03:58:15,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:58:15,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:58:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:58:15,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:58:15,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:58:15,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886181041] [2023-08-25 03:58:15,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886181041] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 03:58:15,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 03:58:15,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 03:58:15,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411593173] [2023-08-25 03:58:15,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 03:58:15,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 03:58:15,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:58:15,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 03:58:15,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 03:58:15,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 369 [2023-08-25 03:58:15,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 116 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:15,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:58:15,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 369 [2023-08-25 03:58:15,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:58:21,344 INFO L124 PetriNetUnfolderBase]: 43367/75816 cut-off events. [2023-08-25 03:58:21,344 INFO L125 PetriNetUnfolderBase]: For 1549/1549 co-relation queries the response was YES. [2023-08-25 03:58:21,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137591 conditions, 75816 events. 43367/75816 cut-off events. For 1549/1549 co-relation queries the response was YES. Maximal size of possible extension queue 1909. Compared 729741 event pairs, 28031 based on Foata normal form. 11832/77734 useless extension candidates. Maximal degree in co-relation 9584. Up to 60642 conditions per place. [2023-08-25 03:58:21,836 INFO L140 encePairwiseOnDemand]: 344/369 looper letters, 58 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2023-08-25 03:58:21,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 106 transitions, 362 flow [2023-08-25 03:58:21,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 03:58:21,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 03:58:21,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 659 transitions. [2023-08-25 03:58:21,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5953026196928636 [2023-08-25 03:58:21,842 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 659 transitions. [2023-08-25 03:58:21,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 659 transitions. [2023-08-25 03:58:21,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:58:21,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 659 transitions. [2023-08-25 03:58:21,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:21,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:21,847 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:21,848 INFO L175 Difference]: Start difference. First operand has 99 places, 116 transitions, 262 flow. Second operand 3 states and 659 transitions. [2023-08-25 03:58:21,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 106 transitions, 362 flow [2023-08-25 03:58:21,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 106 transitions, 362 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 03:58:21,854 INFO L231 Difference]: Finished difference. Result has 101 places, 95 transitions, 230 flow [2023-08-25 03:58:21,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=101, PETRI_TRANSITIONS=95} [2023-08-25 03:58:21,855 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 2 predicate places. [2023-08-25 03:58:21,855 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 95 transitions, 230 flow [2023-08-25 03:58:21,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:21,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:58:21,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 03:58:21,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 03:58:21,856 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 17 more)] === [2023-08-25 03:58:21,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:58:21,857 INFO L85 PathProgramCache]: Analyzing trace with hash 381282699, now seen corresponding path program 1 times [2023-08-25 03:58:21,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:58:21,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665597096] [2023-08-25 03:58:21,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:58:21,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:58:21,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:58:21,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:58:21,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:58:21,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665597096] [2023-08-25 03:58:21,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665597096] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 03:58:21,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 03:58:21,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 03:58:21,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469902291] [2023-08-25 03:58:21,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 03:58:21,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 03:58:21,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:58:21,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 03:58:21,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 03:58:21,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 369 [2023-08-25 03:58:21,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 95 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:21,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:58:21,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 369 [2023-08-25 03:58:21,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:58:59,983 INFO L124 PetriNetUnfolderBase]: 442040/647649 cut-off events. [2023-08-25 03:58:59,984 INFO L125 PetriNetUnfolderBase]: For 28894/28894 co-relation queries the response was YES. [2023-08-25 03:59:01,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1290808 conditions, 647649 events. 442040/647649 cut-off events. For 28894/28894 co-relation queries the response was YES. Maximal size of possible extension queue 11044. Compared 5741014 event pairs, 178250 based on Foata normal form. 0/517143 useless extension candidates. Maximal degree in co-relation 1290686. Up to 320586 conditions per place. [2023-08-25 03:59:03,623 INFO L140 encePairwiseOnDemand]: 342/369 looper letters, 123 selfloop transitions, 20 changer transitions 0/162 dead transitions. [2023-08-25 03:59:03,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 162 transitions, 678 flow [2023-08-25 03:59:03,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 03:59:03,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 03:59:03,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 625 transitions. [2023-08-25 03:59:03,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5645889792231256 [2023-08-25 03:59:03,625 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 625 transitions. [2023-08-25 03:59:03,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 625 transitions. [2023-08-25 03:59:03,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:59:03,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 625 transitions. [2023-08-25 03:59:03,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:03,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:03,630 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:03,630 INFO L175 Difference]: Start difference. First operand has 101 places, 95 transitions, 230 flow. Second operand 3 states and 625 transitions. [2023-08-25 03:59:03,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 162 transitions, 678 flow [2023-08-25 03:59:03,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 162 transitions, 675 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 03:59:03,672 INFO L231 Difference]: Finished difference. Result has 104 places, 115 transitions, 402 flow [2023-08-25 03:59:03,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=402, PETRI_PLACES=104, PETRI_TRANSITIONS=115} [2023-08-25 03:59:03,672 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 5 predicate places. [2023-08-25 03:59:03,673 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 115 transitions, 402 flow [2023-08-25 03:59:03,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:03,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:59:03,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 03:59:03,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 03:59:03,673 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 17 more)] === [2023-08-25 03:59:03,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:59:03,674 INFO L85 PathProgramCache]: Analyzing trace with hash -199447284, now seen corresponding path program 1 times [2023-08-25 03:59:03,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:59:03,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732220787] [2023-08-25 03:59:03,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:59:03,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:59:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:59:03,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:59:03,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:59:03,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732220787] [2023-08-25 03:59:03,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732220787] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 03:59:03,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636050874] [2023-08-25 03:59:03,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:59:03,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 03:59:03,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 03:59:03,717 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 03:59:03,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-25 03:59:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:59:03,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 03:59:03,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 03:59:03,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:59:03,834 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 03:59:03,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:59:03,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636050874] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 03:59:03,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 03:59:03,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-25 03:59:03,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368779551] [2023-08-25 03:59:03,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 03:59:03,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 03:59:03,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:59:03,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 03:59:03,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-25 03:59:03,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 369 [2023-08-25 03:59:03,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 115 transitions, 402 flow. Second operand has 7 states, 7 states have (on average 192.28571428571428) internal successors, (1346), 7 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:03,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:59:03,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 369 [2023-08-25 03:59:03,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:59:07,477 INFO L124 PetriNetUnfolderBase]: 31792/56632 cut-off events. [2023-08-25 03:59:07,477 INFO L125 PetriNetUnfolderBase]: For 38908/40459 co-relation queries the response was YES. [2023-08-25 03:59:07,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139207 conditions, 56632 events. 31792/56632 cut-off events. For 38908/40459 co-relation queries the response was YES. Maximal size of possible extension queue 1789. Compared 544227 event pairs, 4567 based on Foata normal form. 5283/58375 useless extension candidates. Maximal degree in co-relation 11521. Up to 32433 conditions per place. [2023-08-25 03:59:07,824 INFO L140 encePairwiseOnDemand]: 366/369 looper letters, 111 selfloop transitions, 4 changer transitions 0/169 dead transitions. [2023-08-25 03:59:07,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 169 transitions, 779 flow [2023-08-25 03:59:07,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 03:59:07,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 03:59:07,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1244 transitions. [2023-08-25 03:59:07,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5618789521228545 [2023-08-25 03:59:07,828 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1244 transitions. [2023-08-25 03:59:07,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1244 transitions. [2023-08-25 03:59:07,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:59:07,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1244 transitions. [2023-08-25 03:59:07,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 207.33333333333334) internal successors, (1244), 6 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:07,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 369.0) internal successors, (2583), 7 states have internal predecessors, (2583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:07,834 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 369.0) internal successors, (2583), 7 states have internal predecessors, (2583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:07,834 INFO L175 Difference]: Start difference. First operand has 104 places, 115 transitions, 402 flow. Second operand 6 states and 1244 transitions. [2023-08-25 03:59:07,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 169 transitions, 779 flow [2023-08-25 03:59:07,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 169 transitions, 715 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-25 03:59:07,903 INFO L231 Difference]: Finished difference. Result has 93 places, 97 transitions, 309 flow [2023-08-25 03:59:07,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=309, PETRI_PLACES=93, PETRI_TRANSITIONS=97} [2023-08-25 03:59:07,904 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -6 predicate places. [2023-08-25 03:59:07,904 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 97 transitions, 309 flow [2023-08-25 03:59:07,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 192.28571428571428) internal successors, (1346), 7 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:07,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:59:07,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 03:59:07,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-25 03:59:08,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-08-25 03:59:08,111 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 17 more)] === [2023-08-25 03:59:08,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:59:08,112 INFO L85 PathProgramCache]: Analyzing trace with hash -280033649, now seen corresponding path program 1 times [2023-08-25 03:59:08,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:59:08,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160338697] [2023-08-25 03:59:08,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:59:08,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:59:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:59:08,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:59:08,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:59:08,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160338697] [2023-08-25 03:59:08,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160338697] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 03:59:08,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 03:59:08,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 03:59:08,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433071569] [2023-08-25 03:59:08,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 03:59:08,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 03:59:08,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:59:08,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 03:59:08,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 03:59:08,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 369 [2023-08-25 03:59:08,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 97 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:08,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:59:08,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 369 [2023-08-25 03:59:08,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:59:15,512 INFO L124 PetriNetUnfolderBase]: 86210/126557 cut-off events. [2023-08-25 03:59:15,512 INFO L125 PetriNetUnfolderBase]: For 58330/58885 co-relation queries the response was YES. [2023-08-25 03:59:15,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313583 conditions, 126557 events. 86210/126557 cut-off events. For 58330/58885 co-relation queries the response was YES. Maximal size of possible extension queue 2713. Compared 962445 event pairs, 60749 based on Foata normal form. 0/109825 useless extension candidates. Maximal degree in co-relation 288313. Up to 110036 conditions per place. [2023-08-25 03:59:16,450 INFO L140 encePairwiseOnDemand]: 357/369 looper letters, 118 selfloop transitions, 20 changer transitions 0/154 dead transitions. [2023-08-25 03:59:16,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 154 transitions, 777 flow [2023-08-25 03:59:16,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 03:59:16,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 03:59:16,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 576 transitions. [2023-08-25 03:59:16,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5203252032520326 [2023-08-25 03:59:16,453 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 576 transitions. [2023-08-25 03:59:16,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 576 transitions. [2023-08-25 03:59:16,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:59:16,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 576 transitions. [2023-08-25 03:59:16,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:16,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:16,457 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:16,457 INFO L175 Difference]: Start difference. First operand has 93 places, 97 transitions, 309 flow. Second operand 3 states and 576 transitions. [2023-08-25 03:59:16,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 154 transitions, 777 flow [2023-08-25 03:59:16,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 154 transitions, 762 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-25 03:59:16,480 INFO L231 Difference]: Finished difference. Result has 94 places, 115 transitions, 486 flow [2023-08-25 03:59:16,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=486, PETRI_PLACES=94, PETRI_TRANSITIONS=115} [2023-08-25 03:59:16,481 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -5 predicate places. [2023-08-25 03:59:16,481 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 115 transitions, 486 flow [2023-08-25 03:59:16,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:16,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:59:16,481 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-25 03:59:16,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-25 03:59:16,481 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 17 more)] === [2023-08-25 03:59:16,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:59:16,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1336502714, now seen corresponding path program 1 times [2023-08-25 03:59:16,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:59:16,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191613519] [2023-08-25 03:59:16,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:59:16,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:59:16,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 03:59:16,508 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 03:59:16,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 03:59:16,521 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 03:59:16,522 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 03:59:16,522 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 20 remaining) [2023-08-25 03:59:16,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 20 remaining) [2023-08-25 03:59:16,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 20 remaining) [2023-08-25 03:59:16,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (16 of 20 remaining) [2023-08-25 03:59:16,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (15 of 20 remaining) [2023-08-25 03:59:16,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (14 of 20 remaining) [2023-08-25 03:59:16,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (13 of 20 remaining) [2023-08-25 03:59:16,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (12 of 20 remaining) [2023-08-25 03:59:16,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 20 remaining) [2023-08-25 03:59:16,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 20 remaining) [2023-08-25 03:59:16,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 20 remaining) [2023-08-25 03:59:16,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 20 remaining) [2023-08-25 03:59:16,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 20 remaining) [2023-08-25 03:59:16,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 20 remaining) [2023-08-25 03:59:16,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 20 remaining) [2023-08-25 03:59:16,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 20 remaining) [2023-08-25 03:59:16,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 20 remaining) [2023-08-25 03:59:16,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 20 remaining) [2023-08-25 03:59:16,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 20 remaining) [2023-08-25 03:59:16,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 20 remaining) [2023-08-25 03:59:16,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-25 03:59:16,524 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-25 03:59:16,525 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 03:59:16,525 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-25 03:59:16,548 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-25 03:59:16,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 275 transitions, 594 flow [2023-08-25 03:59:16,628 INFO L124 PetriNetUnfolderBase]: 86/742 cut-off events. [2023-08-25 03:59:16,628 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-25 03:59:16,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 797 conditions, 742 events. 86/742 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3253 event pairs, 6 based on Foata normal form. 0/614 useless extension candidates. Maximal degree in co-relation 500. Up to 32 conditions per place. [2023-08-25 03:59:16,635 INFO L82 GeneralOperation]: Start removeDead. Operand has 250 places, 275 transitions, 594 flow [2023-08-25 03:59:16,639 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 250 places, 275 transitions, 594 flow [2023-08-25 03:59:16,639 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 03:59:16,639 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 250 places, 275 transitions, 594 flow [2023-08-25 03:59:16,640 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 250 places, 275 transitions, 594 flow [2023-08-25 03:59:16,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 275 transitions, 594 flow [2023-08-25 03:59:16,700 INFO L124 PetriNetUnfolderBase]: 86/742 cut-off events. [2023-08-25 03:59:16,701 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-25 03:59:16,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 797 conditions, 742 events. 86/742 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3253 event pairs, 6 based on Foata normal form. 0/614 useless extension candidates. Maximal degree in co-relation 500. Up to 32 conditions per place. [2023-08-25 03:59:16,729 INFO L119 LiptonReduction]: Number of co-enabled transitions 45232 [2023-08-25 03:59:19,823 INFO L134 LiptonReduction]: Checked pairs total: 195272 [2023-08-25 03:59:19,824 INFO L136 LiptonReduction]: Total number of compositions: 159 [2023-08-25 03:59:19,825 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 03:59:19,825 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;@7e9175b1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 03:59:19,825 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-08-25 03:59:19,827 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 03:59:19,827 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-25 03:59:19,827 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 03:59:19,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:59:19,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-25 03:59:19,827 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 21 more)] === [2023-08-25 03:59:19,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:59:19,827 INFO L85 PathProgramCache]: Analyzing trace with hash 54189597, now seen corresponding path program 1 times [2023-08-25 03:59:19,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:59:19,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311316825] [2023-08-25 03:59:19,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:59:19,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:59:19,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:59:19,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:59:19,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:59:19,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311316825] [2023-08-25 03:59:19,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311316825] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 03:59:19,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 03:59:19,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 03:59:19,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330020386] [2023-08-25 03:59:19,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 03:59:19,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 03:59:19,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:59:19,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 03:59:19,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 03:59:19,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 434 [2023-08-25 03:59:19,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 149 transitions, 342 flow. Second operand has 3 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:19,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:59:19,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 434 [2023-08-25 03:59:19,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:00:53,884 INFO L124 PetriNetUnfolderBase]: 724780/1069135 cut-off events. [2023-08-25 04:00:53,884 INFO L125 PetriNetUnfolderBase]: For 24744/24744 co-relation queries the response was YES. [2023-08-25 04:00:58,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2021568 conditions, 1069135 events. 724780/1069135 cut-off events. For 24744/24744 co-relation queries the response was YES. Maximal size of possible extension queue 20406. Compared 10533680 event pairs, 704131 based on Foata normal form. 234297/1191443 useless extension candidates. Maximal degree in co-relation 620375. Up to 938009 conditions per place. [2023-08-25 04:01:05,327 INFO L140 encePairwiseOnDemand]: 402/434 looper letters, 71 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2023-08-25 04:01:05,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 131 transitions, 452 flow [2023-08-25 04:01:05,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:01:05,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:01:05,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 793 transitions. [2023-08-25 04:01:05,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.609062980030722 [2023-08-25 04:01:05,329 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 793 transitions. [2023-08-25 04:01:05,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 793 transitions. [2023-08-25 04:01:05,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:01:05,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 793 transitions. [2023-08-25 04:01:05,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:01:05,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 434.0) internal successors, (1736), 4 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:01:05,351 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 434.0) internal successors, (1736), 4 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:01:05,351 INFO L175 Difference]: Start difference. First operand has 126 places, 149 transitions, 342 flow. Second operand 3 states and 793 transitions. [2023-08-25 04:01:05,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 131 transitions, 452 flow [2023-08-25 04:01:05,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 131 transitions, 452 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 04:01:05,394 INFO L231 Difference]: Finished difference. Result has 127 places, 120 transitions, 294 flow [2023-08-25 04:01:05,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=434, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=127, PETRI_TRANSITIONS=120} [2023-08-25 04:01:05,395 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, 1 predicate places. [2023-08-25 04:01:05,395 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 120 transitions, 294 flow [2023-08-25 04:01:05,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:01:05,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:01:05,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:01:05,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-25 04:01:05,396 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 21 more)] === [2023-08-25 04:01:05,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:01:05,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1357101613, now seen corresponding path program 1 times [2023-08-25 04:01:05,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:01:05,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468726630] [2023-08-25 04:01:05,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:01:05,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:01:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:01:05,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:01:05,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:01:05,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468726630] [2023-08-25 04:01:05,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468726630] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:01:05,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:01:05,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:01:05,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809602219] [2023-08-25 04:01:05,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:01:05,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:01:05,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:01:05,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:01:05,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:01:05,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 434 [2023-08-25 04:01:05,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 120 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:01:05,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:01:05,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 434 [2023-08-25 04:01:05,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand