/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_22-deref_read_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 07:45:38,904 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 07:45:38,985 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 07:45:38,993 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 07:45:38,993 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 07:45:39,024 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 07:45:39,024 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 07:45:39,025 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 07:45:39,025 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 07:45:39,029 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 07:45:39,029 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 07:45:39,030 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 07:45:39,030 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 07:45:39,031 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 07:45:39,031 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 07:45:39,031 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 07:45:39,032 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 07:45:39,032 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 07:45:39,032 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 07:45:39,032 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 07:45:39,032 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 07:45:39,033 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 07:45:39,033 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 07:45:39,034 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 07:45:39,034 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 07:45:39,034 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 07:45:39,034 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 07:45:39,035 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 07:45:39,035 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 07:45:39,035 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 07:45:39,036 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 07:45:39,036 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 07:45:39,036 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 07:45:39,036 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 07:45:39,037 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 07:45:39,037 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 07:45:39,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 07:45:39,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 07:45:39,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 07:45:39,342 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 07:45:39,343 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 07:45:39,344 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_22-deref_read_racefree.i [2023-08-26 07:45:40,566 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 07:45:40,795 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 07:45:40,795 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_22-deref_read_racefree.i [2023-08-26 07:45:40,813 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29ac84b3b/ee8f9f479a31408391e8b045c5d19342/FLAG3f40c60f2 [2023-08-26 07:45:40,830 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29ac84b3b/ee8f9f479a31408391e8b045c5d19342 [2023-08-26 07:45:40,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 07:45:40,835 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 07:45:40,838 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 07:45:40,838 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 07:45:40,841 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 07:45:40,842 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 07:45:40" (1/1) ... [2023-08-26 07:45:40,843 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48ed83a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:45:40, skipping insertion in model container [2023-08-26 07:45:40,843 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 07:45:40" (1/1) ... [2023-08-26 07:45:40,885 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 07:45:41,226 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 07:45:41,240 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 07:45:41,267 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 07:45:41,269 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 07:45:41,301 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 07:45:41,340 INFO L206 MainTranslator]: Completed translation [2023-08-26 07:45:41,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:45:41 WrapperNode [2023-08-26 07:45:41,341 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 07:45:41,342 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 07:45:41,342 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 07:45:41,342 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 07:45:41,348 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:45:41" (1/1) ... [2023-08-26 07:45:41,370 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:45:41" (1/1) ... [2023-08-26 07:45:41,388 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 85 [2023-08-26 07:45:41,389 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 07:45:41,389 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 07:45:41,390 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 07:45:41,390 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 07:45:41,397 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:45:41" (1/1) ... [2023-08-26 07:45:41,398 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:45:41" (1/1) ... [2023-08-26 07:45:41,401 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:45:41" (1/1) ... [2023-08-26 07:45:41,401 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:45:41" (1/1) ... [2023-08-26 07:45:41,411 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:45:41" (1/1) ... [2023-08-26 07:45:41,414 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:45:41" (1/1) ... [2023-08-26 07:45:41,416 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:45:41" (1/1) ... [2023-08-26 07:45:41,417 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:45:41" (1/1) ... [2023-08-26 07:45:41,419 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 07:45:41,420 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 07:45:41,420 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 07:45:41,420 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 07:45:41,421 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:45:41" (1/1) ... [2023-08-26 07:45:41,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 07:45:41,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:45:41,450 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 07:45:41,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 07:45:41,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 07:45:41,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 07:45:41,510 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 07:45:41,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 07:45:41,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 07:45:41,511 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 07:45:41,511 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 07:45:41,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 07:45:41,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 07:45:41,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 07:45:41,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 07:45:41,512 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 07:45:41,629 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 07:45:41,631 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 07:45:41,890 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 07:45:41,897 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 07:45:41,897 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-08-26 07:45:41,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 07:45:41 BoogieIcfgContainer [2023-08-26 07:45:41,899 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 07:45:41,900 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 07:45:41,900 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 07:45:41,903 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 07:45:41,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 07:45:40" (1/3) ... [2023-08-26 07:45:41,904 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62fddd7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 07:45:41, skipping insertion in model container [2023-08-26 07:45:41,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:45:41" (2/3) ... [2023-08-26 07:45:41,904 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62fddd7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 07:45:41, skipping insertion in model container [2023-08-26 07:45:41,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 07:45:41" (3/3) ... [2023-08-26 07:45:41,905 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_22-deref_read_racefree.i [2023-08-26 07:45:41,919 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 07:45:41,920 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-26 07:45:41,920 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 07:45:41,975 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 07:45:42,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 156 transitions, 317 flow [2023-08-26 07:45:42,064 INFO L124 PetriNetUnfolderBase]: 16/209 cut-off events. [2023-08-26 07:45:42,064 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:45:42,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 209 events. 16/209 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 596 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 124. Up to 4 conditions per place. [2023-08-26 07:45:42,073 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 156 transitions, 317 flow [2023-08-26 07:45:42,077 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 156 transitions, 317 flow [2023-08-26 07:45:42,080 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:45:42,087 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 156 transitions, 317 flow [2023-08-26 07:45:42,089 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 156 transitions, 317 flow [2023-08-26 07:45:42,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 156 transitions, 317 flow [2023-08-26 07:45:42,146 INFO L124 PetriNetUnfolderBase]: 16/209 cut-off events. [2023-08-26 07:45:42,146 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:45:42,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 209 events. 16/209 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 596 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 124. Up to 4 conditions per place. [2023-08-26 07:45:42,156 INFO L119 LiptonReduction]: Number of co-enabled transitions 7788 [2023-08-26 07:45:45,382 INFO L134 LiptonReduction]: Checked pairs total: 29608 [2023-08-26 07:45:45,382 INFO L136 LiptonReduction]: Total number of compositions: 107 [2023-08-26 07:45:45,400 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 07:45:45,409 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;@5e6cc557, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:45:45,409 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-26 07:45:45,411 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:45:45,412 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-08-26 07:45:45,412 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:45:45,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:45:45,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 07:45:45,413 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 13 more)] === [2023-08-26 07:45:45,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:45:45,419 INFO L85 PathProgramCache]: Analyzing trace with hash 18010, now seen corresponding path program 1 times [2023-08-26 07:45:45,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:45:45,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914933159] [2023-08-26 07:45:45,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:45,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:45:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:45,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:45:45,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:45:45,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914933159] [2023-08-26 07:45:45,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914933159] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:45:45,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:45:45,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 07:45:45,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794755871] [2023-08-26 07:45:45,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:45:45,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 07:45:45,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:45:45,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 07:45:45,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 07:45:45,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 263 [2023-08-26 07:45:45,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 71 transitions, 147 flow. Second operand has 2 states, 2 states have (on average 144.0) internal successors, (288), 2 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:45,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:45:45,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 263 [2023-08-26 07:45:45,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:45:45,772 INFO L124 PetriNetUnfolderBase]: 132/560 cut-off events. [2023-08-26 07:45:45,772 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:45:45,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 560 events. 132/560 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2927 event pairs, 132 based on Foata normal form. 12/521 useless extension candidates. Maximal degree in co-relation 825. Up to 300 conditions per place. [2023-08-26 07:45:45,778 INFO L140 encePairwiseOnDemand]: 253/263 looper letters, 25 selfloop transitions, 0 changer transitions 0/61 dead transitions. [2023-08-26 07:45:45,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 61 transitions, 177 flow [2023-08-26 07:45:45,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 07:45:45,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 07:45:45,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 321 transitions. [2023-08-26 07:45:45,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6102661596958175 [2023-08-26 07:45:45,793 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 321 transitions. [2023-08-26 07:45:45,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 321 transitions. [2023-08-26 07:45:45,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:45:45,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 321 transitions. [2023-08-26 07:45:45,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 160.5) internal successors, (321), 2 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:45,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:45,810 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:45,812 INFO L175 Difference]: Start difference. First operand has 66 places, 71 transitions, 147 flow. Second operand 2 states and 321 transitions. [2023-08-26 07:45:45,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 61 transitions, 177 flow [2023-08-26 07:45:45,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 61 transitions, 177 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:45:45,818 INFO L231 Difference]: Finished difference. Result has 65 places, 61 transitions, 127 flow [2023-08-26 07:45:45,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=127, PETRI_PLACES=65, PETRI_TRANSITIONS=61} [2023-08-26 07:45:45,825 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -1 predicate places. [2023-08-26 07:45:45,825 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 61 transitions, 127 flow [2023-08-26 07:45:45,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 144.0) internal successors, (288), 2 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:45,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:45:45,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 07:45:45,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 07:45:45,826 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 13 more)] === [2023-08-26 07:45:45,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:45:45,827 INFO L85 PathProgramCache]: Analyzing trace with hash 558106, now seen corresponding path program 1 times [2023-08-26 07:45:45,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:45:45,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664875105] [2023-08-26 07:45:45,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:45,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:45:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:45,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:45:45,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:45:45,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664875105] [2023-08-26 07:45:45,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664875105] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:45:45,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:45:45,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:45:45,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019351928] [2023-08-26 07:45:45,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:45:45,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:45:45,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:45:45,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:45:45,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:45:45,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 263 [2023-08-26 07:45:45,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 61 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:45,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:45:45,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 263 [2023-08-26 07:45:45,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:45:46,010 INFO L124 PetriNetUnfolderBase]: 132/571 cut-off events. [2023-08-26 07:45:46,010 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:45:46,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 869 conditions, 571 events. 132/571 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2971 event pairs, 110 based on Foata normal form. 0/520 useless extension candidates. Maximal degree in co-relation 865. Up to 276 conditions per place. [2023-08-26 07:45:46,013 INFO L140 encePairwiseOnDemand]: 260/263 looper letters, 36 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-26 07:45:46,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 74 transitions, 229 flow [2023-08-26 07:45:46,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:45:46,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:45:46,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 444 transitions. [2023-08-26 07:45:46,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5627376425855514 [2023-08-26 07:45:46,017 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 444 transitions. [2023-08-26 07:45:46,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 444 transitions. [2023-08-26 07:45:46,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:45:46,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 444 transitions. [2023-08-26 07:45:46,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:46,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:46,021 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:46,021 INFO L175 Difference]: Start difference. First operand has 65 places, 61 transitions, 127 flow. Second operand 3 states and 444 transitions. [2023-08-26 07:45:46,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 74 transitions, 229 flow [2023-08-26 07:45:46,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 74 transitions, 229 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:45:46,023 INFO L231 Difference]: Finished difference. Result has 68 places, 61 transitions, 135 flow [2023-08-26 07:45:46,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=68, PETRI_TRANSITIONS=61} [2023-08-26 07:45:46,024 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 2 predicate places. [2023-08-26 07:45:46,025 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 61 transitions, 135 flow [2023-08-26 07:45:46,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:46,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:45:46,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 07:45:46,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 07:45:46,026 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 13 more)] === [2023-08-26 07:45:46,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:45:46,026 INFO L85 PathProgramCache]: Analyzing trace with hash -549755770, now seen corresponding path program 1 times [2023-08-26 07:45:46,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:45:46,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640201865] [2023-08-26 07:45:46,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:46,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:45:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:46,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 07:45:46,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:45:46,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640201865] [2023-08-26 07:45:46,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640201865] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:45:46,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:45:46,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:45:46,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631970596] [2023-08-26 07:45:46,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:45:46,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:45:46,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:45:46,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:45:46,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:45:46,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 263 [2023-08-26 07:45:46,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 61 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:46,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:45:46,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 263 [2023-08-26 07:45:46,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:45:46,179 INFO L124 PetriNetUnfolderBase]: 176/641 cut-off events. [2023-08-26 07:45:46,180 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-26 07:45:46,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1086 conditions, 641 events. 176/641 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3251 event pairs, 116 based on Foata normal form. 0/613 useless extension candidates. Maximal degree in co-relation 1080. Up to 367 conditions per place. [2023-08-26 07:45:46,184 INFO L140 encePairwiseOnDemand]: 258/263 looper letters, 33 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-08-26 07:45:46,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 64 transitions, 216 flow [2023-08-26 07:45:46,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:45:46,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:45:46,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-08-26 07:45:46,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5576679340937896 [2023-08-26 07:45:46,186 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-08-26 07:45:46,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-08-26 07:45:46,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:45:46,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-08-26 07:45:46,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:46,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:46,190 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:46,190 INFO L175 Difference]: Start difference. First operand has 68 places, 61 transitions, 135 flow. Second operand 3 states and 440 transitions. [2023-08-26 07:45:46,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 64 transitions, 216 flow [2023-08-26 07:45:46,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 64 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:45:46,192 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 141 flow [2023-08-26 07:45:46,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2023-08-26 07:45:46,194 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 0 predicate places. [2023-08-26 07:45:46,196 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 141 flow [2023-08-26 07:45:46,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:46,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:45:46,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:45:46,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 07:45:46,198 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 13 more)] === [2023-08-26 07:45:46,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:45:46,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1703436689, now seen corresponding path program 1 times [2023-08-26 07:45:46,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:45:46,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52388307] [2023-08-26 07:45:46,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:46,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:45:46,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:46,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:45:46,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:45:46,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52388307] [2023-08-26 07:45:46,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52388307] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:45:46,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:45:46,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:45:46,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764596541] [2023-08-26 07:45:46,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:45:46,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:45:46,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:45:46,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:45:46,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 07:45:46,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 263 [2023-08-26 07:45:46,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 141 flow. Second operand has 6 states, 6 states have (on average 108.83333333333333) internal successors, (653), 6 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:46,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:45:46,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 263 [2023-08-26 07:45:46,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:45:46,872 INFO L124 PetriNetUnfolderBase]: 513/1119 cut-off events. [2023-08-26 07:45:46,872 INFO L125 PetriNetUnfolderBase]: For 90/91 co-relation queries the response was YES. [2023-08-26 07:45:46,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2314 conditions, 1119 events. 513/1119 cut-off events. For 90/91 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4858 event pairs, 302 based on Foata normal form. 0/1014 useless extension candidates. Maximal degree in co-relation 2308. Up to 681 conditions per place. [2023-08-26 07:45:46,877 INFO L140 encePairwiseOnDemand]: 251/263 looper letters, 105 selfloop transitions, 10 changer transitions 0/122 dead transitions. [2023-08-26 07:45:46,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 122 transitions, 515 flow [2023-08-26 07:45:46,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:45:46,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:45:46,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 758 transitions. [2023-08-26 07:45:46,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4803548795944233 [2023-08-26 07:45:46,880 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 758 transitions. [2023-08-26 07:45:46,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 758 transitions. [2023-08-26 07:45:46,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:45:46,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 758 transitions. [2023-08-26 07:45:46,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 126.33333333333333) internal successors, (758), 6 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:46,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 263.0) internal successors, (1841), 7 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:46,885 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 263.0) internal successors, (1841), 7 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:46,886 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 141 flow. Second operand 6 states and 758 transitions. [2023-08-26 07:45:46,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 122 transitions, 515 flow [2023-08-26 07:45:46,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 122 transitions, 515 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:45:46,890 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 157 flow [2023-08-26 07:45:46,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=157, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2023-08-26 07:45:46,891 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 3 predicate places. [2023-08-26 07:45:46,892 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 157 flow [2023-08-26 07:45:46,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 108.83333333333333) internal successors, (653), 6 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:46,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:45:46,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:45:46,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 07:45:46,893 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 13 more)] === [2023-08-26 07:45:46,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:45:46,894 INFO L85 PathProgramCache]: Analyzing trace with hash 335171838, now seen corresponding path program 1 times [2023-08-26 07:45:46,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:45:46,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270555226] [2023-08-26 07:45:46,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:46,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:45:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:46,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:45:46,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:45:46,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270555226] [2023-08-26 07:45:46,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270555226] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:45:46,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133718970] [2023-08-26 07:45:46,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:46,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:45:46,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:45:46,985 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) [2023-08-26 07:45:47,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 07:45:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:47,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:45:47,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:45:47,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:45:47,123 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:45:47,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:45:47,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133718970] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:45:47,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:45:47,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 07:45:47,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243321368] [2023-08-26 07:45:47,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:45:47,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 07:45:47,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:45:47,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 07:45:47,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 07:45:47,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 263 [2023-08-26 07:45:47,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 157 flow. Second operand has 7 states, 7 states have (on average 137.57142857142858) internal successors, (963), 7 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:47,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:45:47,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 263 [2023-08-26 07:45:47,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:45:47,206 INFO L124 PetriNetUnfolderBase]: 24/103 cut-off events. [2023-08-26 07:45:47,207 INFO L125 PetriNetUnfolderBase]: For 5/6 co-relation queries the response was YES. [2023-08-26 07:45:47,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 103 events. 24/103 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 186 event pairs, 0 based on Foata normal form. 15/114 useless extension candidates. Maximal degree in co-relation 210. Up to 50 conditions per place. [2023-08-26 07:45:47,207 INFO L140 encePairwiseOnDemand]: 260/263 looper letters, 21 selfloop transitions, 2 changer transitions 6/55 dead transitions. [2023-08-26 07:45:47,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 55 transitions, 200 flow [2023-08-26 07:45:47,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 07:45:47,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 07:45:47,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 570 transitions. [2023-08-26 07:45:47,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5418250950570342 [2023-08-26 07:45:47,209 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 570 transitions. [2023-08-26 07:45:47,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 570 transitions. [2023-08-26 07:45:47,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:45:47,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 570 transitions. [2023-08-26 07:45:47,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:47,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 263.0) internal successors, (1315), 5 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:47,214 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 263.0) internal successors, (1315), 5 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:47,214 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 157 flow. Second operand 4 states and 570 transitions. [2023-08-26 07:45:47,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 55 transitions, 200 flow [2023-08-26 07:45:47,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 55 transitions, 175 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-26 07:45:47,216 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 89 flow [2023-08-26 07:45:47,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=89, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2023-08-26 07:45:47,217 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -15 predicate places. [2023-08-26 07:45:47,217 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 89 flow [2023-08-26 07:45:47,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 137.57142857142858) internal successors, (963), 7 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:47,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:45:47,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:45:47,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-26 07:45:47,423 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 [2023-08-26 07:45:47,423 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 13 more)] === [2023-08-26 07:45:47,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:45:47,424 INFO L85 PathProgramCache]: Analyzing trace with hash 126342855, now seen corresponding path program 1 times [2023-08-26 07:45:47,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:45:47,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139091155] [2023-08-26 07:45:47,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:47,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:45:47,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:47,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:45:47,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:45:47,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139091155] [2023-08-26 07:45:47,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139091155] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:45:47,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:45:47,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:45:47,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14805386] [2023-08-26 07:45:47,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:45:47,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:45:47,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:45:47,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:45:47,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 07:45:47,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 263 [2023-08-26 07:45:47,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 89 flow. Second operand has 6 states, 6 states have (on average 107.83333333333333) internal successors, (647), 6 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:47,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:45:47,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 263 [2023-08-26 07:45:47,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:45:47,804 INFO L124 PetriNetUnfolderBase]: 56/158 cut-off events. [2023-08-26 07:45:47,805 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-08-26 07:45:47,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 158 events. 56/158 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 267 event pairs, 48 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 341. Up to 126 conditions per place. [2023-08-26 07:45:47,807 INFO L140 encePairwiseOnDemand]: 257/263 looper letters, 35 selfloop transitions, 5 changer transitions 0/46 dead transitions. [2023-08-26 07:45:47,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 46 transitions, 191 flow [2023-08-26 07:45:47,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:45:47,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:45:47,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 671 transitions. [2023-08-26 07:45:47,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4252217997465146 [2023-08-26 07:45:47,810 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 671 transitions. [2023-08-26 07:45:47,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 671 transitions. [2023-08-26 07:45:47,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:45:47,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 671 transitions. [2023-08-26 07:45:47,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 111.83333333333333) internal successors, (671), 6 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:47,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 263.0) internal successors, (1841), 7 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:47,814 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 263.0) internal successors, (1841), 7 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:47,814 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 89 flow. Second operand 6 states and 671 transitions. [2023-08-26 07:45:47,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 46 transitions, 191 flow [2023-08-26 07:45:47,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:45:47,816 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 94 flow [2023-08-26 07:45:47,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=94, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2023-08-26 07:45:47,818 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -16 predicate places. [2023-08-26 07:45:47,818 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 94 flow [2023-08-26 07:45:47,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.83333333333333) internal successors, (647), 6 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:47,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:45:47,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:45:47,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 07:45:47,819 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr5ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 13 more)] === [2023-08-26 07:45:47,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:45:47,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1094763349, now seen corresponding path program 1 times [2023-08-26 07:45:47,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:45:47,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012084024] [2023-08-26 07:45:47,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:47,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:45:47,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:48,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:45:48,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:45:48,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012084024] [2023-08-26 07:45:48,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012084024] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:45:48,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:45:48,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:45:48,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903324529] [2023-08-26 07:45:48,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:45:48,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:45:48,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:45:48,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:45:48,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 07:45:48,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 263 [2023-08-26 07:45:48,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 94 flow. Second operand has 6 states, 6 states have (on average 110.16666666666667) internal successors, (661), 6 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:48,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:45:48,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 263 [2023-08-26 07:45:48,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:45:48,275 INFO L124 PetriNetUnfolderBase]: 54/153 cut-off events. [2023-08-26 07:45:48,276 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:45:48,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 153 events. 54/153 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 258 event pairs, 46 based on Foata normal form. 3/153 useless extension candidates. Maximal degree in co-relation 344. Up to 121 conditions per place. [2023-08-26 07:45:48,276 INFO L140 encePairwiseOnDemand]: 258/263 looper letters, 0 selfloop transitions, 0 changer transitions 45/45 dead transitions. [2023-08-26 07:45:48,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 45 transitions, 190 flow [2023-08-26 07:45:48,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:45:48,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:45:48,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 670 transitions. [2023-08-26 07:45:48,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42458808618504434 [2023-08-26 07:45:48,278 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 670 transitions. [2023-08-26 07:45:48,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 670 transitions. [2023-08-26 07:45:48,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:45:48,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 670 transitions. [2023-08-26 07:45:48,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 111.66666666666667) internal successors, (670), 6 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:48,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 263.0) internal successors, (1841), 7 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:48,288 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 263.0) internal successors, (1841), 7 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:48,288 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 94 flow. Second operand 6 states and 670 transitions. [2023-08-26 07:45:48,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 45 transitions, 190 flow [2023-08-26 07:45:48,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 45 transitions, 180 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-26 07:45:48,290 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2023-08-26 07:45:48,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2023-08-26 07:45:48,290 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -17 predicate places. [2023-08-26 07:45:48,291 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2023-08-26 07:45:48,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.16666666666667) internal successors, (661), 6 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:48,294 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (16 of 17 remaining) [2023-08-26 07:45:48,294 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-08-26 07:45:48,294 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-08-26 07:45:48,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (13 of 17 remaining) [2023-08-26 07:45:48,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-08-26 07:45:48,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-08-26 07:45:48,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-08-26 07:45:48,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-08-26 07:45:48,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-08-26 07:45:48,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-08-26 07:45:48,296 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-08-26 07:45:48,296 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-08-26 07:45:48,296 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-08-26 07:45:48,296 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-08-26 07:45:48,296 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-08-26 07:45:48,296 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-08-26 07:45:48,296 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-08-26 07:45:48,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 07:45:48,297 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:45:48,299 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-26 07:45:48,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 156 transitions, 317 flow [2023-08-26 07:45:48,324 INFO L124 PetriNetUnfolderBase]: 16/209 cut-off events. [2023-08-26 07:45:48,324 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:45:48,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 209 events. 16/209 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 596 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 124. Up to 4 conditions per place. [2023-08-26 07:45:48,325 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 156 transitions, 317 flow [2023-08-26 07:45:48,326 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 156 transitions, 317 flow [2023-08-26 07:45:48,326 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:45:48,326 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 156 transitions, 317 flow [2023-08-26 07:45:48,326 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 156 transitions, 317 flow [2023-08-26 07:45:48,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 156 transitions, 317 flow [2023-08-26 07:45:48,342 INFO L124 PetriNetUnfolderBase]: 16/209 cut-off events. [2023-08-26 07:45:48,342 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:45:48,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 209 events. 16/209 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 596 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 124. Up to 4 conditions per place. [2023-08-26 07:45:48,346 INFO L119 LiptonReduction]: Number of co-enabled transitions 7788 [2023-08-26 07:45:51,026 INFO L134 LiptonReduction]: Checked pairs total: 29510 [2023-08-26 07:45:51,026 INFO L136 LiptonReduction]: Total number of compositions: 108 [2023-08-26 07:45:51,028 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 07:45:51,029 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;@5e6cc557, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:45:51,029 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 07:45:51,031 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:45:51,031 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-26 07:45:51,031 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:45:51,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:45:51,032 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 07:45:51,032 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 07:45:51,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:45:51,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1665857941, now seen corresponding path program 1 times [2023-08-26 07:45:51,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:45:51,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636519177] [2023-08-26 07:45:51,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:51,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:45:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:45:51,054 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 07:45:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:45:51,087 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 07:45:51,087 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 07:45:51,087 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 07:45:51,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 07:45:51,088 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 07:45:51,090 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-26 07:45:51,090 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 07:45:51,090 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 07:45:51,127 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 07:45:51,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 223 transitions, 458 flow [2023-08-26 07:45:51,161 INFO L124 PetriNetUnfolderBase]: 27/334 cut-off events. [2023-08-26 07:45:51,161 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 07:45:51,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 334 events. 27/334 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1281 event pairs, 0 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 210. Up to 6 conditions per place. [2023-08-26 07:45:51,165 INFO L82 GeneralOperation]: Start removeDead. Operand has 211 places, 223 transitions, 458 flow [2023-08-26 07:45:51,168 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 211 places, 223 transitions, 458 flow [2023-08-26 07:45:51,168 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:45:51,168 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 211 places, 223 transitions, 458 flow [2023-08-26 07:45:51,169 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 211 places, 223 transitions, 458 flow [2023-08-26 07:45:51,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 223 transitions, 458 flow [2023-08-26 07:45:51,230 INFO L124 PetriNetUnfolderBase]: 27/334 cut-off events. [2023-08-26 07:45:51,231 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 07:45:51,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 334 events. 27/334 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1281 event pairs, 0 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 210. Up to 6 conditions per place. [2023-08-26 07:45:51,246 INFO L119 LiptonReduction]: Number of co-enabled transitions 24420 [2023-08-26 07:45:53,973 INFO L134 LiptonReduction]: Checked pairs total: 113738 [2023-08-26 07:45:53,973 INFO L136 LiptonReduction]: Total number of compositions: 132 [2023-08-26 07:45:53,974 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 07:45:53,975 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;@5e6cc557, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:45:53,975 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-08-26 07:45:53,976 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:45:53,976 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-08-26 07:45:53,976 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:45:53,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:45:53,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 07:45:53,977 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-26 07:45:53,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:45:53,977 INFO L85 PathProgramCache]: Analyzing trace with hash 34968, now seen corresponding path program 1 times [2023-08-26 07:45:53,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:45:53,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500709047] [2023-08-26 07:45:53,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:53,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:45:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:53,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:45:53,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:45:53,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500709047] [2023-08-26 07:45:53,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500709047] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:45:53,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:45:53,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 07:45:53,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366188479] [2023-08-26 07:45:53,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:45:53,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 07:45:53,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:45:53,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 07:45:53,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 07:45:53,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 355 [2023-08-26 07:45:53,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 120 transitions, 252 flow. Second operand has 2 states, 2 states have (on average 204.0) internal successors, (408), 2 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:53,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:45:53,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 355 [2023-08-26 07:45:53,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:45:55,009 INFO L124 PetriNetUnfolderBase]: 3720/9981 cut-off events. [2023-08-26 07:45:55,010 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-08-26 07:45:55,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15949 conditions, 9981 events. 3720/9981 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 93615 event pairs, 3720 based on Foata normal form. 815/9877 useless extension candidates. Maximal degree in co-relation 11305. Up to 5916 conditions per place. [2023-08-26 07:45:55,069 INFO L140 encePairwiseOnDemand]: 339/355 looper letters, 38 selfloop transitions, 0 changer transitions 0/104 dead transitions. [2023-08-26 07:45:55,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 104 transitions, 296 flow [2023-08-26 07:45:55,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 07:45:55,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 07:45:55,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 460 transitions. [2023-08-26 07:45:55,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.647887323943662 [2023-08-26 07:45:55,072 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 460 transitions. [2023-08-26 07:45:55,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 460 transitions. [2023-08-26 07:45:55,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:45:55,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 460 transitions. [2023-08-26 07:45:55,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 230.0) internal successors, (460), 2 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) [2023-08-26 07:45:55,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 355.0) internal successors, (1065), 3 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:55,077 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 355.0) internal successors, (1065), 3 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:55,077 INFO L175 Difference]: Start difference. First operand has 111 places, 120 transitions, 252 flow. Second operand 2 states and 460 transitions. [2023-08-26 07:45:55,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 104 transitions, 296 flow [2023-08-26 07:45:55,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 104 transitions, 294 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-26 07:45:55,082 INFO L231 Difference]: Finished difference. Result has 110 places, 104 transitions, 218 flow [2023-08-26 07:45:55,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=218, PETRI_PLACES=110, PETRI_TRANSITIONS=104} [2023-08-26 07:45:55,084 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, -1 predicate places. [2023-08-26 07:45:55,084 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 104 transitions, 218 flow [2023-08-26 07:45:55,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 204.0) internal successors, (408), 2 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:55,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:45:55,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 07:45:55,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 07:45:55,085 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-26 07:45:55,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:45:55,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1084211, now seen corresponding path program 1 times [2023-08-26 07:45:55,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:45:55,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675465006] [2023-08-26 07:45:55,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:55,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:45:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:55,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:45:55,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:45:55,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675465006] [2023-08-26 07:45:55,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675465006] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:45:55,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:45:55,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:45:55,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225050168] [2023-08-26 07:45:55,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:45:55,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:45:55,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:45:55,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:45:55,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:45:55,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 355 [2023-08-26 07:45:55,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 104 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:55,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:45:55,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 355 [2023-08-26 07:45:55,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:45:56,131 INFO L124 PetriNetUnfolderBase]: 3720/9836 cut-off events. [2023-08-26 07:45:56,131 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-26 07:45:56,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15801 conditions, 9836 events. 3720/9836 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 92150 event pairs, 1716 based on Foata normal form. 0/9064 useless extension candidates. Maximal degree in co-relation 15796. Up to 5892 conditions per place. [2023-08-26 07:45:56,201 INFO L140 encePairwiseOnDemand]: 352/355 looper letters, 50 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2023-08-26 07:45:56,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 118 transitions, 350 flow [2023-08-26 07:45:56,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:45:56,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:45:56,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 638 transitions. [2023-08-26 07:45:56,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5990610328638498 [2023-08-26 07:45:56,205 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 638 transitions. [2023-08-26 07:45:56,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 638 transitions. [2023-08-26 07:45:56,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:45:56,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 638 transitions. [2023-08-26 07:45:56,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:56,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 355.0) internal successors, (1420), 4 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:56,209 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 355.0) internal successors, (1420), 4 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:56,209 INFO L175 Difference]: Start difference. First operand has 110 places, 104 transitions, 218 flow. Second operand 3 states and 638 transitions. [2023-08-26 07:45:56,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 118 transitions, 350 flow [2023-08-26 07:45:56,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 118 transitions, 350 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:45:56,212 INFO L231 Difference]: Finished difference. Result has 113 places, 105 transitions, 230 flow [2023-08-26 07:45:56,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=113, PETRI_TRANSITIONS=105} [2023-08-26 07:45:56,213 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, 2 predicate places. [2023-08-26 07:45:56,213 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 105 transitions, 230 flow [2023-08-26 07:45:56,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:56,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:45:56,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:45:56,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 07:45:56,214 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-26 07:45:56,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:45:56,214 INFO L85 PathProgramCache]: Analyzing trace with hash 714692677, now seen corresponding path program 1 times [2023-08-26 07:45:56,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:45:56,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403723001] [2023-08-26 07:45:56,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:56,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:45:56,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:56,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:45:56,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:45:56,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403723001] [2023-08-26 07:45:56,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403723001] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:45:56,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454212764] [2023-08-26 07:45:56,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:56,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:45:56,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:45:56,257 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) [2023-08-26 07:45:56,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 07:45:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:56,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:45:56,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:45:56,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 07:45:56,337 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 07:45:56,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454212764] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:45:56,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 07:45:56,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-26 07:45:56,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274795841] [2023-08-26 07:45:56,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:45:56,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:45:56,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:45:56,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:45:56,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 07:45:56,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 355 [2023-08-26 07:45:56,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 105 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:56,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:45:56,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 355 [2023-08-26 07:45:56,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:45:57,491 INFO L124 PetriNetUnfolderBase]: 5317/12838 cut-off events. [2023-08-26 07:45:57,491 INFO L125 PetriNetUnfolderBase]: For 550/550 co-relation queries the response was YES. [2023-08-26 07:45:57,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21799 conditions, 12838 events. 5317/12838 cut-off events. For 550/550 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 116778 event pairs, 3984 based on Foata normal form. 0/12226 useless extension candidates. Maximal degree in co-relation 21792. Up to 8334 conditions per place. [2023-08-26 07:45:57,557 INFO L140 encePairwiseOnDemand]: 347/355 looper letters, 51 selfloop transitions, 3 changer transitions 0/110 dead transitions. [2023-08-26 07:45:57,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 110 transitions, 360 flow [2023-08-26 07:45:57,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:45:57,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:45:57,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 621 transitions. [2023-08-26 07:45:57,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5830985915492958 [2023-08-26 07:45:57,560 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 621 transitions. [2023-08-26 07:45:57,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 621 transitions. [2023-08-26 07:45:57,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:45:57,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 621 transitions. [2023-08-26 07:45:57,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:57,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 355.0) internal successors, (1420), 4 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:57,563 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 355.0) internal successors, (1420), 4 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:57,563 INFO L175 Difference]: Start difference. First operand has 113 places, 105 transitions, 230 flow. Second operand 3 states and 621 transitions. [2023-08-26 07:45:57,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 110 transitions, 360 flow [2023-08-26 07:45:57,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 110 transitions, 357 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 07:45:57,566 INFO L231 Difference]: Finished difference. Result has 110 places, 103 transitions, 241 flow [2023-08-26 07:45:57,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=241, PETRI_PLACES=110, PETRI_TRANSITIONS=103} [2023-08-26 07:45:57,568 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, -1 predicate places. [2023-08-26 07:45:57,568 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 103 transitions, 241 flow [2023-08-26 07:45:57,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:57,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:45:57,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:45:57,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 07:45:57,772 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,SelfDestructingSolverStorable10 [2023-08-26 07:45:57,773 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-26 07:45:57,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:45:57,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1703179709, now seen corresponding path program 1 times [2023-08-26 07:45:57,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:45:57,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640691357] [2023-08-26 07:45:57,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:45:57,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:45:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:45:57,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:45:57,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:45:57,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640691357] [2023-08-26 07:45:57,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640691357] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:45:57,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:45:57,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:45:57,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155725863] [2023-08-26 07:45:57,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:45:57,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:45:57,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:45:57,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:45:57,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 07:45:57,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 355 [2023-08-26 07:45:57,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 103 transitions, 241 flow. Second operand has 6 states, 6 states have (on average 140.83333333333334) internal successors, (845), 6 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:45:57,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:45:57,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 355 [2023-08-26 07:45:57,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:46:05,584 INFO L124 PetriNetUnfolderBase]: 70070/109935 cut-off events. [2023-08-26 07:46:05,584 INFO L125 PetriNetUnfolderBase]: For 9533/9535 co-relation queries the response was YES. [2023-08-26 07:46:05,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225197 conditions, 109935 events. 70070/109935 cut-off events. For 9533/9535 co-relation queries the response was YES. Maximal size of possible extension queue 1365. Compared 832720 event pairs, 24202 based on Foata normal form. 0/97507 useless extension candidates. Maximal degree in co-relation 225190. Up to 46835 conditions per place. [2023-08-26 07:46:06,182 INFO L140 encePairwiseOnDemand]: 311/355 looper letters, 346 selfloop transitions, 84 changer transitions 0/443 dead transitions. [2023-08-26 07:46:06,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 443 transitions, 1841 flow [2023-08-26 07:46:06,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:46:06,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:46:06,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1261 transitions. [2023-08-26 07:46:06,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.592018779342723 [2023-08-26 07:46:06,187 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1261 transitions. [2023-08-26 07:46:06,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1261 transitions. [2023-08-26 07:46:06,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:46:06,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1261 transitions. [2023-08-26 07:46:06,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 210.16666666666666) internal successors, (1261), 6 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:06,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 355.0) internal successors, (2485), 7 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:06,194 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 355.0) internal successors, (2485), 7 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:06,194 INFO L175 Difference]: Start difference. First operand has 110 places, 103 transitions, 241 flow. Second operand 6 states and 1261 transitions. [2023-08-26 07:46:06,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 443 transitions, 1841 flow [2023-08-26 07:46:06,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 443 transitions, 1841 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:46:06,201 INFO L231 Difference]: Finished difference. Result has 120 places, 195 transitions, 873 flow [2023-08-26 07:46:06,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=873, PETRI_PLACES=120, PETRI_TRANSITIONS=195} [2023-08-26 07:46:06,202 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, 9 predicate places. [2023-08-26 07:46:06,202 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 195 transitions, 873 flow [2023-08-26 07:46:06,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 140.83333333333334) internal successors, (845), 6 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:06,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:46:06,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:46:06,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 07:46:06,203 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-26 07:46:06,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:46:06,204 INFO L85 PathProgramCache]: Analyzing trace with hash 577221705, now seen corresponding path program 1 times [2023-08-26 07:46:06,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:46:06,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992103024] [2023-08-26 07:46:06,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:06,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:46:06,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:06,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:46:06,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:46:06,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992103024] [2023-08-26 07:46:06,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992103024] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:46:06,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101513688] [2023-08-26 07:46:06,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:06,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:46:06,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:46:06,237 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:46:06,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 07:46:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:06,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:46:06,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:46:06,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:46:06,335 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:46:06,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:46:06,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101513688] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:46:06,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:46:06,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 07:46:06,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260541166] [2023-08-26 07:46:06,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:46:06,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 07:46:06,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:46:06,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 07:46:06,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 07:46:06,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 355 [2023-08-26 07:46:06,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 195 transitions, 873 flow. Second operand has 7 states, 7 states have (on average 197.57142857142858) internal successors, (1383), 7 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:06,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:46:06,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 355 [2023-08-26 07:46:06,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:46:07,144 INFO L124 PetriNetUnfolderBase]: 3227/7680 cut-off events. [2023-08-26 07:46:07,144 INFO L125 PetriNetUnfolderBase]: For 4677/5053 co-relation queries the response was YES. [2023-08-26 07:46:07,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19343 conditions, 7680 events. 3227/7680 cut-off events. For 4677/5053 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 64066 event pairs, 442 based on Foata normal form. 708/7801 useless extension candidates. Maximal degree in co-relation 19331. Up to 3566 conditions per place. [2023-08-26 07:46:07,198 INFO L140 encePairwiseOnDemand]: 352/355 looper letters, 139 selfloop transitions, 3 changer transitions 0/255 dead transitions. [2023-08-26 07:46:07,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 255 transitions, 1440 flow [2023-08-26 07:46:07,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 07:46:07,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 07:46:07,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1045 transitions. [2023-08-26 07:46:07,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5887323943661972 [2023-08-26 07:46:07,202 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1045 transitions. [2023-08-26 07:46:07,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1045 transitions. [2023-08-26 07:46:07,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:46:07,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1045 transitions. [2023-08-26 07:46:07,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.0) internal successors, (1045), 5 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:07,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 355.0) internal successors, (2130), 6 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:07,208 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 355.0) internal successors, (2130), 6 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:07,208 INFO L175 Difference]: Start difference. First operand has 120 places, 195 transitions, 873 flow. Second operand 5 states and 1045 transitions. [2023-08-26 07:46:07,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 255 transitions, 1440 flow [2023-08-26 07:46:07,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 255 transitions, 1440 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:46:07,216 INFO L231 Difference]: Finished difference. Result has 110 places, 180 transitions, 840 flow [2023-08-26 07:46:07,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=834, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=840, PETRI_PLACES=110, PETRI_TRANSITIONS=180} [2023-08-26 07:46:07,217 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, -1 predicate places. [2023-08-26 07:46:07,217 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 180 transitions, 840 flow [2023-08-26 07:46:07,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 197.57142857142858) internal successors, (1383), 7 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:07,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:46:07,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:46:07,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-26 07:46:07,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:46:07,424 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-26 07:46:07,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:46:07,425 INFO L85 PathProgramCache]: Analyzing trace with hash -816942833, now seen corresponding path program 1 times [2023-08-26 07:46:07,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:46:07,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890191971] [2023-08-26 07:46:07,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:07,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:46:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:07,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:46:07,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:46:07,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890191971] [2023-08-26 07:46:07,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890191971] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:46:07,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:46:07,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:46:07,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315037784] [2023-08-26 07:46:07,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:46:07,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:46:07,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:46:07,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:46:07,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 07:46:07,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 355 [2023-08-26 07:46:07,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 180 transitions, 840 flow. Second operand has 6 states, 6 states have (on average 139.83333333333334) internal successors, (839), 6 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:07,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:46:07,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 355 [2023-08-26 07:46:07,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:46:09,529 INFO L124 PetriNetUnfolderBase]: 11916/19817 cut-off events. [2023-08-26 07:46:09,529 INFO L125 PetriNetUnfolderBase]: For 15100/15100 co-relation queries the response was YES. [2023-08-26 07:46:09,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58597 conditions, 19817 events. 11916/19817 cut-off events. For 15100/15100 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 133673 event pairs, 7046 based on Foata normal form. 156/19946 useless extension candidates. Maximal degree in co-relation 58584. Up to 16115 conditions per place. [2023-08-26 07:46:09,644 INFO L140 encePairwiseOnDemand]: 328/355 looper letters, 276 selfloop transitions, 86 changer transitions 0/375 dead transitions. [2023-08-26 07:46:09,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 375 transitions, 2336 flow [2023-08-26 07:46:09,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:46:09,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:46:09,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1064 transitions. [2023-08-26 07:46:09,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49953051643192486 [2023-08-26 07:46:09,648 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1064 transitions. [2023-08-26 07:46:09,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1064 transitions. [2023-08-26 07:46:09,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:46:09,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1064 transitions. [2023-08-26 07:46:09,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:09,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 355.0) internal successors, (2485), 7 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:09,655 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 355.0) internal successors, (2485), 7 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:09,656 INFO L175 Difference]: Start difference. First operand has 110 places, 180 transitions, 840 flow. Second operand 6 states and 1064 transitions. [2023-08-26 07:46:09,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 375 transitions, 2336 flow [2023-08-26 07:46:09,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 375 transitions, 2313 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-26 07:46:09,667 INFO L231 Difference]: Finished difference. Result has 117 places, 271 transitions, 1705 flow [2023-08-26 07:46:09,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1705, PETRI_PLACES=117, PETRI_TRANSITIONS=271} [2023-08-26 07:46:09,669 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, 6 predicate places. [2023-08-26 07:46:09,669 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 271 transitions, 1705 flow [2023-08-26 07:46:09,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 139.83333333333334) internal successors, (839), 6 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:09,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:46:09,669 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:46:09,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 07:46:09,670 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-26 07:46:09,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:46:09,670 INFO L85 PathProgramCache]: Analyzing trace with hash 420034940, now seen corresponding path program 1 times [2023-08-26 07:46:09,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:46:09,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926830042] [2023-08-26 07:46:09,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:09,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:46:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:09,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 07:46:09,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:46:09,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926830042] [2023-08-26 07:46:09,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926830042] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:46:09,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:46:09,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:46:09,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611741437] [2023-08-26 07:46:09,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:46:09,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:46:09,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:46:09,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:46:09,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 07:46:09,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 355 [2023-08-26 07:46:09,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 271 transitions, 1705 flow. Second operand has 6 states, 6 states have (on average 140.16666666666666) internal successors, (841), 6 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:09,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:46:09,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 355 [2023-08-26 07:46:09,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:46:12,361 INFO L124 PetriNetUnfolderBase]: 13296/22085 cut-off events. [2023-08-26 07:46:12,361 INFO L125 PetriNetUnfolderBase]: For 22756/22756 co-relation queries the response was YES. [2023-08-26 07:46:12,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71088 conditions, 22085 events. 13296/22085 cut-off events. For 22756/22756 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 151610 event pairs, 7554 based on Foata normal form. 165/22223 useless extension candidates. Maximal degree in co-relation 71072. Up to 18210 conditions per place. [2023-08-26 07:46:12,509 INFO L140 encePairwiseOnDemand]: 328/355 looper letters, 359 selfloop transitions, 101 changer transitions 0/473 dead transitions. [2023-08-26 07:46:12,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 473 transitions, 3569 flow [2023-08-26 07:46:12,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:46:12,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:46:12,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1060 transitions. [2023-08-26 07:46:12,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49765258215962443 [2023-08-26 07:46:12,512 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1060 transitions. [2023-08-26 07:46:12,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1060 transitions. [2023-08-26 07:46:12,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:46:12,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1060 transitions. [2023-08-26 07:46:12,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 176.66666666666666) internal successors, (1060), 6 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:12,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 355.0) internal successors, (2485), 7 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:12,518 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 355.0) internal successors, (2485), 7 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:12,519 INFO L175 Difference]: Start difference. First operand has 117 places, 271 transitions, 1705 flow. Second operand 6 states and 1060 transitions. [2023-08-26 07:46:12,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 473 transitions, 3569 flow [2023-08-26 07:46:12,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 473 transitions, 3553 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-08-26 07:46:12,554 INFO L231 Difference]: Finished difference. Result has 127 places, 370 transitions, 2765 flow [2023-08-26 07:46:12,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=1689, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2765, PETRI_PLACES=127, PETRI_TRANSITIONS=370} [2023-08-26 07:46:12,554 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, 16 predicate places. [2023-08-26 07:46:12,555 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 370 transitions, 2765 flow [2023-08-26 07:46:12,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 140.16666666666666) internal successors, (841), 6 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:12,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:46:12,555 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:46:12,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-26 07:46:12,555 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-26 07:46:12,556 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:46:12,556 INFO L85 PathProgramCache]: Analyzing trace with hash -704539160, now seen corresponding path program 1 times [2023-08-26 07:46:12,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:46:12,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130244075] [2023-08-26 07:46:12,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:12,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:46:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:12,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 07:46:12,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:46:12,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130244075] [2023-08-26 07:46:12,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130244075] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:46:12,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91799309] [2023-08-26 07:46:12,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:12,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:46:12,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:46:12,682 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:46:12,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 07:46:12,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:12,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-26 07:46:12,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:46:12,846 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-26 07:46:12,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:46:12,891 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-26 07:46:12,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 07:46:12,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 07:46:12,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91799309] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:46:12,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 07:46:12,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2023-08-26 07:46:12,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657114732] [2023-08-26 07:46:12,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:46:12,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 07:46:12,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:46:12,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 07:46:12,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-26 07:46:12,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 355 [2023-08-26 07:46:12,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 370 transitions, 2765 flow. Second operand has 5 states, 5 states have (on average 177.4) internal successors, (887), 5 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:12,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:46:12,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 355 [2023-08-26 07:46:12,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:46:13,168 INFO L124 PetriNetUnfolderBase]: 442/1576 cut-off events. [2023-08-26 07:46:13,168 INFO L125 PetriNetUnfolderBase]: For 1498/1498 co-relation queries the response was YES. [2023-08-26 07:46:13,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4555 conditions, 1576 events. 442/1576 cut-off events. For 1498/1498 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 9122 event pairs, 99 based on Foata normal form. 114/1689 useless extension candidates. Maximal degree in co-relation 4534. Up to 649 conditions per place. [2023-08-26 07:46:13,178 INFO L140 encePairwiseOnDemand]: 346/355 looper letters, 33 selfloop transitions, 9 changer transitions 0/90 dead transitions. [2023-08-26 07:46:13,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 90 transitions, 526 flow [2023-08-26 07:46:13,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 07:46:13,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 07:46:13,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 743 transitions. [2023-08-26 07:46:13,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5232394366197183 [2023-08-26 07:46:13,180 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 743 transitions. [2023-08-26 07:46:13,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 743 transitions. [2023-08-26 07:46:13,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:46:13,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 743 transitions. [2023-08-26 07:46:13,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 185.75) internal successors, (743), 4 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:13,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 355.0) internal successors, (1775), 5 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:13,185 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 355.0) internal successors, (1775), 5 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:13,185 INFO L175 Difference]: Start difference. First operand has 127 places, 370 transitions, 2765 flow. Second operand 4 states and 743 transitions. [2023-08-26 07:46:13,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 90 transitions, 526 flow [2023-08-26 07:46:13,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 90 transitions, 298 flow, removed 54 selfloop flow, removed 30 redundant places. [2023-08-26 07:46:13,194 INFO L231 Difference]: Finished difference. Result has 94 places, 82 transitions, 207 flow [2023-08-26 07:46:13,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=207, PETRI_PLACES=94, PETRI_TRANSITIONS=82} [2023-08-26 07:46:13,194 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, -17 predicate places. [2023-08-26 07:46:13,194 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 82 transitions, 207 flow [2023-08-26 07:46:13,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 177.4) internal successors, (887), 5 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:13,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:46:13,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:46:13,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-26 07:46:13,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-26 07:46:13,401 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr5ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-26 07:46:13,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:46:13,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1550602035, now seen corresponding path program 1 times [2023-08-26 07:46:13,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:46:13,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017137192] [2023-08-26 07:46:13,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:13,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:46:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:13,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:46:13,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:46:13,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017137192] [2023-08-26 07:46:13,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017137192] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:46:13,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:46:13,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:46:13,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744608264] [2023-08-26 07:46:13,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:46:13,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:46:13,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:46:13,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:46:13,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 07:46:13,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 355 [2023-08-26 07:46:13,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 82 transitions, 207 flow. Second operand has 6 states, 6 states have (on average 142.16666666666666) internal successors, (853), 6 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:13,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:46:13,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 355 [2023-08-26 07:46:13,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:46:14,041 INFO L124 PetriNetUnfolderBase]: 1034/2119 cut-off events. [2023-08-26 07:46:14,042 INFO L125 PetriNetUnfolderBase]: For 445/445 co-relation queries the response was YES. [2023-08-26 07:46:14,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4709 conditions, 2119 events. 1034/2119 cut-off events. For 445/445 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 9997 event pairs, 930 based on Foata normal form. 0/2095 useless extension candidates. Maximal degree in co-relation 4702. Up to 1815 conditions per place. [2023-08-26 07:46:14,047 INFO L140 encePairwiseOnDemand]: 349/355 looper letters, 80 selfloop transitions, 5 changer transitions 7/105 dead transitions. [2023-08-26 07:46:14,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 105 transitions, 473 flow [2023-08-26 07:46:14,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:46:14,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:46:14,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 909 transitions. [2023-08-26 07:46:14,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4267605633802817 [2023-08-26 07:46:14,050 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 909 transitions. [2023-08-26 07:46:14,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 909 transitions. [2023-08-26 07:46:14,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:46:14,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 909 transitions. [2023-08-26 07:46:14,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 151.5) internal successors, (909), 6 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:14,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 355.0) internal successors, (2485), 7 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:14,055 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 355.0) internal successors, (2485), 7 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:14,055 INFO L175 Difference]: Start difference. First operand has 94 places, 82 transitions, 207 flow. Second operand 6 states and 909 transitions. [2023-08-26 07:46:14,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 105 transitions, 473 flow [2023-08-26 07:46:14,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 105 transitions, 464 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:46:14,058 INFO L231 Difference]: Finished difference. Result has 96 places, 78 transitions, 199 flow [2023-08-26 07:46:14,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=199, PETRI_PLACES=96, PETRI_TRANSITIONS=78} [2023-08-26 07:46:14,058 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, -15 predicate places. [2023-08-26 07:46:14,058 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 78 transitions, 199 flow [2023-08-26 07:46:14,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 142.16666666666666) internal successors, (853), 6 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:14,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:46:14,059 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:46:14,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-26 07:46:14,059 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr5ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-26 07:46:14,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:46:14,059 INFO L85 PathProgramCache]: Analyzing trace with hash -2096610470, now seen corresponding path program 1 times [2023-08-26 07:46:14,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:46:14,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034791074] [2023-08-26 07:46:14,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:14,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:46:14,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:14,284 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 07:46:14,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:46:14,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034791074] [2023-08-26 07:46:14,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034791074] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:46:14,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:46:14,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:46:14,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061272677] [2023-08-26 07:46:14,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:46:14,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:46:14,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:46:14,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:46:14,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 07:46:14,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 355 [2023-08-26 07:46:14,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 78 transitions, 199 flow. Second operand has 6 states, 6 states have (on average 142.5) internal successors, (855), 6 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:14,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:46:14,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 355 [2023-08-26 07:46:14,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:46:14,528 INFO L124 PetriNetUnfolderBase]: 776/1633 cut-off events. [2023-08-26 07:46:14,528 INFO L125 PetriNetUnfolderBase]: For 361/361 co-relation queries the response was YES. [2023-08-26 07:46:14,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3653 conditions, 1633 events. 776/1633 cut-off events. For 361/361 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7447 event pairs, 709 based on Foata normal form. 15/1642 useless extension candidates. Maximal degree in co-relation 3646. Up to 1402 conditions per place. [2023-08-26 07:46:14,532 INFO L140 encePairwiseOnDemand]: 350/355 looper letters, 0 selfloop transitions, 0 changer transitions 93/93 dead transitions. [2023-08-26 07:46:14,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 93 transitions, 397 flow [2023-08-26 07:46:14,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:46:14,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:46:14,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 901 transitions. [2023-08-26 07:46:14,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42300469483568076 [2023-08-26 07:46:14,535 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 901 transitions. [2023-08-26 07:46:14,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 901 transitions. [2023-08-26 07:46:14,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:46:14,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 901 transitions. [2023-08-26 07:46:14,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 150.16666666666666) internal successors, (901), 6 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:14,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 355.0) internal successors, (2485), 7 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:14,540 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 355.0) internal successors, (2485), 7 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:14,540 INFO L175 Difference]: Start difference. First operand has 96 places, 78 transitions, 199 flow. Second operand 6 states and 901 transitions. [2023-08-26 07:46:14,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 93 transitions, 397 flow [2023-08-26 07:46:14,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 93 transitions, 387 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-26 07:46:14,542 INFO L231 Difference]: Finished difference. Result has 92 places, 0 transitions, 0 flow [2023-08-26 07:46:14,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=92, PETRI_TRANSITIONS=0} [2023-08-26 07:46:14,542 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, -19 predicate places. [2023-08-26 07:46:14,542 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 0 transitions, 0 flow [2023-08-26 07:46:14,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 142.5) internal successors, (855), 6 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:14,543 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (22 of 23 remaining) [2023-08-26 07:46:14,543 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (21 of 23 remaining) [2023-08-26 07:46:14,543 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (20 of 23 remaining) [2023-08-26 07:46:14,543 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (19 of 23 remaining) [2023-08-26 07:46:14,543 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (18 of 23 remaining) [2023-08-26 07:46:14,543 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (17 of 23 remaining) [2023-08-26 07:46:14,543 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (16 of 23 remaining) [2023-08-26 07:46:14,543 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (15 of 23 remaining) [2023-08-26 07:46:14,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (14 of 23 remaining) [2023-08-26 07:46:14,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (13 of 23 remaining) [2023-08-26 07:46:14,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 23 remaining) [2023-08-26 07:46:14,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (11 of 23 remaining) [2023-08-26 07:46:14,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (10 of 23 remaining) [2023-08-26 07:46:14,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (9 of 23 remaining) [2023-08-26 07:46:14,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 23 remaining) [2023-08-26 07:46:14,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 23 remaining) [2023-08-26 07:46:14,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (6 of 23 remaining) [2023-08-26 07:46:14,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 23 remaining) [2023-08-26 07:46:14,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 23 remaining) [2023-08-26 07:46:14,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (3 of 23 remaining) [2023-08-26 07:46:14,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 23 remaining) [2023-08-26 07:46:14,545 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 23 remaining) [2023-08-26 07:46:14,545 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 23 remaining) [2023-08-26 07:46:14,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-26 07:46:14,545 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:46:14,545 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-26 07:46:14,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 223 transitions, 458 flow [2023-08-26 07:46:14,577 INFO L124 PetriNetUnfolderBase]: 27/334 cut-off events. [2023-08-26 07:46:14,577 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 07:46:14,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 334 events. 27/334 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1281 event pairs, 0 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 210. Up to 6 conditions per place. [2023-08-26 07:46:14,580 INFO L82 GeneralOperation]: Start removeDead. Operand has 211 places, 223 transitions, 458 flow [2023-08-26 07:46:14,581 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 211 places, 223 transitions, 458 flow [2023-08-26 07:46:14,581 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:46:14,581 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 211 places, 223 transitions, 458 flow [2023-08-26 07:46:14,582 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 211 places, 223 transitions, 458 flow [2023-08-26 07:46:14,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 223 transitions, 458 flow [2023-08-26 07:46:14,610 INFO L124 PetriNetUnfolderBase]: 27/334 cut-off events. [2023-08-26 07:46:14,610 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 07:46:14,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 334 events. 27/334 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1281 event pairs, 0 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 210. Up to 6 conditions per place. [2023-08-26 07:46:14,622 INFO L119 LiptonReduction]: Number of co-enabled transitions 24420 [2023-08-26 07:46:17,315 INFO L134 LiptonReduction]: Checked pairs total: 113062 [2023-08-26 07:46:17,315 INFO L136 LiptonReduction]: Total number of compositions: 133 [2023-08-26 07:46:17,319 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 07:46:17,319 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;@5e6cc557, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:46:17,319 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 07:46:17,323 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:46:17,323 INFO L124 PetriNetUnfolderBase]: 3/65 cut-off events. [2023-08-26 07:46:17,323 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 07:46:17,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:46:17,323 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-26 07:46:17,323 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 07:46:17,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:46:17,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1242411640, now seen corresponding path program 1 times [2023-08-26 07:46:17,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:46:17,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530175559] [2023-08-26 07:46:17,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:17,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:46:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:46:17,341 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 07:46:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:46:17,355 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 07:46:17,355 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 07:46:17,355 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 07:46:17,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-26 07:46:17,355 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 07:46:17,356 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-26 07:46:17,356 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 07:46:17,356 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-26 07:46:17,379 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 07:46:17,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 274 places, 290 transitions, 601 flow [2023-08-26 07:46:17,434 INFO L124 PetriNetUnfolderBase]: 38/459 cut-off events. [2023-08-26 07:46:17,434 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-26 07:46:17,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 459 events. 38/459 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1985 event pairs, 0 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 338. Up to 8 conditions per place. [2023-08-26 07:46:17,440 INFO L82 GeneralOperation]: Start removeDead. Operand has 274 places, 290 transitions, 601 flow [2023-08-26 07:46:17,444 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 274 places, 290 transitions, 601 flow [2023-08-26 07:46:17,444 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:46:17,444 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 274 places, 290 transitions, 601 flow [2023-08-26 07:46:17,444 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 274 places, 290 transitions, 601 flow [2023-08-26 07:46:17,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 274 places, 290 transitions, 601 flow [2023-08-26 07:46:17,494 INFO L124 PetriNetUnfolderBase]: 38/459 cut-off events. [2023-08-26 07:46:17,494 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-26 07:46:17,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 459 events. 38/459 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1985 event pairs, 0 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 338. Up to 8 conditions per place. [2023-08-26 07:46:17,515 INFO L119 LiptonReduction]: Number of co-enabled transitions 49896 [2023-08-26 07:46:20,571 INFO L134 LiptonReduction]: Checked pairs total: 253609 [2023-08-26 07:46:20,572 INFO L136 LiptonReduction]: Total number of compositions: 155 [2023-08-26 07:46:20,574 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 07:46:20,574 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;@5e6cc557, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:46:20,574 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-08-26 07:46:20,575 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:46:20,576 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-08-26 07:46:20,576 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:46:20,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:46:20,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 07:46:20,576 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-26 07:46:20,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:46:20,576 INFO L85 PathProgramCache]: Analyzing trace with hash 55609, now seen corresponding path program 1 times [2023-08-26 07:46:20,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:46:20,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440999431] [2023-08-26 07:46:20,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:20,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:46:20,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:20,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:46:20,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:46:20,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440999431] [2023-08-26 07:46:20,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440999431] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:46:20,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:46:20,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 07:46:20,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283622752] [2023-08-26 07:46:20,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:46:20,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 07:46:20,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:46:20,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 07:46:20,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 07:46:20,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 445 [2023-08-26 07:46:20,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 168 transitions, 357 flow. Second operand has 2 states, 2 states have (on average 264.0) internal successors, (528), 2 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) [2023-08-26 07:46:20,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:46:20,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 445 [2023-08-26 07:46:20,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:46:32,946 INFO L124 PetriNetUnfolderBase]: 74700/151794 cut-off events. [2023-08-26 07:46:32,947 INFO L125 PetriNetUnfolderBase]: For 1087/1087 co-relation queries the response was YES. [2023-08-26 07:46:33,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255823 conditions, 151794 events. 74700/151794 cut-off events. For 1087/1087 co-relation queries the response was YES. Maximal size of possible extension queue 3229. Compared 1773729 event pairs, 74700 based on Foata normal form. 10615/149277 useless extension candidates. Maximal degree in co-relation 137619. Up to 103260 conditions per place. [2023-08-26 07:46:33,863 INFO L140 encePairwiseOnDemand]: 423/445 looper letters, 51 selfloop transitions, 0 changer transitions 0/146 dead transitions. [2023-08-26 07:46:33,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 146 transitions, 415 flow [2023-08-26 07:46:33,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 07:46:33,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 07:46:33,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 599 transitions. [2023-08-26 07:46:33,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6730337078651686 [2023-08-26 07:46:33,865 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 599 transitions. [2023-08-26 07:46:33,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 599 transitions. [2023-08-26 07:46:33,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:46:33,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 599 transitions. [2023-08-26 07:46:33,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 299.5) internal successors, (599), 2 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:33,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 445.0) internal successors, (1335), 3 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:33,868 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 445.0) internal successors, (1335), 3 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:33,869 INFO L175 Difference]: Start difference. First operand has 155 places, 168 transitions, 357 flow. Second operand 2 states and 599 transitions. [2023-08-26 07:46:33,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 146 transitions, 415 flow [2023-08-26 07:46:33,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 146 transitions, 409 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-26 07:46:33,871 INFO L231 Difference]: Finished difference. Result has 154 places, 146 transitions, 307 flow [2023-08-26 07:46:33,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=307, PETRI_PLACES=154, PETRI_TRANSITIONS=146} [2023-08-26 07:46:33,872 INFO L281 CegarLoopForPetriNet]: 155 programPoint places, -1 predicate places. [2023-08-26 07:46:33,872 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 146 transitions, 307 flow [2023-08-26 07:46:33,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 264.0) internal successors, (528), 2 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) [2023-08-26 07:46:33,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:46:33,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 07:46:33,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-26 07:46:33,873 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-26 07:46:33,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:46:33,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1724544, now seen corresponding path program 1 times [2023-08-26 07:46:33,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:46:33,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005197620] [2023-08-26 07:46:33,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:33,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:46:33,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:33,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:46:33,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:46:33,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005197620] [2023-08-26 07:46:33,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005197620] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:46:33,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:46:33,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:46:33,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108542332] [2023-08-26 07:46:33,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:46:33,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:46:33,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:46:33,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:46:33,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:46:33,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 445 [2023-08-26 07:46:33,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 146 transitions, 307 flow. Second operand has 3 states, 3 states have (on average 255.66666666666666) internal successors, (767), 3 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:33,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:46:33,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 445 [2023-08-26 07:46:33,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:46:46,651 INFO L124 PetriNetUnfolderBase]: 74700/157802 cut-off events. [2023-08-26 07:46:46,651 INFO L125 PetriNetUnfolderBase]: For 494/494 co-relation queries the response was YES. [2023-08-26 07:46:47,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261658 conditions, 157802 events. 74700/157802 cut-off events. For 494/494 co-relation queries the response was YES. Maximal size of possible extension queue 3338. Compared 1910179 event pairs, 48360 based on Foata normal form. 0/145249 useless extension candidates. Maximal degree in co-relation 261652. Up to 103236 conditions per place. [2023-08-26 07:46:47,746 INFO L140 encePairwiseOnDemand]: 442/445 looper letters, 63 selfloop transitions, 2 changer transitions 0/160 dead transitions. [2023-08-26 07:46:47,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 160 transitions, 465 flow [2023-08-26 07:46:47,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:46:47,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:46:47,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 831 transitions. [2023-08-26 07:46:47,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6224719101123596 [2023-08-26 07:46:47,748 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 831 transitions. [2023-08-26 07:46:47,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 831 transitions. [2023-08-26 07:46:47,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:46:47,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 831 transitions. [2023-08-26 07:46:47,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:47,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:47,752 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:47,753 INFO L175 Difference]: Start difference. First operand has 154 places, 146 transitions, 307 flow. Second operand 3 states and 831 transitions. [2023-08-26 07:46:47,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 160 transitions, 465 flow [2023-08-26 07:46:47,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 160 transitions, 465 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:46:47,756 INFO L231 Difference]: Finished difference. Result has 157 places, 147 transitions, 319 flow [2023-08-26 07:46:47,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=319, PETRI_PLACES=157, PETRI_TRANSITIONS=147} [2023-08-26 07:46:47,757 INFO L281 CegarLoopForPetriNet]: 155 programPoint places, 2 predicate places. [2023-08-26 07:46:47,757 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 147 transitions, 319 flow [2023-08-26 07:46:47,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.66666666666666) internal successors, (767), 3 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:47,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:46:47,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:46:47,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-26 07:46:47,757 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-26 07:46:47,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:46:47,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1238798422, now seen corresponding path program 1 times [2023-08-26 07:46:47,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:46:47,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015528192] [2023-08-26 07:46:47,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:47,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:46:47,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:47,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:46:47,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:46:47,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015528192] [2023-08-26 07:46:47,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015528192] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:46:47,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695701731] [2023-08-26 07:46:47,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:46:47,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:46:47,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:46:47,789 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:46:47,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-26 07:46:47,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:46:47,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:46:47,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:46:47,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 07:46:47,905 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 07:46:47,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695701731] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:46:47,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 07:46:47,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-26 07:46:47,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576741108] [2023-08-26 07:46:47,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:46:47,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:46:47,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:46:47,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:46:47,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 07:46:47,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 445 [2023-08-26 07:46:47,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 147 transitions, 319 flow. Second operand has 3 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:46:47,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:46:47,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 445 [2023-08-26 07:46:47,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:47:08,319 INFO L124 PetriNetUnfolderBase]: 149033/269486 cut-off events. [2023-08-26 07:47:08,319 INFO L125 PetriNetUnfolderBase]: For 10129/10129 co-relation queries the response was YES. [2023-08-26 07:47:09,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484378 conditions, 269486 events. 149033/269486 cut-off events. For 10129/10129 co-relation queries the response was YES. Maximal size of possible extension queue 5028. Compared 2952952 event pairs, 120781 based on Foata normal form. 0/255789 useless extension candidates. Maximal degree in co-relation 484370. Up to 204580 conditions per place. [2023-08-26 07:47:10,160 INFO L140 encePairwiseOnDemand]: 434/445 looper letters, 71 selfloop transitions, 4 changer transitions 0/153 dead transitions. [2023-08-26 07:47:10,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 153 transitions, 498 flow [2023-08-26 07:47:10,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:47:10,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:47:10,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 806 transitions. [2023-08-26 07:47:10,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6037453183520599 [2023-08-26 07:47:10,162 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 806 transitions. [2023-08-26 07:47:10,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 806 transitions. [2023-08-26 07:47:10,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:47:10,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 806 transitions. [2023-08-26 07:47:10,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 268.6666666666667) internal successors, (806), 3 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:47:10,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:47:10,166 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:47:10,166 INFO L175 Difference]: Start difference. First operand has 157 places, 147 transitions, 319 flow. Second operand 3 states and 806 transitions. [2023-08-26 07:47:10,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 153 transitions, 498 flow [2023-08-26 07:47:10,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 153 transitions, 495 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 07:47:10,170 INFO L231 Difference]: Finished difference. Result has 152 places, 144 transitions, 333 flow [2023-08-26 07:47:10,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=333, PETRI_PLACES=152, PETRI_TRANSITIONS=144} [2023-08-26 07:47:10,170 INFO L281 CegarLoopForPetriNet]: 155 programPoint places, -3 predicate places. [2023-08-26 07:47:10,170 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 144 transitions, 333 flow [2023-08-26 07:47:10,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:47:10,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:47:10,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:47:10,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-26 07:47:10,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-26 07:47:10,376 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-26 07:47:10,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:47:10,376 INFO L85 PathProgramCache]: Analyzing trace with hash 2065492754, now seen corresponding path program 1 times [2023-08-26 07:47:10,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:47:10,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706720214] [2023-08-26 07:47:10,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:47:10,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:47:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:47:10,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:47:10,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:47:10,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706720214] [2023-08-26 07:47:10,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706720214] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:47:10,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:47:10,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:47:10,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521470789] [2023-08-26 07:47:10,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:47:10,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:47:10,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:47:10,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:47:10,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 07:47:10,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 445 [2023-08-26 07:47:10,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 144 transitions, 333 flow. Second operand has 6 states, 6 states have (on average 172.83333333333334) internal successors, (1037), 6 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:47:10,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:47:10,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 445 [2023-08-26 07:47:10,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand