/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_02-simple_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 03:58:07,823 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 03:58:07,899 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-25 03:58:07,908 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 03:58:07,909 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 03:58:07,940 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 03:58:07,941 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 03:58:07,941 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 03:58:07,942 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 03:58:07,945 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 03:58:07,945 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 03:58:07,946 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 03:58:07,946 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 03:58:07,947 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 03:58:07,947 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 03:58:07,947 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 03:58:07,948 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 03:58:07,948 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 03:58:07,948 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 03:58:07,948 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 03:58:07,948 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 03:58:07,949 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 03:58:07,949 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 03:58:07,950 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 03:58:07,950 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 03:58:07,950 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 03:58:07,950 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 03:58:07,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 03:58:07,951 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 03:58:07,951 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 03:58:07,952 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 03:58:07,952 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 03:58:07,952 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 03:58:07,952 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 03:58:07,953 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 03:58:07,953 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 03:58:08,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 03:58:08,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 03:58:08,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 03:58:08,295 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 03:58:08,295 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 03:58:08,297 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_02-simple_racefree.i [2023-08-25 03:58:09,377 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 03:58:09,557 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 03:58:09,557 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_02-simple_racefree.i [2023-08-25 03:58:09,583 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/913a4be35/16eb662eed5f491fb633d5f72f20a4ad/FLAG5826c1f0e [2023-08-25 03:58:09,599 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/913a4be35/16eb662eed5f491fb633d5f72f20a4ad [2023-08-25 03:58:09,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 03:58:09,604 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 03:58:09,607 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 03:58:09,607 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 03:58:09,609 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 03:58:09,610 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 03:58:09" (1/1) ... [2023-08-25 03:58:09,611 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ed9d40d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:58:09, skipping insertion in model container [2023-08-25 03:58:09,611 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 03:58:09" (1/1) ... [2023-08-25 03:58:09,655 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 03:58:09,958 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 03:58:09,973 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 03:58:10,003 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 03:58:10,005 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 03:58:10,021 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 03:58:10,056 INFO L206 MainTranslator]: Completed translation [2023-08-25 03:58:10,056 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:58:10 WrapperNode [2023-08-25 03:58:10,057 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 03:58:10,058 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 03:58:10,058 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 03:58:10,058 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 03:58:10,063 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:58:10" (1/1) ... [2023-08-25 03:58:10,084 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:58:10" (1/1) ... [2023-08-25 03:58:10,105 INFO L138 Inliner]: procedures = 170, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 92 [2023-08-25 03:58:10,106 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 03:58:10,106 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 03:58:10,106 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 03:58:10,107 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 03:58:10,113 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:58:10" (1/1) ... [2023-08-25 03:58:10,113 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:58:10" (1/1) ... [2023-08-25 03:58:10,116 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:58:10" (1/1) ... [2023-08-25 03:58:10,116 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:58:10" (1/1) ... [2023-08-25 03:58:10,122 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:58:10" (1/1) ... [2023-08-25 03:58:10,125 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:58:10" (1/1) ... [2023-08-25 03:58:10,126 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:58:10" (1/1) ... [2023-08-25 03:58:10,127 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:58:10" (1/1) ... [2023-08-25 03:58:10,130 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 03:58:10,131 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 03:58:10,131 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 03:58:10,131 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 03:58:10,132 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:58:10" (1/1) ... [2023-08-25 03:58:10,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 03:58:10,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 03:58:10,166 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-25 03:58:10,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-25 03:58:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 03:58:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 03:58:10,199 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 03:58:10,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 03:58:10,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 03:58:10,200 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-25 03:58:10,200 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-25 03:58:10,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 03:58:10,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 03:58:10,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 03:58:10,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 03:58:10,202 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 03:58:10,329 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 03:58:10,331 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 03:58:10,589 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 03:58:10,596 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 03:58:10,596 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-25 03:58:10,598 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 03:58:10 BoogieIcfgContainer [2023-08-25 03:58:10,598 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 03:58:10,600 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 03:58:10,600 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 03:58:10,603 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 03:58:10,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 03:58:09" (1/3) ... [2023-08-25 03:58:10,603 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f1121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 03:58:10, skipping insertion in model container [2023-08-25 03:58:10,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:58:10" (2/3) ... [2023-08-25 03:58:10,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f1121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 03:58:10, skipping insertion in model container [2023-08-25 03:58:10,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 03:58:10" (3/3) ... [2023-08-25 03:58:10,606 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_02-simple_racefree.i [2023-08-25 03:58:10,620 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 03:58:10,621 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-25 03:58:10,621 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 03:58:10,704 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-25 03:58:10,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 139 transitions, 286 flow [2023-08-25 03:58:10,835 INFO L124 PetriNetUnfolderBase]: 19/187 cut-off events. [2023-08-25 03:58:10,836 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 03:58:10,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 187 events. 19/187 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 541 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 97. Up to 4 conditions per place. [2023-08-25 03:58:10,841 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 139 transitions, 286 flow [2023-08-25 03:58:10,850 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 139 transitions, 286 flow [2023-08-25 03:58:10,855 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 03:58:10,866 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 139 transitions, 286 flow [2023-08-25 03:58:10,869 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 139 transitions, 286 flow [2023-08-25 03:58:10,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 139 transitions, 286 flow [2023-08-25 03:58:10,920 INFO L124 PetriNetUnfolderBase]: 19/187 cut-off events. [2023-08-25 03:58:10,920 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 03:58:10,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 187 events. 19/187 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 541 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 97. Up to 4 conditions per place. [2023-08-25 03:58:10,926 INFO L119 LiptonReduction]: Number of co-enabled transitions 4752 [2023-08-25 03:58:13,891 INFO L134 LiptonReduction]: Checked pairs total: 12051 [2023-08-25 03:58:13,891 INFO L136 LiptonReduction]: Total number of compositions: 107 [2023-08-25 03:58:13,908 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 03:58:13,913 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;@70b6f275, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 03:58:13,913 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-25 03:58:13,916 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 03:58:13,916 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-08-25 03:58:13,916 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 03:58:13,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:58:13,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-25 03:58:13,917 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 9 more)] === [2023-08-25 03:58:13,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:58:13,920 INFO L85 PathProgramCache]: Analyzing trace with hash 15896534, now seen corresponding path program 1 times [2023-08-25 03:58:13,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:58:13,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822387221] [2023-08-25 03:58:13,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:58:13,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:58:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:58:14,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:58:14,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:58:14,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822387221] [2023-08-25 03:58:14,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822387221] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 03:58:14,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 03:58:14,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 03:58:14,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544808829] [2023-08-25 03:58:14,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 03:58:14,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 03:58:14,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:58:14,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 03:58:14,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 03:58:14,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 246 [2023-08-25 03:58:14,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 50 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:14,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:58:14,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 246 [2023-08-25 03:58:14,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:58:14,308 INFO L124 PetriNetUnfolderBase]: 120/360 cut-off events. [2023-08-25 03:58:14,308 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 03:58:14,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 637 conditions, 360 events. 120/360 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1734 event pairs, 99 based on Foata normal form. 48/353 useless extension candidates. Maximal degree in co-relation 613. Up to 255 conditions per place. [2023-08-25 03:58:14,315 INFO L140 encePairwiseOnDemand]: 233/246 looper letters, 35 selfloop transitions, 2 changer transitions 2/53 dead transitions. [2023-08-25 03:58:14,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 53 transitions, 192 flow [2023-08-25 03:58:14,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 03:58:14,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 03:58:14,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 404 transitions. [2023-08-25 03:58:14,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5474254742547425 [2023-08-25 03:58:14,335 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 404 transitions. [2023-08-25 03:58:14,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 404 transitions. [2023-08-25 03:58:14,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:58:14,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 404 transitions. [2023-08-25 03:58:14,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:14,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:14,355 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:14,357 INFO L175 Difference]: Start difference. First operand has 43 places, 50 transitions, 108 flow. Second operand 3 states and 404 transitions. [2023-08-25 03:58:14,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 53 transitions, 192 flow [2023-08-25 03:58:14,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 53 transitions, 192 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 03:58:14,362 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 89 flow [2023-08-25 03:58:14,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2023-08-25 03:58:14,367 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2023-08-25 03:58:14,367 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 89 flow [2023-08-25 03:58:14,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:14,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:58:14,368 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-25 03:58:14,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 03:58:14,368 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 9 more)] === [2023-08-25 03:58:14,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:58:14,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1906925423, now seen corresponding path program 1 times [2023-08-25 03:58:14,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:58:14,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323267218] [2023-08-25 03:58:14,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:58:14,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:58:14,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 03:58:14,426 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 03:58:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 03:58:14,454 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 03:58:14,454 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 03:58:14,455 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2023-08-25 03:58:14,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2023-08-25 03:58:14,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2023-08-25 03:58:14,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (8 of 12 remaining) [2023-08-25 03:58:14,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2023-08-25 03:58:14,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2023-08-25 03:58:14,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2023-08-25 03:58:14,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2023-08-25 03:58:14,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2023-08-25 03:58:14,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2023-08-25 03:58:14,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2023-08-25 03:58:14,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2023-08-25 03:58:14,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 03:58:14,459 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-25 03:58:14,461 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 03:58:14,461 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-25 03:58:14,486 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 03:58:14,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 185 transitions, 388 flow [2023-08-25 03:58:14,534 INFO L124 PetriNetUnfolderBase]: 34/312 cut-off events. [2023-08-25 03:58:14,534 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-25 03:58:14,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 312 events. 34/312 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1087 event pairs, 0 based on Foata normal form. 0/256 useless extension candidates. Maximal degree in co-relation 189. Up to 8 conditions per place. [2023-08-25 03:58:14,536 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 185 transitions, 388 flow [2023-08-25 03:58:14,539 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 185 transitions, 388 flow [2023-08-25 03:58:14,539 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 03:58:14,541 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 185 transitions, 388 flow [2023-08-25 03:58:14,541 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 185 transitions, 388 flow [2023-08-25 03:58:14,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 185 transitions, 388 flow [2023-08-25 03:58:14,576 INFO L124 PetriNetUnfolderBase]: 34/312 cut-off events. [2023-08-25 03:58:14,576 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-25 03:58:14,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 312 events. 34/312 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1087 event pairs, 0 based on Foata normal form. 0/256 useless extension candidates. Maximal degree in co-relation 189. Up to 8 conditions per place. [2023-08-25 03:58:14,586 INFO L119 LiptonReduction]: Number of co-enabled transitions 14344 [2023-08-25 03:58:17,534 INFO L134 LiptonReduction]: Checked pairs total: 52489 [2023-08-25 03:58:17,535 INFO L136 LiptonReduction]: Total number of compositions: 123 [2023-08-25 03:58:17,537 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 03:58:17,537 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;@70b6f275, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 03:58:17,538 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-25 03:58:17,540 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 03:58:17,540 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-08-25 03:58:17,540 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 03:58:17,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:58:17,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-25 03:58:17,541 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 13 more)] === [2023-08-25 03:58:17,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:58:17,541 INFO L85 PathProgramCache]: Analyzing trace with hash 26795959, now seen corresponding path program 1 times [2023-08-25 03:58:17,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:58:17,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123824880] [2023-08-25 03:58:17,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:58:17,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:58:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:58:17,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:58:17,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:58:17,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123824880] [2023-08-25 03:58:17,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123824880] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 03:58:17,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 03:58:17,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 03:58:17,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071084795] [2023-08-25 03:58:17,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 03:58:17,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 03:58:17,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:58:17,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 03:58:17,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 03:58:17,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 308 [2023-08-25 03:58:17,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 85 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:17,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:58:17,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 308 [2023-08-25 03:58:17,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:58:18,124 INFO L124 PetriNetUnfolderBase]: 2702/5880 cut-off events. [2023-08-25 03:58:18,124 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2023-08-25 03:58:18,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10312 conditions, 5880 events. 2702/5880 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 47583 event pairs, 1250 based on Foata normal form. 835/5884 useless extension candidates. Maximal degree in co-relation 890. Up to 4335 conditions per place. [2023-08-25 03:58:18,155 INFO L140 encePairwiseOnDemand]: 289/308 looper letters, 47 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-08-25 03:58:18,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 81 transitions, 278 flow [2023-08-25 03:58:18,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 03:58:18,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 03:58:18,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 534 transitions. [2023-08-25 03:58:18,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.577922077922078 [2023-08-25 03:58:18,157 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 534 transitions. [2023-08-25 03:58:18,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 534 transitions. [2023-08-25 03:58:18,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:58:18,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 534 transitions. [2023-08-25 03:58:18,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:18,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:18,162 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:18,162 INFO L175 Difference]: Start difference. First operand has 73 places, 85 transitions, 188 flow. Second operand 3 states and 534 transitions. [2023-08-25 03:58:18,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 81 transitions, 278 flow [2023-08-25 03:58:18,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 81 transitions, 278 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 03:58:18,165 INFO L231 Difference]: Finished difference. Result has 75 places, 70 transitions, 168 flow [2023-08-25 03:58:18,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=75, PETRI_TRANSITIONS=70} [2023-08-25 03:58:18,166 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 2 predicate places. [2023-08-25 03:58:18,166 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 70 transitions, 168 flow [2023-08-25 03:58:18,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:18,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:58:18,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 03:58:18,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 03:58:18,170 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 13 more)] === [2023-08-25 03:58:18,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:58:18,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1230008175, now seen corresponding path program 1 times [2023-08-25 03:58:18,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:58:18,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381480559] [2023-08-25 03:58:18,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:58:18,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:58:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:58:18,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:58:18,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:58:18,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381480559] [2023-08-25 03:58:18,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381480559] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 03:58:18,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 03:58:18,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 03:58:18,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569183745] [2023-08-25 03:58:18,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 03:58:18,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 03:58:18,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:58:18,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 03:58:18,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 03:58:18,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 308 [2023-08-25 03:58:18,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 70 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:18,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:58:18,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 308 [2023-08-25 03:58:18,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:58:20,016 INFO L124 PetriNetUnfolderBase]: 14181/23765 cut-off events. [2023-08-25 03:58:20,016 INFO L125 PetriNetUnfolderBase]: For 1105/1105 co-relation queries the response was YES. [2023-08-25 03:58:20,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47566 conditions, 23765 events. 14181/23765 cut-off events. For 1105/1105 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 175837 event pairs, 5129 based on Foata normal form. 0/18915 useless extension candidates. Maximal degree in co-relation 47450. Up to 12133 conditions per place. [2023-08-25 03:58:20,152 INFO L140 encePairwiseOnDemand]: 289/308 looper letters, 93 selfloop transitions, 14 changer transitions 0/120 dead transitions. [2023-08-25 03:58:20,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 120 transitions, 500 flow [2023-08-25 03:58:20,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 03:58:20,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 03:58:20,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2023-08-25 03:58:20,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5573593073593074 [2023-08-25 03:58:20,155 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 515 transitions. [2023-08-25 03:58:20,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 515 transitions. [2023-08-25 03:58:20,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:58:20,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 515 transitions. [2023-08-25 03:58:20,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:20,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:20,160 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:20,160 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 168 flow. Second operand 3 states and 515 transitions. [2023-08-25 03:58:20,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 120 transitions, 500 flow [2023-08-25 03:58:20,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 120 transitions, 497 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 03:58:20,166 INFO L231 Difference]: Finished difference. Result has 78 places, 84 transitions, 288 flow [2023-08-25 03:58:20,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=78, PETRI_TRANSITIONS=84} [2023-08-25 03:58:20,168 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 5 predicate places. [2023-08-25 03:58:20,168 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 84 transitions, 288 flow [2023-08-25 03:58:20,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:20,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:58:20,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 03:58:20,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 03:58:20,169 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 13 more)] === [2023-08-25 03:58:20,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:58:20,170 INFO L85 PathProgramCache]: Analyzing trace with hash -663910868, now seen corresponding path program 1 times [2023-08-25 03:58:20,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:58:20,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121129687] [2023-08-25 03:58:20,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:58:20,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:58:20,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:58:20,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:58:20,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:58:20,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121129687] [2023-08-25 03:58:20,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121129687] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 03:58:20,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481915636] [2023-08-25 03:58:20,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:58:20,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 03:58:20,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 03:58:20,249 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 03:58:20,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-25 03:58:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:58:20,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 03:58:20,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 03:58:20,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:58:20,413 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 03:58:20,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:58:20,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481915636] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 03:58:20,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 03:58:20,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-25 03:58:20,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703141110] [2023-08-25 03:58:20,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 03:58:20,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 03:58:20,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:58:20,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 03:58:20,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-25 03:58:20,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 308 [2023-08-25 03:58:20,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 84 transitions, 288 flow. Second operand has 7 states, 7 states have (on average 156.28571428571428) internal successors, (1094), 7 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:20,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:58:20,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 308 [2023-08-25 03:58:20,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:58:20,738 INFO L124 PetriNetUnfolderBase]: 987/2234 cut-off events. [2023-08-25 03:58:20,739 INFO L125 PetriNetUnfolderBase]: For 1120/1147 co-relation queries the response was YES. [2023-08-25 03:58:20,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5151 conditions, 2234 events. 987/2234 cut-off events. For 1120/1147 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 15493 event pairs, 241 based on Foata normal form. 234/2391 useless extension candidates. Maximal degree in co-relation 1541. Up to 1159 conditions per place. [2023-08-25 03:58:20,752 INFO L140 encePairwiseOnDemand]: 305/308 looper letters, 61 selfloop transitions, 3 changer transitions 0/101 dead transitions. [2023-08-25 03:58:20,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 101 transitions, 458 flow [2023-08-25 03:58:20,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 03:58:20,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 03:58:20,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 830 transitions. [2023-08-25 03:58:20,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.538961038961039 [2023-08-25 03:58:20,754 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 830 transitions. [2023-08-25 03:58:20,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 830 transitions. [2023-08-25 03:58:20,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:58:20,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 830 transitions. [2023-08-25 03:58:20,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:20,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 308.0) internal successors, (1848), 6 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:20,760 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 308.0) internal successors, (1848), 6 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:20,760 INFO L175 Difference]: Start difference. First operand has 78 places, 84 transitions, 288 flow. Second operand 5 states and 830 transitions. [2023-08-25 03:58:20,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 101 transitions, 458 flow [2023-08-25 03:58:20,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 101 transitions, 420 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-25 03:58:20,764 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 210 flow [2023-08-25 03:58:20,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=210, PETRI_PLACES=66, PETRI_TRANSITIONS=66} [2023-08-25 03:58:20,765 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -7 predicate places. [2023-08-25 03:58:20,765 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 210 flow [2023-08-25 03:58:20,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 156.28571428571428) internal successors, (1094), 7 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:20,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:58:20,766 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-25 03:58:20,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-25 03:58:20,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 03:58:20,971 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 13 more)] === [2023-08-25 03:58:20,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:58:20,972 INFO L85 PathProgramCache]: Analyzing trace with hash 376774548, now seen corresponding path program 1 times [2023-08-25 03:58:20,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:58:20,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357694798] [2023-08-25 03:58:20,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:58:20,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:58:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 03:58:20,985 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 03:58:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 03:58:20,997 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 03:58:20,997 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 03:58:20,997 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2023-08-25 03:58:20,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2023-08-25 03:58:20,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2023-08-25 03:58:20,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (12 of 16 remaining) [2023-08-25 03:58:20,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2023-08-25 03:58:20,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2023-08-25 03:58:20,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2023-08-25 03:58:20,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2023-08-25 03:58:20,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2023-08-25 03:58:20,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2023-08-25 03:58:20,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2023-08-25 03:58:20,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2023-08-25 03:58:20,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2023-08-25 03:58:20,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2023-08-25 03:58:20,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2023-08-25 03:58:20,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2023-08-25 03:58:21,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 03:58:21,000 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-25 03:58:21,000 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 03:58:21,000 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-25 03:58:21,019 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-25 03:58:21,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 231 transitions, 492 flow [2023-08-25 03:58:21,077 INFO L124 PetriNetUnfolderBase]: 54/482 cut-off events. [2023-08-25 03:58:21,077 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-25 03:58:21,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 510 conditions, 482 events. 54/482 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1865 event pairs, 1 based on Foata normal form. 0/396 useless extension candidates. Maximal degree in co-relation 320. Up to 16 conditions per place. [2023-08-25 03:58:21,083 INFO L82 GeneralOperation]: Start removeDead. Operand has 211 places, 231 transitions, 492 flow [2023-08-25 03:58:21,086 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 211 places, 231 transitions, 492 flow [2023-08-25 03:58:21,086 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 03:58:21,086 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 211 places, 231 transitions, 492 flow [2023-08-25 03:58:21,087 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 211 places, 231 transitions, 492 flow [2023-08-25 03:58:21,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 231 transitions, 492 flow [2023-08-25 03:58:21,134 INFO L124 PetriNetUnfolderBase]: 54/482 cut-off events. [2023-08-25 03:58:21,134 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-25 03:58:21,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 510 conditions, 482 events. 54/482 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1865 event pairs, 1 based on Foata normal form. 0/396 useless extension candidates. Maximal degree in co-relation 320. Up to 16 conditions per place. [2023-08-25 03:58:21,156 INFO L119 LiptonReduction]: Number of co-enabled transitions 27720 [2023-08-25 03:58:24,110 INFO L134 LiptonReduction]: Checked pairs total: 113478 [2023-08-25 03:58:24,110 INFO L136 LiptonReduction]: Total number of compositions: 148 [2023-08-25 03:58:24,112 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 03:58:24,112 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;@70b6f275, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 03:58:24,112 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-25 03:58:24,114 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 03:58:24,114 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-25 03:58:24,114 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 03:58:24,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:58:24,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-25 03:58:24,114 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 17 more)] === [2023-08-25 03:58:24,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:58:24,115 INFO L85 PathProgramCache]: Analyzing trace with hash 39869171, now seen corresponding path program 1 times [2023-08-25 03:58:24,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:58:24,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308339620] [2023-08-25 03:58:24,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:58:24,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:58:24,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:58:24,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:58:24,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:58:24,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308339620] [2023-08-25 03:58:24,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308339620] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 03:58:24,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 03:58:24,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 03:58:24,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690038089] [2023-08-25 03:58:24,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 03:58:24,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 03:58:24,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:58:24,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 03:58:24,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 03:58:24,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 379 [2023-08-25 03:58:24,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 116 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:24,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:58:24,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 379 [2023-08-25 03:58:24,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:58:29,129 INFO L124 PetriNetUnfolderBase]: 43367/72866 cut-off events. [2023-08-25 03:58:29,129 INFO L125 PetriNetUnfolderBase]: For 1379/1379 co-relation queries the response was YES. [2023-08-25 03:58:29,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134536 conditions, 72866 events. 43367/72866 cut-off events. For 1379/1379 co-relation queries the response was YES. Maximal size of possible extension queue 1816. Compared 661295 event pairs, 40167 based on Foata normal form. 10349/75005 useless extension candidates. Maximal degree in co-relation 56286. Up to 60642 conditions per place. [2023-08-25 03:58:29,517 INFO L140 encePairwiseOnDemand]: 354/379 looper letters, 58 selfloop transitions, 2 changer transitions 0/105 dead transitions. [2023-08-25 03:58:29,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 105 transitions, 360 flow [2023-08-25 03:58:29,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 03:58:29,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 03:58:29,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 665 transitions. [2023-08-25 03:58:29,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5848724714160071 [2023-08-25 03:58:29,525 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 665 transitions. [2023-08-25 03:58:29,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 665 transitions. [2023-08-25 03:58:29,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:58:29,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 665 transitions. [2023-08-25 03:58:29,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:29,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 379.0) internal successors, (1516), 4 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:29,530 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 379.0) internal successors, (1516), 4 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:29,530 INFO L175 Difference]: Start difference. First operand has 99 places, 116 transitions, 262 flow. Second operand 3 states and 665 transitions. [2023-08-25 03:58:29,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 105 transitions, 360 flow [2023-08-25 03:58:29,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 105 transitions, 360 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 03:58:29,535 INFO L231 Difference]: Finished difference. Result has 100 places, 94 transitions, 228 flow [2023-08-25 03:58:29,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=100, PETRI_TRANSITIONS=94} [2023-08-25 03:58:29,537 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 1 predicate places. [2023-08-25 03:58:29,537 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 94 transitions, 228 flow [2023-08-25 03:58:29,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:29,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:58:29,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 03:58:29,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 03:58:29,537 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 17 more)] === [2023-08-25 03:58:29,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:58:29,538 INFO L85 PathProgramCache]: Analyzing trace with hash -840020641, now seen corresponding path program 1 times [2023-08-25 03:58:29,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:58:29,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493112630] [2023-08-25 03:58:29,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:58:29,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:58:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:58:29,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:58:29,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:58:29,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493112630] [2023-08-25 03:58:29,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493112630] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 03:58:29,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 03:58:29,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 03:58:29,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789644011] [2023-08-25 03:58:29,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 03:58:29,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 03:58:29,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:58:29,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 03:58:29,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 03:58:29,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 379 [2023-08-25 03:58:29,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 94 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:58:29,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:58:29,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 379 [2023-08-25 03:58:29,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:59:05,336 INFO L124 PetriNetUnfolderBase]: 442040/644113 cut-off events. [2023-08-25 03:59:05,336 INFO L125 PetriNetUnfolderBase]: For 28894/28894 co-relation queries the response was YES. [2023-08-25 03:59:06,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1287272 conditions, 644113 events. 442040/644113 cut-off events. For 28894/28894 co-relation queries the response was YES. Maximal size of possible extension queue 10619. Compared 5616418 event pairs, 178250 based on Foata normal form. 0/527558 useless extension candidates. Maximal degree in co-relation 1287150. Up to 320586 conditions per place. [2023-08-25 03:59:09,032 INFO L140 encePairwiseOnDemand]: 352/379 looper letters, 123 selfloop transitions, 20 changer transitions 0/161 dead transitions. [2023-08-25 03:59:09,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 161 transitions, 676 flow [2023-08-25 03:59:09,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 03:59:09,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 03:59:09,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 631 transitions. [2023-08-25 03:59:09,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5549692172383466 [2023-08-25 03:59:09,034 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 631 transitions. [2023-08-25 03:59:09,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 631 transitions. [2023-08-25 03:59:09,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:59:09,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 631 transitions. [2023-08-25 03:59:09,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:09,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 379.0) internal successors, (1516), 4 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:09,038 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 379.0) internal successors, (1516), 4 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:09,038 INFO L175 Difference]: Start difference. First operand has 100 places, 94 transitions, 228 flow. Second operand 3 states and 631 transitions. [2023-08-25 03:59:09,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 161 transitions, 676 flow [2023-08-25 03:59:09,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 161 transitions, 673 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 03:59:09,073 INFO L231 Difference]: Finished difference. Result has 103 places, 114 transitions, 400 flow [2023-08-25 03:59:09,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=400, PETRI_PLACES=103, PETRI_TRANSITIONS=114} [2023-08-25 03:59:09,074 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 4 predicate places. [2023-08-25 03:59:09,074 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 114 transitions, 400 flow [2023-08-25 03:59:09,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:09,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:59:09,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 03:59:09,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 03:59:09,075 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 17 more)] === [2023-08-25 03:59:09,075 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:59:09,075 INFO L85 PathProgramCache]: Analyzing trace with hash 228955231, now seen corresponding path program 1 times [2023-08-25 03:59:09,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:59:09,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680463827] [2023-08-25 03:59:09,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:59:09,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:59:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:59:09,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:59:09,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:59:09,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680463827] [2023-08-25 03:59:09,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680463827] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 03:59:09,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231034936] [2023-08-25 03:59:09,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:59:09,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 03:59:09,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 03:59:09,124 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 03:59:09,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-25 03:59:09,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:59:09,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 03:59:09,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 03:59:09,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:59:09,209 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 03:59:09,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:59:09,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231034936] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 03:59:09,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 03:59:09,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-25 03:59:09,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127587227] [2023-08-25 03:59:09,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 03:59:09,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 03:59:09,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:59:09,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 03:59:09,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-25 03:59:09,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 379 [2023-08-25 03:59:09,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 114 transitions, 400 flow. Second operand has 7 states, 7 states have (on average 194.28571428571428) internal successors, (1360), 7 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:09,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:59:09,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 379 [2023-08-25 03:59:09,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:59:11,466 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1157] L702-19-->L702-21: Formula: (= (+ v_~global~0_65 1) |v_t_funThread3of3ForFork0_#t~post8_9|) InVars {t_funThread3of3ForFork0_#t~post8=|v_t_funThread3of3ForFork0_#t~post8_9|} OutVars{t_funThread3of3ForFork0_#t~nondet9=|v_t_funThread3of3ForFork0_#t~nondet9_15|, t_funThread3of3ForFork0_#t~post8=|v_t_funThread3of3ForFork0_#t~post8_9|, ~global~0=v_~global~0_65} AuxVars[] AssignedVars[t_funThread3of3ForFork0_#t~nondet9, ~global~0][135], [Black: 219#true, 38#L702-21true, t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0InUse, 28#L707-7true, 221#(= |#race~global~0| 0), 168#L702-3true, Black: 216#(= |ULTIMATE.start_main_~i~0#1| 0), 272#(< |ULTIMATE.start_main_~i~0#1| 10000), 119#L702-21true]) [2023-08-25 03:59:11,467 INFO L294 olderBase$Statistics]: this new event has 48 ancestors and is cut-off event [2023-08-25 03:59:11,467 INFO L297 olderBase$Statistics]: existing Event has 48 ancestors and is cut-off event [2023-08-25 03:59:11,467 INFO L297 olderBase$Statistics]: existing Event has 48 ancestors and is cut-off event [2023-08-25 03:59:11,467 INFO L297 olderBase$Statistics]: existing Event has 48 ancestors and is cut-off event [2023-08-25 03:59:11,569 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1157] L702-19-->L702-21: Formula: (= (+ v_~global~0_65 1) |v_t_funThread3of3ForFork0_#t~post8_9|) InVars {t_funThread3of3ForFork0_#t~post8=|v_t_funThread3of3ForFork0_#t~post8_9|} OutVars{t_funThread3of3ForFork0_#t~nondet9=|v_t_funThread3of3ForFork0_#t~nondet9_15|, t_funThread3of3ForFork0_#t~post8=|v_t_funThread3of3ForFork0_#t~post8_9|, ~global~0=v_~global~0_65} AuxVars[] AssignedVars[t_funThread3of3ForFork0_#t~nondet9, ~global~0][135], [38#L702-21true, Black: 219#true, 75#L702-4true, t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0InUse, 221#(= |#race~global~0| 0), 28#L707-7true, Black: 216#(= |ULTIMATE.start_main_~i~0#1| 0), 272#(< |ULTIMATE.start_main_~i~0#1| 10000), 119#L702-21true]) [2023-08-25 03:59:11,569 INFO L294 olderBase$Statistics]: this new event has 49 ancestors and is cut-off event [2023-08-25 03:59:11,569 INFO L297 olderBase$Statistics]: existing Event has 49 ancestors and is cut-off event [2023-08-25 03:59:11,569 INFO L297 olderBase$Statistics]: existing Event has 49 ancestors and is cut-off event [2023-08-25 03:59:11,569 INFO L297 olderBase$Statistics]: existing Event has 49 ancestors and is cut-off event [2023-08-25 03:59:11,915 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1145] L702-8-->L702-10: Formula: (= |v_#race~global~0_49| |v_t_funThread2of3ForFork0_#t~nondet6_13|) InVars {t_funThread2of3ForFork0_#t~nondet6=|v_t_funThread2of3ForFork0_#t~nondet6_13|, #race~global~0=|v_#race~global~0_49|} OutVars{t_funThread2of3ForFork0_#t~post5=|v_t_funThread2of3ForFork0_#t~post5_9|, t_funThread2of3ForFork0_#t~nondet6=|v_t_funThread2of3ForFork0_#t~nondet6_13|, #race~global~0=|v_#race~global~0_49|} AuxVars[] AssignedVars[t_funThread2of3ForFork0_#t~post5][94], [60#L702-18true, t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0InUse, 147#L702-10true, t_funThread3of3ForFork0InUse, 28#L707-7true, Black: 216#(= |ULTIMATE.start_main_~i~0#1| 0), 219#true, 272#(< |ULTIMATE.start_main_~i~0#1| 10000), 119#L702-21true, Black: 221#(= |#race~global~0| 0)]) [2023-08-25 03:59:11,915 INFO L294 olderBase$Statistics]: this new event has 51 ancestors and is cut-off event [2023-08-25 03:59:11,915 INFO L297 olderBase$Statistics]: existing Event has 51 ancestors and is cut-off event [2023-08-25 03:59:11,915 INFO L297 olderBase$Statistics]: existing Event has 51 ancestors and is cut-off event [2023-08-25 03:59:11,915 INFO L297 olderBase$Statistics]: existing Event has 51 ancestors and is cut-off event [2023-08-25 03:59:12,031 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1157] L702-19-->L702-21: Formula: (= (+ v_~global~0_65 1) |v_t_funThread3of3ForFork0_#t~post8_9|) InVars {t_funThread3of3ForFork0_#t~post8=|v_t_funThread3of3ForFork0_#t~post8_9|} OutVars{t_funThread3of3ForFork0_#t~nondet9=|v_t_funThread3of3ForFork0_#t~nondet9_15|, t_funThread3of3ForFork0_#t~post8=|v_t_funThread3of3ForFork0_#t~post8_9|, ~global~0=v_~global~0_65} AuxVars[] AssignedVars[t_funThread3of3ForFork0_#t~nondet9, ~global~0][135], [38#L702-21true, Black: 219#true, t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0InUse, 28#L707-7true, 221#(= |#race~global~0| 0), 96#L702-7true, Black: 216#(= |ULTIMATE.start_main_~i~0#1| 0), 272#(< |ULTIMATE.start_main_~i~0#1| 10000), 119#L702-21true]) [2023-08-25 03:59:12,031 INFO L294 olderBase$Statistics]: this new event has 51 ancestors and is cut-off event [2023-08-25 03:59:12,031 INFO L297 olderBase$Statistics]: existing Event has 51 ancestors and is cut-off event [2023-08-25 03:59:12,031 INFO L297 olderBase$Statistics]: existing Event has 51 ancestors and is cut-off event [2023-08-25 03:59:12,032 INFO L297 olderBase$Statistics]: existing Event has 51 ancestors and is cut-off event [2023-08-25 03:59:12,525 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1156] L702-20-->L702-22: Formula: (= |v_#race~global~0_51| |v_t_funThread2of3ForFork0_#t~nondet9_15|) InVars {} OutVars{t_funThread2of3ForFork0_#t~nondet9=|v_t_funThread2of3ForFork0_#t~nondet9_15|, #race~global~0=|v_#race~global~0_51|} AuxVars[] AssignedVars[t_funThread2of3ForFork0_#t~nondet9, #race~global~0][139], [t_funThread1of3ForFork0InUse, 201#L702-22true, t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0InUse, 28#L707-7true, Black: 216#(= |ULTIMATE.start_main_~i~0#1| 0), 144#t_funErr2ASSERT_VIOLATIONDATA_RACEtrue, 219#true, 272#(< |ULTIMATE.start_main_~i~0#1| 10000), 119#L702-21true, Black: 221#(= |#race~global~0| 0)]) [2023-08-25 03:59:12,526 INFO L294 olderBase$Statistics]: this new event has 58 ancestors and is cut-off event [2023-08-25 03:59:12,526 INFO L297 olderBase$Statistics]: existing Event has 58 ancestors and is cut-off event [2023-08-25 03:59:12,526 INFO L297 olderBase$Statistics]: existing Event has 58 ancestors and is cut-off event [2023-08-25 03:59:12,526 INFO L297 olderBase$Statistics]: existing Event has 58 ancestors and is cut-off event [2023-08-25 03:59:12,954 INFO L124 PetriNetUnfolderBase]: 31838/56797 cut-off events. [2023-08-25 03:59:12,954 INFO L125 PetriNetUnfolderBase]: For 38787/39843 co-relation queries the response was YES. [2023-08-25 03:59:13,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139658 conditions, 56797 events. 31838/56797 cut-off events. For 38787/39843 co-relation queries the response was YES. Maximal size of possible extension queue 1768. Compared 546774 event pairs, 5045 based on Foata normal form. 5305/58565 useless extension candidates. Maximal degree in co-relation 17146. Up to 32506 conditions per place. [2023-08-25 03:59:13,244 INFO L140 encePairwiseOnDemand]: 376/379 looper letters, 111 selfloop transitions, 4 changer transitions 0/169 dead transitions. [2023-08-25 03:59:13,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 169 transitions, 779 flow [2023-08-25 03:59:13,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 03:59:13,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 03:59:13,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1256 transitions. [2023-08-25 03:59:13,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5523306948109059 [2023-08-25 03:59:13,250 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1256 transitions. [2023-08-25 03:59:13,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1256 transitions. [2023-08-25 03:59:13,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:59:13,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1256 transitions. [2023-08-25 03:59:13,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 209.33333333333334) internal successors, (1256), 6 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:13,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 379.0) internal successors, (2653), 7 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:13,257 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 379.0) internal successors, (2653), 7 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:13,257 INFO L175 Difference]: Start difference. First operand has 103 places, 114 transitions, 400 flow. Second operand 6 states and 1256 transitions. [2023-08-25 03:59:13,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 169 transitions, 779 flow [2023-08-25 03:59:13,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 169 transitions, 715 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-25 03:59:13,305 INFO L231 Difference]: Finished difference. Result has 93 places, 97 transitions, 309 flow [2023-08-25 03:59:13,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=309, PETRI_PLACES=93, PETRI_TRANSITIONS=97} [2023-08-25 03:59:13,306 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -6 predicate places. [2023-08-25 03:59:13,306 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 97 transitions, 309 flow [2023-08-25 03:59:13,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 194.28571428571428) internal successors, (1360), 7 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:13,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:59:13,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 03:59:13,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-25 03:59:13,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-08-25 03:59:13,511 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 17 more)] === [2023-08-25 03:59:13,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:59:13,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1799924259, now seen corresponding path program 1 times [2023-08-25 03:59:13,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:59:13,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30532779] [2023-08-25 03:59:13,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:59:13,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:59:13,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:59:13,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:59:13,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:59:13,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30532779] [2023-08-25 03:59:13,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30532779] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 03:59:13,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 03:59:13,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 03:59:13,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347814443] [2023-08-25 03:59:13,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 03:59:13,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 03:59:13,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:59:13,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 03:59:13,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 03:59:13,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 379 [2023-08-25 03:59:13,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 97 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:13,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:59:13,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 379 [2023-08-25 03:59:13,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:59:20,611 INFO L124 PetriNetUnfolderBase]: 86210/126557 cut-off events. [2023-08-25 03:59:20,611 INFO L125 PetriNetUnfolderBase]: For 58330/58885 co-relation queries the response was YES. [2023-08-25 03:59:20,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313583 conditions, 126557 events. 86210/126557 cut-off events. For 58330/58885 co-relation queries the response was YES. Maximal size of possible extension queue 2713. Compared 963214 event pairs, 60749 based on Foata normal form. 0/109826 useless extension candidates. Maximal degree in co-relation 288313. Up to 110036 conditions per place. [2023-08-25 03:59:21,253 INFO L140 encePairwiseOnDemand]: 367/379 looper letters, 118 selfloop transitions, 20 changer transitions 0/154 dead transitions. [2023-08-25 03:59:21,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 154 transitions, 777 flow [2023-08-25 03:59:21,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 03:59:21,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 03:59:21,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 582 transitions. [2023-08-25 03:59:21,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5118733509234829 [2023-08-25 03:59:21,255 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 582 transitions. [2023-08-25 03:59:21,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 582 transitions. [2023-08-25 03:59:21,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:59:21,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 582 transitions. [2023-08-25 03:59:21,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:21,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 379.0) internal successors, (1516), 4 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:21,274 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 379.0) internal successors, (1516), 4 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:21,275 INFO L175 Difference]: Start difference. First operand has 93 places, 97 transitions, 309 flow. Second operand 3 states and 582 transitions. [2023-08-25 03:59:21,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 154 transitions, 777 flow [2023-08-25 03:59:21,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 154 transitions, 762 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-25 03:59:21,328 INFO L231 Difference]: Finished difference. Result has 94 places, 115 transitions, 486 flow [2023-08-25 03:59:21,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=486, PETRI_PLACES=94, PETRI_TRANSITIONS=115} [2023-08-25 03:59:21,328 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -5 predicate places. [2023-08-25 03:59:21,328 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 115 transitions, 486 flow [2023-08-25 03:59:21,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:21,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:59:21,329 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-25 03:59:21,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-25 03:59:21,329 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 17 more)] === [2023-08-25 03:59:21,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:59:21,330 INFO L85 PathProgramCache]: Analyzing trace with hash -878718319, now seen corresponding path program 1 times [2023-08-25 03:59:21,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:59:21,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40937659] [2023-08-25 03:59:21,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:59:21,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:59:21,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 03:59:21,342 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 03:59:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 03:59:21,354 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 03:59:21,354 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 03:59:21,354 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 20 remaining) [2023-08-25 03:59:21,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 20 remaining) [2023-08-25 03:59:21,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 20 remaining) [2023-08-25 03:59:21,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (16 of 20 remaining) [2023-08-25 03:59:21,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (15 of 20 remaining) [2023-08-25 03:59:21,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (14 of 20 remaining) [2023-08-25 03:59:21,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (13 of 20 remaining) [2023-08-25 03:59:21,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (12 of 20 remaining) [2023-08-25 03:59:21,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 20 remaining) [2023-08-25 03:59:21,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 20 remaining) [2023-08-25 03:59:21,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 20 remaining) [2023-08-25 03:59:21,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 20 remaining) [2023-08-25 03:59:21,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 20 remaining) [2023-08-25 03:59:21,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 20 remaining) [2023-08-25 03:59:21,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 20 remaining) [2023-08-25 03:59:21,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 20 remaining) [2023-08-25 03:59:21,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 20 remaining) [2023-08-25 03:59:21,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 20 remaining) [2023-08-25 03:59:21,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 20 remaining) [2023-08-25 03:59:21,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 20 remaining) [2023-08-25 03:59:21,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-25 03:59:21,356 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-25 03:59:21,356 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 03:59:21,357 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-25 03:59:21,378 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-25 03:59:21,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 252 places, 277 transitions, 598 flow [2023-08-25 03:59:21,461 INFO L124 PetriNetUnfolderBase]: 86/744 cut-off events. [2023-08-25 03:59:21,462 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-25 03:59:21,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 799 conditions, 744 events. 86/744 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3257 event pairs, 6 based on Foata normal form. 0/616 useless extension candidates. Maximal degree in co-relation 502. Up to 32 conditions per place. [2023-08-25 03:59:21,471 INFO L82 GeneralOperation]: Start removeDead. Operand has 252 places, 277 transitions, 598 flow [2023-08-25 03:59:21,475 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 252 places, 277 transitions, 598 flow [2023-08-25 03:59:21,476 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 03:59:21,476 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 252 places, 277 transitions, 598 flow [2023-08-25 03:59:21,476 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 252 places, 277 transitions, 598 flow [2023-08-25 03:59:21,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 252 places, 277 transitions, 598 flow [2023-08-25 03:59:21,543 INFO L124 PetriNetUnfolderBase]: 86/744 cut-off events. [2023-08-25 03:59:21,544 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-25 03:59:21,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 799 conditions, 744 events. 86/744 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3257 event pairs, 6 based on Foata normal form. 0/616 useless extension candidates. Maximal degree in co-relation 502. Up to 32 conditions per place. [2023-08-25 03:59:21,572 INFO L119 LiptonReduction]: Number of co-enabled transitions 45232 [2023-08-25 03:59:24,527 INFO L134 LiptonReduction]: Checked pairs total: 173260 [2023-08-25 03:59:24,527 INFO L136 LiptonReduction]: Total number of compositions: 161 [2023-08-25 03:59:24,529 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 03:59:24,529 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;@70b6f275, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 03:59:24,529 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-08-25 03:59:24,530 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 03:59:24,530 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-08-25 03:59:24,531 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 03:59:24,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:59:24,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-25 03:59:24,531 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 21 more)] === [2023-08-25 03:59:24,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:59:24,531 INFO L85 PathProgramCache]: Analyzing trace with hash 54774428, now seen corresponding path program 1 times [2023-08-25 03:59:24,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:59:24,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675318956] [2023-08-25 03:59:24,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:59:24,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:59:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:59:24,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:59:24,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:59:24,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675318956] [2023-08-25 03:59:24,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675318956] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 03:59:24,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 03:59:24,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 03:59:24,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413731761] [2023-08-25 03:59:24,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 03:59:24,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 03:59:24,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:59:24,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 03:59:24,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 03:59:24,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 438 [2023-08-25 03:59:24,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 149 transitions, 342 flow. Second operand has 3 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 03:59:24,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:59:24,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 438 [2023-08-25 03:59:24,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:00:54,482 INFO L124 PetriNetUnfolderBase]: 724780/1071990 cut-off events. [2023-08-25 04:00:54,483 INFO L125 PetriNetUnfolderBase]: For 25076/25076 co-relation queries the response was YES. [2023-08-25 04:00:59,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2024615 conditions, 1071990 events. 724780/1071990 cut-off events. For 25076/25076 co-relation queries the response was YES. Maximal size of possible extension queue 20530. Compared 10632765 event pairs, 704131 based on Foata normal form. 234297/1194518 useless extension candidates. Maximal degree in co-relation 356903. Up to 938009 conditions per place. [2023-08-25 04:01:05,886 INFO L140 encePairwiseOnDemand]: 406/438 looper letters, 71 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2023-08-25 04:01:05,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 131 transitions, 452 flow [2023-08-25 04:01:05,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:01:05,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:01:05,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 799 transitions. [2023-08-25 04:01:05,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6080669710806698 [2023-08-25 04:01:05,894 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 799 transitions. [2023-08-25 04:01:05,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 799 transitions. [2023-08-25 04:01:05,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:01:05,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 799 transitions. [2023-08-25 04:01:05,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:01:05,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:01:05,914 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:01:05,914 INFO L175 Difference]: Start difference. First operand has 126 places, 149 transitions, 342 flow. Second operand 3 states and 799 transitions. [2023-08-25 04:01:05,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 131 transitions, 452 flow [2023-08-25 04:01:05,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 131 transitions, 452 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 04:01:05,938 INFO L231 Difference]: Finished difference. Result has 127 places, 120 transitions, 294 flow [2023-08-25 04:01:05,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=127, PETRI_TRANSITIONS=120} [2023-08-25 04:01:05,939 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, 1 predicate places. [2023-08-25 04:01:05,940 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 120 transitions, 294 flow [2023-08-25 04:01:05,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:01:05,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:01:05,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:01:05,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-25 04:01:05,940 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 21 more)] === [2023-08-25 04:01:05,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:01:05,951 INFO L85 PathProgramCache]: Analyzing trace with hash -2040520961, now seen corresponding path program 1 times [2023-08-25 04:01:05,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:01:05,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410356441] [2023-08-25 04:01:05,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:01:05,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:01:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:01:05,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:01:05,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:01:05,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410356441] [2023-08-25 04:01:05,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410356441] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:01:05,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:01:05,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:01:05,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717248788] [2023-08-25 04:01:05,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:01:05,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:01:05,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:01:05,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:01:05,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:01:05,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 438 [2023-08-25 04:01:05,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 120 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:01:05,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:01:05,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 438 [2023-08-25 04:01:05,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand