/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/pthread-ext/29_conditionals_vs.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 18:33:40,470 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 18:33:40,522 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 [2023-08-24 18:33:40,526 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 18:33:40,527 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 18:33:40,554 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 18:33:40,555 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 18:33:40,555 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 18:33:40,555 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 18:33:40,556 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 18:33:40,556 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 18:33:40,556 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 18:33:40,556 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 18:33:40,557 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 18:33:40,557 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 18:33:40,557 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 18:33:40,557 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 18:33:40,557 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 18:33:40,558 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 18:33:40,558 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 18:33:40,558 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 18:33:40,558 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 18:33:40,559 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 18:33:40,559 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 18:33:40,559 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 18:33:40,559 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 18:33:40,559 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 18:33:40,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 18:33:40,560 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 18:33:40,560 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 18:33:40,560 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 18:33:40,560 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 18:33:40,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 18:33:40,561 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 18:33:40,561 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 18:33:40,561 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-24 18:33:40,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 18:33:40,788 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 18:33:40,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 18:33:40,791 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 18:33:40,791 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 18:33:40,792 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/29_conditionals_vs.i [2023-08-24 18:33:41,675 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 18:33:41,848 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 18:33:41,848 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/29_conditionals_vs.i [2023-08-24 18:33:41,857 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/088945d9d/87a9c90c0fa4482690c7356e396ca646/FLAGd734bf54f [2023-08-24 18:33:41,865 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/088945d9d/87a9c90c0fa4482690c7356e396ca646 [2023-08-24 18:33:41,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 18:33:41,867 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 18:33:41,868 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 18:33:41,868 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 18:33:41,870 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 18:33:41,870 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:33:41" (1/1) ... [2023-08-24 18:33:41,870 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b53ab5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:41, skipping insertion in model container [2023-08-24 18:33:41,871 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:33:41" (1/1) ... [2023-08-24 18:33:41,896 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 18:33:42,087 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 18:33:42,094 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 18:33:42,112 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [254] [2023-08-24 18:33:42,113 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [254] [2023-08-24 18:33:42,122 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 18:33:42,149 INFO L206 MainTranslator]: Completed translation [2023-08-24 18:33:42,149 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:42 WrapperNode [2023-08-24 18:33:42,149 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 18:33:42,150 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 18:33:42,151 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 18:33:42,151 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 18:33:42,155 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:42" (1/1) ... [2023-08-24 18:33:42,164 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:42" (1/1) ... [2023-08-24 18:33:42,178 INFO L138 Inliner]: procedures = 170, calls = 15, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 76 [2023-08-24 18:33:42,178 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 18:33:42,179 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 18:33:42,179 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 18:33:42,179 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 18:33:42,184 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:42" (1/1) ... [2023-08-24 18:33:42,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:42" (1/1) ... [2023-08-24 18:33:42,187 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:42" (1/1) ... [2023-08-24 18:33:42,187 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:42" (1/1) ... [2023-08-24 18:33:42,190 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:42" (1/1) ... [2023-08-24 18:33:42,191 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:42" (1/1) ... [2023-08-24 18:33:42,192 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:42" (1/1) ... [2023-08-24 18:33:42,193 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:42" (1/1) ... [2023-08-24 18:33:42,194 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 18:33:42,195 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 18:33:42,195 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 18:33:42,195 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 18:33:42,195 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:42" (1/1) ... [2023-08-24 18:33:42,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 18:33:42,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:33:42,215 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) [2023-08-24 18:33:42,235 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 [2023-08-24 18:33:42,243 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-24 18:33:42,244 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-24 18:33:42,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 18:33:42,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 18:33:42,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 18:33:42,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 18:33:42,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 18:33:42,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 18:33:42,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 18:33:42,246 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 18:33:42,340 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 18:33:42,342 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 18:33:42,435 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 18:33:42,468 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 18:33:42,468 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-24 18:33:42,470 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:33:42 BoogieIcfgContainer [2023-08-24 18:33:42,470 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 18:33:42,471 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 18:33:42,472 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 18:33:42,474 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 18:33:42,474 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 06:33:41" (1/3) ... [2023-08-24 18:33:42,474 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c14352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:33:42, skipping insertion in model container [2023-08-24 18:33:42,474 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:42" (2/3) ... [2023-08-24 18:33:42,474 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c14352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:33:42, skipping insertion in model container [2023-08-24 18:33:42,474 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:33:42" (3/3) ... [2023-08-24 18:33:42,475 INFO L112 eAbstractionObserver]: Analyzing ICFG 29_conditionals_vs.i [2023-08-24 18:33:42,486 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 18:33:42,486 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-08-24 18:33:42,486 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 18:33:42,512 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 18:33:42,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 62 transitions, 129 flow [2023-08-24 18:33:42,582 INFO L124 PetriNetUnfolderBase]: 7/72 cut-off events. [2023-08-24 18:33:42,582 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:33:42,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 72 events. 7/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2023-08-24 18:33:42,586 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 62 transitions, 129 flow [2023-08-24 18:33:42,590 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 62 transitions, 129 flow [2023-08-24 18:33:42,592 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 18:33:42,608 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 62 transitions, 129 flow [2023-08-24 18:33:42,614 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 62 transitions, 129 flow [2023-08-24 18:33:42,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 62 transitions, 129 flow [2023-08-24 18:33:42,638 INFO L124 PetriNetUnfolderBase]: 7/72 cut-off events. [2023-08-24 18:33:42,638 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:33:42,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 72 events. 7/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2023-08-24 18:33:42,640 INFO L119 LiptonReduction]: Number of co-enabled transitions 962 [2023-08-24 18:33:44,270 INFO L134 LiptonReduction]: Checked pairs total: 876 [2023-08-24 18:33:44,270 INFO L136 LiptonReduction]: Total number of compositions: 69 [2023-08-24 18:33:44,279 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 18:33:44,283 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;@60a511ab, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 18:33:44,283 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-24 18:33:44,284 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 18:33:44,284 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-24 18:33:44,285 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:33:44,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:33:44,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-24 18:33:44,285 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-08-24 18:33:44,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:33:44,288 INFO L85 PathProgramCache]: Analyzing trace with hash 10729328, now seen corresponding path program 1 times [2023-08-24 18:33:44,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:33:44,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479586619] [2023-08-24 18:33:44,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:33:44,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:33:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:33:44,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:33:44,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:33:44,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479586619] [2023-08-24 18:33:44,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479586619] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:33:44,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:33:44,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 18:33:44,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128317441] [2023-08-24 18:33:44,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:33:44,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-24 18:33:44,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:33:44,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-24 18:33:44,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-24 18:33:44,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 131 [2023-08-24 18:33:44,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 12 transitions, 29 flow. Second operand has 2 states, 2 states have (on average 52.0) internal successors, (104), 2 states have internal predecessors, (104), 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) [2023-08-24 18:33:44,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:33:44,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 131 [2023-08-24 18:33:44,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:33:44,453 INFO L124 PetriNetUnfolderBase]: 2/11 cut-off events. [2023-08-24 18:33:44,453 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:33:44,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 11 events. 2/11 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 2 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 14. Up to 11 conditions per place. [2023-08-24 18:33:44,454 INFO L140 encePairwiseOnDemand]: 125/131 looper letters, 5 selfloop transitions, 0 changer transitions 0/6 dead transitions. [2023-08-24 18:33:44,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 6 transitions, 27 flow [2023-08-24 18:33:44,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-24 18:33:44,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-24 18:33:44,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 111 transitions. [2023-08-24 18:33:44,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42366412213740456 [2023-08-24 18:33:44,462 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 111 transitions. [2023-08-24 18:33:44,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 111 transitions. [2023-08-24 18:33:44,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:33:44,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 111 transitions. [2023-08-24 18:33:44,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 55.5) internal successors, (111), 2 states have internal predecessors, (111), 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) [2023-08-24 18:33:44,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 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) [2023-08-24 18:33:44,468 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 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) [2023-08-24 18:33:44,469 INFO L175 Difference]: Start difference. First operand has 15 places, 12 transitions, 29 flow. Second operand 2 states and 111 transitions. [2023-08-24 18:33:44,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 6 transitions, 27 flow [2023-08-24 18:33:44,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 6 transitions, 27 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 18:33:44,471 INFO L231 Difference]: Finished difference. Result has 10 places, 6 transitions, 17 flow [2023-08-24 18:33:44,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=17, PETRI_PLACES=10, PETRI_TRANSITIONS=6} [2023-08-24 18:33:44,474 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, -5 predicate places. [2023-08-24 18:33:44,474 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 6 transitions, 17 flow [2023-08-24 18:33:44,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 52.0) internal successors, (104), 2 states have internal predecessors, (104), 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) [2023-08-24 18:33:44,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:33:44,475 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-24 18:33:44,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 18:33:44,475 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-08-24 18:33:44,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:33:44,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1720917078, now seen corresponding path program 1 times [2023-08-24 18:33:44,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:33:44,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971263255] [2023-08-24 18:33:44,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:33:44,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:33:44,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:33:44,491 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 18:33:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:33:44,508 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 18:33:44,508 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 18:33:44,509 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2023-08-24 18:33:44,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2023-08-24 18:33:44,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2023-08-24 18:33:44,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2023-08-24 18:33:44,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2023-08-24 18:33:44,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (5 of 11 remaining) [2023-08-24 18:33:44,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2023-08-24 18:33:44,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2023-08-24 18:33:44,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2023-08-24 18:33:44,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2023-08-24 18:33:44,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (0 of 11 remaining) [2023-08-24 18:33:44,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 18:33:44,512 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-24 18:33:44,514 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 18:33:44,514 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-24 18:33:44,527 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 18:33:44,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 100 transitions, 212 flow [2023-08-24 18:33:44,542 INFO L124 PetriNetUnfolderBase]: 13/122 cut-off events. [2023-08-24 18:33:44,543 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 18:33:44,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 122 events. 13/122 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 236 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 86. Up to 6 conditions per place. [2023-08-24 18:33:44,544 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 100 transitions, 212 flow [2023-08-24 18:33:44,544 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 100 transitions, 212 flow [2023-08-24 18:33:44,545 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 18:33:44,545 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 100 transitions, 212 flow [2023-08-24 18:33:44,545 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 100 transitions, 212 flow [2023-08-24 18:33:44,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 100 transitions, 212 flow [2023-08-24 18:33:44,556 INFO L124 PetriNetUnfolderBase]: 13/122 cut-off events. [2023-08-24 18:33:44,556 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 18:33:44,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 122 events. 13/122 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 236 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 86. Up to 6 conditions per place. [2023-08-24 18:33:44,559 INFO L119 LiptonReduction]: Number of co-enabled transitions 4736 [2023-08-24 18:33:46,554 INFO L134 LiptonReduction]: Checked pairs total: 4596 [2023-08-24 18:33:46,555 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-08-24 18:33:46,556 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 18:33:46,557 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;@60a511ab, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 18:33:46,557 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-24 18:33:46,558 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 18:33:46,558 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-24 18:33:46,558 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:33:46,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:33:46,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-24 18:33:46,559 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-24 18:33:46,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:33:46,559 INFO L85 PathProgramCache]: Analyzing trace with hash 18139502, now seen corresponding path program 1 times [2023-08-24 18:33:46,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:33:46,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943916210] [2023-08-24 18:33:46,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:33:46,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:33:46,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:33:46,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:33:46,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:33:46,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943916210] [2023-08-24 18:33:46,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943916210] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:33:46,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:33:46,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 18:33:46,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143919174] [2023-08-24 18:33:46,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:33:46,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-24 18:33:46,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:33:46,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-24 18:33:46,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-24 18:33:46,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 213 [2023-08-24 18:33:46,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 22 transitions, 56 flow. Second operand has 2 states, 2 states have (on average 80.0) internal successors, (160), 2 states have internal predecessors, (160), 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) [2023-08-24 18:33:46,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:33:46,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 213 [2023-08-24 18:33:46,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:33:46,627 INFO L124 PetriNetUnfolderBase]: 20/57 cut-off events. [2023-08-24 18:33:46,627 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-24 18:33:46,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 57 events. 20/57 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 160 event pairs, 20 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 28. Up to 47 conditions per place. [2023-08-24 18:33:46,628 INFO L140 encePairwiseOnDemand]: 202/213 looper letters, 8 selfloop transitions, 0 changer transitions 0/11 dead transitions. [2023-08-24 18:33:46,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 11 transitions, 50 flow [2023-08-24 18:33:46,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-24 18:33:46,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-24 18:33:46,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 175 transitions. [2023-08-24 18:33:46,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107981220657277 [2023-08-24 18:33:46,630 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 175 transitions. [2023-08-24 18:33:46,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 175 transitions. [2023-08-24 18:33:46,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:33:46,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 175 transitions. [2023-08-24 18:33:46,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 87.5) internal successors, (175), 2 states have internal predecessors, (175), 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) [2023-08-24 18:33:46,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 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) [2023-08-24 18:33:46,632 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 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) [2023-08-24 18:33:46,632 INFO L175 Difference]: Start difference. First operand has 27 places, 22 transitions, 56 flow. Second operand 2 states and 175 transitions. [2023-08-24 18:33:46,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 11 transitions, 50 flow [2023-08-24 18:33:46,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 11 transitions, 48 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-24 18:33:46,633 INFO L231 Difference]: Finished difference. Result has 17 places, 11 transitions, 32 flow [2023-08-24 18:33:46,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=32, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2023-08-24 18:33:46,634 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -10 predicate places. [2023-08-24 18:33:46,634 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 11 transitions, 32 flow [2023-08-24 18:33:46,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 80.0) internal successors, (160), 2 states have internal predecessors, (160), 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) [2023-08-24 18:33:46,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:33:46,634 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-24 18:33:46,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 18:33:46,634 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-24 18:33:46,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:33:46,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1967451341, now seen corresponding path program 1 times [2023-08-24 18:33:46,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:33:46,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825919687] [2023-08-24 18:33:46,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:33:46,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:33:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:33:46,647 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 18:33:46,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:33:46,664 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 18:33:46,664 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 18:33:46,664 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2023-08-24 18:33:46,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2023-08-24 18:33:46,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2023-08-24 18:33:46,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2023-08-24 18:33:46,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2023-08-24 18:33:46,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (10 of 16 remaining) [2023-08-24 18:33:46,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2023-08-24 18:33:46,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2023-08-24 18:33:46,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2023-08-24 18:33:46,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2023-08-24 18:33:46,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (5 of 16 remaining) [2023-08-24 18:33:46,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2023-08-24 18:33:46,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2023-08-24 18:33:46,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2023-08-24 18:33:46,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2023-08-24 18:33:46,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (0 of 16 remaining) [2023-08-24 18:33:46,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 18:33:46,666 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-24 18:33:46,667 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 18:33:46,667 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-24 18:33:46,688 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 18:33:46,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 138 transitions, 297 flow [2023-08-24 18:33:46,715 INFO L124 PetriNetUnfolderBase]: 19/172 cut-off events. [2023-08-24 18:33:46,716 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-24 18:33:46,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 172 events. 19/172 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 449 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 126. Up to 8 conditions per place. [2023-08-24 18:33:46,717 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 138 transitions, 297 flow [2023-08-24 18:33:46,718 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 138 transitions, 297 flow [2023-08-24 18:33:46,718 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 18:33:46,718 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 138 transitions, 297 flow [2023-08-24 18:33:46,718 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 138 transitions, 297 flow [2023-08-24 18:33:46,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 138 transitions, 297 flow [2023-08-24 18:33:46,729 INFO L124 PetriNetUnfolderBase]: 19/172 cut-off events. [2023-08-24 18:33:46,730 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-24 18:33:46,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 172 events. 19/172 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 449 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 126. Up to 8 conditions per place. [2023-08-24 18:33:46,735 INFO L119 LiptonReduction]: Number of co-enabled transitions 11322 [2023-08-24 18:33:49,625 INFO L134 LiptonReduction]: Checked pairs total: 12424 [2023-08-24 18:33:49,625 INFO L136 LiptonReduction]: Total number of compositions: 170 [2023-08-24 18:33:49,627 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 18:33:49,627 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;@60a511ab, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 18:33:49,627 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-24 18:33:49,628 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 18:33:49,628 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-24 18:33:49,628 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:33:49,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:33:49,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-24 18:33:49,629 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-24 18:33:49,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:33:49,629 INFO L85 PathProgramCache]: Analyzing trace with hash 28376690, now seen corresponding path program 1 times [2023-08-24 18:33:49,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:33:49,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868363709] [2023-08-24 18:33:49,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:33:49,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:33:49,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:33:49,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:33:49,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:33:49,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868363709] [2023-08-24 18:33:49,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868363709] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:33:49,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:33:49,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 18:33:49,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090806044] [2023-08-24 18:33:49,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:33:49,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-24 18:33:49,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:33:49,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-24 18:33:49,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-24 18:33:49,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 308 [2023-08-24 18:33:49,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 81 flow. Second operand has 2 states, 2 states have (on average 108.0) internal successors, (216), 2 states have internal predecessors, (216), 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) [2023-08-24 18:33:49,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:33:49,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 308 [2023-08-24 18:33:49,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:33:49,681 INFO L124 PetriNetUnfolderBase]: 110/225 cut-off events. [2023-08-24 18:33:49,681 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2023-08-24 18:33:49,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 225 events. 110/225 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 897 event pairs, 110 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 127. Up to 191 conditions per place. [2023-08-24 18:33:49,683 INFO L140 encePairwiseOnDemand]: 292/308 looper letters, 11 selfloop transitions, 0 changer transitions 0/14 dead transitions. [2023-08-24 18:33:49,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 14 transitions, 71 flow [2023-08-24 18:33:49,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-24 18:33:49,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-24 18:33:49,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 239 transitions. [2023-08-24 18:33:49,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.387987012987013 [2023-08-24 18:33:49,688 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 239 transitions. [2023-08-24 18:33:49,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 239 transitions. [2023-08-24 18:33:49,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:33:49,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 239 transitions. [2023-08-24 18:33:49,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 119.5) internal successors, (239), 2 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:33:49,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 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) [2023-08-24 18:33:49,690 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 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) [2023-08-24 18:33:49,690 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 81 flow. Second operand 2 states and 239 transitions. [2023-08-24 18:33:49,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 14 transitions, 71 flow [2023-08-24 18:33:49,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 14 transitions, 65 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-24 18:33:49,691 INFO L231 Difference]: Finished difference. Result has 22 places, 14 transitions, 43 flow [2023-08-24 18:33:49,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=43, PETRI_PLACES=22, PETRI_TRANSITIONS=14} [2023-08-24 18:33:49,692 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -15 predicate places. [2023-08-24 18:33:49,692 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 14 transitions, 43 flow [2023-08-24 18:33:49,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 108.0) internal successors, (216), 2 states have internal predecessors, (216), 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) [2023-08-24 18:33:49,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:33:49,692 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-24 18:33:49,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 18:33:49,692 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-24 18:33:49,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:33:49,693 INFO L85 PathProgramCache]: Analyzing trace with hash -373616536, now seen corresponding path program 1 times [2023-08-24 18:33:49,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:33:49,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86191042] [2023-08-24 18:33:49,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:33:49,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:33:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:33:49,717 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 18:33:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:33:49,726 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 18:33:49,726 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 18:33:49,727 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-08-24 18:33:49,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2023-08-24 18:33:49,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2023-08-24 18:33:49,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2023-08-24 18:33:49,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2023-08-24 18:33:49,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (15 of 21 remaining) [2023-08-24 18:33:49,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2023-08-24 18:33:49,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2023-08-24 18:33:49,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2023-08-24 18:33:49,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2023-08-24 18:33:49,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (10 of 21 remaining) [2023-08-24 18:33:49,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2023-08-24 18:33:49,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2023-08-24 18:33:49,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2023-08-24 18:33:49,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2023-08-24 18:33:49,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (5 of 21 remaining) [2023-08-24 18:33:49,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2023-08-24 18:33:49,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2023-08-24 18:33:49,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2023-08-24 18:33:49,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2023-08-24 18:33:49,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (0 of 21 remaining) [2023-08-24 18:33:49,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 18:33:49,730 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-24 18:33:49,730 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 18:33:49,730 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-24 18:33:49,745 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 18:33:49,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 176 transitions, 384 flow [2023-08-24 18:33:49,766 INFO L124 PetriNetUnfolderBase]: 25/222 cut-off events. [2023-08-24 18:33:49,766 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-24 18:33:49,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 222 events. 25/222 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 636 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 180. Up to 10 conditions per place. [2023-08-24 18:33:49,768 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 176 transitions, 384 flow [2023-08-24 18:33:49,769 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 176 transitions, 384 flow [2023-08-24 18:33:49,769 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 18:33:49,770 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 176 transitions, 384 flow [2023-08-24 18:33:49,770 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 176 transitions, 384 flow [2023-08-24 18:33:49,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 176 transitions, 384 flow [2023-08-24 18:33:49,795 INFO L124 PetriNetUnfolderBase]: 25/222 cut-off events. [2023-08-24 18:33:49,795 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-24 18:33:49,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 222 events. 25/222 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 636 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 180. Up to 10 conditions per place. [2023-08-24 18:33:49,804 INFO L119 LiptonReduction]: Number of co-enabled transitions 20720 [2023-08-24 18:33:53,112 INFO L134 LiptonReduction]: Checked pairs total: 21519 [2023-08-24 18:33:53,113 INFO L136 LiptonReduction]: Total number of compositions: 211 [2023-08-24 18:33:53,114 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 18:33:53,114 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;@60a511ab, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 18:33:53,114 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-08-24 18:33:53,115 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 18:33:53,115 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-24 18:33:53,115 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:33:53,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:33:53,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-24 18:33:53,116 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-24 18:33:53,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:33:53,116 INFO L85 PathProgramCache]: Analyzing trace with hash 41563345, now seen corresponding path program 1 times [2023-08-24 18:33:53,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:33:53,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404728460] [2023-08-24 18:33:53,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:33:53,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:33:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:33:53,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:33:53,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:33:53,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404728460] [2023-08-24 18:33:53,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404728460] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:33:53,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:33:53,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 18:33:53,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920229794] [2023-08-24 18:33:53,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:33:53,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-24 18:33:53,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:33:53,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-24 18:33:53,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-24 18:33:53,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 387 [2023-08-24 18:33:53,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 108 flow. Second operand has 2 states, 2 states have (on average 136.0) internal successors, (272), 2 states have internal predecessors, (272), 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) [2023-08-24 18:33:53,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:33:53,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 387 [2023-08-24 18:33:53,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:33:53,241 INFO L124 PetriNetUnfolderBase]: 488/837 cut-off events. [2023-08-24 18:33:53,241 INFO L125 PetriNetUnfolderBase]: For 448/448 co-relation queries the response was YES. [2023-08-24 18:33:53,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1863 conditions, 837 events. 488/837 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3906 event pairs, 488 based on Foata normal form. 0/797 useless extension candidates. Maximal degree in co-relation 511. Up to 731 conditions per place. [2023-08-24 18:33:53,245 INFO L140 encePairwiseOnDemand]: 366/387 looper letters, 14 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2023-08-24 18:33:53,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 17 transitions, 94 flow [2023-08-24 18:33:53,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-24 18:33:53,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-24 18:33:53,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 303 transitions. [2023-08-24 18:33:53,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39147286821705424 [2023-08-24 18:33:53,247 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 303 transitions. [2023-08-24 18:33:53,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 303 transitions. [2023-08-24 18:33:53,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:33:53,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 303 transitions. [2023-08-24 18:33:53,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 151.5) internal successors, (303), 2 states have internal predecessors, (303), 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) [2023-08-24 18:33:53,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 387.0) internal successors, (1161), 3 states have internal predecessors, (1161), 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) [2023-08-24 18:33:53,250 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 387.0) internal successors, (1161), 3 states have internal predecessors, (1161), 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) [2023-08-24 18:33:53,250 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 108 flow. Second operand 2 states and 303 transitions. [2023-08-24 18:33:53,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 17 transitions, 94 flow [2023-08-24 18:33:53,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 17 transitions, 82 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-08-24 18:33:53,252 INFO L231 Difference]: Finished difference. Result has 27 places, 17 transitions, 54 flow [2023-08-24 18:33:53,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=54, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2023-08-24 18:33:53,253 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -20 predicate places. [2023-08-24 18:33:53,253 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 54 flow [2023-08-24 18:33:53,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 136.0) internal successors, (272), 2 states have internal predecessors, (272), 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) [2023-08-24 18:33:53,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:33:53,253 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-24 18:33:53,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 18:33:53,253 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-24 18:33:53,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:33:53,254 INFO L85 PathProgramCache]: Analyzing trace with hash -233838121, now seen corresponding path program 1 times [2023-08-24 18:33:53,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:33:53,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90860275] [2023-08-24 18:33:53,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:33:53,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:33:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:33:53,264 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 18:33:53,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:33:53,280 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 18:33:53,280 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 18:33:53,280 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2023-08-24 18:33:53,282 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 26 remaining) [2023-08-24 18:33:53,282 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 26 remaining) [2023-08-24 18:33:53,282 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (22 of 26 remaining) [2023-08-24 18:33:53,282 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (21 of 26 remaining) [2023-08-24 18:33:53,282 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (20 of 26 remaining) [2023-08-24 18:33:53,282 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 26 remaining) [2023-08-24 18:33:53,283 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 26 remaining) [2023-08-24 18:33:53,283 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 26 remaining) [2023-08-24 18:33:53,283 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 26 remaining) [2023-08-24 18:33:53,283 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (15 of 26 remaining) [2023-08-24 18:33:53,283 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 26 remaining) [2023-08-24 18:33:53,283 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 26 remaining) [2023-08-24 18:33:53,283 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 26 remaining) [2023-08-24 18:33:53,283 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (11 of 26 remaining) [2023-08-24 18:33:53,283 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (10 of 26 remaining) [2023-08-24 18:33:53,283 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 26 remaining) [2023-08-24 18:33:53,283 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 26 remaining) [2023-08-24 18:33:53,284 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 26 remaining) [2023-08-24 18:33:53,284 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (6 of 26 remaining) [2023-08-24 18:33:53,284 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (5 of 26 remaining) [2023-08-24 18:33:53,284 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 26 remaining) [2023-08-24 18:33:53,284 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 26 remaining) [2023-08-24 18:33:53,284 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 26 remaining) [2023-08-24 18:33:53,284 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 26 remaining) [2023-08-24 18:33:53,284 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (0 of 26 remaining) [2023-08-24 18:33:53,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 18:33:53,284 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-24 18:33:53,285 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 18:33:53,285 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-24 18:33:53,308 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 18:33:53,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 214 transitions, 473 flow [2023-08-24 18:33:53,338 INFO L124 PetriNetUnfolderBase]: 31/272 cut-off events. [2023-08-24 18:33:53,338 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-24 18:33:53,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 272 events. 31/272 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 835 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 236. Up to 12 conditions per place. [2023-08-24 18:33:53,340 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 214 transitions, 473 flow [2023-08-24 18:33:53,343 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 214 transitions, 473 flow [2023-08-24 18:33:53,343 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 18:33:53,343 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 199 places, 214 transitions, 473 flow [2023-08-24 18:33:53,343 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 199 places, 214 transitions, 473 flow [2023-08-24 18:33:53,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 214 transitions, 473 flow [2023-08-24 18:33:53,362 INFO L124 PetriNetUnfolderBase]: 31/272 cut-off events. [2023-08-24 18:33:53,362 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-24 18:33:53,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 272 events. 31/272 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 835 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 236. Up to 12 conditions per place. [2023-08-24 18:33:53,372 INFO L119 LiptonReduction]: Number of co-enabled transitions 32930 [2023-08-24 18:33:57,608 INFO L134 LiptonReduction]: Checked pairs total: 35584 [2023-08-24 18:33:57,608 INFO L136 LiptonReduction]: Total number of compositions: 273 [2023-08-24 18:33:57,609 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 18:33:57,609 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;@60a511ab, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 18:33:57,609 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-08-24 18:33:57,610 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 18:33:57,610 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-24 18:33:57,610 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:33:57,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:33:57,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-24 18:33:57,610 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-24 18:33:57,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:33:57,611 INFO L85 PathProgramCache]: Analyzing trace with hash 56694689, now seen corresponding path program 1 times [2023-08-24 18:33:57,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:33:57,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720390865] [2023-08-24 18:33:57,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:33:57,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:33:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:33:57,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:33:57,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:33:57,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720390865] [2023-08-24 18:33:57,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720390865] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:33:57,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:33:57,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 18:33:57,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838076351] [2023-08-24 18:33:57,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:33:57,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-24 18:33:57,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:33:57,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-24 18:33:57,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-24 18:33:57,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 487 [2023-08-24 18:33:57,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 137 flow. Second operand has 2 states, 2 states have (on average 164.0) internal successors, (328), 2 states have internal predecessors, (328), 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) [2023-08-24 18:33:57,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:33:57,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 487 [2023-08-24 18:33:57,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:33:57,845 INFO L124 PetriNetUnfolderBase]: 1946/2997 cut-off events. [2023-08-24 18:33:57,845 INFO L125 PetriNetUnfolderBase]: For 2176/2176 co-relation queries the response was YES. [2023-08-24 18:33:57,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6751 conditions, 2997 events. 1946/2997 cut-off events. For 2176/2176 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 15447 event pairs, 1946 based on Foata normal form. 0/2876 useless extension candidates. Maximal degree in co-relation 1924. Up to 2675 conditions per place. [2023-08-24 18:33:57,858 INFO L140 encePairwiseOnDemand]: 461/487 looper letters, 17 selfloop transitions, 0 changer transitions 0/20 dead transitions. [2023-08-24 18:33:57,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 20 transitions, 119 flow [2023-08-24 18:33:57,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-24 18:33:57,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-24 18:33:57,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 367 transitions. [2023-08-24 18:33:57,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37679671457905545 [2023-08-24 18:33:57,860 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 367 transitions. [2023-08-24 18:33:57,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 367 transitions. [2023-08-24 18:33:57,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:33:57,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 367 transitions. [2023-08-24 18:33:57,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 183.5) internal successors, (367), 2 states have internal predecessors, (367), 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) [2023-08-24 18:33:57,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 487.0) internal successors, (1461), 3 states have internal predecessors, (1461), 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) [2023-08-24 18:33:57,864 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 487.0) internal successors, (1461), 3 states have internal predecessors, (1461), 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) [2023-08-24 18:33:57,864 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 137 flow. Second operand 2 states and 367 transitions. [2023-08-24 18:33:57,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 20 transitions, 119 flow [2023-08-24 18:33:57,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 20 transitions, 99 flow, removed 10 selfloop flow, removed 0 redundant places. [2023-08-24 18:33:57,867 INFO L231 Difference]: Finished difference. Result has 32 places, 20 transitions, 65 flow [2023-08-24 18:33:57,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=487, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=65, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2023-08-24 18:33:57,869 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -25 predicate places. [2023-08-24 18:33:57,870 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 20 transitions, 65 flow [2023-08-24 18:33:57,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 164.0) internal successors, (328), 2 states have internal predecessors, (328), 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) [2023-08-24 18:33:57,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:33:57,871 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:33:57,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 18:33:57,872 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-24 18:33:57,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:33:57,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1535405618, now seen corresponding path program 1 times [2023-08-24 18:33:57,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:33:57,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516386928] [2023-08-24 18:33:57,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:33:57,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:33:57,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:33:57,893 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 18:33:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:33:57,916 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 18:33:57,916 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 18:33:57,916 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2023-08-24 18:33:57,916 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 31 remaining) [2023-08-24 18:33:57,916 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 31 remaining) [2023-08-24 18:33:57,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (27 of 31 remaining) [2023-08-24 18:33:57,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (26 of 31 remaining) [2023-08-24 18:33:57,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (25 of 31 remaining) [2023-08-24 18:33:57,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 31 remaining) [2023-08-24 18:33:57,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 31 remaining) [2023-08-24 18:33:57,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (22 of 31 remaining) [2023-08-24 18:33:57,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (21 of 31 remaining) [2023-08-24 18:33:57,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (20 of 31 remaining) [2023-08-24 18:33:57,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 31 remaining) [2023-08-24 18:33:57,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 31 remaining) [2023-08-24 18:33:57,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 31 remaining) [2023-08-24 18:33:57,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 31 remaining) [2023-08-24 18:33:57,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (15 of 31 remaining) [2023-08-24 18:33:57,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 31 remaining) [2023-08-24 18:33:57,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 31 remaining) [2023-08-24 18:33:57,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 31 remaining) [2023-08-24 18:33:57,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (11 of 31 remaining) [2023-08-24 18:33:57,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (10 of 31 remaining) [2023-08-24 18:33:57,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 31 remaining) [2023-08-24 18:33:57,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 31 remaining) [2023-08-24 18:33:57,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 31 remaining) [2023-08-24 18:33:57,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (6 of 31 remaining) [2023-08-24 18:33:57,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (5 of 31 remaining) [2023-08-24 18:33:57,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 31 remaining) [2023-08-24 18:33:57,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 31 remaining) [2023-08-24 18:33:57,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 31 remaining) [2023-08-24 18:33:57,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 31 remaining) [2023-08-24 18:33:57,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (0 of 31 remaining) [2023-08-24 18:33:57,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 18:33:57,922 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-24 18:33:57,923 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 18:33:57,923 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-24 18:33:57,951 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 18:33:57,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 252 transitions, 564 flow [2023-08-24 18:33:57,984 INFO L124 PetriNetUnfolderBase]: 37/322 cut-off events. [2023-08-24 18:33:57,984 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-08-24 18:33:57,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 322 events. 37/322 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1022 event pairs, 0 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 294. Up to 14 conditions per place. [2023-08-24 18:33:57,987 INFO L82 GeneralOperation]: Start removeDead. Operand has 234 places, 252 transitions, 564 flow [2023-08-24 18:33:57,990 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 234 places, 252 transitions, 564 flow [2023-08-24 18:33:57,990 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 18:33:57,990 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 234 places, 252 transitions, 564 flow [2023-08-24 18:33:57,990 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 234 places, 252 transitions, 564 flow [2023-08-24 18:33:57,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 252 transitions, 564 flow [2023-08-24 18:33:58,019 INFO L124 PetriNetUnfolderBase]: 37/322 cut-off events. [2023-08-24 18:33:58,019 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-08-24 18:33:58,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 322 events. 37/322 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1022 event pairs, 0 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 294. Up to 14 conditions per place. [2023-08-24 18:33:58,030 INFO L119 LiptonReduction]: Number of co-enabled transitions 47952 [2023-08-24 18:34:02,288 INFO L134 LiptonReduction]: Checked pairs total: 50112 [2023-08-24 18:34:02,288 INFO L136 LiptonReduction]: Total number of compositions: 303 [2023-08-24 18:34:02,289 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 18:34:02,289 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;@60a511ab, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 18:34:02,290 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2023-08-24 18:34:02,290 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 18:34:02,290 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-24 18:34:02,291 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:34:02,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:34:02,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-24 18:34:02,291 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-08-24 18:34:02,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:34:02,291 INFO L85 PathProgramCache]: Analyzing trace with hash 74832378, now seen corresponding path program 1 times [2023-08-24 18:34:02,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:34:02,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631450656] [2023-08-24 18:34:02,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:34:02,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:34:02,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:34:02,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:34:02,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:34:02,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631450656] [2023-08-24 18:34:02,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631450656] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:34:02,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:34:02,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 18:34:02,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354022074] [2023-08-24 18:34:02,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:34:02,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-24 18:34:02,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:34:02,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-24 18:34:02,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-24 18:34:02,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 555 [2023-08-24 18:34:02,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 54 transitions, 168 flow. Second operand has 2 states, 2 states have (on average 192.0) internal successors, (384), 2 states have internal predecessors, (384), 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) [2023-08-24 18:34:02,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:34:02,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 555 [2023-08-24 18:34:02,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:34:03,159 INFO L124 PetriNetUnfolderBase]: 7292/10449 cut-off events. [2023-08-24 18:34:03,159 INFO L125 PetriNetUnfolderBase]: For 9628/9628 co-relation queries the response was YES. [2023-08-24 18:34:03,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23762 conditions, 10449 events. 7292/10449 cut-off events. For 9628/9628 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 57460 event pairs, 7292 based on Foata normal form. 0/10084 useless extension candidates. Maximal degree in co-relation 6946. Up to 9479 conditions per place. [2023-08-24 18:34:03,210 INFO L140 encePairwiseOnDemand]: 524/555 looper letters, 20 selfloop transitions, 0 changer transitions 0/23 dead transitions. [2023-08-24 18:34:03,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 23 transitions, 146 flow [2023-08-24 18:34:03,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-24 18:34:03,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-24 18:34:03,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 431 transitions. [2023-08-24 18:34:03,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38828828828828826 [2023-08-24 18:34:03,212 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 431 transitions. [2023-08-24 18:34:03,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 431 transitions. [2023-08-24 18:34:03,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:34:03,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 431 transitions. [2023-08-24 18:34:03,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 215.5) internal successors, (431), 2 states have internal predecessors, (431), 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) [2023-08-24 18:34:03,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 555.0) internal successors, (1665), 3 states have internal predecessors, (1665), 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) [2023-08-24 18:34:03,216 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 555.0) internal successors, (1665), 3 states have internal predecessors, (1665), 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) [2023-08-24 18:34:03,216 INFO L175 Difference]: Start difference. First operand has 67 places, 54 transitions, 168 flow. Second operand 2 states and 431 transitions. [2023-08-24 18:34:03,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 23 transitions, 146 flow [2023-08-24 18:34:03,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 23 transitions, 116 flow, removed 15 selfloop flow, removed 0 redundant places. [2023-08-24 18:34:03,220 INFO L231 Difference]: Finished difference. Result has 37 places, 23 transitions, 76 flow [2023-08-24 18:34:03,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=555, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=76, PETRI_PLACES=37, PETRI_TRANSITIONS=23} [2023-08-24 18:34:03,221 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -30 predicate places. [2023-08-24 18:34:03,221 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 23 transitions, 76 flow [2023-08-24 18:34:03,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 192.0) internal successors, (384), 2 states have internal predecessors, (384), 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) [2023-08-24 18:34:03,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:34:03,224 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:34:03,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-24 18:34:03,224 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-08-24 18:34:03,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:34:03,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1185369879, now seen corresponding path program 1 times [2023-08-24 18:34:03,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:34:03,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329851459] [2023-08-24 18:34:03,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:34:03,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:34:03,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:34:03,249 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 18:34:03,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:34:03,266 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 18:34:03,266 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 18:34:03,267 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2023-08-24 18:34:03,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2023-08-24 18:34:03,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2023-08-24 18:34:03,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2023-08-24 18:34:03,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2023-08-24 18:34:03,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (30 of 36 remaining) [2023-08-24 18:34:03,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2023-08-24 18:34:03,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2023-08-24 18:34:03,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2023-08-24 18:34:03,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2023-08-24 18:34:03,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (25 of 36 remaining) [2023-08-24 18:34:03,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2023-08-24 18:34:03,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2023-08-24 18:34:03,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2023-08-24 18:34:03,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2023-08-24 18:34:03,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (20 of 36 remaining) [2023-08-24 18:34:03,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2023-08-24 18:34:03,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2023-08-24 18:34:03,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 36 remaining) [2023-08-24 18:34:03,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2023-08-24 18:34:03,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (15 of 36 remaining) [2023-08-24 18:34:03,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2023-08-24 18:34:03,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2023-08-24 18:34:03,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2023-08-24 18:34:03,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2023-08-24 18:34:03,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (10 of 36 remaining) [2023-08-24 18:34:03,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2023-08-24 18:34:03,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2023-08-24 18:34:03,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2023-08-24 18:34:03,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (6 of 36 remaining) [2023-08-24 18:34:03,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (5 of 36 remaining) [2023-08-24 18:34:03,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2023-08-24 18:34:03,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2023-08-24 18:34:03,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2023-08-24 18:34:03,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2023-08-24 18:34:03,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (0 of 36 remaining) [2023-08-24 18:34:03,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-24 18:34:03,269 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-24 18:34:03,270 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 18:34:03,271 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-24 18:34:03,294 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 18:34:03,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 269 places, 290 transitions, 657 flow [2023-08-24 18:34:03,325 INFO L124 PetriNetUnfolderBase]: 43/372 cut-off events. [2023-08-24 18:34:03,325 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-08-24 18:34:03,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 372 events. 43/372 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1230 event pairs, 0 based on Foata normal form. 0/286 useless extension candidates. Maximal degree in co-relation 353. Up to 16 conditions per place. [2023-08-24 18:34:03,328 INFO L82 GeneralOperation]: Start removeDead. Operand has 269 places, 290 transitions, 657 flow [2023-08-24 18:34:03,332 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 269 places, 290 transitions, 657 flow [2023-08-24 18:34:03,332 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 18:34:03,332 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 269 places, 290 transitions, 657 flow [2023-08-24 18:34:03,332 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 269 places, 290 transitions, 657 flow [2023-08-24 18:34:03,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 269 places, 290 transitions, 657 flow [2023-08-24 18:34:03,365 INFO L124 PetriNetUnfolderBase]: 43/372 cut-off events. [2023-08-24 18:34:03,365 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-08-24 18:34:03,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 372 events. 43/372 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1230 event pairs, 0 based on Foata normal form. 0/286 useless extension candidates. Maximal degree in co-relation 353. Up to 16 conditions per place. [2023-08-24 18:34:03,378 INFO L119 LiptonReduction]: Number of co-enabled transitions 65786 [2023-08-24 18:34:08,754 INFO L134 LiptonReduction]: Checked pairs total: 73134 [2023-08-24 18:34:08,754 INFO L136 LiptonReduction]: Total number of compositions: 366 [2023-08-24 18:34:08,769 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 18:34:08,770 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;@60a511ab, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 18:34:08,770 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2023-08-24 18:34:08,771 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 18:34:08,771 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-24 18:34:08,771 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:34:08,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:34:08,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-24 18:34:08,771 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-08-24 18:34:08,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:34:08,771 INFO L85 PathProgramCache]: Analyzing trace with hash 95828302, now seen corresponding path program 1 times [2023-08-24 18:34:08,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:34:08,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956458030] [2023-08-24 18:34:08,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:34:08,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:34:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:34:08,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:34:08,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:34:08,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956458030] [2023-08-24 18:34:08,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956458030] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:34:08,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:34:08,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 18:34:08,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279965535] [2023-08-24 18:34:08,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:34:08,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-24 18:34:08,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:34:08,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-24 18:34:08,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-24 18:34:08,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 656 [2023-08-24 18:34:08,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 62 transitions, 201 flow. Second operand has 2 states, 2 states have (on average 220.0) internal successors, (440), 2 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:34:08,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:34:08,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 656 [2023-08-24 18:34:08,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:34:11,590 INFO L124 PetriNetUnfolderBase]: 26246/35721 cut-off events. [2023-08-24 18:34:11,590 INFO L125 PetriNetUnfolderBase]: For 40003/40003 co-relation queries the response was YES. [2023-08-24 18:34:11,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81840 conditions, 35721 events. 26246/35721 cut-off events. For 40003/40003 co-relation queries the response was YES. Maximal size of possible extension queue 1425. Compared 205565 event pairs, 26246 based on Foata normal form. 0/34627 useless extension candidates. Maximal degree in co-relation 24361. Up to 32807 conditions per place. [2023-08-24 18:34:11,759 INFO L140 encePairwiseOnDemand]: 620/656 looper letters, 23 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2023-08-24 18:34:11,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 26 transitions, 175 flow [2023-08-24 18:34:11,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-24 18:34:11,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-24 18:34:11,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 495 transitions. [2023-08-24 18:34:11,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37728658536585363 [2023-08-24 18:34:11,761 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 495 transitions. [2023-08-24 18:34:11,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 495 transitions. [2023-08-24 18:34:11,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:34:11,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 495 transitions. [2023-08-24 18:34:11,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 247.5) internal successors, (495), 2 states have internal predecessors, (495), 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) [2023-08-24 18:34:11,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 656.0) internal successors, (1968), 3 states have internal predecessors, (1968), 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) [2023-08-24 18:34:11,765 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 656.0) internal successors, (1968), 3 states have internal predecessors, (1968), 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) [2023-08-24 18:34:11,765 INFO L175 Difference]: Start difference. First operand has 77 places, 62 transitions, 201 flow. Second operand 2 states and 495 transitions. [2023-08-24 18:34:11,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 26 transitions, 175 flow [2023-08-24 18:34:11,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 26 transitions, 133 flow, removed 21 selfloop flow, removed 0 redundant places. [2023-08-24 18:34:11,783 INFO L231 Difference]: Finished difference. Result has 42 places, 26 transitions, 87 flow [2023-08-24 18:34:11,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=87, PETRI_PLACES=42, PETRI_TRANSITIONS=26} [2023-08-24 18:34:11,784 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -35 predicate places. [2023-08-24 18:34:11,784 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 26 transitions, 87 flow [2023-08-24 18:34:11,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 220.0) internal successors, (440), 2 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:34:11,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:34:11,784 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:34:11,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-24 18:34:11,785 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-08-24 18:34:11,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:34:11,785 INFO L85 PathProgramCache]: Analyzing trace with hash 539947945, now seen corresponding path program 1 times [2023-08-24 18:34:11,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:34:11,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285863903] [2023-08-24 18:34:11,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:34:11,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:34:11,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:34:11,803 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 18:34:11,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:34:11,818 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 18:34:11,818 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 18:34:11,818 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (40 of 41 remaining) [2023-08-24 18:34:11,818 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (39 of 41 remaining) [2023-08-24 18:34:11,818 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (38 of 41 remaining) [2023-08-24 18:34:11,818 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (37 of 41 remaining) [2023-08-24 18:34:11,818 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (36 of 41 remaining) [2023-08-24 18:34:11,818 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (35 of 41 remaining) [2023-08-24 18:34:11,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (34 of 41 remaining) [2023-08-24 18:34:11,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (33 of 41 remaining) [2023-08-24 18:34:11,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (32 of 41 remaining) [2023-08-24 18:34:11,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (31 of 41 remaining) [2023-08-24 18:34:11,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (30 of 41 remaining) [2023-08-24 18:34:11,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 41 remaining) [2023-08-24 18:34:11,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 41 remaining) [2023-08-24 18:34:11,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (27 of 41 remaining) [2023-08-24 18:34:11,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (26 of 41 remaining) [2023-08-24 18:34:11,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (25 of 41 remaining) [2023-08-24 18:34:11,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 41 remaining) [2023-08-24 18:34:11,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 41 remaining) [2023-08-24 18:34:11,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (22 of 41 remaining) [2023-08-24 18:34:11,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (21 of 41 remaining) [2023-08-24 18:34:11,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (20 of 41 remaining) [2023-08-24 18:34:11,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 41 remaining) [2023-08-24 18:34:11,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 41 remaining) [2023-08-24 18:34:11,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 41 remaining) [2023-08-24 18:34:11,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 41 remaining) [2023-08-24 18:34:11,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (15 of 41 remaining) [2023-08-24 18:34:11,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 41 remaining) [2023-08-24 18:34:11,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 41 remaining) [2023-08-24 18:34:11,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 41 remaining) [2023-08-24 18:34:11,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (11 of 41 remaining) [2023-08-24 18:34:11,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (10 of 41 remaining) [2023-08-24 18:34:11,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 41 remaining) [2023-08-24 18:34:11,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 41 remaining) [2023-08-24 18:34:11,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 41 remaining) [2023-08-24 18:34:11,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (6 of 41 remaining) [2023-08-24 18:34:11,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (5 of 41 remaining) [2023-08-24 18:34:11,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 41 remaining) [2023-08-24 18:34:11,821 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 41 remaining) [2023-08-24 18:34:11,821 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 41 remaining) [2023-08-24 18:34:11,821 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 41 remaining) [2023-08-24 18:34:11,821 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (0 of 41 remaining) [2023-08-24 18:34:11,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-24 18:34:11,821 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-24 18:34:11,821 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 18:34:11,821 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-24 18:34:11,843 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 18:34:11,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 304 places, 328 transitions, 752 flow [2023-08-24 18:34:11,882 INFO L124 PetriNetUnfolderBase]: 49/422 cut-off events. [2023-08-24 18:34:11,882 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2023-08-24 18:34:11,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 422 events. 49/422 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1417 event pairs, 0 based on Foata normal form. 0/324 useless extension candidates. Maximal degree in co-relation 413. Up to 18 conditions per place. [2023-08-24 18:34:11,886 INFO L82 GeneralOperation]: Start removeDead. Operand has 304 places, 328 transitions, 752 flow [2023-08-24 18:34:11,889 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 304 places, 328 transitions, 752 flow [2023-08-24 18:34:11,889 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 18:34:11,889 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 304 places, 328 transitions, 752 flow [2023-08-24 18:34:11,889 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 304 places, 328 transitions, 752 flow [2023-08-24 18:34:11,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 304 places, 328 transitions, 752 flow [2023-08-24 18:34:11,926 INFO L124 PetriNetUnfolderBase]: 49/422 cut-off events. [2023-08-24 18:34:11,926 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2023-08-24 18:34:11,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 422 events. 49/422 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1417 event pairs, 0 based on Foata normal form. 0/324 useless extension candidates. Maximal degree in co-relation 413. Up to 18 conditions per place. [2023-08-24 18:34:11,944 INFO L119 LiptonReduction]: Number of co-enabled transitions 86432 [2023-08-24 18:34:18,186 INFO L134 LiptonReduction]: Checked pairs total: 93403 [2023-08-24 18:34:18,187 INFO L136 LiptonReduction]: Total number of compositions: 409 [2023-08-24 18:34:18,188 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 18:34:18,188 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;@60a511ab, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 18:34:18,188 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2023-08-24 18:34:18,189 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 18:34:18,189 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-24 18:34:18,189 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:34:18,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:34:18,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-24 18:34:18,190 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2023-08-24 18:34:18,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:34:18,190 INFO L85 PathProgramCache]: Analyzing trace with hash 119727790, now seen corresponding path program 1 times [2023-08-24 18:34:18,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:34:18,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656913554] [2023-08-24 18:34:18,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:34:18,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:34:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:34:18,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:34:18,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:34:18,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656913554] [2023-08-24 18:34:18,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656913554] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:34:18,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:34:18,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 18:34:18,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028663730] [2023-08-24 18:34:18,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:34:18,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-24 18:34:18,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:34:18,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-24 18:34:18,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-24 18:34:18,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 737 [2023-08-24 18:34:18,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 70 transitions, 236 flow. Second operand has 2 states, 2 states have (on average 248.0) internal successors, (496), 2 states have internal predecessors, (496), 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) [2023-08-24 18:34:18,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:34:18,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 737 [2023-08-24 18:34:18,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:34:28,087 INFO L124 PetriNetUnfolderBase]: 91856/120285 cut-off events. [2023-08-24 18:34:28,087 INFO L125 PetriNetUnfolderBase]: For 158830/158830 co-relation queries the response was YES. [2023-08-24 18:34:28,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277213 conditions, 120285 events. 91856/120285 cut-off events. For 158830/158830 co-relation queries the response was YES. Maximal size of possible extension queue 4108. Compared 716798 event pairs, 91856 based on Foata normal form. 0/117005 useless extension candidates. Maximal degree in co-relation 83653. Up to 111539 conditions per place. [2023-08-24 18:34:28,743 INFO L140 encePairwiseOnDemand]: 696/737 looper letters, 26 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2023-08-24 18:34:28,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 29 transitions, 206 flow [2023-08-24 18:34:28,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-24 18:34:28,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-24 18:34:28,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 559 transitions. [2023-08-24 18:34:28,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37924016282225237 [2023-08-24 18:34:28,744 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 559 transitions. [2023-08-24 18:34:28,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 559 transitions. [2023-08-24 18:34:28,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:34:28,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 559 transitions. [2023-08-24 18:34:28,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 279.5) internal successors, (559), 2 states have internal predecessors, (559), 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) [2023-08-24 18:34:28,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 737.0) internal successors, (2211), 3 states have internal predecessors, (2211), 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) [2023-08-24 18:34:28,748 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 737.0) internal successors, (2211), 3 states have internal predecessors, (2211), 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) [2023-08-24 18:34:28,748 INFO L175 Difference]: Start difference. First operand has 87 places, 70 transitions, 236 flow. Second operand 2 states and 559 transitions. [2023-08-24 18:34:28,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 29 transitions, 206 flow [2023-08-24 18:34:29,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 29 transitions, 150 flow, removed 28 selfloop flow, removed 0 redundant places. [2023-08-24 18:34:29,054 INFO L231 Difference]: Finished difference. Result has 47 places, 29 transitions, 98 flow [2023-08-24 18:34:29,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=737, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=98, PETRI_PLACES=47, PETRI_TRANSITIONS=29} [2023-08-24 18:34:29,054 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -40 predicate places. [2023-08-24 18:34:29,054 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 29 transitions, 98 flow [2023-08-24 18:34:29,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 248.0) internal successors, (496), 2 states have internal predecessors, (496), 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) [2023-08-24 18:34:29,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:34:29,055 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:34:29,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-24 18:34:29,055 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2023-08-24 18:34:29,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:34:29,055 INFO L85 PathProgramCache]: Analyzing trace with hash 285111689, now seen corresponding path program 1 times [2023-08-24 18:34:29,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:34:29,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681622353] [2023-08-24 18:34:29,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:34:29,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:34:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:34:29,071 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 18:34:29,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:34:29,084 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 18:34:29,085 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 18:34:29,085 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (45 of 46 remaining) [2023-08-24 18:34:29,085 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (44 of 46 remaining) [2023-08-24 18:34:29,085 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (43 of 46 remaining) [2023-08-24 18:34:29,086 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (42 of 46 remaining) [2023-08-24 18:34:29,086 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (41 of 46 remaining) [2023-08-24 18:34:29,086 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (40 of 46 remaining) [2023-08-24 18:34:29,086 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (39 of 46 remaining) [2023-08-24 18:34:29,086 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (38 of 46 remaining) [2023-08-24 18:34:29,086 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (37 of 46 remaining) [2023-08-24 18:34:29,086 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (36 of 46 remaining) [2023-08-24 18:34:29,086 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (35 of 46 remaining) [2023-08-24 18:34:29,086 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (34 of 46 remaining) [2023-08-24 18:34:29,086 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (33 of 46 remaining) [2023-08-24 18:34:29,086 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (32 of 46 remaining) [2023-08-24 18:34:29,086 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (31 of 46 remaining) [2023-08-24 18:34:29,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (30 of 46 remaining) [2023-08-24 18:34:29,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 46 remaining) [2023-08-24 18:34:29,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 46 remaining) [2023-08-24 18:34:29,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (27 of 46 remaining) [2023-08-24 18:34:29,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (26 of 46 remaining) [2023-08-24 18:34:29,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (25 of 46 remaining) [2023-08-24 18:34:29,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 46 remaining) [2023-08-24 18:34:29,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 46 remaining) [2023-08-24 18:34:29,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (22 of 46 remaining) [2023-08-24 18:34:29,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (21 of 46 remaining) [2023-08-24 18:34:29,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (20 of 46 remaining) [2023-08-24 18:34:29,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 46 remaining) [2023-08-24 18:34:29,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 46 remaining) [2023-08-24 18:34:29,088 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 46 remaining) [2023-08-24 18:34:29,088 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 46 remaining) [2023-08-24 18:34:29,088 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (15 of 46 remaining) [2023-08-24 18:34:29,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 46 remaining) [2023-08-24 18:34:29,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 46 remaining) [2023-08-24 18:34:29,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 46 remaining) [2023-08-24 18:34:29,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (11 of 46 remaining) [2023-08-24 18:34:29,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (10 of 46 remaining) [2023-08-24 18:34:29,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 46 remaining) [2023-08-24 18:34:29,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 46 remaining) [2023-08-24 18:34:29,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 46 remaining) [2023-08-24 18:34:29,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (6 of 46 remaining) [2023-08-24 18:34:29,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (5 of 46 remaining) [2023-08-24 18:34:29,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 46 remaining) [2023-08-24 18:34:29,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 46 remaining) [2023-08-24 18:34:29,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 46 remaining) [2023-08-24 18:34:29,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 46 remaining) [2023-08-24 18:34:29,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (0 of 46 remaining) [2023-08-24 18:34:29,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-24 18:34:29,090 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-24 18:34:29,093 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 18:34:29,093 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-24 18:34:29,124 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 18:34:29,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 339 places, 366 transitions, 849 flow [2023-08-24 18:34:29,179 INFO L124 PetriNetUnfolderBase]: 55/472 cut-off events. [2023-08-24 18:34:29,179 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2023-08-24 18:34:29,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 472 events. 55/472 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1622 event pairs, 0 based on Foata normal form. 0/362 useless extension candidates. Maximal degree in co-relation 474. Up to 20 conditions per place. [2023-08-24 18:34:29,184 INFO L82 GeneralOperation]: Start removeDead. Operand has 339 places, 366 transitions, 849 flow [2023-08-24 18:34:29,189 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 339 places, 366 transitions, 849 flow [2023-08-24 18:34:29,189 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 18:34:29,189 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 339 places, 366 transitions, 849 flow [2023-08-24 18:34:29,189 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 339 places, 366 transitions, 849 flow [2023-08-24 18:34:29,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 339 places, 366 transitions, 849 flow [2023-08-24 18:34:29,242 INFO L124 PetriNetUnfolderBase]: 55/472 cut-off events. [2023-08-24 18:34:29,242 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2023-08-24 18:34:29,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 472 events. 55/472 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1622 event pairs, 0 based on Foata normal form. 0/362 useless extension candidates. Maximal degree in co-relation 474. Up to 20 conditions per place. [2023-08-24 18:34:29,267 INFO L119 LiptonReduction]: Number of co-enabled transitions 109890 [2023-08-24 18:34:36,629 INFO L134 LiptonReduction]: Checked pairs total: 122590 [2023-08-24 18:34:36,629 INFO L136 LiptonReduction]: Total number of compositions: 469 [2023-08-24 18:34:36,631 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 18:34:36,631 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;@60a511ab, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 18:34:36,631 INFO L358 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2023-08-24 18:34:36,632 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 18:34:36,632 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-24 18:34:36,632 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:34:36,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:34:36,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-24 18:34:36,632 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 47 more)] === [2023-08-24 18:34:36,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:34:36,633 INFO L85 PathProgramCache]: Analyzing trace with hash 146457132, now seen corresponding path program 1 times [2023-08-24 18:34:36,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:34:36,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446496293] [2023-08-24 18:34:36,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:34:36,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:34:36,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:34:36,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:34:36,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:34:36,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446496293] [2023-08-24 18:34:36,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446496293] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:34:36,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:34:36,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 18:34:36,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004943532] [2023-08-24 18:34:36,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:34:36,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-24 18:34:36,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:34:36,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-24 18:34:36,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-24 18:34:36,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 835 [2023-08-24 18:34:36,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 78 transitions, 273 flow. Second operand has 2 states, 2 states have (on average 276.0) internal successors, (552), 2 states have internal predecessors, (552), 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) [2023-08-24 18:34:36,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:34:36,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 835 [2023-08-24 18:34:36,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:35:11,670 INFO L124 PetriNetUnfolderBase]: 314930/400221 cut-off events. [2023-08-24 18:35:11,670 INFO L125 PetriNetUnfolderBase]: For 609352/609352 co-relation queries the response was YES. [2023-08-24 18:35:12,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 926753 conditions, 400221 events. 314930/400221 cut-off events. For 609352/609352 co-relation queries the response was YES. Maximal size of possible extension queue 11911. Compared 2457021 event pairs, 314930 based on Foata normal form. 0/390379 useless extension candidates. Maximal degree in co-relation 282670. Up to 373979 conditions per place. [2023-08-24 18:35:13,990 INFO L140 encePairwiseOnDemand]: 789/835 looper letters, 29 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2023-08-24 18:35:13,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 32 transitions, 239 flow [2023-08-24 18:35:13,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-24 18:35:13,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-24 18:35:13,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 623 transitions. [2023-08-24 18:35:13,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37305389221556884 [2023-08-24 18:35:13,992 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 623 transitions. [2023-08-24 18:35:13,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 623 transitions. [2023-08-24 18:35:13,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:35:13,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 623 transitions. [2023-08-24 18:35:13,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 311.5) internal successors, (623), 2 states have internal predecessors, (623), 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) [2023-08-24 18:35:13,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 835.0) internal successors, (2505), 3 states have internal predecessors, (2505), 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) [2023-08-24 18:35:13,997 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 835.0) internal successors, (2505), 3 states have internal predecessors, (2505), 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) [2023-08-24 18:35:13,997 INFO L175 Difference]: Start difference. First operand has 97 places, 78 transitions, 273 flow. Second operand 2 states and 623 transitions. [2023-08-24 18:35:13,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 32 transitions, 239 flow [2023-08-24 18:35:14,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 32 transitions, 167 flow, removed 36 selfloop flow, removed 0 redundant places. [2023-08-24 18:35:14,793 INFO L231 Difference]: Finished difference. Result has 52 places, 32 transitions, 109 flow [2023-08-24 18:35:14,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=835, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=109, PETRI_PLACES=52, PETRI_TRANSITIONS=32} [2023-08-24 18:35:14,794 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -45 predicate places. [2023-08-24 18:35:14,794 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 32 transitions, 109 flow [2023-08-24 18:35:14,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 276.0) internal successors, (552), 2 states have internal predecessors, (552), 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) [2023-08-24 18:35:14,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:35:14,794 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:35:14,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-24 18:35:14,794 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 47 more)] === [2023-08-24 18:35:14,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:35:14,795 INFO L85 PathProgramCache]: Analyzing trace with hash 732086230, now seen corresponding path program 1 times [2023-08-24 18:35:14,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:35:14,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384653818] [2023-08-24 18:35:14,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:35:14,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:35:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:35:14,814 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 18:35:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:35:14,829 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 18:35:14,830 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 18:35:14,830 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (50 of 51 remaining) [2023-08-24 18:35:14,830 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (49 of 51 remaining) [2023-08-24 18:35:14,830 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (48 of 51 remaining) [2023-08-24 18:35:14,830 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (47 of 51 remaining) [2023-08-24 18:35:14,830 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (46 of 51 remaining) [2023-08-24 18:35:14,830 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (45 of 51 remaining) [2023-08-24 18:35:14,830 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (44 of 51 remaining) [2023-08-24 18:35:14,830 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (43 of 51 remaining) [2023-08-24 18:35:14,830 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (42 of 51 remaining) [2023-08-24 18:35:14,830 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (41 of 51 remaining) [2023-08-24 18:35:14,830 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (40 of 51 remaining) [2023-08-24 18:35:14,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (39 of 51 remaining) [2023-08-24 18:35:14,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (38 of 51 remaining) [2023-08-24 18:35:14,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (37 of 51 remaining) [2023-08-24 18:35:14,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (36 of 51 remaining) [2023-08-24 18:35:14,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (35 of 51 remaining) [2023-08-24 18:35:14,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (34 of 51 remaining) [2023-08-24 18:35:14,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (33 of 51 remaining) [2023-08-24 18:35:14,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (32 of 51 remaining) [2023-08-24 18:35:14,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (31 of 51 remaining) [2023-08-24 18:35:14,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (30 of 51 remaining) [2023-08-24 18:35:14,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 51 remaining) [2023-08-24 18:35:14,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 51 remaining) [2023-08-24 18:35:14,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (27 of 51 remaining) [2023-08-24 18:35:14,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (26 of 51 remaining) [2023-08-24 18:35:14,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (25 of 51 remaining) [2023-08-24 18:35:14,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 51 remaining) [2023-08-24 18:35:14,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 51 remaining) [2023-08-24 18:35:14,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (22 of 51 remaining) [2023-08-24 18:35:14,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (21 of 51 remaining) [2023-08-24 18:35:14,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (20 of 51 remaining) [2023-08-24 18:35:14,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 51 remaining) [2023-08-24 18:35:14,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 51 remaining) [2023-08-24 18:35:14,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 51 remaining) [2023-08-24 18:35:14,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 51 remaining) [2023-08-24 18:35:14,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (15 of 51 remaining) [2023-08-24 18:35:14,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 51 remaining) [2023-08-24 18:35:14,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 51 remaining) [2023-08-24 18:35:14,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 51 remaining) [2023-08-24 18:35:14,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (11 of 51 remaining) [2023-08-24 18:35:14,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (10 of 51 remaining) [2023-08-24 18:35:14,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 51 remaining) [2023-08-24 18:35:14,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 51 remaining) [2023-08-24 18:35:14,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 51 remaining) [2023-08-24 18:35:14,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (6 of 51 remaining) [2023-08-24 18:35:14,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (5 of 51 remaining) [2023-08-24 18:35:14,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 51 remaining) [2023-08-24 18:35:14,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 51 remaining) [2023-08-24 18:35:14,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 51 remaining) [2023-08-24 18:35:14,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 51 remaining) [2023-08-24 18:35:14,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (0 of 51 remaining) [2023-08-24 18:35:14,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-24 18:35:14,836 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-24 18:35:14,836 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 18:35:14,836 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-24 18:35:14,867 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 18:35:14,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 374 places, 404 transitions, 948 flow [2023-08-24 18:35:14,921 INFO L124 PetriNetUnfolderBase]: 61/522 cut-off events. [2023-08-24 18:35:14,921 INFO L125 PetriNetUnfolderBase]: For 210/210 co-relation queries the response was YES. [2023-08-24 18:35:14,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 608 conditions, 522 events. 61/522 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1828 event pairs, 0 based on Foata normal form. 0/400 useless extension candidates. Maximal degree in co-relation 536. Up to 22 conditions per place. [2023-08-24 18:35:14,927 INFO L82 GeneralOperation]: Start removeDead. Operand has 374 places, 404 transitions, 948 flow [2023-08-24 18:35:15,058 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 374 places, 404 transitions, 948 flow [2023-08-24 18:35:15,059 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 18:35:15,059 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 374 places, 404 transitions, 948 flow [2023-08-24 18:35:15,059 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 374 places, 404 transitions, 948 flow [2023-08-24 18:35:15,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 374 places, 404 transitions, 948 flow [2023-08-24 18:35:15,109 INFO L124 PetriNetUnfolderBase]: 61/522 cut-off events. [2023-08-24 18:35:15,109 INFO L125 PetriNetUnfolderBase]: For 210/210 co-relation queries the response was YES. [2023-08-24 18:35:15,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 608 conditions, 522 events. 61/522 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1828 event pairs, 0 based on Foata normal form. 0/400 useless extension candidates. Maximal degree in co-relation 536. Up to 22 conditions per place. [2023-08-24 18:35:15,134 INFO L119 LiptonReduction]: Number of co-enabled transitions 136160 [2023-08-24 18:35:22,199 INFO L134 LiptonReduction]: Checked pairs total: 147102 [2023-08-24 18:35:22,199 INFO L136 LiptonReduction]: Total number of compositions: 504 [2023-08-24 18:35:22,200 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 18:35:22,200 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;@60a511ab, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 18:35:22,200 INFO L358 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2023-08-24 18:35:22,201 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 18:35:22,201 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-24 18:35:22,201 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:35:22,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:35:22,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-24 18:35:22,201 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 52 more)] === [2023-08-24 18:35:22,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:35:22,201 INFO L85 PathProgramCache]: Analyzing trace with hash 175205805, now seen corresponding path program 1 times [2023-08-24 18:35:22,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:35:22,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722281451] [2023-08-24 18:35:22,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:35:22,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:35:22,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:35:22,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:35:22,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:35:22,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722281451] [2023-08-24 18:35:22,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722281451] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:35:22,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:35:22,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 18:35:22,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073776013] [2023-08-24 18:35:22,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:35:22,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-24 18:35:22,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:35:22,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-24 18:35:22,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-24 18:35:22,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 908 [2023-08-24 18:35:22,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 86 transitions, 312 flow. Second operand has 2 states, 2 states have (on average 304.0) internal successors, (608), 2 states have internal predecessors, (608), 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) [2023-08-24 18:35:22,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:35:22,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 908 [2023-08-24 18:35:22,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand