./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-deagle/floating_read-20.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-deagle/floating_read-20.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cd83ac16197366132446ebf4fbdedd8712860068d55cee6f01a283271b044e15 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 18:00:08,011 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 18:00:08,090 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-22 18:00:08,094 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 18:00:08,095 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 18:00:08,117 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 18:00:08,118 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 18:00:08,118 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 18:00:08,119 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 18:00:08,119 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 18:00:08,120 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 18:00:08,120 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 18:00:08,120 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 18:00:08,121 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 18:00:08,121 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 18:00:08,122 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 18:00:08,122 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 18:00:08,122 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 18:00:08,123 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 18:00:08,123 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 18:00:08,123 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 18:00:08,124 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 18:00:08,124 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-22 18:00:08,125 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 18:00:08,125 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 18:00:08,125 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 18:00:08,126 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 18:00:08,126 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 18:00:08,127 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 18:00:08,127 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 18:00:08,127 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 18:00:08,128 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 18:00:08,128 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 18:00:08,129 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 18:00:08,129 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 18:00:08,129 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 18:00:08,130 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 18:00:08,130 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 18:00:08,130 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 18:00:08,131 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 18:00:08,131 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 18:00:08,132 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd83ac16197366132446ebf4fbdedd8712860068d55cee6f01a283271b044e15 [2024-11-22 18:00:08,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 18:00:08,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 18:00:08,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 18:00:08,476 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 18:00:08,477 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 18:00:08,479 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-deagle/floating_read-20.i [2024-11-22 18:00:10,115 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 18:00:10,366 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 18:00:10,368 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/floating_read-20.i [2024-11-22 18:00:10,385 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d079ae32/fcfe153b46f049aeaeb025635a4a6084/FLAG51b05c395 [2024-11-22 18:00:10,400 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d079ae32/fcfe153b46f049aeaeb025635a4a6084 [2024-11-22 18:00:10,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 18:00:10,403 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 18:00:10,405 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 18:00:10,405 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 18:00:10,410 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 18:00:10,411 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:00:10" (1/1) ... [2024-11-22 18:00:10,414 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63d9d17b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:00:10, skipping insertion in model container [2024-11-22 18:00:10,414 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:00:10" (1/1) ... [2024-11-22 18:00:10,470 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 18:00:10,818 WARN L1674 CHandler]: Possible shadowing of function thread [2024-11-22 18:00:10,837 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 18:00:10,848 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 18:00:10,896 WARN L1674 CHandler]: Possible shadowing of function thread [2024-11-22 18:00:10,905 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 18:00:10,945 INFO L204 MainTranslator]: Completed translation [2024-11-22 18:00:10,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:00:10 WrapperNode [2024-11-22 18:00:10,950 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 18:00:10,951 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 18:00:10,955 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 18:00:10,955 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 18:00:10,960 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:00:10" (1/1) ... [2024-11-22 18:00:10,974 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:00:10" (1/1) ... [2024-11-22 18:00:10,994 INFO L138 Inliner]: procedures = 162, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 68 [2024-11-22 18:00:10,995 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 18:00:10,995 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 18:00:10,995 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 18:00:10,996 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 18:00:11,003 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:00:10" (1/1) ... [2024-11-22 18:00:11,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:00:10" (1/1) ... [2024-11-22 18:00:11,007 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:00:10" (1/1) ... [2024-11-22 18:00:11,009 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:00:10" (1/1) ... [2024-11-22 18:00:11,019 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:00:10" (1/1) ... [2024-11-22 18:00:11,023 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:00:10" (1/1) ... [2024-11-22 18:00:11,024 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:00:10" (1/1) ... [2024-11-22 18:00:11,029 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:00:10" (1/1) ... [2024-11-22 18:00:11,031 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 18:00:11,032 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 18:00:11,032 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 18:00:11,032 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 18:00:11,035 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:00:10" (1/1) ... [2024-11-22 18:00:11,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 18:00:11,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:00:11,067 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 18:00:11,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 18:00:11,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-22 18:00:11,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-22 18:00:11,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-22 18:00:11,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 18:00:11,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-22 18:00:11,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 18:00:11,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-22 18:00:11,114 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2024-11-22 18:00:11,114 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2024-11-22 18:00:11,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-22 18:00:11,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 18:00:11,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 18:00:11,117 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 18:00:11,225 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 18:00:11,227 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 18:00:11,405 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 18:00:11,406 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 18:00:11,445 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 18:00:11,445 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-22 18:00:11,446 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:00:11 BoogieIcfgContainer [2024-11-22 18:00:11,446 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 18:00:11,450 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 18:00:11,451 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 18:00:11,454 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 18:00:11,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 06:00:10" (1/3) ... [2024-11-22 18:00:11,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f412e3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:00:11, skipping insertion in model container [2024-11-22 18:00:11,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:00:10" (2/3) ... [2024-11-22 18:00:11,456 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f412e3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:00:11, skipping insertion in model container [2024-11-22 18:00:11,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:00:11" (3/3) ... [2024-11-22 18:00:11,458 INFO L112 eAbstractionObserver]: Analyzing ICFG floating_read-20.i [2024-11-22 18:00:11,475 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 18:00:11,476 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-11-22 18:00:11,476 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 18:00:11,528 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-22 18:00:11,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 75 transitions, 157 flow [2024-11-22 18:00:11,627 INFO L124 PetriNetUnfolderBase]: 9/119 cut-off events. [2024-11-22 18:00:11,628 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-22 18:00:11,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 119 events. 9/119 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 230 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 60. Up to 4 conditions per place. [2024-11-22 18:00:11,636 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 75 transitions, 157 flow [2024-11-22 18:00:11,639 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 75 transitions, 157 flow [2024-11-22 18:00:11,650 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 18:00:11,658 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@3fc1f1e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 18:00:11,658 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-22 18:00:11,663 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 18:00:11,665 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2024-11-22 18:00:11,665 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 18:00:11,665 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:11,666 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:11,666 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-11-22 18:00:11,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:11,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1413199819, now seen corresponding path program 1 times [2024-11-22 18:00:11,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:11,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81557336] [2024-11-22 18:00:11,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:11,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:11,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:11,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:11,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81557336] [2024-11-22 18:00:11,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81557336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:00:11,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:00:11,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 18:00:11,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438500058] [2024-11-22 18:00:11,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:00:11,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 18:00:11,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:11,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 18:00:11,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 18:00:11,966 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 75 [2024-11-22 18:00:11,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 75 transitions, 157 flow. Second operand has 2 states, 2 states have (on average 64.5) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:11,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:11,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 75 [2024-11-22 18:00:11,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 18:00:12,014 INFO L124 PetriNetUnfolderBase]: 1/105 cut-off events. [2024-11-22 18:00:12,015 INFO L125 PetriNetUnfolderBase]: For 5/6 co-relation queries the response was YES. [2024-11-22 18:00:12,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 105 events. 1/105 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 190 event pairs, 0 based on Foata normal form. 8/101 useless extension candidates. Maximal degree in co-relation 3. Up to 5 conditions per place. [2024-11-22 18:00:12,016 INFO L140 encePairwiseOnDemand]: 69/75 looper letters, 4 selfloop transitions, 0 changer transitions 12/67 dead transitions. [2024-11-22 18:00:12,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 67 transitions, 149 flow [2024-11-22 18:00:12,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 18:00:12,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-22 18:00:12,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 138 transitions. [2024-11-22 18:00:12,026 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.92 [2024-11-22 18:00:12,028 INFO L175 Difference]: Start difference. First operand has 73 places, 75 transitions, 157 flow. Second operand 2 states and 138 transitions. [2024-11-22 18:00:12,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 67 transitions, 149 flow [2024-11-22 18:00:12,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 67 transitions, 149 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 18:00:12,032 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 117 flow [2024-11-22 18:00:12,034 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=117, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2024-11-22 18:00:12,037 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -3 predicate places. [2024-11-22 18:00:12,037 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 117 flow [2024-11-22 18:00:12,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 64.5) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:12,038 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:12,038 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:12,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 18:00:12,038 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-11-22 18:00:12,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:12,039 INFO L85 PathProgramCache]: Analyzing trace with hash -968080929, now seen corresponding path program 1 times [2024-11-22 18:00:12,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:12,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424885372] [2024-11-22 18:00:12,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:12,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:12,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:12,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:12,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424885372] [2024-11-22 18:00:12,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424885372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:00:12,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:00:12,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 18:00:12,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665752773] [2024-11-22 18:00:12,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:00:12,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:00:12,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:12,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:00:12,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:00:12,183 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 75 [2024-11-22 18:00:12,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:12,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:12,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 75 [2024-11-22 18:00:12,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 18:00:12,224 INFO L124 PetriNetUnfolderBase]: 3/106 cut-off events. [2024-11-22 18:00:12,224 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-22 18:00:12,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 106 events. 3/106 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 190 event pairs, 0 based on Foata normal form. 1/99 useless extension candidates. Maximal degree in co-relation 124. Up to 13 conditions per place. [2024-11-22 18:00:12,225 INFO L140 encePairwiseOnDemand]: 72/75 looper letters, 8 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2024-11-22 18:00:12,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 56 transitions, 139 flow [2024-11-22 18:00:12,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:00:12,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 18:00:12,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 185 transitions. [2024-11-22 18:00:12,229 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8222222222222222 [2024-11-22 18:00:12,230 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 117 flow. Second operand 3 states and 185 transitions. [2024-11-22 18:00:12,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 56 transitions, 139 flow [2024-11-22 18:00:12,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 56 transitions, 139 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 18:00:12,233 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 125 flow [2024-11-22 18:00:12,233 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-11-22 18:00:12,234 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -12 predicate places. [2024-11-22 18:00:12,234 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 125 flow [2024-11-22 18:00:12,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:12,235 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:12,235 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:12,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 18:00:12,236 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-11-22 18:00:12,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:12,236 INFO L85 PathProgramCache]: Analyzing trace with hash 305169799, now seen corresponding path program 1 times [2024-11-22 18:00:12,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:12,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013735039] [2024-11-22 18:00:12,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:12,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:12,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:12,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:12,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013735039] [2024-11-22 18:00:12,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013735039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:00:12,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:00:12,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 18:00:12,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678898041] [2024-11-22 18:00:12,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:00:12,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 18:00:12,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:12,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 18:00:12,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:00:13,019 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 75 [2024-11-22 18:00:13,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 125 flow. Second operand has 6 states, 6 states have (on average 47.666666666666664) internal successors, (286), 6 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:13,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:13,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 75 [2024-11-22 18:00:13,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 18:00:13,093 INFO L124 PetriNetUnfolderBase]: 12/112 cut-off events. [2024-11-22 18:00:13,093 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-22 18:00:13,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 112 events. 12/112 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 255 event pairs, 2 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 175. Up to 32 conditions per place. [2024-11-22 18:00:13,095 INFO L140 encePairwiseOnDemand]: 69/75 looper letters, 18 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-11-22 18:00:13,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 58 transitions, 177 flow [2024-11-22 18:00:13,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 18:00:13,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 18:00:13,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 300 transitions. [2024-11-22 18:00:13,099 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-22 18:00:13,099 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 125 flow. Second operand 6 states and 300 transitions. [2024-11-22 18:00:13,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 58 transitions, 177 flow [2024-11-22 18:00:13,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 58 transitions, 173 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 18:00:13,104 INFO L231 Difference]: Finished difference. Result has 63 places, 54 transitions, 129 flow [2024-11-22 18:00:13,104 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=129, PETRI_PLACES=63, PETRI_TRANSITIONS=54} [2024-11-22 18:00:13,105 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -10 predicate places. [2024-11-22 18:00:13,105 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 54 transitions, 129 flow [2024-11-22 18:00:13,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 47.666666666666664) internal successors, (286), 6 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:13,106 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:13,106 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:13,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 18:00:13,107 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-11-22 18:00:13,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:13,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1477123848, now seen corresponding path program 1 times [2024-11-22 18:00:13,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:13,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825120828] [2024-11-22 18:00:13,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:13,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:13,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:13,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:13,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825120828] [2024-11-22 18:00:13,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825120828] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:00:13,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949837924] [2024-11-22 18:00:13,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:13,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:00:13,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:00:13,207 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:00:13,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 18:00:13,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:13,296 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 18:00:13,303 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:00:13,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:00:13,323 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 18:00:13,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949837924] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:00:13,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 18:00:13,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-22 18:00:13,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968847925] [2024-11-22 18:00:13,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:00:13,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:00:13,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:13,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:00:13,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:00:13,329 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2024-11-22 18:00:13,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 54 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:13,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:13,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2024-11-22 18:00:13,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 18:00:13,372 INFO L124 PetriNetUnfolderBase]: 1/103 cut-off events. [2024-11-22 18:00:13,375 INFO L125 PetriNetUnfolderBase]: For 7/8 co-relation queries the response was YES. [2024-11-22 18:00:13,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 103 events. 1/103 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 158 event pairs, 0 based on Foata normal form. 1/98 useless extension candidates. Maximal degree in co-relation 131. Up to 8 conditions per place. [2024-11-22 18:00:13,376 INFO L140 encePairwiseOnDemand]: 71/75 looper letters, 7 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2024-11-22 18:00:13,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 57 transitions, 158 flow [2024-11-22 18:00:13,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:00:13,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 18:00:13,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 194 transitions. [2024-11-22 18:00:13,378 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8622222222222222 [2024-11-22 18:00:13,378 INFO L175 Difference]: Start difference. First operand has 63 places, 54 transitions, 129 flow. Second operand 3 states and 194 transitions. [2024-11-22 18:00:13,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 57 transitions, 158 flow [2024-11-22 18:00:13,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 57 transitions, 148 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-22 18:00:13,380 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 141 flow [2024-11-22 18:00:13,383 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2024-11-22 18:00:13,383 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -11 predicate places. [2024-11-22 18:00:13,384 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 141 flow [2024-11-22 18:00:13,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:13,384 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:13,384 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:13,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 18:00:13,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:00:13,590 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-11-22 18:00:13,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:13,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1236436539, now seen corresponding path program 1 times [2024-11-22 18:00:13,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:13,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294907317] [2024-11-22 18:00:13,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:13,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:13,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:13,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:13,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294907317] [2024-11-22 18:00:13,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294907317] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:00:13,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605506333] [2024-11-22 18:00:13,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:13,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:00:13,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:00:13,689 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:00:13,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 18:00:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:13,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 18:00:13,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:00:13,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:13,826 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:00:13,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:13,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605506333] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:00:13,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:00:13,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-22 18:00:13,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173584023] [2024-11-22 18:00:13,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:00:13,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 18:00:13,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:13,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 18:00:13,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-22 18:00:13,948 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 75 [2024-11-22 18:00:13,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 141 flow. Second operand has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:13,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:13,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 75 [2024-11-22 18:00:13,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 18:00:13,990 INFO L124 PetriNetUnfolderBase]: 4/63 cut-off events. [2024-11-22 18:00:13,991 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-22 18:00:13,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 63 events. 4/63 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 65 event pairs, 0 based on Foata normal form. 2/65 useless extension candidates. Maximal degree in co-relation 90. Up to 6 conditions per place. [2024-11-22 18:00:13,991 INFO L140 encePairwiseOnDemand]: 70/75 looper letters, 9 selfloop transitions, 4 changer transitions 0/39 dead transitions. [2024-11-22 18:00:13,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 39 transitions, 118 flow [2024-11-22 18:00:13,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 18:00:13,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 18:00:13,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 344 transitions. [2024-11-22 18:00:13,993 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7644444444444445 [2024-11-22 18:00:13,994 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 141 flow. Second operand 6 states and 344 transitions. [2024-11-22 18:00:13,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 39 transitions, 118 flow [2024-11-22 18:00:13,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 39 transitions, 108 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-22 18:00:13,995 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 82 flow [2024-11-22 18:00:13,995 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=82, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2024-11-22 18:00:13,996 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -28 predicate places. [2024-11-22 18:00:13,996 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 82 flow [2024-11-22 18:00:13,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:13,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:13,997 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:14,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 18:00:14,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:00:14,202 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-11-22 18:00:14,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:14,203 INFO L85 PathProgramCache]: Analyzing trace with hash -684794120, now seen corresponding path program 1 times [2024-11-22 18:00:14,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:14,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362978360] [2024-11-22 18:00:14,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:14,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:14,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 18:00:14,227 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 18:00:14,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 18:00:14,260 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 18:00:14,261 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 18:00:14,262 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-22 18:00:14,263 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2024-11-22 18:00:14,264 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2024-11-22 18:00:14,264 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2024-11-22 18:00:14,264 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2024-11-22 18:00:14,264 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2024-11-22 18:00:14,264 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2024-11-22 18:00:14,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 18:00:14,265 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-22 18:00:14,268 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 18:00:14,268 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-22 18:00:14,287 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-22 18:00:14,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 83 transitions, 182 flow [2024-11-22 18:00:14,324 INFO L124 PetriNetUnfolderBase]: 16/200 cut-off events. [2024-11-22 18:00:14,325 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-22 18:00:14,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 200 events. 16/200 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 443 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 121. Up to 8 conditions per place. [2024-11-22 18:00:14,326 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 83 transitions, 182 flow [2024-11-22 18:00:14,327 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 83 transitions, 182 flow [2024-11-22 18:00:14,329 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 18:00:14,330 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@3fc1f1e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 18:00:14,331 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-22 18:00:14,332 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 18:00:14,333 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2024-11-22 18:00:14,333 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 18:00:14,334 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:14,334 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:14,335 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-11-22 18:00:14,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:14,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1432291435, now seen corresponding path program 1 times [2024-11-22 18:00:14,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:14,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142203880] [2024-11-22 18:00:14,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:14,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:14,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:14,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:14,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142203880] [2024-11-22 18:00:14,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142203880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:00:14,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:00:14,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 18:00:14,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816247248] [2024-11-22 18:00:14,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:00:14,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 18:00:14,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:14,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 18:00:14,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 18:00:14,351 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 83 [2024-11-22 18:00:14,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 83 transitions, 182 flow. Second operand has 2 states, 2 states have (on average 68.5) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:14,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:14,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 83 [2024-11-22 18:00:14,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 18:00:14,382 INFO L124 PetriNetUnfolderBase]: 7/212 cut-off events. [2024-11-22 18:00:14,383 INFO L125 PetriNetUnfolderBase]: For 31/40 co-relation queries the response was YES. [2024-11-22 18:00:14,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 212 events. 7/212 cut-off events. For 31/40 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 541 event pairs, 4 based on Foata normal form. 16/203 useless extension candidates. Maximal degree in co-relation 111. Up to 18 conditions per place. [2024-11-22 18:00:14,384 INFO L140 encePairwiseOnDemand]: 76/83 looper letters, 7 selfloop transitions, 0 changer transitions 0/74 dead transitions. [2024-11-22 18:00:14,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 74 transitions, 178 flow [2024-11-22 18:00:14,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 18:00:14,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-22 18:00:14,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 150 transitions. [2024-11-22 18:00:14,386 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9036144578313253 [2024-11-22 18:00:14,386 INFO L175 Difference]: Start difference. First operand has 82 places, 83 transitions, 182 flow. Second operand 2 states and 150 transitions. [2024-11-22 18:00:14,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 74 transitions, 178 flow [2024-11-22 18:00:14,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 74 transitions, 178 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 18:00:14,390 INFO L231 Difference]: Finished difference. Result has 78 places, 74 transitions, 164 flow [2024-11-22 18:00:14,391 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=164, PETRI_PLACES=78, PETRI_TRANSITIONS=74} [2024-11-22 18:00:14,392 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, -4 predicate places. [2024-11-22 18:00:14,394 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 74 transitions, 164 flow [2024-11-22 18:00:14,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 68.5) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:14,394 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:14,394 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:14,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 18:00:14,395 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-11-22 18:00:14,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:14,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1669664558, now seen corresponding path program 1 times [2024-11-22 18:00:14,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:14,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783906334] [2024-11-22 18:00:14,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:14,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:14,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:14,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:14,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783906334] [2024-11-22 18:00:14,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783906334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:00:14,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:00:14,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 18:00:14,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241471154] [2024-11-22 18:00:14,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:00:14,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:00:14,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:14,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:00:14,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:00:14,455 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 83 [2024-11-22 18:00:14,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 74 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:14,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:14,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 83 [2024-11-22 18:00:14,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 18:00:14,508 INFO L124 PetriNetUnfolderBase]: 28/388 cut-off events. [2024-11-22 18:00:14,508 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-11-22 18:00:14,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 388 events. 28/388 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1856 event pairs, 10 based on Foata normal form. 1/350 useless extension candidates. Maximal degree in co-relation 469. Up to 65 conditions per place. [2024-11-22 18:00:14,512 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 12 selfloop transitions, 2 changer transitions 3/76 dead transitions. [2024-11-22 18:00:14,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 76 transitions, 198 flow [2024-11-22 18:00:14,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:00:14,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 18:00:14,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 202 transitions. [2024-11-22 18:00:14,515 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8112449799196787 [2024-11-22 18:00:14,515 INFO L175 Difference]: Start difference. First operand has 78 places, 74 transitions, 164 flow. Second operand 3 states and 202 transitions. [2024-11-22 18:00:14,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 76 transitions, 198 flow [2024-11-22 18:00:14,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 76 transitions, 198 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 18:00:14,517 INFO L231 Difference]: Finished difference. Result has 81 places, 72 transitions, 170 flow [2024-11-22 18:00:14,517 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=81, PETRI_TRANSITIONS=72} [2024-11-22 18:00:14,518 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, -1 predicate places. [2024-11-22 18:00:14,518 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 72 transitions, 170 flow [2024-11-22 18:00:14,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:14,518 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:14,519 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:14,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 18:00:14,519 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-11-22 18:00:14,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:14,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1393150298, now seen corresponding path program 1 times [2024-11-22 18:00:14,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:14,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597886496] [2024-11-22 18:00:14,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:14,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:14,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:14,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:14,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597886496] [2024-11-22 18:00:14,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597886496] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:00:14,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:00:14,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 18:00:14,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039783995] [2024-11-22 18:00:14,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:00:14,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 18:00:14,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:14,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 18:00:14,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:00:14,882 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 83 [2024-11-22 18:00:14,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 72 transitions, 170 flow. Second operand has 6 states, 6 states have (on average 51.666666666666664) internal successors, (310), 6 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:14,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:14,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 83 [2024-11-22 18:00:14,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 18:00:14,979 INFO L124 PetriNetUnfolderBase]: 77/403 cut-off events. [2024-11-22 18:00:14,979 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-11-22 18:00:14,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 628 conditions, 403 events. 77/403 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2009 event pairs, 12 based on Foata normal form. 0/373 useless extension candidates. Maximal degree in co-relation 621. Up to 122 conditions per place. [2024-11-22 18:00:14,982 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 25 selfloop transitions, 6 changer transitions 2/79 dead transitions. [2024-11-22 18:00:14,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 79 transitions, 248 flow [2024-11-22 18:00:14,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 18:00:14,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 18:00:14,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 332 transitions. [2024-11-22 18:00:14,984 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-22 18:00:14,984 INFO L175 Difference]: Start difference. First operand has 81 places, 72 transitions, 170 flow. Second operand 6 states and 332 transitions. [2024-11-22 18:00:14,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 79 transitions, 248 flow [2024-11-22 18:00:14,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 79 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 18:00:14,986 INFO L231 Difference]: Finished difference. Result has 81 places, 69 transitions, 174 flow [2024-11-22 18:00:14,987 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=174, PETRI_PLACES=81, PETRI_TRANSITIONS=69} [2024-11-22 18:00:14,987 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, -1 predicate places. [2024-11-22 18:00:14,987 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 69 transitions, 174 flow [2024-11-22 18:00:14,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.666666666666664) internal successors, (310), 6 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:14,988 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:14,988 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:14,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 18:00:14,988 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-11-22 18:00:14,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:14,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1549695339, now seen corresponding path program 1 times [2024-11-22 18:00:14,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:14,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243655944] [2024-11-22 18:00:14,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:14,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:15,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:15,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:15,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:15,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243655944] [2024-11-22 18:00:15,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243655944] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:00:15,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166013723] [2024-11-22 18:00:15,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:15,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:00:15,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:00:15,051 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:00:15,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 18:00:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:15,132 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 18:00:15,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:00:15,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:00:15,142 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 18:00:15,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166013723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:00:15,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 18:00:15,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-22 18:00:15,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366588763] [2024-11-22 18:00:15,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:00:15,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:00:15,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:15,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:00:15,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:00:15,146 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 83 [2024-11-22 18:00:15,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 69 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:15,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:15,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 83 [2024-11-22 18:00:15,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 18:00:15,200 INFO L124 PetriNetUnfolderBase]: 23/360 cut-off events. [2024-11-22 18:00:15,200 INFO L125 PetriNetUnfolderBase]: For 55/65 co-relation queries the response was YES. [2024-11-22 18:00:15,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 360 events. 23/360 cut-off events. For 55/65 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1717 event pairs, 6 based on Foata normal form. 3/321 useless extension candidates. Maximal degree in co-relation 462. Up to 41 conditions per place. [2024-11-22 18:00:15,202 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 11 selfloop transitions, 4 changer transitions 0/74 dead transitions. [2024-11-22 18:00:15,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 74 transitions, 220 flow [2024-11-22 18:00:15,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:00:15,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 18:00:15,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 211 transitions. [2024-11-22 18:00:15,205 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8473895582329317 [2024-11-22 18:00:15,205 INFO L175 Difference]: Start difference. First operand has 81 places, 69 transitions, 174 flow. Second operand 3 states and 211 transitions. [2024-11-22 18:00:15,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 74 transitions, 220 flow [2024-11-22 18:00:15,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 74 transitions, 208 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-22 18:00:15,207 INFO L231 Difference]: Finished difference. Result has 78 places, 72 transitions, 192 flow [2024-11-22 18:00:15,207 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=78, PETRI_TRANSITIONS=72} [2024-11-22 18:00:15,208 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, -4 predicate places. [2024-11-22 18:00:15,208 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 72 transitions, 192 flow [2024-11-22 18:00:15,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:15,208 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:15,209 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:15,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 18:00:15,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:00:15,415 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-11-22 18:00:15,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:15,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1302135797, now seen corresponding path program 1 times [2024-11-22 18:00:15,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:15,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16561812] [2024-11-22 18:00:15,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:15,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:15,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:15,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:15,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:15,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16561812] [2024-11-22 18:00:15,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16561812] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:00:15,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270157535] [2024-11-22 18:00:15,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:15,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:00:15,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:00:15,478 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:00:15,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 18:00:15,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:15,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 18:00:15,550 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:00:15,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:15,601 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:00:15,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:15,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270157535] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:00:15,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:00:15,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-22 18:00:15,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974891090] [2024-11-22 18:00:15,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:00:15,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 18:00:15,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:15,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 18:00:15,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-22 18:00:15,753 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 83 [2024-11-22 18:00:15,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 72 transitions, 192 flow. Second operand has 10 states, 10 states have (on average 61.3) internal successors, (613), 10 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:15,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:15,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 83 [2024-11-22 18:00:15,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 18:00:15,833 INFO L124 PetriNetUnfolderBase]: 22/149 cut-off events. [2024-11-22 18:00:15,833 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-11-22 18:00:15,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 149 events. 22/149 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 388 event pairs, 0 based on Foata normal form. 6/155 useless extension candidates. Maximal degree in co-relation 245. Up to 26 conditions per place. [2024-11-22 18:00:15,834 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 18 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2024-11-22 18:00:15,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 55 transitions, 198 flow [2024-11-22 18:00:15,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 18:00:15,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 18:00:15,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 558 transitions. [2024-11-22 18:00:15,838 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7469879518072289 [2024-11-22 18:00:15,838 INFO L175 Difference]: Start difference. First operand has 78 places, 72 transitions, 192 flow. Second operand 9 states and 558 transitions. [2024-11-22 18:00:15,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 55 transitions, 198 flow [2024-11-22 18:00:15,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 55 transitions, 198 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 18:00:15,840 INFO L231 Difference]: Finished difference. Result has 59 places, 44 transitions, 122 flow [2024-11-22 18:00:15,840 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=122, PETRI_PLACES=59, PETRI_TRANSITIONS=44} [2024-11-22 18:00:15,841 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, -23 predicate places. [2024-11-22 18:00:15,841 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 44 transitions, 122 flow [2024-11-22 18:00:15,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 61.3) internal successors, (613), 10 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:15,842 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:15,842 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:15,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 18:00:16,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:00:16,044 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-11-22 18:00:16,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:16,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1277331358, now seen corresponding path program 1 times [2024-11-22 18:00:16,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:16,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25000547] [2024-11-22 18:00:16,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:16,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:16,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 18:00:16,076 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 18:00:16,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 18:00:16,102 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 18:00:16,104 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 18:00:16,107 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2024-11-22 18:00:16,107 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 8 remaining) [2024-11-22 18:00:16,107 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (5 of 8 remaining) [2024-11-22 18:00:16,107 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (4 of 8 remaining) [2024-11-22 18:00:16,107 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (3 of 8 remaining) [2024-11-22 18:00:16,108 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 8 remaining) [2024-11-22 18:00:16,108 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 8 remaining) [2024-11-22 18:00:16,108 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 8 remaining) [2024-11-22 18:00:16,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 18:00:16,108 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-22 18:00:16,109 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 18:00:16,109 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-22 18:00:16,127 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-22 18:00:16,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 91 transitions, 209 flow [2024-11-22 18:00:16,157 INFO L124 PetriNetUnfolderBase]: 28/328 cut-off events. [2024-11-22 18:00:16,157 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-22 18:00:16,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 328 events. 28/328 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 872 event pairs, 1 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 208. Up to 16 conditions per place. [2024-11-22 18:00:16,158 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 91 transitions, 209 flow [2024-11-22 18:00:16,160 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 91 transitions, 209 flow [2024-11-22 18:00:16,161 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 18:00:16,163 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@3fc1f1e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 18:00:16,163 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-22 18:00:16,164 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 18:00:16,164 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2024-11-22 18:00:16,165 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 18:00:16,165 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:16,165 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:16,165 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-22 18:00:16,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:16,165 INFO L85 PathProgramCache]: Analyzing trace with hash -150921205, now seen corresponding path program 1 times [2024-11-22 18:00:16,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:16,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716096763] [2024-11-22 18:00:16,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:16,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:16,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:16,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:16,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716096763] [2024-11-22 18:00:16,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716096763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:00:16,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:00:16,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 18:00:16,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410733361] [2024-11-22 18:00:16,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:00:16,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 18:00:16,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:16,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 18:00:16,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 18:00:16,185 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 91 [2024-11-22 18:00:16,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 91 transitions, 209 flow. Second operand has 2 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:16,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:16,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 91 [2024-11-22 18:00:16,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 18:00:16,255 INFO L124 PetriNetUnfolderBase]: 36/492 cut-off events. [2024-11-22 18:00:16,255 INFO L125 PetriNetUnfolderBase]: For 130/185 co-relation queries the response was YES. [2024-11-22 18:00:16,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 615 conditions, 492 events. 36/492 cut-off events. For 130/185 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2098 event pairs, 27 based on Foata normal form. 39/471 useless extension candidates. Maximal degree in co-relation 303. Up to 68 conditions per place. [2024-11-22 18:00:16,259 INFO L140 encePairwiseOnDemand]: 83/91 looper letters, 10 selfloop transitions, 0 changer transitions 0/81 dead transitions. [2024-11-22 18:00:16,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 81 transitions, 209 flow [2024-11-22 18:00:16,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 18:00:16,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-22 18:00:16,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 162 transitions. [2024-11-22 18:00:16,260 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8901098901098901 [2024-11-22 18:00:16,260 INFO L175 Difference]: Start difference. First operand has 91 places, 91 transitions, 209 flow. Second operand 2 states and 162 transitions. [2024-11-22 18:00:16,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 81 transitions, 209 flow [2024-11-22 18:00:16,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 81 transitions, 209 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 18:00:16,263 INFO L231 Difference]: Finished difference. Result has 86 places, 81 transitions, 189 flow [2024-11-22 18:00:16,263 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=189, PETRI_PLACES=86, PETRI_TRANSITIONS=81} [2024-11-22 18:00:16,265 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -5 predicate places. [2024-11-22 18:00:16,265 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 81 transitions, 189 flow [2024-11-22 18:00:16,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:16,265 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:16,265 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:16,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 18:00:16,265 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-22 18:00:16,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:16,266 INFO L85 PathProgramCache]: Analyzing trace with hash 96712397, now seen corresponding path program 1 times [2024-11-22 18:00:16,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:16,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607038585] [2024-11-22 18:00:16,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:16,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:16,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:16,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:16,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:16,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607038585] [2024-11-22 18:00:16,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607038585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:00:16,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:00:16,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 18:00:16,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910065192] [2024-11-22 18:00:16,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:00:16,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:00:16,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:16,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:00:16,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:00:16,313 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 91 [2024-11-22 18:00:16,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 81 transitions, 189 flow. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:16,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:16,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 91 [2024-11-22 18:00:16,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 18:00:16,420 INFO L124 PetriNetUnfolderBase]: 117/1024 cut-off events. [2024-11-22 18:00:16,420 INFO L125 PetriNetUnfolderBase]: For 133/133 co-relation queries the response was YES. [2024-11-22 18:00:16,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1297 conditions, 1024 events. 117/1024 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 6565 event pairs, 104 based on Foata normal form. 1/925 useless extension candidates. Maximal degree in co-relation 1291. Up to 214 conditions per place. [2024-11-22 18:00:16,426 INFO L140 encePairwiseOnDemand]: 88/91 looper letters, 15 selfloop transitions, 2 changer transitions 3/83 dead transitions. [2024-11-22 18:00:16,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 83 transitions, 229 flow [2024-11-22 18:00:16,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:00:16,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 18:00:16,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2024-11-22 18:00:16,427 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7948717948717948 [2024-11-22 18:00:16,427 INFO L175 Difference]: Start difference. First operand has 86 places, 81 transitions, 189 flow. Second operand 3 states and 217 transitions. [2024-11-22 18:00:16,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 83 transitions, 229 flow [2024-11-22 18:00:16,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 83 transitions, 229 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 18:00:16,429 INFO L231 Difference]: Finished difference. Result has 89 places, 79 transitions, 195 flow [2024-11-22 18:00:16,429 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=195, PETRI_PLACES=89, PETRI_TRANSITIONS=79} [2024-11-22 18:00:16,430 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -2 predicate places. [2024-11-22 18:00:16,430 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 79 transitions, 195 flow [2024-11-22 18:00:16,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:16,430 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:16,430 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:16,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 18:00:16,431 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-22 18:00:16,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:16,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1344078133, now seen corresponding path program 1 times [2024-11-22 18:00:16,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:16,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259503813] [2024-11-22 18:00:16,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:16,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:16,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:16,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:16,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259503813] [2024-11-22 18:00:16,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259503813] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:00:16,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:00:16,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 18:00:16,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693438511] [2024-11-22 18:00:16,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:00:16,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 18:00:16,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:16,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 18:00:16,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:00:16,727 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 91 [2024-11-22 18:00:16,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 79 transitions, 195 flow. Second operand has 6 states, 6 states have (on average 55.666666666666664) internal successors, (334), 6 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:16,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:16,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 91 [2024-11-22 18:00:16,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 18:00:16,869 INFO L124 PetriNetUnfolderBase]: 314/1091 cut-off events. [2024-11-22 18:00:16,869 INFO L125 PetriNetUnfolderBase]: For 134/134 co-relation queries the response was YES. [2024-11-22 18:00:16,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1772 conditions, 1091 events. 314/1091 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 6431 event pairs, 196 based on Foata normal form. 0/1022 useless extension candidates. Maximal degree in co-relation 1764. Up to 419 conditions per place. [2024-11-22 18:00:16,876 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 32 selfloop transitions, 6 changer transitions 2/90 dead transitions. [2024-11-22 18:00:16,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 90 transitions, 295 flow [2024-11-22 18:00:16,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 18:00:16,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 18:00:16,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 363 transitions. [2024-11-22 18:00:16,878 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6648351648351648 [2024-11-22 18:00:16,878 INFO L175 Difference]: Start difference. First operand has 89 places, 79 transitions, 195 flow. Second operand 6 states and 363 transitions. [2024-11-22 18:00:16,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 90 transitions, 295 flow [2024-11-22 18:00:16,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 90 transitions, 293 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 18:00:16,880 INFO L231 Difference]: Finished difference. Result has 89 places, 76 transitions, 199 flow [2024-11-22 18:00:16,880 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=199, PETRI_PLACES=89, PETRI_TRANSITIONS=76} [2024-11-22 18:00:16,881 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -2 predicate places. [2024-11-22 18:00:16,881 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 76 transitions, 199 flow [2024-11-22 18:00:16,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 55.666666666666664) internal successors, (334), 6 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:16,881 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:16,881 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:16,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 18:00:16,881 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-22 18:00:16,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:16,882 INFO L85 PathProgramCache]: Analyzing trace with hash 850910762, now seen corresponding path program 1 times [2024-11-22 18:00:16,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:16,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905990761] [2024-11-22 18:00:16,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:16,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:16,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:16,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:16,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905990761] [2024-11-22 18:00:16,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905990761] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:00:16,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615337055] [2024-11-22 18:00:16,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:16,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:00:16,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:00:16,936 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:00:16,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 18:00:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:17,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 18:00:17,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:00:17,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:00:17,016 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 18:00:17,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615337055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:00:17,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 18:00:17,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-22 18:00:17,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501316519] [2024-11-22 18:00:17,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:00:17,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:00:17,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:17,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:00:17,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:00:17,019 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 91 [2024-11-22 18:00:17,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 76 transitions, 199 flow. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:17,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:17,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 91 [2024-11-22 18:00:17,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 18:00:17,140 INFO L124 PetriNetUnfolderBase]: 123/1035 cut-off events. [2024-11-22 18:00:17,140 INFO L125 PetriNetUnfolderBase]: For 228/285 co-relation queries the response was YES. [2024-11-22 18:00:17,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1383 conditions, 1035 events. 123/1035 cut-off events. For 228/285 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 6894 event pairs, 40 based on Foata normal form. 6/913 useless extension candidates. Maximal degree in co-relation 1375. Up to 166 conditions per place. [2024-11-22 18:00:17,145 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 15 selfloop transitions, 5 changer transitions 0/83 dead transitions. [2024-11-22 18:00:17,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 83 transitions, 262 flow [2024-11-22 18:00:17,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:00:17,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 18:00:17,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 228 transitions. [2024-11-22 18:00:17,146 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8351648351648352 [2024-11-22 18:00:17,146 INFO L175 Difference]: Start difference. First operand has 89 places, 76 transitions, 199 flow. Second operand 3 states and 228 transitions. [2024-11-22 18:00:17,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 83 transitions, 262 flow [2024-11-22 18:00:17,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 83 transitions, 250 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-22 18:00:17,148 INFO L231 Difference]: Finished difference. Result has 86 places, 80 transitions, 225 flow [2024-11-22 18:00:17,148 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=225, PETRI_PLACES=86, PETRI_TRANSITIONS=80} [2024-11-22 18:00:17,149 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -5 predicate places. [2024-11-22 18:00:17,149 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 80 transitions, 225 flow [2024-11-22 18:00:17,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:17,149 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:17,149 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:17,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-22 18:00:17,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-22 18:00:17,350 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-22 18:00:17,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:17,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1376052293, now seen corresponding path program 1 times [2024-11-22 18:00:17,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:17,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913539780] [2024-11-22 18:00:17,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:17,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:17,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:17,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:17,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:17,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913539780] [2024-11-22 18:00:17,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913539780] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:00:17,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251562786] [2024-11-22 18:00:17,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:17,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:00:17,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:00:17,414 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:00:17,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 18:00:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:17,486 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 18:00:17,487 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:00:17,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:17,523 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:00:17,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:17,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251562786] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:00:17,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:00:17,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-22 18:00:17,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450006816] [2024-11-22 18:00:17,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:00:17,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 18:00:17,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:17,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 18:00:17,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-22 18:00:17,653 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 91 [2024-11-22 18:00:17,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 80 transitions, 225 flow. Second operand has 10 states, 10 states have (on average 65.3) internal successors, (653), 10 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:17,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:17,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 91 [2024-11-22 18:00:17,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 18:00:17,840 INFO L124 PetriNetUnfolderBase]: 192/1204 cut-off events. [2024-11-22 18:00:17,840 INFO L125 PetriNetUnfolderBase]: For 463/486 co-relation queries the response was YES. [2024-11-22 18:00:17,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1915 conditions, 1204 events. 192/1204 cut-off events. For 463/486 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 7863 event pairs, 30 based on Foata normal form. 6/1111 useless extension candidates. Maximal degree in co-relation 1906. Up to 218 conditions per place. [2024-11-22 18:00:17,848 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 33 selfloop transitions, 9 changer transitions 0/100 dead transitions. [2024-11-22 18:00:17,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 100 transitions, 375 flow [2024-11-22 18:00:17,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 18:00:17,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 18:00:17,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 608 transitions. [2024-11-22 18:00:17,850 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7423687423687424 [2024-11-22 18:00:17,851 INFO L175 Difference]: Start difference. First operand has 86 places, 80 transitions, 225 flow. Second operand 9 states and 608 transitions. [2024-11-22 18:00:17,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 100 transitions, 375 flow [2024-11-22 18:00:17,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 100 transitions, 365 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 18:00:17,853 INFO L231 Difference]: Finished difference. Result has 95 places, 86 transitions, 265 flow [2024-11-22 18:00:17,853 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=265, PETRI_PLACES=95, PETRI_TRANSITIONS=86} [2024-11-22 18:00:17,854 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 4 predicate places. [2024-11-22 18:00:17,854 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 86 transitions, 265 flow [2024-11-22 18:00:17,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.3) internal successors, (653), 10 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:17,854 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:17,855 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:17,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-22 18:00:18,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-22 18:00:18,055 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-22 18:00:18,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:18,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1423037198, now seen corresponding path program 1 times [2024-11-22 18:00:18,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:18,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832076735] [2024-11-22 18:00:18,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:18,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:18,221 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:18,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:18,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832076735] [2024-11-22 18:00:18,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832076735] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:00:18,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263274754] [2024-11-22 18:00:18,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:18,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:00:18,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:00:18,224 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:00:18,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 18:00:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:18,326 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 18:00:18,328 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:00:18,416 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:18,416 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:00:18,548 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:18,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263274754] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:00:18,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:00:18,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-11-22 18:00:18,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165791439] [2024-11-22 18:00:18,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:00:18,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 18:00:18,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:18,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 18:00:18,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-22 18:00:18,673 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 91 [2024-11-22 18:00:18,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 86 transitions, 265 flow. Second operand has 18 states, 18 states have (on average 65.38888888888889) internal successors, (1177), 18 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:18,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:18,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 91 [2024-11-22 18:00:18,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 18:00:18,801 INFO L124 PetriNetUnfolderBase]: 78/359 cut-off events. [2024-11-22 18:00:18,801 INFO L125 PetriNetUnfolderBase]: For 202/202 co-relation queries the response was YES. [2024-11-22 18:00:18,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725 conditions, 359 events. 78/359 cut-off events. For 202/202 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1496 event pairs, 0 based on Foata normal form. 8/367 useless extension candidates. Maximal degree in co-relation 714. Up to 86 conditions per place. [2024-11-22 18:00:18,804 INFO L140 encePairwiseOnDemand]: 86/91 looper letters, 30 selfloop transitions, 10 changer transitions 0/74 dead transitions. [2024-11-22 18:00:18,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 74 transitions, 332 flow [2024-11-22 18:00:18,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 18:00:18,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-22 18:00:18,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 797 transitions. [2024-11-22 18:00:18,807 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7298534798534798 [2024-11-22 18:00:18,807 INFO L175 Difference]: Start difference. First operand has 95 places, 86 transitions, 265 flow. Second operand 12 states and 797 transitions. [2024-11-22 18:00:18,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 74 transitions, 332 flow [2024-11-22 18:00:18,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 74 transitions, 317 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-22 18:00:18,809 INFO L231 Difference]: Finished difference. Result has 76 places, 54 transitions, 177 flow [2024-11-22 18:00:18,809 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=177, PETRI_PLACES=76, PETRI_TRANSITIONS=54} [2024-11-22 18:00:18,810 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -15 predicate places. [2024-11-22 18:00:18,810 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 54 transitions, 177 flow [2024-11-22 18:00:18,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 65.38888888888889) internal successors, (1177), 18 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:18,811 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:18,811 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:18,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 18:00:19,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:00:19,016 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-22 18:00:19,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:19,016 INFO L85 PathProgramCache]: Analyzing trace with hash 274865753, now seen corresponding path program 1 times [2024-11-22 18:00:19,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:19,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262821979] [2024-11-22 18:00:19,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:19,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 18:00:19,039 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 18:00:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 18:00:19,066 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 18:00:19,066 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 18:00:19,066 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2024-11-22 18:00:19,067 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2024-11-22 18:00:19,067 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2024-11-22 18:00:19,067 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2024-11-22 18:00:19,067 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2024-11-22 18:00:19,067 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2024-11-22 18:00:19,067 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2024-11-22 18:00:19,067 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2024-11-22 18:00:19,067 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2024-11-22 18:00:19,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 18:00:19,067 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:19,068 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 18:00:19,068 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-22 18:00:19,086 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-22 18:00:19,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 99 transitions, 238 flow [2024-11-22 18:00:19,126 INFO L124 PetriNetUnfolderBase]: 52/552 cut-off events. [2024-11-22 18:00:19,127 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-11-22 18:00:19,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 603 conditions, 552 events. 52/552 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1935 event pairs, 6 based on Foata normal form. 0/469 useless extension candidates. Maximal degree in co-relation 348. Up to 32 conditions per place. [2024-11-22 18:00:19,128 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 99 transitions, 238 flow [2024-11-22 18:00:19,131 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 99 transitions, 238 flow [2024-11-22 18:00:19,132 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 18:00:19,132 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@3fc1f1e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 18:00:19,132 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-22 18:00:19,133 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 18:00:19,133 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2024-11-22 18:00:19,133 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 18:00:19,133 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:19,133 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:19,134 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-11-22 18:00:19,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:19,134 INFO L85 PathProgramCache]: Analyzing trace with hash 958529195, now seen corresponding path program 1 times [2024-11-22 18:00:19,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:19,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911722097] [2024-11-22 18:00:19,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:19,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:19,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:19,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:19,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911722097] [2024-11-22 18:00:19,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911722097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:00:19,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:00:19,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 18:00:19,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940754435] [2024-11-22 18:00:19,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:00:19,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 18:00:19,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:19,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 18:00:19,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 18:00:19,144 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 99 [2024-11-22 18:00:19,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 99 transitions, 238 flow. Second operand has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:19,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:19,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 99 [2024-11-22 18:00:19,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 18:00:19,276 INFO L124 PetriNetUnfolderBase]: 157/1308 cut-off events. [2024-11-22 18:00:19,276 INFO L125 PetriNetUnfolderBase]: For 484/769 co-relation queries the response was YES. [2024-11-22 18:00:19,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1735 conditions, 1308 events. 157/1308 cut-off events. For 484/769 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 8586 event pairs, 128 based on Foata normal form. 105/1248 useless extension candidates. Maximal degree in co-relation 947. Up to 250 conditions per place. [2024-11-22 18:00:19,283 INFO L140 encePairwiseOnDemand]: 90/99 looper letters, 13 selfloop transitions, 0 changer transitions 0/88 dead transitions. [2024-11-22 18:00:19,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 88 transitions, 242 flow [2024-11-22 18:00:19,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 18:00:19,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-22 18:00:19,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 174 transitions. [2024-11-22 18:00:19,284 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8787878787878788 [2024-11-22 18:00:19,284 INFO L175 Difference]: Start difference. First operand has 100 places, 99 transitions, 238 flow. Second operand 2 states and 174 transitions. [2024-11-22 18:00:19,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 88 transitions, 242 flow [2024-11-22 18:00:19,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 88 transitions, 242 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 18:00:19,286 INFO L231 Difference]: Finished difference. Result has 94 places, 88 transitions, 216 flow [2024-11-22 18:00:19,286 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=216, PETRI_PLACES=94, PETRI_TRANSITIONS=88} [2024-11-22 18:00:19,287 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -6 predicate places. [2024-11-22 18:00:19,287 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 88 transitions, 216 flow [2024-11-22 18:00:19,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:19,287 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:19,287 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:19,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-22 18:00:19,288 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-11-22 18:00:19,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:19,288 INFO L85 PathProgramCache]: Analyzing trace with hash 36082640, now seen corresponding path program 1 times [2024-11-22 18:00:19,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:19,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923673550] [2024-11-22 18:00:19,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:19,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:19,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:19,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:19,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923673550] [2024-11-22 18:00:19,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923673550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:00:19,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:00:19,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 18:00:19,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711529926] [2024-11-22 18:00:19,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:00:19,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:00:19,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:19,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:00:19,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:00:19,326 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 99 [2024-11-22 18:00:19,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 88 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:19,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:19,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 99 [2024-11-22 18:00:19,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 18:00:19,603 INFO L124 PetriNetUnfolderBase]: 422/2882 cut-off events. [2024-11-22 18:00:19,604 INFO L125 PetriNetUnfolderBase]: For 531/531 co-relation queries the response was YES. [2024-11-22 18:00:19,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3738 conditions, 2882 events. 422/2882 cut-off events. For 531/531 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 23758 event pairs, 278 based on Foata normal form. 1/2616 useless extension candidates. Maximal degree in co-relation 3731. Up to 675 conditions per place. [2024-11-22 18:00:19,617 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 18 selfloop transitions, 2 changer transitions 3/90 dead transitions. [2024-11-22 18:00:19,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 90 transitions, 262 flow [2024-11-22 18:00:19,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:00:19,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 18:00:19,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 232 transitions. [2024-11-22 18:00:19,618 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7811447811447811 [2024-11-22 18:00:19,618 INFO L175 Difference]: Start difference. First operand has 94 places, 88 transitions, 216 flow. Second operand 3 states and 232 transitions. [2024-11-22 18:00:19,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 90 transitions, 262 flow [2024-11-22 18:00:19,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 90 transitions, 262 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 18:00:19,620 INFO L231 Difference]: Finished difference. Result has 97 places, 86 transitions, 222 flow [2024-11-22 18:00:19,621 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=97, PETRI_TRANSITIONS=86} [2024-11-22 18:00:19,621 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -3 predicate places. [2024-11-22 18:00:19,621 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 86 transitions, 222 flow [2024-11-22 18:00:19,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:19,621 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:19,621 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:19,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-22 18:00:19,622 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-11-22 18:00:19,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:19,622 INFO L85 PathProgramCache]: Analyzing trace with hash 157953304, now seen corresponding path program 1 times [2024-11-22 18:00:19,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:19,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425813803] [2024-11-22 18:00:19,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:19,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:19,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:19,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:19,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425813803] [2024-11-22 18:00:19,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425813803] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:00:19,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:00:19,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 18:00:19,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50171546] [2024-11-22 18:00:19,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:00:19,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 18:00:19,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:19,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 18:00:19,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:00:19,864 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 99 [2024-11-22 18:00:19,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 86 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 59.666666666666664) internal successors, (358), 6 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:19,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:19,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 99 [2024-11-22 18:00:19,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 18:00:20,212 INFO L124 PetriNetUnfolderBase]: 1099/3285 cut-off events. [2024-11-22 18:00:20,213 INFO L125 PetriNetUnfolderBase]: For 513/513 co-relation queries the response was YES. [2024-11-22 18:00:20,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5364 conditions, 3285 events. 1099/3285 cut-off events. For 513/513 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 24274 event pairs, 150 based on Foata normal form. 0/3063 useless extension candidates. Maximal degree in co-relation 5355. Up to 1372 conditions per place. [2024-11-22 18:00:20,240 INFO L140 encePairwiseOnDemand]: 93/99 looper letters, 39 selfloop transitions, 6 changer transitions 2/101 dead transitions. [2024-11-22 18:00:20,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 101 transitions, 344 flow [2024-11-22 18:00:20,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 18:00:20,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 18:00:20,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 394 transitions. [2024-11-22 18:00:20,243 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6632996632996633 [2024-11-22 18:00:20,243 INFO L175 Difference]: Start difference. First operand has 97 places, 86 transitions, 222 flow. Second operand 6 states and 394 transitions. [2024-11-22 18:00:20,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 101 transitions, 344 flow [2024-11-22 18:00:20,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 101 transitions, 342 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 18:00:20,245 INFO L231 Difference]: Finished difference. Result has 97 places, 83 transitions, 226 flow [2024-11-22 18:00:20,246 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=226, PETRI_PLACES=97, PETRI_TRANSITIONS=83} [2024-11-22 18:00:20,246 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -3 predicate places. [2024-11-22 18:00:20,246 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 83 transitions, 226 flow [2024-11-22 18:00:20,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 59.666666666666664) internal successors, (358), 6 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:20,247 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:20,247 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:20,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-22 18:00:20,247 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-11-22 18:00:20,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:20,248 INFO L85 PathProgramCache]: Analyzing trace with hash 89007559, now seen corresponding path program 1 times [2024-11-22 18:00:20,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:20,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345932040] [2024-11-22 18:00:20,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:20,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:20,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:20,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:20,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:20,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345932040] [2024-11-22 18:00:20,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345932040] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:00:20,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240337766] [2024-11-22 18:00:20,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:20,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:00:20,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:00:20,304 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:00:20,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 18:00:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:20,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 18:00:20,385 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:00:20,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:00:20,391 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 18:00:20,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240337766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:00:20,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 18:00:20,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-22 18:00:20,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316985473] [2024-11-22 18:00:20,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:00:20,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:00:20,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:20,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:00:20,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:00:20,395 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 99 [2024-11-22 18:00:20,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 83 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:20,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:20,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 99 [2024-11-22 18:00:20,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 18:00:20,737 INFO L124 PetriNetUnfolderBase]: 492/3013 cut-off events. [2024-11-22 18:00:20,737 INFO L125 PetriNetUnfolderBase]: For 883/1117 co-relation queries the response was YES. [2024-11-22 18:00:20,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4129 conditions, 3013 events. 492/3013 cut-off events. For 883/1117 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 25680 event pairs, 183 based on Foata normal form. 10/2653 useless extension candidates. Maximal degree in co-relation 4120. Up to 584 conditions per place. [2024-11-22 18:00:20,768 INFO L140 encePairwiseOnDemand]: 92/99 looper letters, 19 selfloop transitions, 6 changer transitions 0/92 dead transitions. [2024-11-22 18:00:20,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 92 transitions, 306 flow [2024-11-22 18:00:20,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:00:20,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 18:00:20,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2024-11-22 18:00:20,770 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8249158249158249 [2024-11-22 18:00:20,770 INFO L175 Difference]: Start difference. First operand has 97 places, 83 transitions, 226 flow. Second operand 3 states and 245 transitions. [2024-11-22 18:00:20,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 92 transitions, 306 flow [2024-11-22 18:00:20,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 92 transitions, 294 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-22 18:00:20,773 INFO L231 Difference]: Finished difference. Result has 94 places, 88 transitions, 260 flow [2024-11-22 18:00:20,773 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=94, PETRI_TRANSITIONS=88} [2024-11-22 18:00:20,774 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -6 predicate places. [2024-11-22 18:00:20,774 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 88 transitions, 260 flow [2024-11-22 18:00:20,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:20,774 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:20,774 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:20,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-22 18:00:20,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-22 18:00:20,976 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-11-22 18:00:20,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:20,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1631746833, now seen corresponding path program 1 times [2024-11-22 18:00:20,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:20,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022089092] [2024-11-22 18:00:20,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:20,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:20,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:21,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:21,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:21,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022089092] [2024-11-22 18:00:21,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022089092] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:00:21,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291095930] [2024-11-22 18:00:21,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:21,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:00:21,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:00:21,039 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:00:21,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 18:00:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:21,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 18:00:21,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:00:21,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:21,160 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:00:21,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:21,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291095930] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:00:21,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:00:21,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-22 18:00:21,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636169827] [2024-11-22 18:00:21,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:00:21,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 18:00:21,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:21,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 18:00:21,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-22 18:00:21,283 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 99 [2024-11-22 18:00:21,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 88 transitions, 260 flow. Second operand has 10 states, 10 states have (on average 69.3) internal successors, (693), 10 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:21,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:21,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 99 [2024-11-22 18:00:21,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 18:00:21,771 INFO L124 PetriNetUnfolderBase]: 753/3511 cut-off events. [2024-11-22 18:00:21,771 INFO L125 PetriNetUnfolderBase]: For 1787/1886 co-relation queries the response was YES. [2024-11-22 18:00:21,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5953 conditions, 3511 events. 753/3511 cut-off events. For 1787/1886 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 30257 event pairs, 127 based on Foata normal form. 6/3210 useless extension candidates. Maximal degree in co-relation 5943. Up to 854 conditions per place. [2024-11-22 18:00:21,812 INFO L140 encePairwiseOnDemand]: 93/99 looper letters, 38 selfloop transitions, 9 changer transitions 0/109 dead transitions. [2024-11-22 18:00:21,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 109 transitions, 424 flow [2024-11-22 18:00:21,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 18:00:21,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 18:00:21,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 648 transitions. [2024-11-22 18:00:21,815 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2024-11-22 18:00:21,815 INFO L175 Difference]: Start difference. First operand has 94 places, 88 transitions, 260 flow. Second operand 9 states and 648 transitions. [2024-11-22 18:00:21,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 109 transitions, 424 flow [2024-11-22 18:00:21,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 109 transitions, 412 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 18:00:21,820 INFO L231 Difference]: Finished difference. Result has 103 places, 94 transitions, 298 flow [2024-11-22 18:00:21,820 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=298, PETRI_PLACES=103, PETRI_TRANSITIONS=94} [2024-11-22 18:00:21,821 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 3 predicate places. [2024-11-22 18:00:21,821 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 94 transitions, 298 flow [2024-11-22 18:00:21,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 69.3) internal successors, (693), 10 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:21,822 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:21,822 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:21,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-22 18:00:22,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-22 18:00:22,026 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-11-22 18:00:22,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:22,027 INFO L85 PathProgramCache]: Analyzing trace with hash 46783590, now seen corresponding path program 1 times [2024-11-22 18:00:22,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:22,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419360871] [2024-11-22 18:00:22,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:22,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:22,173 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:22,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:22,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419360871] [2024-11-22 18:00:22,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419360871] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:00:22,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626461209] [2024-11-22 18:00:22,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:22,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:00:22,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:00:22,176 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:00:22,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 18:00:22,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:22,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 18:00:22,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:00:22,351 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:22,352 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:00:22,473 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:22,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626461209] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:00:22,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:00:22,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-11-22 18:00:22,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215179666] [2024-11-22 18:00:22,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:00:22,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 18:00:22,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:22,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 18:00:22,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-22 18:00:22,623 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 99 [2024-11-22 18:00:22,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 94 transitions, 298 flow. Second operand has 18 states, 18 states have (on average 69.38888888888889) internal successors, (1249), 18 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:22,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:22,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 99 [2024-11-22 18:00:22,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 18:00:22,824 INFO L124 PetriNetUnfolderBase]: 230/771 cut-off events. [2024-11-22 18:00:22,825 INFO L125 PetriNetUnfolderBase]: For 580/580 co-relation queries the response was YES. [2024-11-22 18:00:22,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1682 conditions, 771 events. 230/771 cut-off events. For 580/580 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 4060 event pairs, 0 based on Foata normal form. 24/795 useless extension candidates. Maximal degree in co-relation 1670. Up to 246 conditions per place. [2024-11-22 18:00:22,830 INFO L140 encePairwiseOnDemand]: 94/99 looper letters, 45 selfloop transitions, 13 changer transitions 0/96 dead transitions. [2024-11-22 18:00:22,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 96 transitions, 462 flow [2024-11-22 18:00:22,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 18:00:22,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-22 18:00:22,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1065 transitions. [2024-11-22 18:00:22,833 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7171717171717171 [2024-11-22 18:00:22,834 INFO L175 Difference]: Start difference. First operand has 103 places, 94 transitions, 298 flow. Second operand 15 states and 1065 transitions. [2024-11-22 18:00:22,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 96 transitions, 462 flow [2024-11-22 18:00:22,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 96 transitions, 439 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-22 18:00:22,837 INFO L231 Difference]: Finished difference. Result has 87 places, 63 transitions, 216 flow [2024-11-22 18:00:22,837 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=216, PETRI_PLACES=87, PETRI_TRANSITIONS=63} [2024-11-22 18:00:22,837 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -13 predicate places. [2024-11-22 18:00:22,838 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 63 transitions, 216 flow [2024-11-22 18:00:22,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 69.38888888888889) internal successors, (1249), 18 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:22,840 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:22,840 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:22,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-22 18:00:23,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-22 18:00:23,041 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-11-22 18:00:23,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:23,041 INFO L85 PathProgramCache]: Analyzing trace with hash 248426653, now seen corresponding path program 1 times [2024-11-22 18:00:23,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:23,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181106177] [2024-11-22 18:00:23,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:23,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 18:00:23,066 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 18:00:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 18:00:23,096 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 18:00:23,096 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 18:00:23,096 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-11-22 18:00:23,096 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2024-11-22 18:00:23,096 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2024-11-22 18:00:23,097 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2024-11-22 18:00:23,097 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2024-11-22 18:00:23,097 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2024-11-22 18:00:23,097 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2024-11-22 18:00:23,097 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2024-11-22 18:00:23,097 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2024-11-22 18:00:23,098 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2024-11-22 18:00:23,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-22 18:00:23,098 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:23,099 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 18:00:23,099 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-22 18:00:23,116 INFO L143 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2024-11-22 18:00:23,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 107 transitions, 269 flow [2024-11-22 18:00:23,192 INFO L124 PetriNetUnfolderBase]: 104/972 cut-off events. [2024-11-22 18:00:23,193 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2024-11-22 18:00:23,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1078 conditions, 972 events. 104/972 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4453 event pairs, 23 based on Foata normal form. 0/834 useless extension candidates. Maximal degree in co-relation 597. Up to 80 conditions per place. [2024-11-22 18:00:23,196 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 107 transitions, 269 flow [2024-11-22 18:00:23,200 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 107 transitions, 269 flow [2024-11-22 18:00:23,201 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 18:00:23,202 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@3fc1f1e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 18:00:23,202 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-22 18:00:23,203 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 18:00:23,203 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2024-11-22 18:00:23,203 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 18:00:23,203 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:23,204 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:23,204 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2024-11-22 18:00:23,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:23,204 INFO L85 PathProgramCache]: Analyzing trace with hash 465675339, now seen corresponding path program 1 times [2024-11-22 18:00:23,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:23,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064437073] [2024-11-22 18:00:23,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:23,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:23,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:23,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:23,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:23,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064437073] [2024-11-22 18:00:23,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064437073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:00:23,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:00:23,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 18:00:23,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957117138] [2024-11-22 18:00:23,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:00:23,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 18:00:23,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:23,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 18:00:23,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 18:00:23,217 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 107 [2024-11-22 18:00:23,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 107 transitions, 269 flow. Second operand has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:23,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:23,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 107 [2024-11-22 18:00:23,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 18:00:23,589 INFO L124 PetriNetUnfolderBase]: 622/3788 cut-off events. [2024-11-22 18:00:23,589 INFO L125 PetriNetUnfolderBase]: For 1634/2940 co-relation queries the response was YES. [2024-11-22 18:00:23,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5251 conditions, 3788 events. 622/3788 cut-off events. For 1634/2940 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 33590 event pairs, 527 based on Foata normal form. 306/3603 useless extension candidates. Maximal degree in co-relation 3055. Up to 892 conditions per place. [2024-11-22 18:00:23,617 INFO L140 encePairwiseOnDemand]: 97/107 looper letters, 16 selfloop transitions, 0 changer transitions 0/95 dead transitions. [2024-11-22 18:00:23,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 95 transitions, 277 flow [2024-11-22 18:00:23,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 18:00:23,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-22 18:00:23,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 186 transitions. [2024-11-22 18:00:23,619 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8691588785046729 [2024-11-22 18:00:23,619 INFO L175 Difference]: Start difference. First operand has 109 places, 107 transitions, 269 flow. Second operand 2 states and 186 transitions. [2024-11-22 18:00:23,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 95 transitions, 277 flow [2024-11-22 18:00:23,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 95 transitions, 277 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 18:00:23,622 INFO L231 Difference]: Finished difference. Result has 102 places, 95 transitions, 245 flow [2024-11-22 18:00:23,622 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=245, PETRI_PLACES=102, PETRI_TRANSITIONS=95} [2024-11-22 18:00:23,622 INFO L277 CegarLoopForPetriNet]: 109 programPoint places, -7 predicate places. [2024-11-22 18:00:23,623 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 95 transitions, 245 flow [2024-11-22 18:00:23,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:23,623 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:23,623 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:23,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-22 18:00:23,623 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2024-11-22 18:00:23,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:23,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1851553829, now seen corresponding path program 1 times [2024-11-22 18:00:23,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:23,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005833837] [2024-11-22 18:00:23,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:23,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:23,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:23,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:23,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:23,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005833837] [2024-11-22 18:00:23,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005833837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:00:23,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:00:23,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 18:00:23,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850391547] [2024-11-22 18:00:23,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:00:23,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:00:23,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:23,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:00:23,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:00:23,661 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 107 [2024-11-22 18:00:23,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 95 transitions, 245 flow. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:23,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:23,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 107 [2024-11-22 18:00:23,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 18:00:24,499 INFO L124 PetriNetUnfolderBase]: 1439/8085 cut-off events. [2024-11-22 18:00:24,499 INFO L125 PetriNetUnfolderBase]: For 1886/1886 co-relation queries the response was YES. [2024-11-22 18:00:24,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10772 conditions, 8085 events. 1439/8085 cut-off events. For 1886/1886 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 81608 event pairs, 1050 based on Foata normal form. 1/7383 useless extension candidates. Maximal degree in co-relation 10764. Up to 2112 conditions per place. [2024-11-22 18:00:24,542 INFO L140 encePairwiseOnDemand]: 104/107 looper letters, 21 selfloop transitions, 2 changer transitions 3/97 dead transitions. [2024-11-22 18:00:24,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 97 transitions, 297 flow [2024-11-22 18:00:24,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:00:24,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 18:00:24,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2024-11-22 18:00:24,543 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7694704049844237 [2024-11-22 18:00:24,544 INFO L175 Difference]: Start difference. First operand has 102 places, 95 transitions, 245 flow. Second operand 3 states and 247 transitions. [2024-11-22 18:00:24,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 97 transitions, 297 flow [2024-11-22 18:00:24,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 97 transitions, 297 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 18:00:24,546 INFO L231 Difference]: Finished difference. Result has 105 places, 93 transitions, 251 flow [2024-11-22 18:00:24,546 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=251, PETRI_PLACES=105, PETRI_TRANSITIONS=93} [2024-11-22 18:00:24,547 INFO L277 CegarLoopForPetriNet]: 109 programPoint places, -4 predicate places. [2024-11-22 18:00:24,547 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 93 transitions, 251 flow [2024-11-22 18:00:24,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:24,547 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:24,547 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:24,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-22 18:00:24,548 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2024-11-22 18:00:24,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:24,548 INFO L85 PathProgramCache]: Analyzing trace with hash 2129743107, now seen corresponding path program 1 times [2024-11-22 18:00:24,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:24,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745121917] [2024-11-22 18:00:24,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:24,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:24,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:24,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:24,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:24,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745121917] [2024-11-22 18:00:24,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745121917] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:00:24,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:00:24,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 18:00:24,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151156203] [2024-11-22 18:00:24,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:00:24,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 18:00:24,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:24,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 18:00:24,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:00:24,833 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 107 [2024-11-22 18:00:24,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 93 transitions, 251 flow. Second operand has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:24,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:24,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 107 [2024-11-22 18:00:24,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 18:00:25,926 INFO L124 PetriNetUnfolderBase]: 3704/9558 cut-off events. [2024-11-22 18:00:25,926 INFO L125 PetriNetUnfolderBase]: For 1820/1820 co-relation queries the response was YES. [2024-11-22 18:00:25,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15928 conditions, 9558 events. 3704/9558 cut-off events. For 1820/1820 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 81162 event pairs, 460 based on Foata normal form. 0/8948 useless extension candidates. Maximal degree in co-relation 15918. Up to 4549 conditions per place. [2024-11-22 18:00:26,025 INFO L140 encePairwiseOnDemand]: 101/107 looper letters, 46 selfloop transitions, 6 changer transitions 2/112 dead transitions. [2024-11-22 18:00:26,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 112 transitions, 395 flow [2024-11-22 18:00:26,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 18:00:26,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 18:00:26,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 425 transitions. [2024-11-22 18:00:26,027 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.661993769470405 [2024-11-22 18:00:26,028 INFO L175 Difference]: Start difference. First operand has 105 places, 93 transitions, 251 flow. Second operand 6 states and 425 transitions. [2024-11-22 18:00:26,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 112 transitions, 395 flow [2024-11-22 18:00:26,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 112 transitions, 393 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 18:00:26,032 INFO L231 Difference]: Finished difference. Result has 105 places, 90 transitions, 255 flow [2024-11-22 18:00:26,033 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=255, PETRI_PLACES=105, PETRI_TRANSITIONS=90} [2024-11-22 18:00:26,033 INFO L277 CegarLoopForPetriNet]: 109 programPoint places, -4 predicate places. [2024-11-22 18:00:26,034 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 90 transitions, 255 flow [2024-11-22 18:00:26,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:26,035 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:26,035 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:26,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-22 18:00:26,035 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2024-11-22 18:00:26,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:26,036 INFO L85 PathProgramCache]: Analyzing trace with hash 459562348, now seen corresponding path program 1 times [2024-11-22 18:00:26,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:26,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545045546] [2024-11-22 18:00:26,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:26,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:26,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:26,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:26,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545045546] [2024-11-22 18:00:26,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545045546] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:00:26,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630405063] [2024-11-22 18:00:26,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:26,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:00:26,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:00:26,099 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:00:26,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 18:00:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:26,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 18:00:26,201 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:00:26,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:00:26,209 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 18:00:26,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630405063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:00:26,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 18:00:26,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-22 18:00:26,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398223295] [2024-11-22 18:00:26,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:00:26,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:00:26,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:26,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:00:26,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:00:26,213 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 107 [2024-11-22 18:00:26,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 90 transitions, 255 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:26,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:26,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 107 [2024-11-22 18:00:26,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 18:00:27,485 INFO L124 PetriNetUnfolderBase]: 1758/8878 cut-off events. [2024-11-22 18:00:27,485 INFO L125 PetriNetUnfolderBase]: For 3119/3912 co-relation queries the response was YES. [2024-11-22 18:00:27,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12455 conditions, 8878 events. 1758/8878 cut-off events. For 3119/3912 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 92637 event pairs, 725 based on Foata normal form. 15/7831 useless extension candidates. Maximal degree in co-relation 12445. Up to 1923 conditions per place. [2024-11-22 18:00:27,535 INFO L140 encePairwiseOnDemand]: 99/107 looper letters, 23 selfloop transitions, 7 changer transitions 0/101 dead transitions. [2024-11-22 18:00:27,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 101 transitions, 352 flow [2024-11-22 18:00:27,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:00:27,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 18:00:27,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2024-11-22 18:00:27,538 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8161993769470405 [2024-11-22 18:00:27,538 INFO L175 Difference]: Start difference. First operand has 105 places, 90 transitions, 255 flow. Second operand 3 states and 262 transitions. [2024-11-22 18:00:27,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 101 transitions, 352 flow [2024-11-22 18:00:27,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 101 transitions, 340 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-22 18:00:27,543 INFO L231 Difference]: Finished difference. Result has 102 places, 96 transitions, 297 flow [2024-11-22 18:00:27,544 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=297, PETRI_PLACES=102, PETRI_TRANSITIONS=96} [2024-11-22 18:00:27,544 INFO L277 CegarLoopForPetriNet]: 109 programPoint places, -7 predicate places. [2024-11-22 18:00:27,545 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 96 transitions, 297 flow [2024-11-22 18:00:27,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:27,545 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:27,545 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:27,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-22 18:00:27,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:00:27,746 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2024-11-22 18:00:27,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:27,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1531530531, now seen corresponding path program 1 times [2024-11-22 18:00:27,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:27,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59576195] [2024-11-22 18:00:27,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:27,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:27,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:27,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:27,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:27,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59576195] [2024-11-22 18:00:27,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59576195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:00:27,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935485483] [2024-11-22 18:00:27,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:27,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:00:27,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:00:27,790 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:00:27,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-22 18:00:27,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:27,879 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 18:00:27,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:00:27,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:27,907 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:00:27,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:27,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935485483] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:00:27,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:00:27,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-22 18:00:27,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678947568] [2024-11-22 18:00:27,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:00:27,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 18:00:27,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:27,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 18:00:27,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-22 18:00:28,004 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 107 [2024-11-22 18:00:28,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 96 transitions, 297 flow. Second operand has 10 states, 10 states have (on average 73.3) internal successors, (733), 10 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:28,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:28,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 107 [2024-11-22 18:00:28,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 18:00:29,131 INFO L124 PetriNetUnfolderBase]: 2499/9970 cut-off events. [2024-11-22 18:00:29,131 INFO L125 PetriNetUnfolderBase]: For 6038/6374 co-relation queries the response was YES. [2024-11-22 18:00:29,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17517 conditions, 9970 events. 2499/9970 cut-off events. For 6038/6374 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 100525 event pairs, 517 based on Foata normal form. 6/9043 useless extension candidates. Maximal degree in co-relation 17506. Up to 2811 conditions per place. [2024-11-22 18:00:29,200 INFO L140 encePairwiseOnDemand]: 101/107 looper letters, 43 selfloop transitions, 9 changer transitions 0/118 dead transitions. [2024-11-22 18:00:29,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 118 transitions, 475 flow [2024-11-22 18:00:29,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 18:00:29,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 18:00:29,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 688 transitions. [2024-11-22 18:00:29,202 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7144340602284528 [2024-11-22 18:00:29,202 INFO L175 Difference]: Start difference. First operand has 102 places, 96 transitions, 297 flow. Second operand 9 states and 688 transitions. [2024-11-22 18:00:29,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 118 transitions, 475 flow [2024-11-22 18:00:29,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 118 transitions, 461 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 18:00:29,210 INFO L231 Difference]: Finished difference. Result has 111 places, 102 transitions, 333 flow [2024-11-22 18:00:29,211 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=333, PETRI_PLACES=111, PETRI_TRANSITIONS=102} [2024-11-22 18:00:29,211 INFO L277 CegarLoopForPetriNet]: 109 programPoint places, 2 predicate places. [2024-11-22 18:00:29,211 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 102 transitions, 333 flow [2024-11-22 18:00:29,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 73.3) internal successors, (733), 10 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:29,212 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:29,212 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:29,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-22 18:00:29,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:00:29,413 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2024-11-22 18:00:29,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:29,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1763992574, now seen corresponding path program 1 times [2024-11-22 18:00:29,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:29,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274458226] [2024-11-22 18:00:29,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:29,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:29,520 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:29,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:29,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274458226] [2024-11-22 18:00:29,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274458226] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:00:29,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445015150] [2024-11-22 18:00:29,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:29,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:00:29,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:00:29,523 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:00:29,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-22 18:00:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:29,630 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 18:00:29,631 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:00:29,696 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:29,696 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:00:29,804 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:29,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445015150] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:00:29,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:00:29,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-11-22 18:00:29,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656637630] [2024-11-22 18:00:29,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:00:29,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 18:00:29,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:29,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 18:00:29,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-22 18:00:29,892 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 107 [2024-11-22 18:00:29,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 102 transitions, 333 flow. Second operand has 18 states, 18 states have (on average 73.38888888888889) internal successors, (1321), 18 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:29,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:29,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 107 [2024-11-22 18:00:29,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 18:00:30,286 INFO L124 PetriNetUnfolderBase]: 614/1679 cut-off events. [2024-11-22 18:00:30,287 INFO L125 PetriNetUnfolderBase]: For 1551/1551 co-relation queries the response was YES. [2024-11-22 18:00:30,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3855 conditions, 1679 events. 614/1679 cut-off events. For 1551/1551 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 10274 event pairs, 0 based on Foata normal form. 56/1735 useless extension candidates. Maximal degree in co-relation 3842. Up to 646 conditions per place. [2024-11-22 18:00:30,296 INFO L140 encePairwiseOnDemand]: 102/107 looper letters, 63 selfloop transitions, 16 changer transitions 0/121 dead transitions. [2024-11-22 18:00:30,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 121 transitions, 612 flow [2024-11-22 18:00:30,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 18:00:30,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-22 18:00:30,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1360 transitions. [2024-11-22 18:00:30,298 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7061266874350987 [2024-11-22 18:00:30,299 INFO L175 Difference]: Start difference. First operand has 111 places, 102 transitions, 333 flow. Second operand 18 states and 1360 transitions. [2024-11-22 18:00:30,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 121 transitions, 612 flow [2024-11-22 18:00:30,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 121 transitions, 579 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-11-22 18:00:30,303 INFO L231 Difference]: Finished difference. Result has 98 places, 72 transitions, 255 flow [2024-11-22 18:00:30,303 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=255, PETRI_PLACES=98, PETRI_TRANSITIONS=72} [2024-11-22 18:00:30,304 INFO L277 CegarLoopForPetriNet]: 109 programPoint places, -11 predicate places. [2024-11-22 18:00:30,304 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 72 transitions, 255 flow [2024-11-22 18:00:30,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 73.38888888888889) internal successors, (1321), 18 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:30,305 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:30,305 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:30,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-22 18:00:30,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-22 18:00:30,506 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2024-11-22 18:00:30,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:30,507 INFO L85 PathProgramCache]: Analyzing trace with hash 939663086, now seen corresponding path program 1 times [2024-11-22 18:00:30,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:30,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523014431] [2024-11-22 18:00:30,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:30,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:30,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 18:00:30,544 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 18:00:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 18:00:30,577 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 18:00:30,577 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 18:00:30,577 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2024-11-22 18:00:30,578 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2024-11-22 18:00:30,578 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2024-11-22 18:00:30,578 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2024-11-22 18:00:30,578 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2024-11-22 18:00:30,578 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2024-11-22 18:00:30,578 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2024-11-22 18:00:30,579 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2024-11-22 18:00:30,579 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2024-11-22 18:00:30,579 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2024-11-22 18:00:30,579 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2024-11-22 18:00:30,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-22 18:00:30,579 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:30,580 WARN L244 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 18:00:30,580 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2024-11-22 18:00:30,598 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2024-11-22 18:00:30,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 115 transitions, 302 flow [2024-11-22 18:00:30,767 INFO L124 PetriNetUnfolderBase]: 220/1792 cut-off events. [2024-11-22 18:00:30,767 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2024-11-22 18:00:30,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2018 conditions, 1792 events. 220/1792 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 10548 event pairs, 72 based on Foata normal form. 0/1551 useless extension candidates. Maximal degree in co-relation 1071. Up to 192 conditions per place. [2024-11-22 18:00:30,778 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 115 transitions, 302 flow [2024-11-22 18:00:30,784 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 115 transitions, 302 flow [2024-11-22 18:00:30,785 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 18:00:30,786 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@3fc1f1e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 18:00:30,786 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-11-22 18:00:30,787 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 18:00:30,787 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2024-11-22 18:00:30,787 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 18:00:30,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:30,787 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:30,788 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-22 18:00:30,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:30,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1629482773, now seen corresponding path program 1 times [2024-11-22 18:00:30,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:30,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147286447] [2024-11-22 18:00:30,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:30,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:30,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:30,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:30,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:30,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147286447] [2024-11-22 18:00:30,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147286447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:00:30,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:00:30,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 18:00:30,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34585306] [2024-11-22 18:00:30,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:00:30,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 18:00:30,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:30,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 18:00:30,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 18:00:30,799 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 115 [2024-11-22 18:00:30,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 115 transitions, 302 flow. Second operand has 2 states, 2 states have (on average 84.5) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:30,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:30,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 115 [2024-11-22 18:00:30,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 18:00:32,072 INFO L124 PetriNetUnfolderBase]: 2323/11440 cut-off events. [2024-11-22 18:00:32,072 INFO L125 PetriNetUnfolderBase]: For 5873/11199 co-relation queries the response was YES. [2024-11-22 18:00:32,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16399 conditions, 11440 events. 2323/11440 cut-off events. For 5873/11199 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 126010 event pairs, 2016 based on Foata normal form. 899/10837 useless extension candidates. Maximal degree in co-relation 9915. Up to 3110 conditions per place. [2024-11-22 18:00:32,124 INFO L140 encePairwiseOnDemand]: 104/115 looper letters, 19 selfloop transitions, 0 changer transitions 0/102 dead transitions. [2024-11-22 18:00:32,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 102 transitions, 314 flow [2024-11-22 18:00:32,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 18:00:32,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-22 18:00:32,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 198 transitions. [2024-11-22 18:00:32,125 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8608695652173913 [2024-11-22 18:00:32,125 INFO L175 Difference]: Start difference. First operand has 118 places, 115 transitions, 302 flow. Second operand 2 states and 198 transitions. [2024-11-22 18:00:32,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 102 transitions, 314 flow [2024-11-22 18:00:32,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 102 transitions, 314 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 18:00:32,130 INFO L231 Difference]: Finished difference. Result has 110 places, 102 transitions, 276 flow [2024-11-22 18:00:32,130 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=276, PETRI_PLACES=110, PETRI_TRANSITIONS=102} [2024-11-22 18:00:32,131 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -8 predicate places. [2024-11-22 18:00:32,131 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 102 transitions, 276 flow [2024-11-22 18:00:32,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 84.5) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:32,131 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:32,131 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:32,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-22 18:00:32,132 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-22 18:00:32,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:32,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1271229714, now seen corresponding path program 1 times [2024-11-22 18:00:32,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:32,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3559346] [2024-11-22 18:00:32,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:32,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:32,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:32,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:32,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:32,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3559346] [2024-11-22 18:00:32,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3559346] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:00:32,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:00:32,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 18:00:32,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484765518] [2024-11-22 18:00:32,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:00:32,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:00:32,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:32,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:00:32,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:00:32,176 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 115 [2024-11-22 18:00:32,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 102 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:32,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:32,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 115 [2024-11-22 18:00:32,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 18:00:34,511 INFO L124 PetriNetUnfolderBase]: 4800/23166 cut-off events. [2024-11-22 18:00:34,511 INFO L125 PetriNetUnfolderBase]: For 6342/6342 co-relation queries the response was YES. [2024-11-22 18:00:34,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31656 conditions, 23166 events. 4800/23166 cut-off events. For 6342/6342 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 277363 event pairs, 4436 based on Foata normal form. 1/21274 useless extension candidates. Maximal degree in co-relation 31647. Up to 6637 conditions per place. [2024-11-22 18:00:34,623 INFO L140 encePairwiseOnDemand]: 112/115 looper letters, 24 selfloop transitions, 2 changer transitions 3/104 dead transitions. [2024-11-22 18:00:34,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 104 transitions, 334 flow [2024-11-22 18:00:34,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:00:34,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 18:00:34,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2024-11-22 18:00:34,624 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7594202898550725 [2024-11-22 18:00:34,624 INFO L175 Difference]: Start difference. First operand has 110 places, 102 transitions, 276 flow. Second operand 3 states and 262 transitions. [2024-11-22 18:00:34,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 104 transitions, 334 flow [2024-11-22 18:00:34,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 104 transitions, 334 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 18:00:34,627 INFO L231 Difference]: Finished difference. Result has 113 places, 100 transitions, 282 flow [2024-11-22 18:00:34,627 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=282, PETRI_PLACES=113, PETRI_TRANSITIONS=100} [2024-11-22 18:00:34,628 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -5 predicate places. [2024-11-22 18:00:34,628 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 100 transitions, 282 flow [2024-11-22 18:00:34,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:34,628 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:34,628 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:34,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-22 18:00:34,628 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-22 18:00:34,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:34,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1330487050, now seen corresponding path program 1 times [2024-11-22 18:00:34,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:34,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586754790] [2024-11-22 18:00:34,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:34,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:34,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:34,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:34,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586754790] [2024-11-22 18:00:34,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586754790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:00:34,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:00:34,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 18:00:34,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091311054] [2024-11-22 18:00:34,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:00:34,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 18:00:34,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:34,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 18:00:34,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:00:34,844 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 115 [2024-11-22 18:00:34,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 100 transitions, 282 flow. Second operand has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:34,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:34,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 115 [2024-11-22 18:00:34,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 18:00:37,765 INFO L124 PetriNetUnfolderBase]: 12237/28343 cut-off events. [2024-11-22 18:00:37,765 INFO L125 PetriNetUnfolderBase]: For 6163/6163 co-relation queries the response was YES. [2024-11-22 18:00:37,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48080 conditions, 28343 events. 12237/28343 cut-off events. For 6163/6163 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 269037 event pairs, 1392 based on Foata normal form. 0/26633 useless extension candidates. Maximal degree in co-relation 48069. Up to 15006 conditions per place. [2024-11-22 18:00:37,917 INFO L140 encePairwiseOnDemand]: 109/115 looper letters, 53 selfloop transitions, 6 changer transitions 2/123 dead transitions. [2024-11-22 18:00:37,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 123 transitions, 448 flow [2024-11-22 18:00:37,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 18:00:37,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 18:00:37,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 456 transitions. [2024-11-22 18:00:37,919 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6608695652173913 [2024-11-22 18:00:37,919 INFO L175 Difference]: Start difference. First operand has 113 places, 100 transitions, 282 flow. Second operand 6 states and 456 transitions. [2024-11-22 18:00:37,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 123 transitions, 448 flow [2024-11-22 18:00:37,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 123 transitions, 446 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 18:00:37,922 INFO L231 Difference]: Finished difference. Result has 113 places, 97 transitions, 286 flow [2024-11-22 18:00:37,922 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=286, PETRI_PLACES=113, PETRI_TRANSITIONS=97} [2024-11-22 18:00:37,923 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -5 predicate places. [2024-11-22 18:00:37,923 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 97 transitions, 286 flow [2024-11-22 18:00:37,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:37,923 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:37,924 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:37,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-22 18:00:37,924 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-22 18:00:37,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:37,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1962575129, now seen corresponding path program 1 times [2024-11-22 18:00:37,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:37,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578303701] [2024-11-22 18:00:37,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:37,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:37,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:37,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:37,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:37,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578303701] [2024-11-22 18:00:37,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578303701] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:00:37,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17005407] [2024-11-22 18:00:37,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:37,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:00:37,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:00:37,977 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:00:37,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-22 18:00:38,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:38,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 18:00:38,076 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:00:38,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:00:38,083 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 18:00:38,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17005407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:00:38,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 18:00:38,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-22 18:00:38,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251868745] [2024-11-22 18:00:38,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:00:38,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:00:38,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:38,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:00:38,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:00:38,086 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 115 [2024-11-22 18:00:38,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 97 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:38,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:38,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 115 [2024-11-22 18:00:38,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 18:00:40,583 INFO L124 PetriNetUnfolderBase]: 5989/26446 cut-off events. [2024-11-22 18:00:40,584 INFO L125 PetriNetUnfolderBase]: For 10427/12853 co-relation queries the response was YES. [2024-11-22 18:00:40,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37929 conditions, 26446 events. 5989/26446 cut-off events. For 10427/12853 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 324422 event pairs, 2688 based on Foata normal form. 21/23377 useless extension candidates. Maximal degree in co-relation 37918. Up to 6167 conditions per place. [2024-11-22 18:00:40,787 INFO L140 encePairwiseOnDemand]: 106/115 looper letters, 27 selfloop transitions, 8 changer transitions 0/110 dead transitions. [2024-11-22 18:00:40,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 110 transitions, 400 flow [2024-11-22 18:00:40,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:00:40,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 18:00:40,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2024-11-22 18:00:40,789 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.808695652173913 [2024-11-22 18:00:40,789 INFO L175 Difference]: Start difference. First operand has 113 places, 97 transitions, 286 flow. Second operand 3 states and 279 transitions. [2024-11-22 18:00:40,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 110 transitions, 400 flow [2024-11-22 18:00:40,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 110 transitions, 388 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-22 18:00:40,796 INFO L231 Difference]: Finished difference. Result has 110 places, 104 transitions, 336 flow [2024-11-22 18:00:40,796 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=110, PETRI_TRANSITIONS=104} [2024-11-22 18:00:40,797 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -8 predicate places. [2024-11-22 18:00:40,797 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 104 transitions, 336 flow [2024-11-22 18:00:40,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:40,797 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:40,797 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:40,804 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-22 18:00:40,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:00:40,998 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-22 18:00:40,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:40,998 INFO L85 PathProgramCache]: Analyzing trace with hash -310794875, now seen corresponding path program 1 times [2024-11-22 18:00:40,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:40,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815897368] [2024-11-22 18:00:40,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:40,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:41,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:41,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:41,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815897368] [2024-11-22 18:00:41,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815897368] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:00:41,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964905402] [2024-11-22 18:00:41,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:41,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:00:41,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:00:41,082 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:00:41,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-22 18:00:41,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:41,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 18:00:41,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:00:41,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:41,210 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:00:41,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:41,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964905402] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:00:41,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:00:41,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-22 18:00:41,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145138336] [2024-11-22 18:00:41,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:00:41,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 18:00:41,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:41,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 18:00:41,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-22 18:00:41,322 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 115 [2024-11-22 18:00:41,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 104 transitions, 336 flow. Second operand has 10 states, 10 states have (on average 77.3) internal successors, (773), 10 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:41,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:41,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 115 [2024-11-22 18:00:41,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 18:00:44,417 INFO L124 PetriNetUnfolderBase]: 7882/28393 cut-off events. [2024-11-22 18:00:44,418 INFO L125 PetriNetUnfolderBase]: For 19972/21030 co-relation queries the response was YES. [2024-11-22 18:00:44,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51123 conditions, 28393 events. 7882/28393 cut-off events. For 19972/21030 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 327694 event pairs, 1946 based on Foata normal form. 6/25545 useless extension candidates. Maximal degree in co-relation 51111. Up to 8845 conditions per place. [2024-11-22 18:00:44,615 INFO L140 encePairwiseOnDemand]: 109/115 looper letters, 48 selfloop transitions, 9 changer transitions 0/127 dead transitions. [2024-11-22 18:00:44,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 127 transitions, 528 flow [2024-11-22 18:00:44,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 18:00:44,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 18:00:44,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 728 transitions. [2024-11-22 18:00:44,617 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7033816425120772 [2024-11-22 18:00:44,617 INFO L175 Difference]: Start difference. First operand has 110 places, 104 transitions, 336 flow. Second operand 9 states and 728 transitions. [2024-11-22 18:00:44,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 127 transitions, 528 flow [2024-11-22 18:00:44,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 127 transitions, 512 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 18:00:44,634 INFO L231 Difference]: Finished difference. Result has 119 places, 110 transitions, 370 flow [2024-11-22 18:00:44,634 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=370, PETRI_PLACES=119, PETRI_TRANSITIONS=110} [2024-11-22 18:00:44,634 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 1 predicate places. [2024-11-22 18:00:44,635 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 110 transitions, 370 flow [2024-11-22 18:00:44,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 77.3) internal successors, (773), 10 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:44,635 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:44,635 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:44,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-22 18:00:44,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-22 18:00:44,836 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-22 18:00:44,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:44,836 INFO L85 PathProgramCache]: Analyzing trace with hash -525129294, now seen corresponding path program 1 times [2024-11-22 18:00:44,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:44,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078087803] [2024-11-22 18:00:44,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:44,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:44,959 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:44,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:44,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078087803] [2024-11-22 18:00:44,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078087803] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:00:44,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969264283] [2024-11-22 18:00:44,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:44,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:00:44,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:00:44,962 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:00:44,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-22 18:00:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:45,093 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 18:00:45,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:00:45,163 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:45,164 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:00:45,502 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:45,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969264283] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:00:45,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:00:45,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-11-22 18:00:45,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128260277] [2024-11-22 18:00:45,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:00:45,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 18:00:45,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:45,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 18:00:45,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-22 18:00:45,612 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 115 [2024-11-22 18:00:45,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 110 transitions, 370 flow. Second operand has 18 states, 18 states have (on average 77.38888888888889) internal successors, (1393), 18 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:45,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:45,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 115 [2024-11-22 18:00:45,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 18:00:46,141 INFO L124 PetriNetUnfolderBase]: 1542/3669 cut-off events. [2024-11-22 18:00:46,141 INFO L125 PetriNetUnfolderBase]: For 4039/4039 co-relation queries the response was YES. [2024-11-22 18:00:46,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8726 conditions, 3669 events. 1542/3669 cut-off events. For 4039/4039 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 24873 event pairs, 0 based on Foata normal form. 120/3789 useless extension candidates. Maximal degree in co-relation 8712. Up to 1606 conditions per place. [2024-11-22 18:00:46,164 INFO L140 encePairwiseOnDemand]: 110/115 looper letters, 84 selfloop transitions, 19 changer transitions 0/149 dead transitions. [2024-11-22 18:00:46,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 149 transitions, 782 flow [2024-11-22 18:00:46,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-22 18:00:46,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-22 18:00:46,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1682 transitions. [2024-11-22 18:00:46,167 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.69648033126294 [2024-11-22 18:00:46,167 INFO L175 Difference]: Start difference. First operand has 119 places, 110 transitions, 370 flow. Second operand 21 states and 1682 transitions. [2024-11-22 18:00:46,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 149 transitions, 782 flow [2024-11-22 18:00:46,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 149 transitions, 737 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-11-22 18:00:46,174 INFO L231 Difference]: Finished difference. Result has 109 places, 81 transitions, 294 flow [2024-11-22 18:00:46,174 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=294, PETRI_PLACES=109, PETRI_TRANSITIONS=81} [2024-11-22 18:00:46,174 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -9 predicate places. [2024-11-22 18:00:46,174 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 81 transitions, 294 flow [2024-11-22 18:00:46,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 77.38888888888889) internal successors, (1393), 18 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:46,175 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:46,175 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:46,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-22 18:00:46,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-22 18:00:46,376 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-22 18:00:46,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:46,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1625003764, now seen corresponding path program 1 times [2024-11-22 18:00:46,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:46,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206687345] [2024-11-22 18:00:46,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:46,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 18:00:46,406 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 18:00:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 18:00:46,439 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 18:00:46,439 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 18:00:46,440 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2024-11-22 18:00:46,440 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2024-11-22 18:00:46,440 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2024-11-22 18:00:46,440 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2024-11-22 18:00:46,440 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2024-11-22 18:00:46,440 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2024-11-22 18:00:46,440 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2024-11-22 18:00:46,440 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2024-11-22 18:00:46,440 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2024-11-22 18:00:46,440 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2024-11-22 18:00:46,441 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2024-11-22 18:00:46,441 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2024-11-22 18:00:46,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-22 18:00:46,441 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:46,441 WARN L244 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 18:00:46,441 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2024-11-22 18:00:46,472 INFO L143 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2024-11-22 18:00:46,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 123 transitions, 337 flow [2024-11-22 18:00:46,696 INFO L124 PetriNetUnfolderBase]: 480/3428 cut-off events. [2024-11-22 18:00:46,696 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2024-11-22 18:00:46,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3919 conditions, 3428 events. 480/3428 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 25187 event pairs, 201 based on Foata normal form. 0/2988 useless extension candidates. Maximal degree in co-relation 2010. Up to 448 conditions per place. [2024-11-22 18:00:46,708 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 123 transitions, 337 flow [2024-11-22 18:00:46,716 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 123 transitions, 337 flow [2024-11-22 18:00:46,716 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 18:00:46,717 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@3fc1f1e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 18:00:46,717 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-22 18:00:46,718 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 18:00:46,718 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2024-11-22 18:00:46,718 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 18:00:46,718 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:46,718 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:46,718 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-22 18:00:46,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:46,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1031977845, now seen corresponding path program 1 times [2024-11-22 18:00:46,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:46,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888672286] [2024-11-22 18:00:46,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:46,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:46,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:46,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:46,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:46,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888672286] [2024-11-22 18:00:46,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888672286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:00:46,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:00:46,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 18:00:46,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021644981] [2024-11-22 18:00:46,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:00:46,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 18:00:46,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:46,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 18:00:46,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 18:00:46,727 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 123 [2024-11-22 18:00:46,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 123 transitions, 337 flow. Second operand has 2 states, 2 states have (on average 88.5) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:46,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:46,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 123 [2024-11-22 18:00:46,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 18:00:50,761 INFO L124 PetriNetUnfolderBase]: 8348/35176 cut-off events. [2024-11-22 18:00:50,762 INFO L125 PetriNetUnfolderBase]: For 19467/38881 co-relation queries the response was YES. [2024-11-22 18:00:50,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51839 conditions, 35176 events. 8348/35176 cut-off events. For 19467/38881 co-relation queries the response was YES. Maximal size of possible extension queue 850. Compared 457378 event pairs, 7375 based on Foata normal form. 2620/33171 useless extension candidates. Maximal degree in co-relation 32111. Up to 10656 conditions per place. [2024-11-22 18:00:50,957 INFO L140 encePairwiseOnDemand]: 111/123 looper letters, 22 selfloop transitions, 0 changer transitions 0/109 dead transitions. [2024-11-22 18:00:50,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 109 transitions, 353 flow [2024-11-22 18:00:50,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 18:00:50,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-22 18:00:50,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 210 transitions. [2024-11-22 18:00:50,958 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8536585365853658 [2024-11-22 18:00:50,958 INFO L175 Difference]: Start difference. First operand has 127 places, 123 transitions, 337 flow. Second operand 2 states and 210 transitions. [2024-11-22 18:00:50,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 109 transitions, 353 flow [2024-11-22 18:00:50,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 109 transitions, 353 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 18:00:50,964 INFO L231 Difference]: Finished difference. Result has 118 places, 109 transitions, 309 flow [2024-11-22 18:00:50,965 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=309, PETRI_PLACES=118, PETRI_TRANSITIONS=109} [2024-11-22 18:00:50,965 INFO L277 CegarLoopForPetriNet]: 127 programPoint places, -9 predicate places. [2024-11-22 18:00:50,965 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 109 transitions, 309 flow [2024-11-22 18:00:50,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 88.5) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:50,965 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:50,965 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:50,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-22 18:00:50,966 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-22 18:00:50,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:50,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1777054985, now seen corresponding path program 1 times [2024-11-22 18:00:50,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:50,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926429752] [2024-11-22 18:00:50,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:50,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:50,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:50,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:50,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926429752] [2024-11-22 18:00:50,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926429752] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:00:50,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:00:50,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 18:00:50,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611836004] [2024-11-22 18:00:50,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:00:50,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:00:50,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:50,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:00:50,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:00:50,997 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 123 [2024-11-22 18:00:50,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 109 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:50,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:50,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 123 [2024-11-22 18:00:50,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 18:00:58,459 INFO L124 PetriNetUnfolderBase]: 15877/67988 cut-off events. [2024-11-22 18:00:58,459 INFO L125 PetriNetUnfolderBase]: For 20791/20791 co-relation queries the response was YES. [2024-11-22 18:00:58,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95013 conditions, 67988 events. 15877/67988 cut-off events. For 20791/20791 co-relation queries the response was YES. Maximal size of possible extension queue 1186. Compared 936795 event pairs, 14784 based on Foata normal form. 1/62733 useless extension candidates. Maximal degree in co-relation 95003. Up to 21014 conditions per place. [2024-11-22 18:00:58,937 INFO L140 encePairwiseOnDemand]: 120/123 looper letters, 27 selfloop transitions, 2 changer transitions 3/111 dead transitions. [2024-11-22 18:00:58,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 111 transitions, 373 flow [2024-11-22 18:00:58,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:00:58,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 18:00:58,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 277 transitions. [2024-11-22 18:00:58,938 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7506775067750677 [2024-11-22 18:00:58,938 INFO L175 Difference]: Start difference. First operand has 118 places, 109 transitions, 309 flow. Second operand 3 states and 277 transitions. [2024-11-22 18:00:58,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 111 transitions, 373 flow [2024-11-22 18:00:58,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 111 transitions, 373 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 18:00:58,944 INFO L231 Difference]: Finished difference. Result has 121 places, 107 transitions, 315 flow [2024-11-22 18:00:58,944 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=315, PETRI_PLACES=121, PETRI_TRANSITIONS=107} [2024-11-22 18:00:58,944 INFO L277 CegarLoopForPetriNet]: 127 programPoint places, -6 predicate places. [2024-11-22 18:00:58,945 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 107 transitions, 315 flow [2024-11-22 18:00:58,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:58,945 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 18:00:58,945 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:00:58,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-22 18:00:58,945 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-22 18:00:58,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:00:58,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1632802575, now seen corresponding path program 1 times [2024-11-22 18:00:58,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:00:58,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738246844] [2024-11-22 18:00:58,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:00:58,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:00:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:00:59,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:00:59,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:00:59,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738246844] [2024-11-22 18:00:59,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738246844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:00:59,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:00:59,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 18:00:59,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895786993] [2024-11-22 18:00:59,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:00:59,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 18:00:59,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:00:59,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 18:00:59,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:00:59,512 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 123 [2024-11-22 18:00:59,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 107 transitions, 315 flow. Second operand has 6 states, 6 states have (on average 71.66666666666667) internal successors, (430), 6 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:00:59,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 18:00:59,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 123 [2024-11-22 18:00:59,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand