/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 21:01:31,797 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 21:01:31,886 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-25 21:01:31,891 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 21:01:31,892 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 21:01:31,924 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 21:01:31,925 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 21:01:31,925 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 21:01:31,926 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 21:01:31,930 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 21:01:31,930 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 21:01:31,930 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 21:01:31,931 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 21:01:31,932 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 21:01:31,932 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 21:01:31,932 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 21:01:31,932 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 21:01:31,933 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 21:01:31,933 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 21:01:31,933 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 21:01:31,933 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 21:01:31,934 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 21:01:31,934 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 21:01:31,935 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 21:01:31,935 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 21:01:31,935 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 21:01:31,936 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 21:01:31,936 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 21:01:31,936 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 21:01:31,936 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 21:01:31,937 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 21:01:31,937 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 21:01:31,938 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 21:01:31,938 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 21:01:31,938 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 21:01:31,938 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 21:01:32,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 21:01:32,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 21:01:32,287 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 21:01:32,288 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 21:01:32,289 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 21:01:32,290 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c [2023-08-25 21:01:33,467 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 21:01:33,695 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 21:01:33,695 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c [2023-08-25 21:01:33,701 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7f4d3842/365d1a2fc7c447d5932d2449393337fa/FLAG05ade6d90 [2023-08-25 21:01:33,712 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7f4d3842/365d1a2fc7c447d5932d2449393337fa [2023-08-25 21:01:33,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 21:01:33,715 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 21:01:33,716 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 21:01:33,716 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 21:01:33,718 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 21:01:33,719 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 09:01:33" (1/1) ... [2023-08-25 21:01:33,720 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4487ea6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:01:33, skipping insertion in model container [2023-08-25 21:01:33,720 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 09:01:33" (1/1) ... [2023-08-25 21:01:33,738 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 21:01:33,880 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 21:01:33,890 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 21:01:33,930 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 21:01:33,940 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 21:01:33,940 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 21:01:33,948 INFO L206 MainTranslator]: Completed translation [2023-08-25 21:01:33,948 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:01:33 WrapperNode [2023-08-25 21:01:33,948 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 21:01:33,949 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 21:01:33,949 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 21:01:33,950 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 21:01:33,955 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:01:33" (1/1) ... [2023-08-25 21:01:33,972 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:01:33" (1/1) ... [2023-08-25 21:01:33,999 INFO L138 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 93 [2023-08-25 21:01:33,999 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 21:01:34,000 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 21:01:34,000 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 21:01:34,000 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 21:01:34,008 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:01:33" (1/1) ... [2023-08-25 21:01:34,008 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:01:33" (1/1) ... [2023-08-25 21:01:34,022 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:01:33" (1/1) ... [2023-08-25 21:01:34,023 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:01:33" (1/1) ... [2023-08-25 21:01:34,028 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:01:33" (1/1) ... [2023-08-25 21:01:34,031 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:01:33" (1/1) ... [2023-08-25 21:01:34,032 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:01:33" (1/1) ... [2023-08-25 21:01:34,041 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:01:33" (1/1) ... [2023-08-25 21:01:34,047 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 21:01:34,048 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 21:01:34,048 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 21:01:34,048 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 21:01:34,049 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:01:33" (1/1) ... [2023-08-25 21:01:34,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 21:01:34,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:01:34,078 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-25 21:01:34,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-25 21:01:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 21:01:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-25 21:01:34,117 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-25 21:01:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-25 21:01:34,117 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-25 21:01:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 21:01:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 21:01:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 21:01:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-25 21:01:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-25 21:01:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 21:01:34,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 21:01:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 21:01:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 21:01:34,119 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 21:01:34,233 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 21:01:34,235 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 21:01:34,495 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 21:01:34,552 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 21:01:34,552 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-25 21:01:34,554 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 09:01:34 BoogieIcfgContainer [2023-08-25 21:01:34,554 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 21:01:34,556 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 21:01:34,556 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 21:01:34,559 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 21:01:34,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 09:01:33" (1/3) ... [2023-08-25 21:01:34,560 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e7a6821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 09:01:34, skipping insertion in model container [2023-08-25 21:01:34,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:01:33" (2/3) ... [2023-08-25 21:01:34,560 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e7a6821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 09:01:34, skipping insertion in model container [2023-08-25 21:01:34,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 09:01:34" (3/3) ... [2023-08-25 21:01:34,562 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr-alt.wvr.c [2023-08-25 21:01:34,580 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 21:01:34,581 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2023-08-25 21:01:34,581 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 21:01:34,679 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 21:01:34,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 136 transitions, 288 flow [2023-08-25 21:01:34,792 INFO L124 PetriNetUnfolderBase]: 7/134 cut-off events. [2023-08-25 21:01:34,793 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 21:01:34,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 134 events. 7/134 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 105 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2023-08-25 21:01:34,800 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 136 transitions, 288 flow [2023-08-25 21:01:34,834 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 125 transitions, 262 flow [2023-08-25 21:01:34,837 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 21:01:34,844 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 125 places, 125 transitions, 262 flow [2023-08-25 21:01:34,856 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 125 places, 125 transitions, 262 flow [2023-08-25 21:01:34,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 125 transitions, 262 flow [2023-08-25 21:01:34,895 INFO L124 PetriNetUnfolderBase]: 7/125 cut-off events. [2023-08-25 21:01:34,895 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 21:01:34,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 125 events. 7/125 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 103 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2023-08-25 21:01:34,900 INFO L119 LiptonReduction]: Number of co-enabled transitions 1364 [2023-08-25 21:01:38,667 INFO L134 LiptonReduction]: Checked pairs total: 1549 [2023-08-25 21:01:38,667 INFO L136 LiptonReduction]: Total number of compositions: 142 [2023-08-25 21:01:38,679 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 21:01:38,685 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@281be762, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 21:01:38,686 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-08-25 21:01:38,690 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 21:01:38,690 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 21:01:38,690 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 21:01:38,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:01:38,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 21:01:38,692 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:01:38,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:01:38,697 INFO L85 PathProgramCache]: Analyzing trace with hash 562, now seen corresponding path program 1 times [2023-08-25 21:01:38,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:01:38,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955889893] [2023-08-25 21:01:38,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:01:38,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:01:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:01:38,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:38,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:01:38,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955889893] [2023-08-25 21:01:38,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955889893] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:01:38,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:01:38,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 21:01:38,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306572022] [2023-08-25 21:01:38,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:01:38,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 21:01:38,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:01:38,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 21:01:38,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 21:01:38,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 278 [2023-08-25 21:01:38,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 74 flow. Second operand has 2 states, 2 states have (on average 120.5) internal successors, (241), 2 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:38,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:01:38,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 278 [2023-08-25 21:01:38,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:01:38,867 INFO L124 PetriNetUnfolderBase]: 44/77 cut-off events. [2023-08-25 21:01:38,867 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-25 21:01:38,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 77 events. 44/77 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 184 event pairs, 18 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 120. Up to 74 conditions per place. [2023-08-25 21:01:38,869 INFO L140 encePairwiseOnDemand]: 262/278 looper letters, 13 selfloop transitions, 0 changer transitions 0/15 dead transitions. [2023-08-25 21:01:38,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 15 transitions, 68 flow [2023-08-25 21:01:38,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 21:01:38,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 21:01:38,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 269 transitions. [2023-08-25 21:01:38,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48381294964028776 [2023-08-25 21:01:38,893 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 269 transitions. [2023-08-25 21:01:38,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 269 transitions. [2023-08-25 21:01:38,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:01:38,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 269 transitions. [2023-08-25 21:01:38,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 134.5) internal successors, (269), 2 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:38,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:38,906 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:38,907 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 74 flow. Second operand 2 states and 269 transitions. [2023-08-25 21:01:38,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 15 transitions, 68 flow [2023-08-25 21:01:38,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 15 transitions, 60 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 21:01:38,911 INFO L231 Difference]: Finished difference. Result has 17 places, 15 transitions, 34 flow [2023-08-25 21:01:38,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=34, PETRI_PLACES=17, PETRI_TRANSITIONS=15} [2023-08-25 21:01:38,915 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -19 predicate places. [2023-08-25 21:01:38,916 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 15 transitions, 34 flow [2023-08-25 21:01:38,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 120.5) internal successors, (241), 2 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:38,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:01:38,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:01:38,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 21:01:38,917 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:01:38,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:01:38,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1429243733, now seen corresponding path program 1 times [2023-08-25 21:01:38,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:01:38,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390111612] [2023-08-25 21:01:38,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:01:38,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:01:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:01:39,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:39,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:01:39,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390111612] [2023-08-25 21:01:39,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390111612] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:01:39,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:01:39,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 21:01:39,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464125750] [2023-08-25 21:01:39,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:01:39,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 21:01:39,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:01:39,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 21:01:39,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-25 21:01:39,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 278 [2023-08-25 21:01:39,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 15 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:39,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:01:39,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 278 [2023-08-25 21:01:39,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:01:39,213 INFO L124 PetriNetUnfolderBase]: 54/95 cut-off events. [2023-08-25 21:01:39,213 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 21:01:39,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 95 events. 54/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 246 event pairs, 10 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 193. Up to 73 conditions per place. [2023-08-25 21:01:39,214 INFO L140 encePairwiseOnDemand]: 274/278 looper letters, 17 selfloop transitions, 3 changer transitions 0/21 dead transitions. [2023-08-25 21:01:39,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 21 transitions, 87 flow [2023-08-25 21:01:39,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 21:01:39,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 21:01:39,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 461 transitions. [2023-08-25 21:01:39,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.414568345323741 [2023-08-25 21:01:39,218 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 461 transitions. [2023-08-25 21:01:39,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 461 transitions. [2023-08-25 21:01:39,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:01:39,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 461 transitions. [2023-08-25 21:01:39,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 115.25) internal successors, (461), 4 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:39,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:39,225 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:39,225 INFO L175 Difference]: Start difference. First operand has 17 places, 15 transitions, 34 flow. Second operand 4 states and 461 transitions. [2023-08-25 21:01:39,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 21 transitions, 87 flow [2023-08-25 21:01:39,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 21 transitions, 87 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 21:01:39,227 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 48 flow [2023-08-25 21:01:39,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2023-08-25 21:01:39,228 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -15 predicate places. [2023-08-25 21:01:39,228 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 48 flow [2023-08-25 21:01:39,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:39,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:01:39,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:01:39,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 21:01:39,233 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:01:39,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:01:39,235 INFO L85 PathProgramCache]: Analyzing trace with hash 160253748, now seen corresponding path program 1 times [2023-08-25 21:01:39,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:01:39,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267851004] [2023-08-25 21:01:39,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:01:39,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:01:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:01:39,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:01:39,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:01:39,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267851004] [2023-08-25 21:01:39,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267851004] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:01:39,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:01:39,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 21:01:39,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439307480] [2023-08-25 21:01:39,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:01:39,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 21:01:39,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:01:39,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 21:01:39,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-25 21:01:39,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 278 [2023-08-25 21:01:39,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 48 flow. Second operand has 4 states, 4 states have (on average 116.25) internal successors, (465), 4 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:39,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:01:39,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 278 [2023-08-25 21:01:39,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:01:39,455 INFO L124 PetriNetUnfolderBase]: 51/93 cut-off events. [2023-08-25 21:01:39,455 INFO L125 PetriNetUnfolderBase]: For 22/31 co-relation queries the response was YES. [2023-08-25 21:01:39,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 93 events. 51/93 cut-off events. For 22/31 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 206 event pairs, 24 based on Foata normal form. 9/84 useless extension candidates. Maximal degree in co-relation 231. Up to 73 conditions per place. [2023-08-25 21:01:39,463 INFO L140 encePairwiseOnDemand]: 274/278 looper letters, 19 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2023-08-25 21:01:39,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 23 transitions, 114 flow [2023-08-25 21:01:39,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 21:01:39,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 21:01:39,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 473 transitions. [2023-08-25 21:01:39,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42535971223021585 [2023-08-25 21:01:39,466 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 473 transitions. [2023-08-25 21:01:39,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 473 transitions. [2023-08-25 21:01:39,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:01:39,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 473 transitions. [2023-08-25 21:01:39,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 118.25) internal successors, (473), 4 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:39,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:39,470 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:39,470 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 48 flow. Second operand 4 states and 473 transitions. [2023-08-25 21:01:39,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 23 transitions, 114 flow [2023-08-25 21:01:39,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 23 transitions, 105 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-25 21:01:39,471 INFO L231 Difference]: Finished difference. Result has 23 places, 17 transitions, 56 flow [2023-08-25 21:01:39,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=56, PETRI_PLACES=23, PETRI_TRANSITIONS=17} [2023-08-25 21:01:39,473 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -13 predicate places. [2023-08-25 21:01:39,473 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 17 transitions, 56 flow [2023-08-25 21:01:39,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.25) internal successors, (465), 4 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:39,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:01:39,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:01:39,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 21:01:39,478 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:01:39,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:01:39,479 INFO L85 PathProgramCache]: Analyzing trace with hash -472165622, now seen corresponding path program 1 times [2023-08-25 21:01:39,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:01:39,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156346639] [2023-08-25 21:01:39,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:01:39,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:01:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:01:39,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:39,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:01:39,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156346639] [2023-08-25 21:01:39,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156346639] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:01:39,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670401096] [2023-08-25 21:01:39,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:01:39,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:01:39,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:01:39,949 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:01:39,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-25 21:01:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:01:40,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 21:01:40,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:01:40,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:40,334 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:01:40,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:40,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670401096] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:01:40,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:01:40,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2023-08-25 21:01:40,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434599840] [2023-08-25 21:01:40,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:01:40,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-25 21:01:40,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:01:40,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-25 21:01:40,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2023-08-25 21:01:40,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:01:40,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 17 transitions, 56 flow. Second operand has 21 states, 21 states have (on average 104.85714285714286) internal successors, (2202), 21 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:40,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:01:40,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:01:40,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:01:41,814 INFO L124 PetriNetUnfolderBase]: 167/324 cut-off events. [2023-08-25 21:01:41,814 INFO L125 PetriNetUnfolderBase]: For 109/109 co-relation queries the response was YES. [2023-08-25 21:01:41,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 888 conditions, 324 events. 167/324 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1260 event pairs, 20 based on Foata normal form. 2/252 useless extension candidates. Maximal degree in co-relation 882. Up to 107 conditions per place. [2023-08-25 21:01:41,817 INFO L140 encePairwiseOnDemand]: 270/278 looper letters, 66 selfloop transitions, 30 changer transitions 29/125 dead transitions. [2023-08-25 21:01:41,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 125 transitions, 642 flow [2023-08-25 21:01:41,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-25 21:01:41,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-25 21:01:41,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2285 transitions. [2023-08-25 21:01:41,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39140116478245973 [2023-08-25 21:01:41,824 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2285 transitions. [2023-08-25 21:01:41,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2285 transitions. [2023-08-25 21:01:41,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:01:41,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2285 transitions. [2023-08-25 21:01:41,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 108.80952380952381) internal successors, (2285), 21 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:41,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 278.0) internal successors, (6116), 22 states have internal predecessors, (6116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:41,839 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 278.0) internal successors, (6116), 22 states have internal predecessors, (6116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:41,839 INFO L175 Difference]: Start difference. First operand has 23 places, 17 transitions, 56 flow. Second operand 21 states and 2285 transitions. [2023-08-25 21:01:41,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 125 transitions, 642 flow [2023-08-25 21:01:41,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 125 transitions, 611 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-25 21:01:41,842 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 281 flow [2023-08-25 21:01:41,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=281, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2023-08-25 21:01:41,843 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 15 predicate places. [2023-08-25 21:01:41,843 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 281 flow [2023-08-25 21:01:41,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 104.85714285714286) internal successors, (2202), 21 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:41,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:01:41,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:01:41,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-25 21:01:42,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:01:42,049 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:01:42,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:01:42,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1572900476, now seen corresponding path program 2 times [2023-08-25 21:01:42,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:01:42,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705350979] [2023-08-25 21:01:42,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:01:42,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:01:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:01:42,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:42,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:01:42,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705350979] [2023-08-25 21:01:42,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705350979] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:01:42,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221290289] [2023-08-25 21:01:42,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 21:01:42,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:01:42,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:01:42,338 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:01:42,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-25 21:01:42,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 21:01:42,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:01:42,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 21:01:42,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:01:42,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:42,611 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:01:43,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:43,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221290289] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:01:43,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:01:43,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2023-08-25 21:01:43,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733185002] [2023-08-25 21:01:43,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:01:43,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-25 21:01:43,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:01:43,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-25 21:01:43,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2023-08-25 21:01:43,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:01:43,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 281 flow. Second operand has 21 states, 21 states have (on average 104.76190476190476) internal successors, (2200), 21 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:43,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:01:43,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:01:43,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:01:44,062 INFO L124 PetriNetUnfolderBase]: 187/389 cut-off events. [2023-08-25 21:01:44,062 INFO L125 PetriNetUnfolderBase]: For 843/843 co-relation queries the response was YES. [2023-08-25 21:01:44,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1530 conditions, 389 events. 187/389 cut-off events. For 843/843 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1716 event pairs, 22 based on Foata normal form. 1/362 useless extension candidates. Maximal degree in co-relation 1514. Up to 135 conditions per place. [2023-08-25 21:01:44,066 INFO L140 encePairwiseOnDemand]: 270/278 looper letters, 79 selfloop transitions, 44 changer transitions 15/138 dead transitions. [2023-08-25 21:01:44,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 138 transitions, 974 flow [2023-08-25 21:01:44,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-25 21:01:44,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-25 21:01:44,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2387 transitions. [2023-08-25 21:01:44,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902877697841727 [2023-08-25 21:01:44,072 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2387 transitions. [2023-08-25 21:01:44,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2387 transitions. [2023-08-25 21:01:44,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:01:44,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2387 transitions. [2023-08-25 21:01:44,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 108.5) internal successors, (2387), 22 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:44,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 278.0) internal successors, (6394), 23 states have internal predecessors, (6394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:44,086 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 278.0) internal successors, (6394), 23 states have internal predecessors, (6394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:44,086 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 281 flow. Second operand 22 states and 2387 transitions. [2023-08-25 21:01:44,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 138 transitions, 974 flow [2023-08-25 21:01:44,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 138 transitions, 860 flow, removed 49 selfloop flow, removed 5 redundant places. [2023-08-25 21:01:44,094 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 461 flow [2023-08-25 21:01:44,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=461, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2023-08-25 21:01:44,095 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 35 predicate places. [2023-08-25 21:01:44,095 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 461 flow [2023-08-25 21:01:44,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 104.76190476190476) internal successors, (2200), 21 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:44,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:01:44,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:01:44,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-25 21:01:44,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:01:44,305 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:01:44,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:01:44,306 INFO L85 PathProgramCache]: Analyzing trace with hash -352884622, now seen corresponding path program 3 times [2023-08-25 21:01:44,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:01:44,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088353464] [2023-08-25 21:01:44,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:01:44,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:01:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:01:44,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:44,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:01:44,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088353464] [2023-08-25 21:01:44,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088353464] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:01:44,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942208809] [2023-08-25 21:01:44,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 21:01:44,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:01:44,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:01:44,558 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:01:44,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-25 21:01:44,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 21:01:44,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:01:44,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 21:01:44,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:01:44,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:44,799 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:01:45,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:45,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942208809] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:01:45,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:01:45,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2023-08-25 21:01:45,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805541558] [2023-08-25 21:01:45,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:01:45,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-25 21:01:45,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:01:45,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-25 21:01:45,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2023-08-25 21:01:45,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:01:45,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 461 flow. Second operand has 21 states, 21 states have (on average 104.80952380952381) internal successors, (2201), 21 states have internal predecessors, (2201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:45,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:01:45,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:01:45,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:01:46,035 INFO L124 PetriNetUnfolderBase]: 183/373 cut-off events. [2023-08-25 21:01:46,035 INFO L125 PetriNetUnfolderBase]: For 1035/1035 co-relation queries the response was YES. [2023-08-25 21:01:46,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1587 conditions, 373 events. 183/373 cut-off events. For 1035/1035 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1595 event pairs, 22 based on Foata normal form. 2/375 useless extension candidates. Maximal degree in co-relation 1566. Up to 123 conditions per place. [2023-08-25 21:01:46,039 INFO L140 encePairwiseOnDemand]: 270/278 looper letters, 58 selfloop transitions, 41 changer transitions 23/122 dead transitions. [2023-08-25 21:01:46,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 122 transitions, 916 flow [2023-08-25 21:01:46,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-25 21:01:46,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-25 21:01:46,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2065 transitions. [2023-08-25 21:01:46,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3909503975766755 [2023-08-25 21:01:46,048 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2065 transitions. [2023-08-25 21:01:46,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2065 transitions. [2023-08-25 21:01:46,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:01:46,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2065 transitions. [2023-08-25 21:01:46,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 108.6842105263158) internal successors, (2065), 19 states have internal predecessors, (2065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:46,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 278.0) internal successors, (5560), 20 states have internal predecessors, (5560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:46,062 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 278.0) internal successors, (5560), 20 states have internal predecessors, (5560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:46,062 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 461 flow. Second operand 19 states and 2065 transitions. [2023-08-25 21:01:46,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 122 transitions, 916 flow [2023-08-25 21:01:46,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 122 transitions, 867 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-08-25 21:01:46,069 INFO L231 Difference]: Finished difference. Result has 83 places, 59 transitions, 464 flow [2023-08-25 21:01:46,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=464, PETRI_PLACES=83, PETRI_TRANSITIONS=59} [2023-08-25 21:01:46,070 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 47 predicate places. [2023-08-25 21:01:46,070 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 59 transitions, 464 flow [2023-08-25 21:01:46,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 104.80952380952381) internal successors, (2201), 21 states have internal predecessors, (2201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:46,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:01:46,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:01:46,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-25 21:01:46,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:01:46,281 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:01:46,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:01:46,282 INFO L85 PathProgramCache]: Analyzing trace with hash 96182092, now seen corresponding path program 4 times [2023-08-25 21:01:46,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:01:46,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215262208] [2023-08-25 21:01:46,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:01:46,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:01:46,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:01:46,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:46,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:01:46,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215262208] [2023-08-25 21:01:46,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215262208] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:01:46,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427879038] [2023-08-25 21:01:46,354 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 21:01:46,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:01:46,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:01:46,355 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:01:46,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-25 21:01:46,440 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 21:01:46,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:01:46,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-25 21:01:46,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:01:46,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:46,464 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:01:46,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:46,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427879038] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:01:46,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:01:46,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 5 [2023-08-25 21:01:46,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770333914] [2023-08-25 21:01:46,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:01:46,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 21:01:46,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:01:46,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 21:01:46,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-25 21:01:46,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 278 [2023-08-25 21:01:46,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 59 transitions, 464 flow. Second operand has 6 states, 6 states have (on average 115.5) internal successors, (693), 6 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) [2023-08-25 21:01:46,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:01:46,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 278 [2023-08-25 21:01:46,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:01:46,557 INFO L124 PetriNetUnfolderBase]: 153/296 cut-off events. [2023-08-25 21:01:46,557 INFO L125 PetriNetUnfolderBase]: For 1143/1149 co-relation queries the response was YES. [2023-08-25 21:01:46,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1306 conditions, 296 events. 153/296 cut-off events. For 1143/1149 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1072 event pairs, 22 based on Foata normal form. 24/320 useless extension candidates. Maximal degree in co-relation 1285. Up to 229 conditions per place. [2023-08-25 21:01:46,559 INFO L140 encePairwiseOnDemand]: 273/278 looper letters, 49 selfloop transitions, 12 changer transitions 1/64 dead transitions. [2023-08-25 21:01:46,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 64 transitions, 589 flow [2023-08-25 21:01:46,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 21:01:46,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 21:01:46,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 590 transitions. [2023-08-25 21:01:46,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4244604316546763 [2023-08-25 21:01:46,562 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 590 transitions. [2023-08-25 21:01:46,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 590 transitions. [2023-08-25 21:01:46,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:01:46,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 590 transitions. [2023-08-25 21:01:46,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:46,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 278.0) internal successors, (1668), 6 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:46,566 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 278.0) internal successors, (1668), 6 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:46,566 INFO L175 Difference]: Start difference. First operand has 83 places, 59 transitions, 464 flow. Second operand 5 states and 590 transitions. [2023-08-25 21:01:46,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 64 transitions, 589 flow [2023-08-25 21:01:46,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 64 transitions, 495 flow, removed 4 selfloop flow, removed 17 redundant places. [2023-08-25 21:01:46,571 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 368 flow [2023-08-25 21:01:46,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=368, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2023-08-25 21:01:46,572 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2023-08-25 21:01:46,572 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 368 flow [2023-08-25 21:01:46,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.5) internal successors, (693), 6 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) [2023-08-25 21:01:46,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:01:46,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:01:46,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-25 21:01:46,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:01:46,779 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:01:46,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:01:46,779 INFO L85 PathProgramCache]: Analyzing trace with hash 500806060, now seen corresponding path program 5 times [2023-08-25 21:01:46,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:01:46,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700843542] [2023-08-25 21:01:46,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:01:46,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:01:46,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:01:47,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:47,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:01:47,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700843542] [2023-08-25 21:01:47,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700843542] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:01:47,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666752533] [2023-08-25 21:01:47,039 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 21:01:47,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:01:47,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:01:47,040 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:01:47,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-25 21:01:47,117 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 21:01:47,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:01:47,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-25 21:01:47,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:01:47,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:47,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:01:47,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:47,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666752533] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:01:47,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:01:47,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-08-25 21:01:47,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832064256] [2023-08-25 21:01:47,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:01:47,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 21:01:47,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:01:47,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 21:01:47,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2023-08-25 21:01:47,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:01:47,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 368 flow. Second operand has 22 states, 22 states have (on average 104.9090909090909) internal successors, (2308), 22 states have internal predecessors, (2308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:47,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:01:47,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:01:47,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:01:48,537 INFO L124 PetriNetUnfolderBase]: 245/485 cut-off events. [2023-08-25 21:01:48,537 INFO L125 PetriNetUnfolderBase]: For 1626/1626 co-relation queries the response was YES. [2023-08-25 21:01:48,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2130 conditions, 485 events. 245/485 cut-off events. For 1626/1626 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2187 event pairs, 26 based on Foata normal form. 3/488 useless extension candidates. Maximal degree in co-relation 2112. Up to 261 conditions per place. [2023-08-25 21:01:48,541 INFO L140 encePairwiseOnDemand]: 270/278 looper letters, 74 selfloop transitions, 41 changer transitions 24/139 dead transitions. [2023-08-25 21:01:48,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 139 transitions, 1121 flow [2023-08-25 21:01:48,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-25 21:01:48,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-25 21:01:48,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2270 transitions. [2023-08-25 21:01:48,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38883179170948956 [2023-08-25 21:01:48,548 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2270 transitions. [2023-08-25 21:01:48,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2270 transitions. [2023-08-25 21:01:48,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:01:48,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2270 transitions. [2023-08-25 21:01:48,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 108.0952380952381) internal successors, (2270), 21 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:48,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 278.0) internal successors, (6116), 22 states have internal predecessors, (6116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:48,563 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 278.0) internal successors, (6116), 22 states have internal predecessors, (6116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:48,563 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 368 flow. Second operand 21 states and 2270 transitions. [2023-08-25 21:01:48,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 139 transitions, 1121 flow [2023-08-25 21:01:48,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 139 transitions, 1059 flow, removed 19 selfloop flow, removed 2 redundant places. [2023-08-25 21:01:48,570 INFO L231 Difference]: Finished difference. Result has 84 places, 76 transitions, 668 flow [2023-08-25 21:01:48,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=668, PETRI_PLACES=84, PETRI_TRANSITIONS=76} [2023-08-25 21:01:48,571 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 48 predicate places. [2023-08-25 21:01:48,571 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 76 transitions, 668 flow [2023-08-25 21:01:48,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 104.9090909090909) internal successors, (2308), 22 states have internal predecessors, (2308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:48,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:01:48,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:01:48,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-25 21:01:48,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:01:48,777 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:01:48,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:01:48,777 INFO L85 PathProgramCache]: Analyzing trace with hash -832860666, now seen corresponding path program 6 times [2023-08-25 21:01:48,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:01:48,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669634196] [2023-08-25 21:01:48,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:01:48,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:01:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:01:49,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:49,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:01:49,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669634196] [2023-08-25 21:01:49,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669634196] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:01:49,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844632712] [2023-08-25 21:01:49,053 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 21:01:49,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:01:49,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:01:49,054 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) [2023-08-25 21:01:49,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-25 21:01:49,144 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-25 21:01:49,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:01:49,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 21:01:49,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:01:49,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:49,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:01:49,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:49,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844632712] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:01:49,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:01:49,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2023-08-25 21:01:49,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143846456] [2023-08-25 21:01:49,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:01:49,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-25 21:01:49,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:01:49,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-25 21:01:49,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2023-08-25 21:01:49,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:01:49,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 76 transitions, 668 flow. Second operand has 21 states, 21 states have (on average 104.71428571428571) internal successors, (2199), 21 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:49,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:01:49,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:01:49,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:01:50,109 INFO L124 PetriNetUnfolderBase]: 227/439 cut-off events. [2023-08-25 21:01:50,109 INFO L125 PetriNetUnfolderBase]: For 2039/2039 co-relation queries the response was YES. [2023-08-25 21:01:50,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2158 conditions, 439 events. 227/439 cut-off events. For 2039/2039 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1838 event pairs, 28 based on Foata normal form. 1/440 useless extension candidates. Maximal degree in co-relation 2131. Up to 334 conditions per place. [2023-08-25 21:01:50,113 INFO L140 encePairwiseOnDemand]: 270/278 looper letters, 74 selfloop transitions, 22 changer transitions 16/112 dead transitions. [2023-08-25 21:01:50,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 112 transitions, 1103 flow [2023-08-25 21:01:50,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-25 21:01:50,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-25 21:01:50,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1401 transitions. [2023-08-25 21:01:50,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3876591034864416 [2023-08-25 21:01:50,118 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1401 transitions. [2023-08-25 21:01:50,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1401 transitions. [2023-08-25 21:01:50,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:01:50,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1401 transitions. [2023-08-25 21:01:50,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 107.76923076923077) internal successors, (1401), 13 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:50,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 278.0) internal successors, (3892), 14 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:50,169 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 278.0) internal successors, (3892), 14 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:50,170 INFO L175 Difference]: Start difference. First operand has 84 places, 76 transitions, 668 flow. Second operand 13 states and 1401 transitions. [2023-08-25 21:01:50,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 112 transitions, 1103 flow [2023-08-25 21:01:50,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 112 transitions, 989 flow, removed 43 selfloop flow, removed 10 redundant places. [2023-08-25 21:01:50,179 INFO L231 Difference]: Finished difference. Result has 84 places, 77 transitions, 633 flow [2023-08-25 21:01:50,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=633, PETRI_PLACES=84, PETRI_TRANSITIONS=77} [2023-08-25 21:01:50,180 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 48 predicate places. [2023-08-25 21:01:50,180 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 77 transitions, 633 flow [2023-08-25 21:01:50,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 104.71428571428571) internal successors, (2199), 21 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:50,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:01:50,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:01:50,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-25 21:01:50,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:01:50,387 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:01:50,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:01:50,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1093611302, now seen corresponding path program 7 times [2023-08-25 21:01:50,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:01:50,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799182249] [2023-08-25 21:01:50,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:01:50,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:01:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:01:50,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:50,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:01:50,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799182249] [2023-08-25 21:01:50,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799182249] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:01:50,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610915815] [2023-08-25 21:01:50,599 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 21:01:50,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:01:50,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:01:50,600 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) [2023-08-25 21:01:50,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-25 21:01:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:01:50,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 21:01:50,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:01:50,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:50,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:01:51,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:51,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610915815] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:01:51,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:01:51,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2023-08-25 21:01:51,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912405291] [2023-08-25 21:01:51,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:01:51,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-25 21:01:51,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:01:51,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-25 21:01:51,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2023-08-25 21:01:51,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:01:51,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 77 transitions, 633 flow. Second operand has 21 states, 21 states have (on average 104.76190476190476) internal successors, (2200), 21 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:51,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:01:51,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:01:51,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:01:51,807 INFO L124 PetriNetUnfolderBase]: 235/455 cut-off events. [2023-08-25 21:01:51,807 INFO L125 PetriNetUnfolderBase]: For 1746/1746 co-relation queries the response was YES. [2023-08-25 21:01:51,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2091 conditions, 455 events. 235/455 cut-off events. For 1746/1746 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1922 event pairs, 16 based on Foata normal form. 2/457 useless extension candidates. Maximal degree in co-relation 2065. Up to 293 conditions per place. [2023-08-25 21:01:51,811 INFO L140 encePairwiseOnDemand]: 269/278 looper letters, 84 selfloop transitions, 27 changer transitions 20/131 dead transitions. [2023-08-25 21:01:51,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 131 transitions, 1182 flow [2023-08-25 21:01:51,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-25 21:01:51,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-25 21:01:51,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1521 transitions. [2023-08-25 21:01:51,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3908016443987667 [2023-08-25 21:01:51,814 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1521 transitions. [2023-08-25 21:01:51,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1521 transitions. [2023-08-25 21:01:51,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:01:51,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1521 transitions. [2023-08-25 21:01:51,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 108.64285714285714) internal successors, (1521), 14 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:51,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 278.0) internal successors, (4170), 15 states have internal predecessors, (4170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:51,822 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 278.0) internal successors, (4170), 15 states have internal predecessors, (4170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:51,822 INFO L175 Difference]: Start difference. First operand has 84 places, 77 transitions, 633 flow. Second operand 14 states and 1521 transitions. [2023-08-25 21:01:51,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 131 transitions, 1182 flow [2023-08-25 21:01:51,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 131 transitions, 1116 flow, removed 15 selfloop flow, removed 7 redundant places. [2023-08-25 21:01:51,830 INFO L231 Difference]: Finished difference. Result has 95 places, 82 transitions, 712 flow [2023-08-25 21:01:51,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=712, PETRI_PLACES=95, PETRI_TRANSITIONS=82} [2023-08-25 21:01:51,831 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 59 predicate places. [2023-08-25 21:01:51,831 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 82 transitions, 712 flow [2023-08-25 21:01:51,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 104.76190476190476) internal successors, (2200), 21 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:51,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:01:51,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:01:51,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-25 21:01:52,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:01:52,041 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:01:52,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:01:52,042 INFO L85 PathProgramCache]: Analyzing trace with hash -827609114, now seen corresponding path program 8 times [2023-08-25 21:01:52,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:01:52,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470327994] [2023-08-25 21:01:52,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:01:52,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:01:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:01:52,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:52,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:01:52,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470327994] [2023-08-25 21:01:52,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470327994] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:01:52,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110005637] [2023-08-25 21:01:52,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 21:01:52,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:01:52,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:01:52,293 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) [2023-08-25 21:01:52,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-25 21:01:52,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 21:01:52,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:01:52,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 21:01:52,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:01:52,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:52,563 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:01:52,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:52,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110005637] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:01:52,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:01:52,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2023-08-25 21:01:52,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871124872] [2023-08-25 21:01:52,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:01:52,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-25 21:01:52,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:01:52,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-25 21:01:52,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2023-08-25 21:01:52,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:01:52,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 82 transitions, 712 flow. Second operand has 21 states, 21 states have (on average 104.71428571428571) internal successors, (2199), 21 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:52,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:01:52,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:01:52,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:01:53,193 INFO L124 PetriNetUnfolderBase]: 207/389 cut-off events. [2023-08-25 21:01:53,193 INFO L125 PetriNetUnfolderBase]: For 1460/1460 co-relation queries the response was YES. [2023-08-25 21:01:53,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1883 conditions, 389 events. 207/389 cut-off events. For 1460/1460 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1483 event pairs, 14 based on Foata normal form. 1/390 useless extension candidates. Maximal degree in co-relation 1850. Up to 294 conditions per place. [2023-08-25 21:01:53,197 INFO L140 encePairwiseOnDemand]: 270/278 looper letters, 78 selfloop transitions, 25 changer transitions 9/112 dead transitions. [2023-08-25 21:01:53,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 112 transitions, 1106 flow [2023-08-25 21:01:53,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-25 21:01:53,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-25 21:01:53,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1397 transitions. [2023-08-25 21:01:53,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38655229662423907 [2023-08-25 21:01:53,200 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1397 transitions. [2023-08-25 21:01:53,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1397 transitions. [2023-08-25 21:01:53,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:01:53,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1397 transitions. [2023-08-25 21:01:53,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 107.46153846153847) internal successors, (1397), 13 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:53,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 278.0) internal successors, (3892), 14 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:53,207 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 278.0) internal successors, (3892), 14 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:53,207 INFO L175 Difference]: Start difference. First operand has 95 places, 82 transitions, 712 flow. Second operand 13 states and 1397 transitions. [2023-08-25 21:01:53,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 112 transitions, 1106 flow [2023-08-25 21:01:53,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 112 transitions, 985 flow, removed 34 selfloop flow, removed 15 redundant places. [2023-08-25 21:01:53,216 INFO L231 Difference]: Finished difference. Result has 89 places, 83 transitions, 694 flow [2023-08-25 21:01:53,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=694, PETRI_PLACES=89, PETRI_TRANSITIONS=83} [2023-08-25 21:01:53,217 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 53 predicate places. [2023-08-25 21:01:53,217 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 83 transitions, 694 flow [2023-08-25 21:01:53,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 104.71428571428571) internal successors, (2199), 21 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:53,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:01:53,218 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:01:53,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-25 21:01:53,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-25 21:01:53,425 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:01:53,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:01:53,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1947968031, now seen corresponding path program 9 times [2023-08-25 21:01:53,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:01:53,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226737856] [2023-08-25 21:01:53,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:01:53,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:01:53,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:01:53,644 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:53,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:01:53,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226737856] [2023-08-25 21:01:53,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226737856] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:01:53,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945924788] [2023-08-25 21:01:53,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 21:01:53,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:01:53,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:01:53,645 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) [2023-08-25 21:01:53,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-25 21:01:53,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 21:01:53,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:01:53,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-25 21:01:53,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:01:53,884 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:53,885 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:01:54,271 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:54,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945924788] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:01:54,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:01:54,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2023-08-25 21:01:54,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830514863] [2023-08-25 21:01:54,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:01:54,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-25 21:01:54,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:01:54,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-25 21:01:54,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2023-08-25 21:01:54,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:01:54,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 83 transitions, 694 flow. Second operand has 23 states, 23 states have (on average 104.69565217391305) internal successors, (2408), 23 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:54,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:01:54,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:01:54,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:01:55,056 INFO L124 PetriNetUnfolderBase]: 263/503 cut-off events. [2023-08-25 21:01:55,057 INFO L125 PetriNetUnfolderBase]: For 1732/1732 co-relation queries the response was YES. [2023-08-25 21:01:55,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2346 conditions, 503 events. 263/503 cut-off events. For 1732/1732 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2172 event pairs, 8 based on Foata normal form. 3/506 useless extension candidates. Maximal degree in co-relation 2322. Up to 171 conditions per place. [2023-08-25 21:01:55,060 INFO L140 encePairwiseOnDemand]: 270/278 looper letters, 80 selfloop transitions, 86 changer transitions 17/183 dead transitions. [2023-08-25 21:01:55,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 183 transitions, 1571 flow [2023-08-25 21:01:55,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-25 21:01:55,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-25 21:01:55,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2604 transitions. [2023-08-25 21:01:55,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902877697841727 [2023-08-25 21:01:55,071 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2604 transitions. [2023-08-25 21:01:55,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2604 transitions. [2023-08-25 21:01:55,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:01:55,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2604 transitions. [2023-08-25 21:01:55,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 108.5) internal successors, (2604), 24 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:55,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 278.0) internal successors, (6950), 25 states have internal predecessors, (6950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:55,085 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 278.0) internal successors, (6950), 25 states have internal predecessors, (6950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:55,085 INFO L175 Difference]: Start difference. First operand has 89 places, 83 transitions, 694 flow. Second operand 24 states and 2604 transitions. [2023-08-25 21:01:55,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 183 transitions, 1571 flow [2023-08-25 21:01:55,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 183 transitions, 1471 flow, removed 14 selfloop flow, removed 12 redundant places. [2023-08-25 21:01:55,101 INFO L231 Difference]: Finished difference. Result has 105 places, 108 transitions, 1054 flow [2023-08-25 21:01:55,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1054, PETRI_PLACES=105, PETRI_TRANSITIONS=108} [2023-08-25 21:01:55,102 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 69 predicate places. [2023-08-25 21:01:55,102 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 108 transitions, 1054 flow [2023-08-25 21:01:55,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 104.69565217391305) internal successors, (2408), 23 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:55,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:01:55,103 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:01:55,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-25 21:01:55,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:01:55,309 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:01:55,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:01:55,309 INFO L85 PathProgramCache]: Analyzing trace with hash -264810999, now seen corresponding path program 10 times [2023-08-25 21:01:55,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:01:55,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904702348] [2023-08-25 21:01:55,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:01:55,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:01:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:01:55,520 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:55,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:01:55,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904702348] [2023-08-25 21:01:55,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904702348] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:01:55,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632587826] [2023-08-25 21:01:55,520 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 21:01:55,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:01:55,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:01:55,522 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) [2023-08-25 21:01:55,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-25 21:01:55,609 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 21:01:55,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:01:55,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-25 21:01:55,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:01:55,779 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:55,779 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:01:56,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:56,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632587826] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:01:56,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:01:56,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2023-08-25 21:01:56,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888400288] [2023-08-25 21:01:56,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:01:56,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-25 21:01:56,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:01:56,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-25 21:01:56,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2023-08-25 21:01:56,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:01:56,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 108 transitions, 1054 flow. Second operand has 23 states, 23 states have (on average 104.73913043478261) internal successors, (2409), 23 states have internal predecessors, (2409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:56,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:01:56,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:01:56,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:01:57,139 INFO L124 PetriNetUnfolderBase]: 279/543 cut-off events. [2023-08-25 21:01:57,139 INFO L125 PetriNetUnfolderBase]: For 2869/2869 co-relation queries the response was YES. [2023-08-25 21:01:57,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2939 conditions, 543 events. 279/543 cut-off events. For 2869/2869 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2462 event pairs, 10 based on Foata normal form. 3/546 useless extension candidates. Maximal degree in co-relation 2910. Up to 189 conditions per place. [2023-08-25 21:01:57,144 INFO L140 encePairwiseOnDemand]: 270/278 looper letters, 77 selfloop transitions, 88 changer transitions 17/182 dead transitions. [2023-08-25 21:01:57,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 182 transitions, 1815 flow [2023-08-25 21:01:57,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-25 21:01:57,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-25 21:01:57,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2494 transitions. [2023-08-25 21:01:57,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3900531748514232 [2023-08-25 21:01:57,148 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2494 transitions. [2023-08-25 21:01:57,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2494 transitions. [2023-08-25 21:01:57,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:01:57,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2494 transitions. [2023-08-25 21:01:57,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 108.43478260869566) internal successors, (2494), 23 states have internal predecessors, (2494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:57,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 278.0) internal successors, (6672), 24 states have internal predecessors, (6672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:57,158 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 278.0) internal successors, (6672), 24 states have internal predecessors, (6672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:57,158 INFO L175 Difference]: Start difference. First operand has 105 places, 108 transitions, 1054 flow. Second operand 23 states and 2494 transitions. [2023-08-25 21:01:57,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 182 transitions, 1815 flow [2023-08-25 21:01:57,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 182 transitions, 1517 flow, removed 99 selfloop flow, removed 13 redundant places. [2023-08-25 21:01:57,174 INFO L231 Difference]: Finished difference. Result has 119 places, 113 transitions, 1076 flow [2023-08-25 21:01:57,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1076, PETRI_PLACES=119, PETRI_TRANSITIONS=113} [2023-08-25 21:01:57,175 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 83 predicate places. [2023-08-25 21:01:57,175 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 113 transitions, 1076 flow [2023-08-25 21:01:57,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 104.73913043478261) internal successors, (2409), 23 states have internal predecessors, (2409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:57,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:01:57,176 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:01:57,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-25 21:01:57,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-25 21:01:57,381 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:01:57,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:01:57,381 INFO L85 PathProgramCache]: Analyzing trace with hash 2097000261, now seen corresponding path program 11 times [2023-08-25 21:01:57,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:01:57,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071814092] [2023-08-25 21:01:57,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:01:57,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:01:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:01:57,595 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:57,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:01:57,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071814092] [2023-08-25 21:01:57,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071814092] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:01:57,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116688890] [2023-08-25 21:01:57,596 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 21:01:57,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:01:57,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:01:57,598 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) [2023-08-25 21:01:57,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-25 21:01:57,678 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-25 21:01:57,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:01:57,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-25 21:01:57,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:01:57,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:57,825 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:01:58,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:58,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116688890] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:01:58,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:01:58,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2023-08-25 21:01:58,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746987279] [2023-08-25 21:01:58,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:01:58,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-25 21:01:58,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:01:58,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-25 21:01:58,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2023-08-25 21:01:58,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:01:58,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 113 transitions, 1076 flow. Second operand has 25 states, 25 states have (on average 104.76) internal successors, (2619), 25 states have internal predecessors, (2619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:58,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:01:58,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:01:58,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:01:59,201 INFO L124 PetriNetUnfolderBase]: 321/629 cut-off events. [2023-08-25 21:01:59,202 INFO L125 PetriNetUnfolderBase]: For 5772/5772 co-relation queries the response was YES. [2023-08-25 21:01:59,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3485 conditions, 629 events. 321/629 cut-off events. For 5772/5772 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3008 event pairs, 4 based on Foata normal form. 3/632 useless extension candidates. Maximal degree in co-relation 3453. Up to 203 conditions per place. [2023-08-25 21:01:59,207 INFO L140 encePairwiseOnDemand]: 270/278 looper letters, 91 selfloop transitions, 103 changer transitions 16/210 dead transitions. [2023-08-25 21:01:59,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 210 transitions, 2099 flow [2023-08-25 21:01:59,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-25 21:01:59,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-25 21:01:59,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3133 transitions. [2023-08-25 21:01:59,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38861324733316793 [2023-08-25 21:01:59,211 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3133 transitions. [2023-08-25 21:01:59,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3133 transitions. [2023-08-25 21:01:59,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:01:59,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3133 transitions. [2023-08-25 21:01:59,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 108.03448275862068) internal successors, (3133), 29 states have internal predecessors, (3133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:59,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 278.0) internal successors, (8340), 30 states have internal predecessors, (8340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:59,226 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 278.0) internal successors, (8340), 30 states have internal predecessors, (8340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:59,226 INFO L175 Difference]: Start difference. First operand has 119 places, 113 transitions, 1076 flow. Second operand 29 states and 3133 transitions. [2023-08-25 21:01:59,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 210 transitions, 2099 flow [2023-08-25 21:01:59,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 210 transitions, 1841 flow, removed 45 selfloop flow, removed 19 redundant places. [2023-08-25 21:01:59,247 INFO L231 Difference]: Finished difference. Result has 136 places, 133 transitions, 1397 flow [2023-08-25 21:01:59,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1397, PETRI_PLACES=136, PETRI_TRANSITIONS=133} [2023-08-25 21:01:59,248 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 100 predicate places. [2023-08-25 21:01:59,248 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 133 transitions, 1397 flow [2023-08-25 21:01:59,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 104.76) internal successors, (2619), 25 states have internal predecessors, (2619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:01:59,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:01:59,249 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:01:59,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-25 21:01:59,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-25 21:01:59,455 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:01:59,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:01:59,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1967726541, now seen corresponding path program 12 times [2023-08-25 21:01:59,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:01:59,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495915154] [2023-08-25 21:01:59,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:01:59,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:01:59,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:01:59,668 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:59,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:01:59,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495915154] [2023-08-25 21:01:59,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495915154] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:01:59,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912993193] [2023-08-25 21:01:59,669 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 21:01:59,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:01:59,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:01:59,670 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) [2023-08-25 21:01:59,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-25 21:01:59,762 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-25 21:01:59,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:01:59,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-25 21:01:59,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:01:59,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:01:59,932 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:00,259 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:00,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912993193] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:00,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:00,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2023-08-25 21:02:00,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923355101] [2023-08-25 21:02:00,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:00,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-25 21:02:00,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:00,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-25 21:02:00,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2023-08-25 21:02:00,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:02:00,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 133 transitions, 1397 flow. Second operand has 23 states, 23 states have (on average 104.73913043478261) internal successors, (2409), 23 states have internal predecessors, (2409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:00,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:00,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:02:00,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:01,219 INFO L124 PetriNetUnfolderBase]: 350/691 cut-off events. [2023-08-25 21:02:01,219 INFO L125 PetriNetUnfolderBase]: For 8444/8444 co-relation queries the response was YES. [2023-08-25 21:02:01,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4261 conditions, 691 events. 350/691 cut-off events. For 8444/8444 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3402 event pairs, 16 based on Foata normal form. 4/695 useless extension candidates. Maximal degree in co-relation 4224. Up to 231 conditions per place. [2023-08-25 21:02:01,226 INFO L140 encePairwiseOnDemand]: 270/278 looper letters, 86 selfloop transitions, 108 changer transitions 17/211 dead transitions. [2023-08-25 21:02:01,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 211 transitions, 2379 flow [2023-08-25 21:02:01,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-25 21:02:01,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-25 21:02:01,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2606 transitions. [2023-08-25 21:02:01,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3905875299760192 [2023-08-25 21:02:01,230 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2606 transitions. [2023-08-25 21:02:01,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2606 transitions. [2023-08-25 21:02:01,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:01,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2606 transitions. [2023-08-25 21:02:01,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 108.58333333333333) internal successors, (2606), 24 states have internal predecessors, (2606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:01,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 278.0) internal successors, (6950), 25 states have internal predecessors, (6950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:01,240 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 278.0) internal successors, (6950), 25 states have internal predecessors, (6950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:01,240 INFO L175 Difference]: Start difference. First operand has 136 places, 133 transitions, 1397 flow. Second operand 24 states and 2606 transitions. [2023-08-25 21:02:01,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 211 transitions, 2379 flow [2023-08-25 21:02:01,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 211 transitions, 1912 flow, removed 171 selfloop flow, removed 18 redundant places. [2023-08-25 21:02:01,267 INFO L231 Difference]: Finished difference. Result has 144 places, 140 transitions, 1465 flow [2023-08-25 21:02:01,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=1073, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1465, PETRI_PLACES=144, PETRI_TRANSITIONS=140} [2023-08-25 21:02:01,268 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 108 predicate places. [2023-08-25 21:02:01,268 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 140 transitions, 1465 flow [2023-08-25 21:02:01,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 104.73913043478261) internal successors, (2409), 23 states have internal predecessors, (2409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:01,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:01,269 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:01,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-25 21:02:01,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-25 21:02:01,474 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:02:01,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:01,475 INFO L85 PathProgramCache]: Analyzing trace with hash -744787043, now seen corresponding path program 13 times [2023-08-25 21:02:01,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:01,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857914910] [2023-08-25 21:02:01,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:01,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:01,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:01,663 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:01,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:01,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857914910] [2023-08-25 21:02:01,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857914910] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:01,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053251360] [2023-08-25 21:02:01,664 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 21:02:01,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:01,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:01,665 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) [2023-08-25 21:02:01,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-25 21:02:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:01,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-25 21:02:01,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:01,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:01,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:02,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:02,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053251360] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:02,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:02,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2023-08-25 21:02:02,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082240825] [2023-08-25 21:02:02,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:02,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-25 21:02:02,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:02,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-25 21:02:02,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2023-08-25 21:02:02,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:02:02,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 140 transitions, 1465 flow. Second operand has 23 states, 23 states have (on average 104.65217391304348) internal successors, (2407), 23 states have internal predecessors, (2407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:02,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:02,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:02:02,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:03,193 INFO L124 PetriNetUnfolderBase]: 442/867 cut-off events. [2023-08-25 21:02:03,194 INFO L125 PetriNetUnfolderBase]: For 9260/9260 co-relation queries the response was YES. [2023-08-25 21:02:03,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5311 conditions, 867 events. 442/867 cut-off events. For 9260/9260 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4520 event pairs, 46 based on Foata normal form. 3/870 useless extension candidates. Maximal degree in co-relation 5272. Up to 437 conditions per place. [2023-08-25 21:02:03,203 INFO L140 encePairwiseOnDemand]: 270/278 looper letters, 127 selfloop transitions, 109 changer transitions 16/252 dead transitions. [2023-08-25 21:02:03,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 252 transitions, 2855 flow [2023-08-25 21:02:03,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-25 21:02:03,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-25 21:02:03,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3135 transitions. [2023-08-25 21:02:03,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888613247333168 [2023-08-25 21:02:03,207 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3135 transitions. [2023-08-25 21:02:03,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3135 transitions. [2023-08-25 21:02:03,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:03,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3135 transitions. [2023-08-25 21:02:03,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 108.10344827586206) internal successors, (3135), 29 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:03,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 278.0) internal successors, (8340), 30 states have internal predecessors, (8340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:03,247 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 278.0) internal successors, (8340), 30 states have internal predecessors, (8340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:03,247 INFO L175 Difference]: Start difference. First operand has 144 places, 140 transitions, 1465 flow. Second operand 29 states and 3135 transitions. [2023-08-25 21:02:03,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 252 transitions, 2855 flow [2023-08-25 21:02:03,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 252 transitions, 2625 flow, removed 29 selfloop flow, removed 14 redundant places. [2023-08-25 21:02:03,276 INFO L231 Difference]: Finished difference. Result has 168 places, 173 transitions, 2052 flow [2023-08-25 21:02:03,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=1281, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2052, PETRI_PLACES=168, PETRI_TRANSITIONS=173} [2023-08-25 21:02:03,278 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 132 predicate places. [2023-08-25 21:02:03,278 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 173 transitions, 2052 flow [2023-08-25 21:02:03,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 104.65217391304348) internal successors, (2407), 23 states have internal predecessors, (2407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:03,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:03,279 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:03,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-25 21:02:03,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-25 21:02:03,484 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:02:03,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:03,485 INFO L85 PathProgramCache]: Analyzing trace with hash -899200245, now seen corresponding path program 14 times [2023-08-25 21:02:03,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:03,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378081593] [2023-08-25 21:02:03,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:03,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:03,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:03,671 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:03,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:03,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378081593] [2023-08-25 21:02:03,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378081593] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:03,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558988496] [2023-08-25 21:02:03,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 21:02:03,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:03,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:03,673 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) [2023-08-25 21:02:03,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-25 21:02:03,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 21:02:03,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:03,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-25 21:02:03,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:03,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:03,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:04,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:04,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558988496] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:04,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:04,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-08-25 21:02:04,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625590143] [2023-08-25 21:02:04,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:04,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 21:02:04,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:04,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 21:02:04,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2023-08-25 21:02:04,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:02:04,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 173 transitions, 2052 flow. Second operand has 22 states, 22 states have (on average 104.77272727272727) internal successors, (2305), 22 states have internal predecessors, (2305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:04,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:04,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:02:04,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:04,838 INFO L124 PetriNetUnfolderBase]: 483/928 cut-off events. [2023-08-25 21:02:04,838 INFO L125 PetriNetUnfolderBase]: For 13836/13836 co-relation queries the response was YES. [2023-08-25 21:02:04,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6265 conditions, 928 events. 483/928 cut-off events. For 13836/13836 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4832 event pairs, 52 based on Foata normal form. 5/929 useless extension candidates. Maximal degree in co-relation 6214. Up to 504 conditions per place. [2023-08-25 21:02:04,849 INFO L140 encePairwiseOnDemand]: 270/278 looper letters, 110 selfloop transitions, 94 changer transitions 48/252 dead transitions. [2023-08-25 21:02:04,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 252 transitions, 3436 flow [2023-08-25 21:02:04,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-25 21:02:04,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-25 21:02:04,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2899 transitions. [2023-08-25 21:02:04,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3862243538502531 [2023-08-25 21:02:04,853 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2899 transitions. [2023-08-25 21:02:04,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2899 transitions. [2023-08-25 21:02:04,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:04,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2899 transitions. [2023-08-25 21:02:04,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 107.37037037037037) internal successors, (2899), 27 states have internal predecessors, (2899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:04,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 278.0) internal successors, (7784), 28 states have internal predecessors, (7784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:04,867 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 278.0) internal successors, (7784), 28 states have internal predecessors, (7784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:04,869 INFO L175 Difference]: Start difference. First operand has 168 places, 173 transitions, 2052 flow. Second operand 27 states and 2899 transitions. [2023-08-25 21:02:04,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 252 transitions, 3436 flow [2023-08-25 21:02:04,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 252 transitions, 3088 flow, removed 152 selfloop flow, removed 10 redundant places. [2023-08-25 21:02:04,925 INFO L231 Difference]: Finished difference. Result has 188 places, 167 transitions, 2158 flow [2023-08-25 21:02:04,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=1790, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2158, PETRI_PLACES=188, PETRI_TRANSITIONS=167} [2023-08-25 21:02:04,925 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 152 predicate places. [2023-08-25 21:02:04,925 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 167 transitions, 2158 flow [2023-08-25 21:02:04,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 104.77272727272727) internal successors, (2305), 22 states have internal predecessors, (2305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:04,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:04,926 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:04,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-25 21:02:05,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:05,133 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:02:05,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:05,133 INFO L85 PathProgramCache]: Analyzing trace with hash 54664865, now seen corresponding path program 15 times [2023-08-25 21:02:05,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:05,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240534349] [2023-08-25 21:02:05,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:05,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:05,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:05,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:05,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240534349] [2023-08-25 21:02:05,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240534349] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:05,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172825942] [2023-08-25 21:02:05,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 21:02:05,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:05,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:05,326 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) [2023-08-25 21:02:05,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-25 21:02:05,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 21:02:05,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:05,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-25 21:02:05,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:05,616 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:05,617 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:05,910 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:05,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172825942] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:05,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:05,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2023-08-25 21:02:05,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947681176] [2023-08-25 21:02:05,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:05,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-25 21:02:05,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:05,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-25 21:02:05,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2023-08-25 21:02:05,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:02:05,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 167 transitions, 2158 flow. Second operand has 23 states, 23 states have (on average 104.69565217391305) internal successors, (2408), 23 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:05,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:05,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:02:05,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:07,226 INFO L124 PetriNetUnfolderBase]: 533/1023 cut-off events. [2023-08-25 21:02:07,227 INFO L125 PetriNetUnfolderBase]: For 21997/21997 co-relation queries the response was YES. [2023-08-25 21:02:07,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7834 conditions, 1023 events. 533/1023 cut-off events. For 21997/21997 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5447 event pairs, 60 based on Foata normal form. 6/1029 useless extension candidates. Maximal degree in co-relation 7778. Up to 493 conditions per place. [2023-08-25 21:02:07,240 INFO L140 encePairwiseOnDemand]: 270/278 looper letters, 134 selfloop transitions, 127 changer transitions 38/299 dead transitions. [2023-08-25 21:02:07,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 299 transitions, 4386 flow [2023-08-25 21:02:07,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-25 21:02:07,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-08-25 21:02:07,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 4311 transitions. [2023-08-25 21:02:07,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3876798561151079 [2023-08-25 21:02:07,246 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 4311 transitions. [2023-08-25 21:02:07,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 4311 transitions. [2023-08-25 21:02:07,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:07,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 4311 transitions. [2023-08-25 21:02:07,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 107.775) internal successors, (4311), 40 states have internal predecessors, (4311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:07,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 278.0) internal successors, (11398), 41 states have internal predecessors, (11398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:07,260 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 278.0) internal successors, (11398), 41 states have internal predecessors, (11398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:07,260 INFO L175 Difference]: Start difference. First operand has 188 places, 167 transitions, 2158 flow. Second operand 40 states and 4311 transitions. [2023-08-25 21:02:07,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 299 transitions, 4386 flow [2023-08-25 21:02:07,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 299 transitions, 3718 flow, removed 276 selfloop flow, removed 22 redundant places. [2023-08-25 21:02:07,348 INFO L231 Difference]: Finished difference. Result has 198 places, 195 transitions, 2795 flow [2023-08-25 21:02:07,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=1824, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=2795, PETRI_PLACES=198, PETRI_TRANSITIONS=195} [2023-08-25 21:02:07,349 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 162 predicate places. [2023-08-25 21:02:07,349 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 195 transitions, 2795 flow [2023-08-25 21:02:07,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 104.69565217391305) internal successors, (2408), 23 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:07,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:07,349 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:07,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-25 21:02:07,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-25 21:02:07,555 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:02:07,556 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:07,556 INFO L85 PathProgramCache]: Analyzing trace with hash 184255715, now seen corresponding path program 16 times [2023-08-25 21:02:07,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:07,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106035666] [2023-08-25 21:02:07,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:07,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:07,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:07,743 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:07,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:07,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106035666] [2023-08-25 21:02:07,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106035666] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:07,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164564083] [2023-08-25 21:02:07,744 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 21:02:07,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:07,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:07,745 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) [2023-08-25 21:02:07,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-25 21:02:07,853 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 21:02:07,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:07,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-25 21:02:07,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:08,032 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:08,032 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:08,299 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:08,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164564083] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:08,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:08,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2023-08-25 21:02:08,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546782970] [2023-08-25 21:02:08,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:08,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-25 21:02:08,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:08,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-25 21:02:08,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2023-08-25 21:02:08,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:02:08,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 195 transitions, 2795 flow. Second operand has 23 states, 23 states have (on average 104.65217391304348) internal successors, (2407), 23 states have internal predecessors, (2407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:08,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:08,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:02:08,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:09,293 INFO L124 PetriNetUnfolderBase]: 507/985 cut-off events. [2023-08-25 21:02:09,293 INFO L125 PetriNetUnfolderBase]: For 23183/23183 co-relation queries the response was YES. [2023-08-25 21:02:09,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7881 conditions, 985 events. 507/985 cut-off events. For 23183/23183 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5207 event pairs, 66 based on Foata normal form. 2/987 useless extension candidates. Maximal degree in co-relation 7820. Up to 528 conditions per place. [2023-08-25 21:02:09,304 INFO L140 encePairwiseOnDemand]: 270/278 looper letters, 129 selfloop transitions, 121 changer transitions 21/271 dead transitions. [2023-08-25 21:02:09,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 271 transitions, 3927 flow [2023-08-25 21:02:09,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-25 21:02:09,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-25 21:02:09,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3554 transitions. [2023-08-25 21:02:09,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38739917157183346 [2023-08-25 21:02:09,308 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3554 transitions. [2023-08-25 21:02:09,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3554 transitions. [2023-08-25 21:02:09,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:09,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3554 transitions. [2023-08-25 21:02:09,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 107.6969696969697) internal successors, (3554), 33 states have internal predecessors, (3554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:09,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 278.0) internal successors, (9452), 34 states have internal predecessors, (9452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:09,320 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 278.0) internal successors, (9452), 34 states have internal predecessors, (9452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:09,320 INFO L175 Difference]: Start difference. First operand has 198 places, 195 transitions, 2795 flow. Second operand 33 states and 3554 transitions. [2023-08-25 21:02:09,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 271 transitions, 3927 flow [2023-08-25 21:02:09,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 271 transitions, 3368 flow, removed 229 selfloop flow, removed 23 redundant places. [2023-08-25 21:02:09,387 INFO L231 Difference]: Finished difference. Result has 199 places, 191 transitions, 2469 flow [2023-08-25 21:02:09,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=2255, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2469, PETRI_PLACES=199, PETRI_TRANSITIONS=191} [2023-08-25 21:02:09,388 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 163 predicate places. [2023-08-25 21:02:09,388 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 191 transitions, 2469 flow [2023-08-25 21:02:09,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 104.65217391304348) internal successors, (2407), 23 states have internal predecessors, (2407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:09,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:09,388 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:09,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-25 21:02:09,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:09,589 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:02:09,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:09,589 INFO L85 PathProgramCache]: Analyzing trace with hash -856829019, now seen corresponding path program 17 times [2023-08-25 21:02:09,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:09,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286871612] [2023-08-25 21:02:09,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:09,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:09,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:09,793 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:09,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:09,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286871612] [2023-08-25 21:02:09,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286871612] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:09,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711236764] [2023-08-25 21:02:09,794 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 21:02:09,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:09,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:09,795 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:09,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-25 21:02:09,884 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 21:02:09,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:09,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-25 21:02:09,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:10,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:10,073 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:10,452 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:10,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711236764] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:10,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:10,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-08-25 21:02:10,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660229004] [2023-08-25 21:02:10,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:10,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 21:02:10,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:10,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 21:02:10,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2023-08-25 21:02:10,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:02:10,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 191 transitions, 2469 flow. Second operand has 24 states, 24 states have (on average 104.66666666666667) internal successors, (2512), 24 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:10,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:10,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:02:10,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:11,114 INFO L124 PetriNetUnfolderBase]: 517/1009 cut-off events. [2023-08-25 21:02:11,115 INFO L125 PetriNetUnfolderBase]: For 21296/21296 co-relation queries the response was YES. [2023-08-25 21:02:11,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7861 conditions, 1009 events. 517/1009 cut-off events. For 21296/21296 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5416 event pairs, 76 based on Foata normal form. 3/1012 useless extension candidates. Maximal degree in co-relation 7802. Up to 801 conditions per place. [2023-08-25 21:02:11,129 INFO L140 encePairwiseOnDemand]: 270/278 looper letters, 186 selfloop transitions, 41 changer transitions 18/245 dead transitions. [2023-08-25 21:02:11,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 245 transitions, 3538 flow [2023-08-25 21:02:11,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-25 21:02:11,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-25 21:02:11,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1944 transitions. [2023-08-25 21:02:11,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38848920863309355 [2023-08-25 21:02:11,132 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1944 transitions. [2023-08-25 21:02:11,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1944 transitions. [2023-08-25 21:02:11,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:11,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1944 transitions. [2023-08-25 21:02:11,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 108.0) internal successors, (1944), 18 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:11,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 278.0) internal successors, (5282), 19 states have internal predecessors, (5282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:11,138 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 278.0) internal successors, (5282), 19 states have internal predecessors, (5282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:11,138 INFO L175 Difference]: Start difference. First operand has 199 places, 191 transitions, 2469 flow. Second operand 18 states and 1944 transitions. [2023-08-25 21:02:11,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 245 transitions, 3538 flow [2023-08-25 21:02:11,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 245 transitions, 3265 flow, removed 7 selfloop flow, removed 31 redundant places. [2023-08-25 21:02:11,230 INFO L231 Difference]: Finished difference. Result has 189 places, 195 transitions, 2462 flow [2023-08-25 21:02:11,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=2200, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2462, PETRI_PLACES=189, PETRI_TRANSITIONS=195} [2023-08-25 21:02:11,231 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 153 predicate places. [2023-08-25 21:02:11,231 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 195 transitions, 2462 flow [2023-08-25 21:02:11,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 104.66666666666667) internal successors, (2512), 24 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:11,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:11,232 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:11,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-25 21:02:11,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:11,439 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:02:11,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:11,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1387327011, now seen corresponding path program 18 times [2023-08-25 21:02:11,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:11,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500111708] [2023-08-25 21:02:11,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:11,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:11,618 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:11,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:11,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500111708] [2023-08-25 21:02:11,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500111708] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:11,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933059389] [2023-08-25 21:02:11,619 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 21:02:11,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:11,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:11,620 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:11,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-25 21:02:11,705 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-25 21:02:11,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:11,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-25 21:02:11,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:11,892 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:11,892 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:12,266 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:12,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933059389] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:12,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:12,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-08-25 21:02:12,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12615346] [2023-08-25 21:02:12,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:12,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 21:02:12,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:12,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 21:02:12,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2023-08-25 21:02:12,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:02:12,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 195 transitions, 2462 flow. Second operand has 24 states, 24 states have (on average 104.66666666666667) internal successors, (2512), 24 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:12,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:12,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:02:12,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:13,037 INFO L124 PetriNetUnfolderBase]: 565/1111 cut-off events. [2023-08-25 21:02:13,037 INFO L125 PetriNetUnfolderBase]: For 32535/32535 co-relation queries the response was YES. [2023-08-25 21:02:13,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9195 conditions, 1111 events. 565/1111 cut-off events. For 32535/32535 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6165 event pairs, 80 based on Foata normal form. 3/1110 useless extension candidates. Maximal degree in co-relation 9131. Up to 827 conditions per place. [2023-08-25 21:02:13,047 INFO L140 encePairwiseOnDemand]: 270/278 looper letters, 202 selfloop transitions, 57 changer transitions 17/276 dead transitions. [2023-08-25 21:02:13,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 276 transitions, 4204 flow [2023-08-25 21:02:13,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-25 21:02:13,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-25 21:02:13,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2487 transitions. [2023-08-25 21:02:13,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38895839849859243 [2023-08-25 21:02:13,051 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2487 transitions. [2023-08-25 21:02:13,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2487 transitions. [2023-08-25 21:02:13,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:13,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2487 transitions. [2023-08-25 21:02:13,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 108.1304347826087) internal successors, (2487), 23 states have internal predecessors, (2487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:13,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 278.0) internal successors, (6672), 24 states have internal predecessors, (6672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:13,059 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 278.0) internal successors, (6672), 24 states have internal predecessors, (6672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:13,059 INFO L175 Difference]: Start difference. First operand has 189 places, 195 transitions, 2462 flow. Second operand 23 states and 2487 transitions. [2023-08-25 21:02:13,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 276 transitions, 4204 flow [2023-08-25 21:02:13,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 276 transitions, 3923 flow, removed 86 selfloop flow, removed 15 redundant places. [2023-08-25 21:02:13,166 INFO L231 Difference]: Finished difference. Result has 202 places, 211 transitions, 2882 flow [2023-08-25 21:02:13,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=2217, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2882, PETRI_PLACES=202, PETRI_TRANSITIONS=211} [2023-08-25 21:02:13,166 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 166 predicate places. [2023-08-25 21:02:13,166 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 211 transitions, 2882 flow [2023-08-25 21:02:13,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 104.66666666666667) internal successors, (2512), 24 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:13,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:13,167 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:13,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-25 21:02:13,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:13,368 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:02:13,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:13,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1516917861, now seen corresponding path program 19 times [2023-08-25 21:02:13,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:13,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764480428] [2023-08-25 21:02:13,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:13,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:13,566 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:13,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:13,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764480428] [2023-08-25 21:02:13,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764480428] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:13,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789610469] [2023-08-25 21:02:13,567 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 21:02:13,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:13,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:13,568 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:13,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-25 21:02:13,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:13,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-25 21:02:13,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:13,847 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:13,847 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:14,217 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:14,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789610469] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:14,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:14,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-08-25 21:02:14,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450733852] [2023-08-25 21:02:14,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:14,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 21:02:14,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:14,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 21:02:14,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2023-08-25 21:02:14,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:02:14,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 211 transitions, 2882 flow. Second operand has 24 states, 24 states have (on average 104.625) internal successors, (2511), 24 states have internal predecessors, (2511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:14,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:14,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:02:14,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:14,990 INFO L124 PetriNetUnfolderBase]: 570/1128 cut-off events. [2023-08-25 21:02:14,990 INFO L125 PetriNetUnfolderBase]: For 39833/39833 co-relation queries the response was YES. [2023-08-25 21:02:14,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9751 conditions, 1128 events. 570/1128 cut-off events. For 39833/39833 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6308 event pairs, 86 based on Foata normal form. 2/1126 useless extension candidates. Maximal degree in co-relation 9683. Up to 872 conditions per place. [2023-08-25 21:02:14,999 INFO L140 encePairwiseOnDemand]: 270/278 looper letters, 191 selfloop transitions, 57 changer transitions 23/271 dead transitions. [2023-08-25 21:02:15,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 271 transitions, 4223 flow [2023-08-25 21:02:15,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-25 21:02:15,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-25 21:02:15,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2268 transitions. [2023-08-25 21:02:15,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38848920863309355 [2023-08-25 21:02:15,002 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2268 transitions. [2023-08-25 21:02:15,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2268 transitions. [2023-08-25 21:02:15,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:15,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2268 transitions. [2023-08-25 21:02:15,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 108.0) internal successors, (2268), 21 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:15,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 278.0) internal successors, (6116), 22 states have internal predecessors, (6116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:15,009 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 278.0) internal successors, (6116), 22 states have internal predecessors, (6116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:15,009 INFO L175 Difference]: Start difference. First operand has 202 places, 211 transitions, 2882 flow. Second operand 21 states and 2268 transitions. [2023-08-25 21:02:15,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 271 transitions, 4223 flow [2023-08-25 21:02:15,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 271 transitions, 3808 flow, removed 178 selfloop flow, removed 12 redundant places. [2023-08-25 21:02:15,123 INFO L231 Difference]: Finished difference. Result has 211 places, 213 transitions, 2761 flow [2023-08-25 21:02:15,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=2521, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2761, PETRI_PLACES=211, PETRI_TRANSITIONS=213} [2023-08-25 21:02:15,124 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 175 predicate places. [2023-08-25 21:02:15,124 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 213 transitions, 2761 flow [2023-08-25 21:02:15,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 104.625) internal successors, (2511), 24 states have internal predecessors, (2511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:15,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:15,125 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:15,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-25 21:02:15,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:15,325 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:02:15,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:15,326 INFO L85 PathProgramCache]: Analyzing trace with hash 729995497, now seen corresponding path program 20 times [2023-08-25 21:02:15,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:15,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946863446] [2023-08-25 21:02:15,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:15,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:15,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:15,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:15,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946863446] [2023-08-25 21:02:15,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946863446] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:15,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007986761] [2023-08-25 21:02:15,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 21:02:15,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:15,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:15,501 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:15,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-25 21:02:15,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 21:02:15,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:15,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-25 21:02:15,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:15,786 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:15,787 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:16,075 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:16,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007986761] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:16,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:16,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2023-08-25 21:02:16,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251479294] [2023-08-25 21:02:16,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:16,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-25 21:02:16,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:16,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-25 21:02:16,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2023-08-25 21:02:16,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:02:16,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 213 transitions, 2761 flow. Second operand has 23 states, 23 states have (on average 104.69565217391305) internal successors, (2408), 23 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:16,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:16,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:02:16,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:16,563 INFO L124 PetriNetUnfolderBase]: 571/1123 cut-off events. [2023-08-25 21:02:16,563 INFO L125 PetriNetUnfolderBase]: For 36792/36792 co-relation queries the response was YES. [2023-08-25 21:02:16,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9369 conditions, 1123 events. 571/1123 cut-off events. For 36792/36792 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6230 event pairs, 90 based on Foata normal form. 2/1121 useless extension candidates. Maximal degree in co-relation 9298. Up to 911 conditions per place. [2023-08-25 21:02:16,573 INFO L140 encePairwiseOnDemand]: 270/278 looper letters, 177 selfloop transitions, 54 changer transitions 22/253 dead transitions. [2023-08-25 21:02:16,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 253 transitions, 3863 flow [2023-08-25 21:02:16,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-25 21:02:16,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-25 21:02:16,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1718 transitions. [2023-08-25 21:02:16,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3862410071942446 [2023-08-25 21:02:16,583 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1718 transitions. [2023-08-25 21:02:16,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1718 transitions. [2023-08-25 21:02:16,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:16,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1718 transitions. [2023-08-25 21:02:16,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 107.375) internal successors, (1718), 16 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:16,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 278.0) internal successors, (4726), 17 states have internal predecessors, (4726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:16,588 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 278.0) internal successors, (4726), 17 states have internal predecessors, (4726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:16,588 INFO L175 Difference]: Start difference. First operand has 211 places, 213 transitions, 2761 flow. Second operand 16 states and 1718 transitions. [2023-08-25 21:02:16,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 253 transitions, 3863 flow [2023-08-25 21:02:16,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 253 transitions, 3603 flow, removed 79 selfloop flow, removed 14 redundant places. [2023-08-25 21:02:16,739 INFO L231 Difference]: Finished difference. Result has 214 places, 211 transitions, 2764 flow [2023-08-25 21:02:16,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=2501, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2764, PETRI_PLACES=214, PETRI_TRANSITIONS=211} [2023-08-25 21:02:16,739 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 178 predicate places. [2023-08-25 21:02:16,739 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 211 transitions, 2764 flow [2023-08-25 21:02:16,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 104.69565217391305) internal successors, (2408), 23 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:16,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:16,740 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:16,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-25 21:02:16,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-25 21:02:16,941 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:02:16,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:16,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1978280397, now seen corresponding path program 21 times [2023-08-25 21:02:16,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:16,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537944605] [2023-08-25 21:02:16,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:16,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:16,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:17,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:17,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:17,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537944605] [2023-08-25 21:02:17,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537944605] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:17,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502575678] [2023-08-25 21:02:17,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 21:02:17,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:17,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:17,121 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:17,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-25 21:02:17,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 21:02:17,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:17,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-25 21:02:17,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:17,386 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:17,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:17,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:17,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502575678] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:17,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:17,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-08-25 21:02:17,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655581859] [2023-08-25 21:02:17,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:17,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 21:02:17,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:17,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 21:02:17,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2023-08-25 21:02:17,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:02:17,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 211 transitions, 2764 flow. Second operand has 24 states, 24 states have (on average 104.70833333333333) internal successors, (2513), 24 states have internal predecessors, (2513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:17,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:17,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:02:17,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:18,664 INFO L124 PetriNetUnfolderBase]: 645/1275 cut-off events. [2023-08-25 21:02:18,664 INFO L125 PetriNetUnfolderBase]: For 60103/60103 co-relation queries the response was YES. [2023-08-25 21:02:18,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11902 conditions, 1275 events. 645/1275 cut-off events. For 60103/60103 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7341 event pairs, 98 based on Foata normal form. 4/1275 useless extension candidates. Maximal degree in co-relation 11826. Up to 883 conditions per place. [2023-08-25 21:02:18,676 INFO L140 encePairwiseOnDemand]: 270/278 looper letters, 197 selfloop transitions, 88 changer transitions 28/313 dead transitions. [2023-08-25 21:02:18,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 313 transitions, 5266 flow [2023-08-25 21:02:18,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-25 21:02:18,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-25 21:02:18,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2812 transitions. [2023-08-25 21:02:18,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38904261206419477 [2023-08-25 21:02:18,680 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2812 transitions. [2023-08-25 21:02:18,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2812 transitions. [2023-08-25 21:02:18,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:18,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2812 transitions. [2023-08-25 21:02:18,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 108.15384615384616) internal successors, (2812), 26 states have internal predecessors, (2812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:18,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 278.0) internal successors, (7506), 27 states have internal predecessors, (7506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:18,689 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 278.0) internal successors, (7506), 27 states have internal predecessors, (7506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:18,689 INFO L175 Difference]: Start difference. First operand has 214 places, 211 transitions, 2764 flow. Second operand 26 states and 2812 transitions. [2023-08-25 21:02:18,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 313 transitions, 5266 flow [2023-08-25 21:02:18,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 313 transitions, 4811 flow, removed 191 selfloop flow, removed 13 redundant places. [2023-08-25 21:02:18,876 INFO L231 Difference]: Finished difference. Result has 229 places, 240 transitions, 3598 flow [2023-08-25 21:02:18,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=2505, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3598, PETRI_PLACES=229, PETRI_TRANSITIONS=240} [2023-08-25 21:02:18,876 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 193 predicate places. [2023-08-25 21:02:18,877 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 240 transitions, 3598 flow [2023-08-25 21:02:18,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 104.70833333333333) internal successors, (2513), 24 states have internal predecessors, (2513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:18,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:18,877 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:18,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-25 21:02:19,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-25 21:02:19,083 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:02:19,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:19,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1849006677, now seen corresponding path program 22 times [2023-08-25 21:02:19,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:19,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461830663] [2023-08-25 21:02:19,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:19,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:19,250 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:19,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:19,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461830663] [2023-08-25 21:02:19,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461830663] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:19,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936143208] [2023-08-25 21:02:19,250 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 21:02:19,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:19,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:19,251 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:19,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-25 21:02:19,368 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 21:02:19,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:19,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-25 21:02:19,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:19,544 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:19,544 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:19,853 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:19,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936143208] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:19,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:19,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-08-25 21:02:19,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579611384] [2023-08-25 21:02:19,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:19,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 21:02:19,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:19,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 21:02:19,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2023-08-25 21:02:19,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:02:19,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 240 transitions, 3598 flow. Second operand has 24 states, 24 states have (on average 104.625) internal successors, (2511), 24 states have internal predecessors, (2511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:19,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:19,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:02:19,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:20,682 INFO L124 PetriNetUnfolderBase]: 634/1268 cut-off events. [2023-08-25 21:02:20,682 INFO L125 PetriNetUnfolderBase]: For 71527/71527 co-relation queries the response was YES. [2023-08-25 21:02:20,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12457 conditions, 1268 events. 634/1268 cut-off events. For 71527/71527 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7380 event pairs, 104 based on Foata normal form. 2/1266 useless extension candidates. Maximal degree in co-relation 12373. Up to 922 conditions per place. [2023-08-25 21:02:20,695 INFO L140 encePairwiseOnDemand]: 270/278 looper letters, 192 selfloop transitions, 82 changer transitions 21/295 dead transitions. [2023-08-25 21:02:20,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 295 transitions, 4888 flow [2023-08-25 21:02:20,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-25 21:02:20,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-25 21:02:20,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2267 transitions. [2023-08-25 21:02:20,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3883179170948955 [2023-08-25 21:02:20,703 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2267 transitions. [2023-08-25 21:02:20,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2267 transitions. [2023-08-25 21:02:20,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:20,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2267 transitions. [2023-08-25 21:02:20,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 107.95238095238095) internal successors, (2267), 21 states have internal predecessors, (2267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:20,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 278.0) internal successors, (6116), 22 states have internal predecessors, (6116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:20,710 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 278.0) internal successors, (6116), 22 states have internal predecessors, (6116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:20,710 INFO L175 Difference]: Start difference. First operand has 229 places, 240 transitions, 3598 flow. Second operand 21 states and 2267 transitions. [2023-08-25 21:02:20,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 295 transitions, 4888 flow [2023-08-25 21:02:20,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 295 transitions, 4304 flow, removed 275 selfloop flow, removed 7 redundant places. [2023-08-25 21:02:20,896 INFO L231 Difference]: Finished difference. Result has 238 places, 236 transitions, 3171 flow [2023-08-25 21:02:20,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=3039, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3171, PETRI_PLACES=238, PETRI_TRANSITIONS=236} [2023-08-25 21:02:20,897 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 202 predicate places. [2023-08-25 21:02:20,897 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 236 transitions, 3171 flow [2023-08-25 21:02:20,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 104.625) internal successors, (2511), 24 states have internal predecessors, (2511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:20,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:20,898 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:20,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-08-25 21:02:21,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:21,098 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:02:21,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:21,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1220949471, now seen corresponding path program 23 times [2023-08-25 21:02:21,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:21,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734322086] [2023-08-25 21:02:21,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:21,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:21,288 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:21,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:21,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734322086] [2023-08-25 21:02:21,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734322086] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:21,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590427881] [2023-08-25 21:02:21,289 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 21:02:21,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:21,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:21,293 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:21,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-25 21:02:21,403 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 21:02:21,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:21,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-25 21:02:21,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:21,571 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:21,571 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:21,807 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:21,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590427881] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:21,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:21,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-08-25 21:02:21,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773772329] [2023-08-25 21:02:21,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:21,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-25 21:02:21,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:21,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-25 21:02:21,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2023-08-25 21:02:21,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:02:21,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 236 transitions, 3171 flow. Second operand has 26 states, 26 states have (on average 104.65384615384616) internal successors, (2721), 26 states have internal predecessors, (2721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:21,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:21,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:02:21,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:22,478 INFO L124 PetriNetUnfolderBase]: 672/1331 cut-off events. [2023-08-25 21:02:22,478 INFO L125 PetriNetUnfolderBase]: For 68663/68663 co-relation queries the response was YES. [2023-08-25 21:02:22,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12768 conditions, 1331 events. 672/1331 cut-off events. For 68663/68663 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 7874 event pairs, 24 based on Foata normal form. 4/1331 useless extension candidates. Maximal degree in co-relation 12683. Up to 444 conditions per place. [2023-08-25 21:02:22,489 INFO L140 encePairwiseOnDemand]: 270/278 looper letters, 137 selfloop transitions, 142 changer transitions 44/323 dead transitions. [2023-08-25 21:02:22,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 323 transitions, 4842 flow [2023-08-25 21:02:22,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-25 21:02:22,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-25 21:02:22,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2390 transitions. [2023-08-25 21:02:22,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3907782864617397 [2023-08-25 21:02:22,495 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2390 transitions. [2023-08-25 21:02:22,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2390 transitions. [2023-08-25 21:02:22,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:22,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2390 transitions. [2023-08-25 21:02:22,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 108.63636363636364) internal successors, (2390), 22 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:22,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 278.0) internal successors, (6394), 23 states have internal predecessors, (6394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:22,502 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 278.0) internal successors, (6394), 23 states have internal predecessors, (6394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:22,502 INFO L175 Difference]: Start difference. First operand has 238 places, 236 transitions, 3171 flow. Second operand 22 states and 2390 transitions. [2023-08-25 21:02:22,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 323 transitions, 4842 flow [2023-08-25 21:02:22,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 323 transitions, 4643 flow, removed 15 selfloop flow, removed 18 redundant places. [2023-08-25 21:02:22,688 INFO L231 Difference]: Finished difference. Result has 243 places, 241 transitions, 3585 flow [2023-08-25 21:02:22,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=2977, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3585, PETRI_PLACES=243, PETRI_TRANSITIONS=241} [2023-08-25 21:02:22,689 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 207 predicate places. [2023-08-25 21:02:22,689 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 241 transitions, 3585 flow [2023-08-25 21:02:22,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 104.65384615384616) internal successors, (2721), 26 states have internal predecessors, (2721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:22,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:22,689 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:22,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-25 21:02:22,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:22,890 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:02:22,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:22,890 INFO L85 PathProgramCache]: Analyzing trace with hash 380839009, now seen corresponding path program 24 times [2023-08-25 21:02:22,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:22,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531032610] [2023-08-25 21:02:22,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:22,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:23,069 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:23,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:23,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531032610] [2023-08-25 21:02:23,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531032610] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:23,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008161397] [2023-08-25 21:02:23,069 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 21:02:23,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:23,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:23,071 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:23,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-25 21:02:23,197 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-25 21:02:23,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:23,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-25 21:02:23,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:23,343 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:23,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:23,598 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:23,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008161397] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:23,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:23,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-08-25 21:02:23,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330823500] [2023-08-25 21:02:23,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:23,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-25 21:02:23,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:23,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-25 21:02:23,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2023-08-25 21:02:23,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:02:23,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 241 transitions, 3585 flow. Second operand has 26 states, 26 states have (on average 104.65384615384616) internal successors, (2721), 26 states have internal predecessors, (2721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:23,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:23,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:02:23,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:24,256 INFO L124 PetriNetUnfolderBase]: 669/1323 cut-off events. [2023-08-25 21:02:24,256 INFO L125 PetriNetUnfolderBase]: For 80581/80581 co-relation queries the response was YES. [2023-08-25 21:02:24,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14107 conditions, 1323 events. 669/1323 cut-off events. For 80581/80581 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 7829 event pairs, 28 based on Foata normal form. 2/1321 useless extension candidates. Maximal degree in co-relation 14018. Up to 451 conditions per place. [2023-08-25 21:02:24,268 INFO L140 encePairwiseOnDemand]: 270/278 looper letters, 134 selfloop transitions, 145 changer transitions 45/324 dead transitions. [2023-08-25 21:02:24,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 324 transitions, 5510 flow [2023-08-25 21:02:24,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-25 21:02:24,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-25 21:02:24,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2709 transitions. [2023-08-25 21:02:24,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897841726618705 [2023-08-25 21:02:24,271 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2709 transitions. [2023-08-25 21:02:24,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2709 transitions. [2023-08-25 21:02:24,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:24,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2709 transitions. [2023-08-25 21:02:24,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 108.36) internal successors, (2709), 25 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:24,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 278.0) internal successors, (7228), 26 states have internal predecessors, (7228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:24,280 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 278.0) internal successors, (7228), 26 states have internal predecessors, (7228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:24,280 INFO L175 Difference]: Start difference. First operand has 243 places, 241 transitions, 3585 flow. Second operand 25 states and 2709 transitions. [2023-08-25 21:02:24,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 324 transitions, 5510 flow [2023-08-25 21:02:24,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 324 transitions, 5164 flow, removed 114 selfloop flow, removed 15 redundant places. [2023-08-25 21:02:24,553 INFO L231 Difference]: Finished difference. Result has 249 places, 234 transitions, 3743 flow [2023-08-25 21:02:24,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=3347, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3743, PETRI_PLACES=249, PETRI_TRANSITIONS=234} [2023-08-25 21:02:24,554 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 213 predicate places. [2023-08-25 21:02:24,554 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 234 transitions, 3743 flow [2023-08-25 21:02:24,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 104.65384615384616) internal successors, (2721), 26 states have internal predecessors, (2721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:24,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:24,555 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:24,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-25 21:02:24,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-25 21:02:24,755 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:02:24,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:24,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1090835653, now seen corresponding path program 25 times [2023-08-25 21:02:24,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:24,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912741257] [2023-08-25 21:02:24,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:24,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:24,935 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:24,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:24,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912741257] [2023-08-25 21:02:24,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912741257] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:24,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219641836] [2023-08-25 21:02:24,936 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 21:02:24,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:24,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:24,936 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:24,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-25 21:02:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:25,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-25 21:02:25,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:25,209 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:25,209 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:25,448 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:25,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219641836] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:25,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:25,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-08-25 21:02:25,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311167148] [2023-08-25 21:02:25,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:25,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-25 21:02:25,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:25,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-25 21:02:25,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2023-08-25 21:02:25,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:02:25,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 234 transitions, 3743 flow. Second operand has 26 states, 26 states have (on average 104.57692307692308) internal successors, (2719), 26 states have internal predecessors, (2719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:25,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:25,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:02:25,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:26,312 INFO L124 PetriNetUnfolderBase]: 703/1407 cut-off events. [2023-08-25 21:02:26,312 INFO L125 PetriNetUnfolderBase]: For 98716/98716 co-relation queries the response was YES. [2023-08-25 21:02:26,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16020 conditions, 1407 events. 703/1407 cut-off events. For 98716/98716 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 8487 event pairs, 34 based on Foata normal form. 3/1408 useless extension candidates. Maximal degree in co-relation 15932. Up to 432 conditions per place. [2023-08-25 21:02:26,325 INFO L140 encePairwiseOnDemand]: 270/278 looper letters, 157 selfloop transitions, 156 changer transitions 24/337 dead transitions. [2023-08-25 21:02:26,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 337 transitions, 6334 flow [2023-08-25 21:02:26,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-25 21:02:26,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-25 21:02:26,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2929 transitions. [2023-08-25 21:02:26,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39022115640820676 [2023-08-25 21:02:26,328 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2929 transitions. [2023-08-25 21:02:26,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2929 transitions. [2023-08-25 21:02:26,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:26,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2929 transitions. [2023-08-25 21:02:26,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 108.48148148148148) internal successors, (2929), 27 states have internal predecessors, (2929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:26,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 278.0) internal successors, (7784), 28 states have internal predecessors, (7784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:26,335 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 278.0) internal successors, (7784), 28 states have internal predecessors, (7784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:26,335 INFO L175 Difference]: Start difference. First operand has 249 places, 234 transitions, 3743 flow. Second operand 27 states and 2929 transitions. [2023-08-25 21:02:26,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 337 transitions, 6334 flow [2023-08-25 21:02:26,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 337 transitions, 5617 flow, removed 223 selfloop flow, removed 21 redundant places. [2023-08-25 21:02:26,522 INFO L231 Difference]: Finished difference. Result has 253 places, 246 transitions, 4197 flow [2023-08-25 21:02:26,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=3272, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=4197, PETRI_PLACES=253, PETRI_TRANSITIONS=246} [2023-08-25 21:02:26,523 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 217 predicate places. [2023-08-25 21:02:26,523 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 246 transitions, 4197 flow [2023-08-25 21:02:26,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 104.57692307692308) internal successors, (2719), 26 states have internal predecessors, (2719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:26,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:26,524 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:26,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-08-25 21:02:26,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-25 21:02:26,730 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:02:26,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:26,730 INFO L85 PathProgramCache]: Analyzing trace with hash 870026013, now seen corresponding path program 26 times [2023-08-25 21:02:26,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:26,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707432461] [2023-08-25 21:02:26,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:26,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:26,909 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:26,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:26,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707432461] [2023-08-25 21:02:26,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707432461] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:26,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736297230] [2023-08-25 21:02:26,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 21:02:26,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:26,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:26,910 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:26,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-25 21:02:27,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 21:02:27,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:27,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-25 21:02:27,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:27,177 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:27,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:27,437 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:27,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736297230] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:27,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:27,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-08-25 21:02:27,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56864151] [2023-08-25 21:02:27,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:27,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-25 21:02:27,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:27,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-25 21:02:27,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2023-08-25 21:02:27,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:02:27,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 246 transitions, 4197 flow. Second operand has 26 states, 26 states have (on average 104.65384615384616) internal successors, (2721), 26 states have internal predecessors, (2721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:27,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:27,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:02:27,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:28,161 INFO L124 PetriNetUnfolderBase]: 688/1384 cut-off events. [2023-08-25 21:02:28,161 INFO L125 PetriNetUnfolderBase]: For 86740/86740 co-relation queries the response was YES. [2023-08-25 21:02:28,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15774 conditions, 1384 events. 688/1384 cut-off events. For 86740/86740 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 8375 event pairs, 10 based on Foata normal form. 4/1386 useless extension candidates. Maximal degree in co-relation 15682. Up to 432 conditions per place. [2023-08-25 21:02:28,175 INFO L140 encePairwiseOnDemand]: 270/278 looper letters, 145 selfloop transitions, 139 changer transitions 50/334 dead transitions. [2023-08-25 21:02:28,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 334 transitions, 6251 flow [2023-08-25 21:02:28,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-25 21:02:28,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-25 21:02:28,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2704 transitions. [2023-08-25 21:02:28,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3890647482014388 [2023-08-25 21:02:28,177 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2704 transitions. [2023-08-25 21:02:28,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2704 transitions. [2023-08-25 21:02:28,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:28,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2704 transitions. [2023-08-25 21:02:28,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 108.16) internal successors, (2704), 25 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:28,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 278.0) internal successors, (7228), 26 states have internal predecessors, (7228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:28,185 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 278.0) internal successors, (7228), 26 states have internal predecessors, (7228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:28,185 INFO L175 Difference]: Start difference. First operand has 253 places, 246 transitions, 4197 flow. Second operand 25 states and 2704 transitions. [2023-08-25 21:02:28,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 334 transitions, 6251 flow [2023-08-25 21:02:28,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 334 transitions, 5670 flow, removed 192 selfloop flow, removed 20 redundant places. [2023-08-25 21:02:28,390 INFO L231 Difference]: Finished difference. Result has 259 places, 235 transitions, 3938 flow [2023-08-25 21:02:28,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=3691, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3938, PETRI_PLACES=259, PETRI_TRANSITIONS=235} [2023-08-25 21:02:28,391 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 223 predicate places. [2023-08-25 21:02:28,391 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 235 transitions, 3938 flow [2023-08-25 21:02:28,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 104.65384615384616) internal successors, (2721), 26 states have internal predecessors, (2721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:28,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:28,392 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:28,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-08-25 21:02:28,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-25 21:02:28,593 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:02:28,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:28,594 INFO L85 PathProgramCache]: Analyzing trace with hash -2095721263, now seen corresponding path program 27 times [2023-08-25 21:02:28,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:28,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453218453] [2023-08-25 21:02:28,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:28,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:28,810 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:28,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:28,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453218453] [2023-08-25 21:02:28,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453218453] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:28,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998863056] [2023-08-25 21:02:28,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 21:02:28,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:28,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:28,812 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:28,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-25 21:02:28,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-25 21:02:28,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:28,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-25 21:02:28,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:29,056 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:29,056 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:29,280 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:29,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998863056] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:29,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:29,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 23 [2023-08-25 21:02:29,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633223864] [2023-08-25 21:02:29,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:29,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-25 21:02:29,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:29,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-25 21:02:29,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2023-08-25 21:02:29,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:02:29,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 235 transitions, 3938 flow. Second operand has 25 states, 25 states have (on average 104.68) internal successors, (2617), 25 states have internal predecessors, (2617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:29,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:29,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:02:29,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:30,411 INFO L124 PetriNetUnfolderBase]: 663/1359 cut-off events. [2023-08-25 21:02:30,411 INFO L125 PetriNetUnfolderBase]: For 81972/81972 co-relation queries the response was YES. [2023-08-25 21:02:30,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14679 conditions, 1359 events. 663/1359 cut-off events. For 81972/81972 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 8264 event pairs, 32 based on Foata normal form. 7/1362 useless extension candidates. Maximal degree in co-relation 14584. Up to 361 conditions per place. [2023-08-25 21:02:30,425 INFO L140 encePairwiseOnDemand]: 270/278 looper letters, 184 selfloop transitions, 174 changer transitions 18/376 dead transitions. [2023-08-25 21:02:30,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 376 transitions, 7683 flow [2023-08-25 21:02:30,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-25 21:02:30,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-25 21:02:30,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3869 transitions. [2023-08-25 21:02:30,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38659072741806555 [2023-08-25 21:02:30,429 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3869 transitions. [2023-08-25 21:02:30,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3869 transitions. [2023-08-25 21:02:30,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:30,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3869 transitions. [2023-08-25 21:02:30,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 107.47222222222223) internal successors, (3869), 36 states have internal predecessors, (3869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:30,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 278.0) internal successors, (10286), 37 states have internal predecessors, (10286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:30,440 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 278.0) internal successors, (10286), 37 states have internal predecessors, (10286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:30,441 INFO L175 Difference]: Start difference. First operand has 259 places, 235 transitions, 3938 flow. Second operand 36 states and 3869 transitions. [2023-08-25 21:02:30,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 376 transitions, 7683 flow [2023-08-25 21:02:30,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 376 transitions, 7035 flow, removed 156 selfloop flow, removed 24 redundant places. [2023-08-25 21:02:30,672 INFO L231 Difference]: Finished difference. Result has 268 places, 280 transitions, 5379 flow [2023-08-25 21:02:30,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=3537, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=5379, PETRI_PLACES=268, PETRI_TRANSITIONS=280} [2023-08-25 21:02:30,673 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 232 predicate places. [2023-08-25 21:02:30,673 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 280 transitions, 5379 flow [2023-08-25 21:02:30,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 104.68) internal successors, (2617), 25 states have internal predecessors, (2617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:30,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:30,674 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:30,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-08-25 21:02:30,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:30,879 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:02:30,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:30,880 INFO L85 PathProgramCache]: Analyzing trace with hash -357942525, now seen corresponding path program 28 times [2023-08-25 21:02:30,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:30,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116501044] [2023-08-25 21:02:30,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:30,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:31,071 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:31,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:31,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116501044] [2023-08-25 21:02:31,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116501044] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:31,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172058905] [2023-08-25 21:02:31,072 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 21:02:31,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:31,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:31,073 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:31,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-25 21:02:31,175 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 21:02:31,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:31,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-25 21:02:31,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:31,312 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:31,313 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:31,555 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:31,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172058905] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:31,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:31,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 23 [2023-08-25 21:02:31,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94301324] [2023-08-25 21:02:31,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:31,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-25 21:02:31,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:31,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-25 21:02:31,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2023-08-25 21:02:31,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:02:31,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 280 transitions, 5379 flow. Second operand has 25 states, 25 states have (on average 104.72) internal successors, (2618), 25 states have internal predecessors, (2618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:31,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:31,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:02:31,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:32,889 INFO L124 PetriNetUnfolderBase]: 669/1343 cut-off events. [2023-08-25 21:02:32,890 INFO L125 PetriNetUnfolderBase]: For 83975/83975 co-relation queries the response was YES. [2023-08-25 21:02:32,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14505 conditions, 1343 events. 669/1343 cut-off events. For 83975/83975 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 7980 event pairs, 30 based on Foata normal form. 7/1350 useless extension candidates. Maximal degree in co-relation 14408. Up to 356 conditions per place. [2023-08-25 21:02:32,901 INFO L140 encePairwiseOnDemand]: 270/278 looper letters, 194 selfloop transitions, 168 changer transitions 19/381 dead transitions. [2023-08-25 21:02:32,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 381 transitions, 7637 flow [2023-08-25 21:02:32,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-25 21:02:32,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-08-25 21:02:32,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 4296 transitions. [2023-08-25 21:02:32,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38633093525179857 [2023-08-25 21:02:32,904 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 4296 transitions. [2023-08-25 21:02:32,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 4296 transitions. [2023-08-25 21:02:32,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:32,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 4296 transitions. [2023-08-25 21:02:32,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 107.4) internal successors, (4296), 40 states have internal predecessors, (4296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:32,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 278.0) internal successors, (11398), 41 states have internal predecessors, (11398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:32,912 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 278.0) internal successors, (11398), 41 states have internal predecessors, (11398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:32,912 INFO L175 Difference]: Start difference. First operand has 268 places, 280 transitions, 5379 flow. Second operand 40 states and 4296 transitions. [2023-08-25 21:02:32,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 381 transitions, 7637 flow [2023-08-25 21:02:33,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 381 transitions, 6457 flow, removed 508 selfloop flow, removed 29 redundant places. [2023-08-25 21:02:33,143 INFO L231 Difference]: Finished difference. Result has 278 places, 283 transitions, 4737 flow [2023-08-25 21:02:33,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=4244, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=4737, PETRI_PLACES=278, PETRI_TRANSITIONS=283} [2023-08-25 21:02:33,143 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 242 predicate places. [2023-08-25 21:02:33,143 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 283 transitions, 4737 flow [2023-08-25 21:02:33,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 104.72) internal successors, (2618), 25 states have internal predecessors, (2618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:33,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:33,144 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:33,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-08-25 21:02:33,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:33,348 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:02:33,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:33,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1722590802, now seen corresponding path program 29 times [2023-08-25 21:02:33,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:33,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18426754] [2023-08-25 21:02:33,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:33,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:33,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:33,522 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:33,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:33,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18426754] [2023-08-25 21:02:33,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18426754] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:33,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267329469] [2023-08-25 21:02:33,522 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 21:02:33,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:33,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:33,523 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:33,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-25 21:02:33,624 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-25 21:02:33,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:33,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-25 21:02:33,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:33,781 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:33,781 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:34,176 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:34,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267329469] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:34,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:34,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-08-25 21:02:34,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673752615] [2023-08-25 21:02:34,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:34,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-25 21:02:34,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:34,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-25 21:02:34,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2023-08-25 21:02:34,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:02:34,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 283 transitions, 4737 flow. Second operand has 26 states, 26 states have (on average 104.65384615384616) internal successors, (2721), 26 states have internal predecessors, (2721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:34,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:34,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:02:34,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:35,184 INFO L124 PetriNetUnfolderBase]: 666/1312 cut-off events. [2023-08-25 21:02:35,184 INFO L125 PetriNetUnfolderBase]: For 57418/57418 co-relation queries the response was YES. [2023-08-25 21:02:35,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12391 conditions, 1312 events. 666/1312 cut-off events. For 57418/57418 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 7571 event pairs, 58 based on Foata normal form. 3/1315 useless extension candidates. Maximal degree in co-relation 12304. Up to 988 conditions per place. [2023-08-25 21:02:35,196 INFO L140 encePairwiseOnDemand]: 270/278 looper letters, 244 selfloop transitions, 92 changer transitions 11/347 dead transitions. [2023-08-25 21:02:35,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 347 transitions, 5953 flow [2023-08-25 21:02:35,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-25 21:02:35,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-25 21:02:35,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2899 transitions. [2023-08-25 21:02:35,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3862243538502531 [2023-08-25 21:02:35,199 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2899 transitions. [2023-08-25 21:02:35,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2899 transitions. [2023-08-25 21:02:35,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:35,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2899 transitions. [2023-08-25 21:02:35,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 107.37037037037037) internal successors, (2899), 27 states have internal predecessors, (2899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:35,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 278.0) internal successors, (7784), 28 states have internal predecessors, (7784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:35,204 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 278.0) internal successors, (7784), 28 states have internal predecessors, (7784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:35,204 INFO L175 Difference]: Start difference. First operand has 278 places, 283 transitions, 4737 flow. Second operand 27 states and 2899 transitions. [2023-08-25 21:02:35,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 347 transitions, 5953 flow [2023-08-25 21:02:35,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 347 transitions, 5627 flow, removed 54 selfloop flow, removed 26 redundant places. [2023-08-25 21:02:35,386 INFO L231 Difference]: Finished difference. Result has 271 places, 289 transitions, 4700 flow [2023-08-25 21:02:35,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=4410, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=4700, PETRI_PLACES=271, PETRI_TRANSITIONS=289} [2023-08-25 21:02:35,387 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 235 predicate places. [2023-08-25 21:02:35,387 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 289 transitions, 4700 flow [2023-08-25 21:02:35,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 104.65384615384616) internal successors, (2721), 26 states have internal predecessors, (2721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:35,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:35,387 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:35,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-08-25 21:02:35,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:35,588 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:02:35,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:35,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1366437583, now seen corresponding path program 30 times [2023-08-25 21:02:35,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:35,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186089048] [2023-08-25 21:02:35,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:35,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:35,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:35,768 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:35,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:35,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186089048] [2023-08-25 21:02:35,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186089048] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:35,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799942392] [2023-08-25 21:02:35,769 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 21:02:35,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:35,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:35,777 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:35,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-08-25 21:02:35,888 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-25 21:02:35,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:35,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-25 21:02:35,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:36,025 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:36,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:36,251 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:36,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799942392] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:36,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:36,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 23 [2023-08-25 21:02:36,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455479447] [2023-08-25 21:02:36,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:36,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-25 21:02:36,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:36,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-25 21:02:36,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2023-08-25 21:02:36,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:02:36,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 289 transitions, 4700 flow. Second operand has 25 states, 25 states have (on average 104.72) internal successors, (2618), 25 states have internal predecessors, (2618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:36,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:36,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:02:36,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:37,496 INFO L124 PetriNetUnfolderBase]: 670/1297 cut-off events. [2023-08-25 21:02:37,496 INFO L125 PetriNetUnfolderBase]: For 55204/55204 co-relation queries the response was YES. [2023-08-25 21:02:37,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12509 conditions, 1297 events. 670/1297 cut-off events. For 55204/55204 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 7443 event pairs, 30 based on Foata normal form. 10/1307 useless extension candidates. Maximal degree in co-relation 12423. Up to 356 conditions per place. [2023-08-25 21:02:37,508 INFO L140 encePairwiseOnDemand]: 270/278 looper letters, 155 selfloop transitions, 120 changer transitions 94/369 dead transitions. [2023-08-25 21:02:37,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 369 transitions, 6614 flow [2023-08-25 21:02:37,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-08-25 21:02:37,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-08-25 21:02:37,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 3970 transitions. [2023-08-25 21:02:37,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38596150106941474 [2023-08-25 21:02:37,510 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 3970 transitions. [2023-08-25 21:02:37,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 3970 transitions. [2023-08-25 21:02:37,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:37,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 3970 transitions. [2023-08-25 21:02:37,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 107.29729729729729) internal successors, (3970), 37 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:37,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 278.0) internal successors, (10564), 38 states have internal predecessors, (10564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:37,517 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 278.0) internal successors, (10564), 38 states have internal predecessors, (10564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:37,518 INFO L175 Difference]: Start difference. First operand has 271 places, 289 transitions, 4700 flow. Second operand 37 states and 3970 transitions. [2023-08-25 21:02:37,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 369 transitions, 6614 flow [2023-08-25 21:02:37,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 369 transitions, 6334 flow, removed 33 selfloop flow, removed 22 redundant places. [2023-08-25 21:02:37,667 INFO L231 Difference]: Finished difference. Result has 282 places, 227 transitions, 3636 flow [2023-08-25 21:02:37,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=4364, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=3636, PETRI_PLACES=282, PETRI_TRANSITIONS=227} [2023-08-25 21:02:37,667 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 246 predicate places. [2023-08-25 21:02:37,668 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 227 transitions, 3636 flow [2023-08-25 21:02:37,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 104.72) internal successors, (2618), 25 states have internal predecessors, (2618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:37,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:37,668 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:37,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-08-25 21:02:37,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-08-25 21:02:37,869 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:02:37,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:37,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1865815239, now seen corresponding path program 31 times [2023-08-25 21:02:37,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:37,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182164473] [2023-08-25 21:02:37,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:37,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:38,053 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:38,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:38,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182164473] [2023-08-25 21:02:38,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182164473] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:38,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177777855] [2023-08-25 21:02:38,053 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 21:02:38,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:38,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:38,054 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:38,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-08-25 21:02:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:38,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-25 21:02:38,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:38,290 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:38,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:38,485 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:38,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177777855] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:38,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:38,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2023-08-25 21:02:38,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252500450] [2023-08-25 21:02:38,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:38,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-25 21:02:38,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:38,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-25 21:02:38,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2023-08-25 21:02:38,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:02:38,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 227 transitions, 3636 flow. Second operand has 25 states, 25 states have (on average 104.6) internal successors, (2615), 25 states have internal predecessors, (2615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:38,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:38,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:02:38,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:39,651 INFO L124 PetriNetUnfolderBase]: 596/1149 cut-off events. [2023-08-25 21:02:39,652 INFO L125 PetriNetUnfolderBase]: For 69065/69065 co-relation queries the response was YES. [2023-08-25 21:02:39,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12103 conditions, 1149 events. 596/1149 cut-off events. For 69065/69065 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6042 event pairs, 2 based on Foata normal form. 4/1153 useless extension candidates. Maximal degree in co-relation 12017. Up to 520 conditions per place. [2023-08-25 21:02:39,662 INFO L140 encePairwiseOnDemand]: 269/278 looper letters, 232 selfloop transitions, 121 changer transitions 14/367 dead transitions. [2023-08-25 21:02:39,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 367 transitions, 7107 flow [2023-08-25 21:02:39,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-25 21:02:39,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-25 21:02:39,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3348 transitions. [2023-08-25 21:02:39,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38848920863309355 [2023-08-25 21:02:39,665 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3348 transitions. [2023-08-25 21:02:39,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3348 transitions. [2023-08-25 21:02:39,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:39,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3348 transitions. [2023-08-25 21:02:39,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 108.0) internal successors, (3348), 31 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:39,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 278.0) internal successors, (8896), 32 states have internal predecessors, (8896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:39,671 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 278.0) internal successors, (8896), 32 states have internal predecessors, (8896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:39,671 INFO L175 Difference]: Start difference. First operand has 282 places, 227 transitions, 3636 flow. Second operand 31 states and 3348 transitions. [2023-08-25 21:02:39,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 367 transitions, 7107 flow [2023-08-25 21:02:39,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 367 transitions, 6330 flow, removed 222 selfloop flow, removed 37 redundant places. [2023-08-25 21:02:39,792 INFO L231 Difference]: Finished difference. Result has 261 places, 275 transitions, 4990 flow [2023-08-25 21:02:39,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=3163, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=4990, PETRI_PLACES=261, PETRI_TRANSITIONS=275} [2023-08-25 21:02:39,793 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 225 predicate places. [2023-08-25 21:02:39,793 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 275 transitions, 4990 flow [2023-08-25 21:02:39,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 104.6) internal successors, (2615), 25 states have internal predecessors, (2615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:39,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:39,793 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:39,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-08-25 21:02:39,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:39,994 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:02:39,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:39,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1035432763, now seen corresponding path program 32 times [2023-08-25 21:02:39,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:39,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970860411] [2023-08-25 21:02:39,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:39,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:40,194 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:40,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:40,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970860411] [2023-08-25 21:02:40,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970860411] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:40,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467527893] [2023-08-25 21:02:40,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 21:02:40,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:40,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:40,197 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:40,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-08-25 21:02:40,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 21:02:40,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:40,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-25 21:02:40,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:40,459 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:40,459 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:40,685 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:40,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467527893] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:40,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:40,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 22 [2023-08-25 21:02:40,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897951859] [2023-08-25 21:02:40,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:40,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 21:02:40,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:40,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 21:02:40,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2023-08-25 21:02:40,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:02:40,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 275 transitions, 4990 flow. Second operand has 24 states, 24 states have (on average 104.75) internal successors, (2514), 24 states have internal predecessors, (2514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:40,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:40,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:02:40,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:41,731 INFO L124 PetriNetUnfolderBase]: 623/1213 cut-off events. [2023-08-25 21:02:41,731 INFO L125 PetriNetUnfolderBase]: For 69937/69937 co-relation queries the response was YES. [2023-08-25 21:02:41,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13172 conditions, 1213 events. 623/1213 cut-off events. For 69937/69937 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6536 event pairs, 2 based on Foata normal form. 9/1222 useless extension candidates. Maximal degree in co-relation 13082. Up to 455 conditions per place. [2023-08-25 21:02:41,743 INFO L140 encePairwiseOnDemand]: 270/278 looper letters, 229 selfloop transitions, 111 changer transitions 22/362 dead transitions. [2023-08-25 21:02:41,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 362 transitions, 7544 flow [2023-08-25 21:02:41,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-25 21:02:41,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-25 21:02:41,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3222 transitions. [2023-08-25 21:02:41,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38633093525179857 [2023-08-25 21:02:41,746 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3222 transitions. [2023-08-25 21:02:41,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3222 transitions. [2023-08-25 21:02:41,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:41,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3222 transitions. [2023-08-25 21:02:41,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 107.4) internal successors, (3222), 30 states have internal predecessors, (3222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:41,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 278.0) internal successors, (8618), 31 states have internal predecessors, (8618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:41,752 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 278.0) internal successors, (8618), 31 states have internal predecessors, (8618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:41,752 INFO L175 Difference]: Start difference. First operand has 261 places, 275 transitions, 4990 flow. Second operand 30 states and 3222 transitions. [2023-08-25 21:02:41,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 362 transitions, 7544 flow [2023-08-25 21:02:41,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 362 transitions, 6418 flow, removed 536 selfloop flow, removed 10 redundant places. [2023-08-25 21:02:41,942 INFO L231 Difference]: Finished difference. Result has 284 places, 281 transitions, 4834 flow [2023-08-25 21:02:41,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=4093, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=4834, PETRI_PLACES=284, PETRI_TRANSITIONS=281} [2023-08-25 21:02:41,943 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 248 predicate places. [2023-08-25 21:02:41,943 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 281 transitions, 4834 flow [2023-08-25 21:02:41,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 104.75) internal successors, (2514), 24 states have internal predecessors, (2514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:41,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:41,943 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:41,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-08-25 21:02:42,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:42,144 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:02:42,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:42,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1197104777, now seen corresponding path program 33 times [2023-08-25 21:02:42,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:42,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621544028] [2023-08-25 21:02:42,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:42,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:42,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:42,316 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:42,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:42,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621544028] [2023-08-25 21:02:42,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621544028] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:42,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30703174] [2023-08-25 21:02:42,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 21:02:42,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:42,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:42,317 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:42,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-08-25 21:02:42,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 21:02:42,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:42,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-25 21:02:42,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:42,564 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:42,564 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:42,849 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:42,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30703174] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:42,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:42,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 22 [2023-08-25 21:02:42,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349467606] [2023-08-25 21:02:42,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:42,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 21:02:42,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:42,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 21:02:42,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2023-08-25 21:02:42,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:02:42,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 281 transitions, 4834 flow. Second operand has 24 states, 24 states have (on average 104.75) internal successors, (2514), 24 states have internal predecessors, (2514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:42,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:42,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:02:42,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:43,778 INFO L124 PetriNetUnfolderBase]: 622/1175 cut-off events. [2023-08-25 21:02:43,778 INFO L125 PetriNetUnfolderBase]: For 67760/67760 co-relation queries the response was YES. [2023-08-25 21:02:43,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12995 conditions, 1175 events. 622/1175 cut-off events. For 67760/67760 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6034 event pairs, 2 based on Foata normal form. 14/1189 useless extension candidates. Maximal degree in co-relation 12900. Up to 455 conditions per place. [2023-08-25 21:02:43,788 INFO L140 encePairwiseOnDemand]: 270/278 looper letters, 205 selfloop transitions, 66 changer transitions 81/352 dead transitions. [2023-08-25 21:02:43,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 352 transitions, 6817 flow [2023-08-25 21:02:43,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-25 21:02:43,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-25 21:02:43,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3327 transitions. [2023-08-25 21:02:43,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3860524483638895 [2023-08-25 21:02:43,793 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3327 transitions. [2023-08-25 21:02:43,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3327 transitions. [2023-08-25 21:02:43,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:43,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3327 transitions. [2023-08-25 21:02:43,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 107.3225806451613) internal successors, (3327), 31 states have internal predecessors, (3327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:43,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 278.0) internal successors, (8896), 32 states have internal predecessors, (8896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:43,800 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 278.0) internal successors, (8896), 32 states have internal predecessors, (8896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:43,800 INFO L175 Difference]: Start difference. First operand has 284 places, 281 transitions, 4834 flow. Second operand 31 states and 3327 transitions. [2023-08-25 21:02:43,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 352 transitions, 6817 flow [2023-08-25 21:02:44,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 352 transitions, 6090 flow, removed 254 selfloop flow, removed 23 redundant places. [2023-08-25 21:02:44,014 INFO L231 Difference]: Finished difference. Result has 285 places, 229 transitions, 3534 flow [2023-08-25 21:02:44,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=4121, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=3534, PETRI_PLACES=285, PETRI_TRANSITIONS=229} [2023-08-25 21:02:44,015 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 249 predicate places. [2023-08-25 21:02:44,015 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 229 transitions, 3534 flow [2023-08-25 21:02:44,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 104.75) internal successors, (2514), 24 states have internal predecessors, (2514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:44,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:44,015 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:44,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-08-25 21:02:44,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-08-25 21:02:44,221 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:02:44,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:44,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1603942422, now seen corresponding path program 34 times [2023-08-25 21:02:44,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:44,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169322098] [2023-08-25 21:02:44,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:44,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:44,399 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:44,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:44,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169322098] [2023-08-25 21:02:44,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169322098] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:44,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534126272] [2023-08-25 21:02:44,400 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 21:02:44,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:44,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:44,401 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:44,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-08-25 21:02:44,512 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 21:02:44,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:44,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-25 21:02:44,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:44,672 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:44,672 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:44,920 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:44,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534126272] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:44,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:44,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2023-08-25 21:02:44,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337252184] [2023-08-25 21:02:44,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:44,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-25 21:02:44,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:44,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-25 21:02:44,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=611, Unknown=0, NotChecked=0, Total=756 [2023-08-25 21:02:44,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:02:44,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 229 transitions, 3534 flow. Second operand has 28 states, 28 states have (on average 104.57142857142857) internal successors, (2928), 28 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:44,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:44,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:02:44,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:46,070 INFO L124 PetriNetUnfolderBase]: 542/1023 cut-off events. [2023-08-25 21:02:46,070 INFO L125 PetriNetUnfolderBase]: For 42418/42418 co-relation queries the response was YES. [2023-08-25 21:02:46,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9450 conditions, 1023 events. 542/1023 cut-off events. For 42418/42418 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5086 event pairs, 3 based on Foata normal form. 8/1031 useless extension candidates. Maximal degree in co-relation 9356. Up to 302 conditions per place. [2023-08-25 21:02:46,081 INFO L140 encePairwiseOnDemand]: 270/278 looper letters, 120 selfloop transitions, 179 changer transitions 81/380 dead transitions. [2023-08-25 21:02:46,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 380 transitions, 6368 flow [2023-08-25 21:02:46,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-08-25 21:02:46,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-08-25 21:02:46,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 4494 transitions. [2023-08-25 21:02:46,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38489208633093525 [2023-08-25 21:02:46,085 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 4494 transitions. [2023-08-25 21:02:46,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 4494 transitions. [2023-08-25 21:02:46,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:46,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 4494 transitions. [2023-08-25 21:02:46,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 107.0) internal successors, (4494), 42 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:46,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 278.0) internal successors, (11954), 43 states have internal predecessors, (11954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:46,096 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 278.0) internal successors, (11954), 43 states have internal predecessors, (11954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:46,096 INFO L175 Difference]: Start difference. First operand has 285 places, 229 transitions, 3534 flow. Second operand 42 states and 4494 transitions. [2023-08-25 21:02:46,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 380 transitions, 6368 flow [2023-08-25 21:02:46,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 380 transitions, 5623 flow, removed 293 selfloop flow, removed 37 redundant places. [2023-08-25 21:02:46,194 INFO L231 Difference]: Finished difference. Result has 284 places, 243 transitions, 3941 flow [2023-08-25 21:02:46,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=3066, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=3941, PETRI_PLACES=284, PETRI_TRANSITIONS=243} [2023-08-25 21:02:46,195 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 248 predicate places. [2023-08-25 21:02:46,195 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 243 transitions, 3941 flow [2023-08-25 21:02:46,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 104.57142857142857) internal successors, (2928), 28 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:46,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:46,196 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:46,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-08-25 21:02:46,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-08-25 21:02:46,396 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:02:46,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:46,397 INFO L85 PathProgramCache]: Analyzing trace with hash -560220264, now seen corresponding path program 35 times [2023-08-25 21:02:46,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:46,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712298839] [2023-08-25 21:02:46,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:46,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:46,593 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:46,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:46,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712298839] [2023-08-25 21:02:46,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712298839] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:46,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670866216] [2023-08-25 21:02:46,594 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 21:02:46,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:46,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:46,595 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:46,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-08-25 21:02:46,701 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-25 21:02:46,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:46,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-25 21:02:46,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:46,861 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:46,861 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:47,086 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:47,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670866216] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:47,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:47,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2023-08-25 21:02:47,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032787825] [2023-08-25 21:02:47,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:47,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-25 21:02:47,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:47,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-25 21:02:47,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=661, Unknown=0, NotChecked=0, Total=812 [2023-08-25 21:02:47,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:02:47,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 243 transitions, 3941 flow. Second operand has 29 states, 29 states have (on average 104.51724137931035) internal successors, (3031), 29 states have internal predecessors, (3031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:47,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:47,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:02:47,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:48,501 INFO L124 PetriNetUnfolderBase]: 695/1291 cut-off events. [2023-08-25 21:02:48,501 INFO L125 PetriNetUnfolderBase]: For 40478/40478 co-relation queries the response was YES. [2023-08-25 21:02:48,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12808 conditions, 1291 events. 695/1291 cut-off events. For 40478/40478 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6484 event pairs, 3 based on Foata normal form. 5/1296 useless extension candidates. Maximal degree in co-relation 12713. Up to 342 conditions per place. [2023-08-25 21:02:48,514 INFO L140 encePairwiseOnDemand]: 270/278 looper letters, 184 selfloop transitions, 250 changer transitions 25/459 dead transitions. [2023-08-25 21:02:48,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 459 transitions, 8368 flow [2023-08-25 21:02:48,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-08-25 21:02:48,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-08-25 21:02:48,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 5245 transitions. [2023-08-25 21:02:48,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3850389076493907 [2023-08-25 21:02:48,517 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 5245 transitions. [2023-08-25 21:02:48,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 5245 transitions. [2023-08-25 21:02:48,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:48,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 5245 transitions. [2023-08-25 21:02:48,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 107.04081632653062) internal successors, (5245), 49 states have internal predecessors, (5245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:48,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 278.0) internal successors, (13900), 50 states have internal predecessors, (13900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:48,527 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 278.0) internal successors, (13900), 50 states have internal predecessors, (13900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:48,527 INFO L175 Difference]: Start difference. First operand has 284 places, 243 transitions, 3941 flow. Second operand 49 states and 5245 transitions. [2023-08-25 21:02:48,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 459 transitions, 8368 flow [2023-08-25 21:02:48,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 459 transitions, 7261 flow, removed 441 selfloop flow, removed 29 redundant places. [2023-08-25 21:02:48,657 INFO L231 Difference]: Finished difference. Result has 295 places, 336 transitions, 5824 flow [2023-08-25 21:02:48,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=3360, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=5824, PETRI_PLACES=295, PETRI_TRANSITIONS=336} [2023-08-25 21:02:48,658 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 259 predicate places. [2023-08-25 21:02:48,658 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 336 transitions, 5824 flow [2023-08-25 21:02:48,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 104.51724137931035) internal successors, (3031), 29 states have internal predecessors, (3031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:48,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:48,659 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:48,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-08-25 21:02:48,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-08-25 21:02:48,859 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:02:48,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:48,860 INFO L85 PathProgramCache]: Analyzing trace with hash -689493984, now seen corresponding path program 36 times [2023-08-25 21:02:48,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:48,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152000913] [2023-08-25 21:02:48,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:48,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:48,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:49,048 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:49,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:49,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152000913] [2023-08-25 21:02:49,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152000913] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:49,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984541051] [2023-08-25 21:02:49,048 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 21:02:49,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:49,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:49,050 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:49,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-08-25 21:02:49,196 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-25 21:02:49,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:49,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-25 21:02:49,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:49,388 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:49,388 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:49,629 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:49,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984541051] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:49,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:49,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2023-08-25 21:02:49,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773412539] [2023-08-25 21:02:49,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:49,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-25 21:02:49,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:49,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-25 21:02:49,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=661, Unknown=0, NotChecked=0, Total=812 [2023-08-25 21:02:49,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:02:49,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 336 transitions, 5824 flow. Second operand has 29 states, 29 states have (on average 104.58620689655173) internal successors, (3033), 29 states have internal predecessors, (3033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:49,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:49,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:02:49,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:51,057 INFO L124 PetriNetUnfolderBase]: 691/1262 cut-off events. [2023-08-25 21:02:51,058 INFO L125 PetriNetUnfolderBase]: For 40689/40689 co-relation queries the response was YES. [2023-08-25 21:02:51,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12508 conditions, 1262 events. 691/1262 cut-off events. For 40689/40689 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6166 event pairs, 3 based on Foata normal form. 2/1264 useless extension candidates. Maximal degree in co-relation 12417. Up to 342 conditions per place. [2023-08-25 21:02:51,068 INFO L140 encePairwiseOnDemand]: 270/278 looper letters, 174 selfloop transitions, 251 changer transitions 24/449 dead transitions. [2023-08-25 21:02:51,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 449 transitions, 8099 flow [2023-08-25 21:02:51,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-08-25 21:02:51,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-08-25 21:02:51,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 5344 transitions. [2023-08-25 21:02:51,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38446043165467625 [2023-08-25 21:02:51,072 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 5344 transitions. [2023-08-25 21:02:51,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 5344 transitions. [2023-08-25 21:02:51,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:51,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 5344 transitions. [2023-08-25 21:02:51,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 106.88) internal successors, (5344), 50 states have internal predecessors, (5344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:51,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 278.0) internal successors, (14178), 51 states have internal predecessors, (14178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:51,086 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 278.0) internal successors, (14178), 51 states have internal predecessors, (14178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:51,086 INFO L175 Difference]: Start difference. First operand has 295 places, 336 transitions, 5824 flow. Second operand 50 states and 5344 transitions. [2023-08-25 21:02:51,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 449 transitions, 8099 flow [2023-08-25 21:02:51,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 449 transitions, 7029 flow, removed 392 selfloop flow, removed 31 redundant places. [2023-08-25 21:02:51,241 INFO L231 Difference]: Finished difference. Result has 308 places, 338 transitions, 5378 flow [2023-08-25 21:02:51,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=4875, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=5378, PETRI_PLACES=308, PETRI_TRANSITIONS=338} [2023-08-25 21:02:51,242 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 272 predicate places. [2023-08-25 21:02:51,242 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 338 transitions, 5378 flow [2023-08-25 21:02:51,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 104.58620689655173) internal successors, (3033), 29 states have internal predecessors, (3033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:51,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:51,243 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:51,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-08-25 21:02:51,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-08-25 21:02:51,449 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:02:51,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:51,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1075181014, now seen corresponding path program 37 times [2023-08-25 21:02:51,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:51,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059831190] [2023-08-25 21:02:51,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:51,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:51,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:51,614 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:51,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:51,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059831190] [2023-08-25 21:02:51,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059831190] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:51,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244699614] [2023-08-25 21:02:51,614 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 21:02:51,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:51,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:51,615 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:51,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-08-25 21:02:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:51,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-25 21:02:51,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:51,864 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:51,864 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:52,081 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:52,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244699614] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:52,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:52,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2023-08-25 21:02:52,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688487977] [2023-08-25 21:02:52,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:52,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-25 21:02:52,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:52,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-25 21:02:52,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2023-08-25 21:02:52,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:02:52,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 338 transitions, 5378 flow. Second operand has 26 states, 26 states have (on average 104.65384615384616) internal successors, (2721), 26 states have internal predecessors, (2721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:52,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:52,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:02:52,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:53,294 INFO L124 PetriNetUnfolderBase]: 1101/1931 cut-off events. [2023-08-25 21:02:53,294 INFO L125 PetriNetUnfolderBase]: For 49819/49819 co-relation queries the response was YES. [2023-08-25 21:02:53,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17580 conditions, 1931 events. 1101/1931 cut-off events. For 49819/49819 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 10011 event pairs, 1 based on Foata normal form. 7/1938 useless extension candidates. Maximal degree in co-relation 17492. Up to 1008 conditions per place. [2023-08-25 21:02:53,313 INFO L140 encePairwiseOnDemand]: 269/278 looper letters, 311 selfloop transitions, 207 changer transitions 122/640 dead transitions. [2023-08-25 21:02:53,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 640 transitions, 11595 flow [2023-08-25 21:02:53,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-08-25 21:02:53,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-08-25 21:02:53,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 5017 transitions. [2023-08-25 21:02:53,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3839736721261289 [2023-08-25 21:02:53,317 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 5017 transitions. [2023-08-25 21:02:53,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 5017 transitions. [2023-08-25 21:02:53,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:53,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 5017 transitions. [2023-08-25 21:02:53,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 106.74468085106383) internal successors, (5017), 47 states have internal predecessors, (5017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:53,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 278.0) internal successors, (13344), 48 states have internal predecessors, (13344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:53,331 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 278.0) internal successors, (13344), 48 states have internal predecessors, (13344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:53,331 INFO L175 Difference]: Start difference. First operand has 308 places, 338 transitions, 5378 flow. Second operand 47 states and 5017 transitions. [2023-08-25 21:02:53,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 640 transitions, 11595 flow [2023-08-25 21:02:53,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 640 transitions, 10774 flow, removed 116 selfloop flow, removed 42 redundant places. [2023-08-25 21:02:53,515 INFO L231 Difference]: Finished difference. Result has 327 places, 445 transitions, 7593 flow [2023-08-25 21:02:53,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=4890, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=7593, PETRI_PLACES=327, PETRI_TRANSITIONS=445} [2023-08-25 21:02:53,516 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 291 predicate places. [2023-08-25 21:02:53,516 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 445 transitions, 7593 flow [2023-08-25 21:02:53,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 104.65384615384616) internal successors, (2721), 26 states have internal predecessors, (2721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:53,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:53,516 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:53,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-08-25 21:02:53,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-08-25 21:02:53,717 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:02:53,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:53,717 INFO L85 PathProgramCache]: Analyzing trace with hash 268872606, now seen corresponding path program 38 times [2023-08-25 21:02:53,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:53,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199468955] [2023-08-25 21:02:53,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:53,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:53,909 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:53,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:53,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199468955] [2023-08-25 21:02:53,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199468955] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:53,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397297812] [2023-08-25 21:02:53,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 21:02:53,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:53,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:53,911 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:53,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-08-25 21:02:54,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 21:02:54,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:54,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-25 21:02:54,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:54,171 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:54,171 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:54,429 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:54,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397297812] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:54,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:54,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 25 [2023-08-25 21:02:54,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506239956] [2023-08-25 21:02:54,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:54,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-25 21:02:54,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:54,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-25 21:02:54,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2023-08-25 21:02:54,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:02:54,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 445 transitions, 7593 flow. Second operand has 27 states, 27 states have (on average 104.5925925925926) internal successors, (2824), 27 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:54,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:54,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:02:54,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:55,471 INFO L124 PetriNetUnfolderBase]: 947/1690 cut-off events. [2023-08-25 21:02:55,471 INFO L125 PetriNetUnfolderBase]: For 44045/44045 co-relation queries the response was YES. [2023-08-25 21:02:55,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16049 conditions, 1690 events. 947/1690 cut-off events. For 44045/44045 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 8679 event pairs, 2 based on Foata normal form. 6/1696 useless extension candidates. Maximal degree in co-relation 15944. Up to 842 conditions per place. [2023-08-25 21:02:55,485 INFO L140 encePairwiseOnDemand]: 270/278 looper letters, 342 selfloop transitions, 166 changer transitions 21/529 dead transitions. [2023-08-25 21:02:55,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 529 transitions, 9905 flow [2023-08-25 21:02:55,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-25 21:02:55,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-25 21:02:55,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3205 transitions. [2023-08-25 21:02:55,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3842925659472422 [2023-08-25 21:02:55,488 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3205 transitions. [2023-08-25 21:02:55,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3205 transitions. [2023-08-25 21:02:55,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:55,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3205 transitions. [2023-08-25 21:02:55,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 106.83333333333333) internal successors, (3205), 30 states have internal predecessors, (3205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:55,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 278.0) internal successors, (8618), 31 states have internal predecessors, (8618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:55,494 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 278.0) internal successors, (8618), 31 states have internal predecessors, (8618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:55,494 INFO L175 Difference]: Start difference. First operand has 327 places, 445 transitions, 7593 flow. Second operand 30 states and 3205 transitions. [2023-08-25 21:02:55,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 529 transitions, 9905 flow [2023-08-25 21:02:55,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 529 transitions, 9317 flow, removed 208 selfloop flow, removed 36 redundant places. [2023-08-25 21:02:55,682 INFO L231 Difference]: Finished difference. Result has 310 places, 449 transitions, 7505 flow [2023-08-25 21:02:55,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=7050, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7505, PETRI_PLACES=310, PETRI_TRANSITIONS=449} [2023-08-25 21:02:55,682 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 274 predicate places. [2023-08-25 21:02:55,682 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 449 transitions, 7505 flow [2023-08-25 21:02:55,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 104.5925925925926) internal successors, (2824), 27 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:55,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:55,683 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:55,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-08-25 21:02:55,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-08-25 21:02:55,888 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:02:55,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:55,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1932730436, now seen corresponding path program 39 times [2023-08-25 21:02:55,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:55,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521068177] [2023-08-25 21:02:55,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:55,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:55,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:56,061 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:56,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:56,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521068177] [2023-08-25 21:02:56,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521068177] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:56,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247971096] [2023-08-25 21:02:56,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 21:02:56,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:56,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:56,063 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:56,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-08-25 21:02:56,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-25 21:02:56,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:56,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-25 21:02:56,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:56,324 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:56,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:56,537 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:56,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247971096] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:56,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:56,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2023-08-25 21:02:56,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449132732] [2023-08-25 21:02:56,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:56,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-25 21:02:56,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:56,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-25 21:02:56,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=531, Unknown=0, NotChecked=0, Total=650 [2023-08-25 21:02:56,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:02:56,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 449 transitions, 7505 flow. Second operand has 26 states, 26 states have (on average 104.65384615384616) internal successors, (2721), 26 states have internal predecessors, (2721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:56,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:56,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:02:56,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:57,269 INFO L124 PetriNetUnfolderBase]: 915/1622 cut-off events. [2023-08-25 21:02:57,269 INFO L125 PetriNetUnfolderBase]: For 41583/41583 co-relation queries the response was YES. [2023-08-25 21:02:57,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15262 conditions, 1622 events. 915/1622 cut-off events. For 41583/41583 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 8202 event pairs, 2 based on Foata normal form. 10/1632 useless extension candidates. Maximal degree in co-relation 15167. Up to 893 conditions per place. [2023-08-25 21:02:57,281 INFO L140 encePairwiseOnDemand]: 270/278 looper letters, 263 selfloop transitions, 12 changer transitions 248/523 dead transitions. [2023-08-25 21:02:57,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 523 transitions, 9632 flow [2023-08-25 21:02:57,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-25 21:02:57,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-25 21:02:57,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2562 transitions. [2023-08-25 21:02:57,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3839928057553957 [2023-08-25 21:02:57,283 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2562 transitions. [2023-08-25 21:02:57,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2562 transitions. [2023-08-25 21:02:57,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:57,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2562 transitions. [2023-08-25 21:02:57,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 106.75) internal successors, (2562), 24 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:57,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 278.0) internal successors, (6950), 25 states have internal predecessors, (6950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:57,289 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 278.0) internal successors, (6950), 25 states have internal predecessors, (6950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:57,289 INFO L175 Difference]: Start difference. First operand has 310 places, 449 transitions, 7505 flow. Second operand 24 states and 2562 transitions. [2023-08-25 21:02:57,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 523 transitions, 9632 flow [2023-08-25 21:02:57,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 523 transitions, 9146 flow, removed 114 selfloop flow, removed 23 redundant places. [2023-08-25 21:02:57,455 INFO L231 Difference]: Finished difference. Result has 308 places, 266 transitions, 3835 flow [2023-08-25 21:02:57,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=7039, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3835, PETRI_PLACES=308, PETRI_TRANSITIONS=266} [2023-08-25 21:02:57,456 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 272 predicate places. [2023-08-25 21:02:57,456 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 266 transitions, 3835 flow [2023-08-25 21:02:57,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 104.65384615384616) internal successors, (2721), 26 states have internal predecessors, (2721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:57,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:57,457 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:57,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-08-25 21:02:57,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-08-25 21:02:57,663 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 21:02:57,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:57,663 INFO L85 PathProgramCache]: Analyzing trace with hash 476784735, now seen corresponding path program 40 times [2023-08-25 21:02:57,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:57,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116676834] [2023-08-25 21:02:57,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:57,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:57,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:57,880 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:57,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:57,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116676834] [2023-08-25 21:02:57,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116676834] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:57,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985153058] [2023-08-25 21:02:57,881 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 21:02:57,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:57,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:57,882 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:57,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-08-25 21:02:58,039 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 21:02:58,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:58,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-25 21:02:58,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:58,247 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:58,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:58,488 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:58,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985153058] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:58,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:58,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 28 [2023-08-25 21:02:58,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747482364] [2023-08-25 21:02:58,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:58,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-25 21:02:58,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:58,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-25 21:02:58,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=730, Unknown=0, NotChecked=0, Total=870 [2023-08-25 21:02:58,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2023-08-25 21:02:58,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 266 transitions, 3835 flow. Second operand has 30 states, 30 states have (on average 104.56666666666666) internal successors, (3137), 30 states have internal predecessors, (3137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:58,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:58,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2023-08-25 21:02:58,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:59,231 INFO L124 PetriNetUnfolderBase]: 623/1062 cut-off events. [2023-08-25 21:02:59,232 INFO L125 PetriNetUnfolderBase]: For 26692/26692 co-relation queries the response was YES. [2023-08-25 21:02:59,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9566 conditions, 1062 events. 623/1062 cut-off events. For 26692/26692 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4788 event pairs, 0 based on Foata normal form. 4/1066 useless extension candidates. Maximal degree in co-relation 9481. Up to 251 conditions per place. [2023-08-25 21:02:59,239 INFO L140 encePairwiseOnDemand]: 270/278 looper letters, 0 selfloop transitions, 0 changer transitions 384/384 dead transitions. [2023-08-25 21:02:59,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 384 transitions, 6419 flow [2023-08-25 21:02:59,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-25 21:02:59,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-25 21:02:59,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3192 transitions. [2023-08-25 21:02:59,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38273381294964026 [2023-08-25 21:02:59,241 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3192 transitions. [2023-08-25 21:02:59,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3192 transitions. [2023-08-25 21:02:59,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:59,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3192 transitions. [2023-08-25 21:02:59,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 106.4) internal successors, (3192), 30 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:59,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 278.0) internal successors, (8618), 31 states have internal predecessors, (8618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:59,247 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 278.0) internal successors, (8618), 31 states have internal predecessors, (8618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:59,247 INFO L175 Difference]: Start difference. First operand has 308 places, 266 transitions, 3835 flow. Second operand 30 states and 3192 transitions. [2023-08-25 21:02:59,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 384 transitions, 6419 flow [2023-08-25 21:02:59,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 384 transitions, 5698 flow, removed 226 selfloop flow, removed 39 redundant places. [2023-08-25 21:02:59,325 INFO L231 Difference]: Finished difference. Result has 222 places, 0 transitions, 0 flow [2023-08-25 21:02:59,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=3406, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=0, PETRI_PLACES=222, PETRI_TRANSITIONS=0} [2023-08-25 21:02:59,326 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 186 predicate places. [2023-08-25 21:02:59,326 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 0 transitions, 0 flow [2023-08-25 21:02:59,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 104.56666666666666) internal successors, (3137), 30 states have internal predecessors, (3137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:59,328 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (25 of 26 remaining) [2023-08-25 21:02:59,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (24 of 26 remaining) [2023-08-25 21:02:59,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (23 of 26 remaining) [2023-08-25 21:02:59,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (22 of 26 remaining) [2023-08-25 21:02:59,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (21 of 26 remaining) [2023-08-25 21:02:59,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (20 of 26 remaining) [2023-08-25 21:02:59,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONDATA_RACE (19 of 26 remaining) [2023-08-25 21:02:59,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 26 remaining) [2023-08-25 21:02:59,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (17 of 26 remaining) [2023-08-25 21:02:59,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (16 of 26 remaining) [2023-08-25 21:02:59,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 26 remaining) [2023-08-25 21:02:59,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 26 remaining) [2023-08-25 21:02:59,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (13 of 26 remaining) [2023-08-25 21:02:59,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (12 of 26 remaining) [2023-08-25 21:02:59,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (11 of 26 remaining) [2023-08-25 21:02:59,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (10 of 26 remaining) [2023-08-25 21:02:59,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONASSERT (9 of 26 remaining) [2023-08-25 21:02:59,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 26 remaining) [2023-08-25 21:02:59,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 26 remaining) [2023-08-25 21:02:59,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (6 of 26 remaining) [2023-08-25 21:02:59,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (5 of 26 remaining) [2023-08-25 21:02:59,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (4 of 26 remaining) [2023-08-25 21:02:59,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (3 of 26 remaining) [2023-08-25 21:02:59,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (2 of 26 remaining) [2023-08-25 21:02:59,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (1 of 26 remaining) [2023-08-25 21:02:59,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONDATA_RACE (0 of 26 remaining) [2023-08-25 21:02:59,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-08-25 21:02:59,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-08-25 21:02:59,537 INFO L445 BasicCegarLoop]: Path program histogram: [40, 1, 1, 1] [2023-08-25 21:02:59,542 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-25 21:02:59,542 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 21:02:59,544 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 09:02:59 BasicIcfg [2023-08-25 21:02:59,544 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 21:02:59,545 INFO L158 Benchmark]: Toolchain (without parser) took 85829.82ms. Allocated memory was 358.6MB in the beginning and 677.4MB in the end (delta: 318.8MB). Free memory was 334.7MB in the beginning and 443.4MB in the end (delta: -108.6MB). Peak memory consumption was 213.0MB. Max. memory is 16.0GB. [2023-08-25 21:02:59,545 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 358.6MB. Free memory is still 335.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 21:02:59,548 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.53ms. Allocated memory is still 358.6MB. Free memory was 334.7MB in the beginning and 323.4MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-25 21:02:59,548 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.93ms. Allocated memory is still 358.6MB. Free memory was 323.4MB in the beginning and 321.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 21:02:59,548 INFO L158 Benchmark]: Boogie Preprocessor took 47.36ms. Allocated memory is still 358.6MB. Free memory was 321.9MB in the beginning and 320.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 21:02:59,549 INFO L158 Benchmark]: RCFGBuilder took 506.38ms. Allocated memory is still 358.6MB. Free memory was 320.2MB in the beginning and 299.8MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-25 21:02:59,549 INFO L158 Benchmark]: TraceAbstraction took 84988.07ms. Allocated memory was 358.6MB in the beginning and 677.4MB in the end (delta: 318.8MB). Free memory was 298.8MB in the beginning and 443.4MB in the end (delta: -144.6MB). Peak memory consumption was 177.3MB. Max. memory is 16.0GB. [2023-08-25 21:02:59,550 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 358.6MB. Free memory is still 335.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 232.53ms. Allocated memory is still 358.6MB. Free memory was 334.7MB in the beginning and 323.4MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 49.93ms. Allocated memory is still 358.6MB. Free memory was 323.4MB in the beginning and 321.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 47.36ms. Allocated memory is still 358.6MB. Free memory was 321.9MB in the beginning and 320.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 506.38ms. Allocated memory is still 358.6MB. Free memory was 320.2MB in the beginning and 299.8MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 84988.07ms. Allocated memory was 358.6MB in the beginning and 677.4MB in the end (delta: 318.8MB). Free memory was 298.8MB in the beginning and 443.4MB in the end (delta: -144.6MB). Peak memory consumption was 177.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.8s, 125 PlacesBefore, 36 PlacesAfterwards, 125 TransitionsBefore, 31 TransitionsAfterwards, 1364 CoEnabledTransitionPairs, 7 FixpointIterations, 77 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 10 TrivialYvCompositions, 7 ConcurrentYvCompositions, 5 ChoiceCompositions, 142 TotalNumberOfCompositions, 1549 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1524, independent: 1522, independent conditional: 0, independent unconditional: 1522, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 757, independent: 755, independent conditional: 0, independent unconditional: 755, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1524, independent: 767, independent conditional: 0, independent unconditional: 767, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 757, unknown conditional: 0, unknown unconditional: 757] , Statistics on independence cache: Total cache size (in pairs): 43, Positive cache size: 43, Positive conditional cache size: 0, Positive unconditional cache size: 43, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 41]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 43]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 43]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 52]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 54]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 55]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 55]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 67]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 68]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 69]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 69]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 74]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 75]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 77]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 77]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 77]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 21]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 159 locations, 26 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 84.8s, OverallIterations: 43, TraceHistogramMax: 4, PathProgramHistogramMax: 40, EmptinessCheckTime: 0.0s, AutomataDifference: 41.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3437 SdHoareTripleChecker+Valid, 14.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3437 mSDsluCounter, 825 SdHoareTripleChecker+Invalid, 12.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 634 mSDsCounter, 1500 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27748 IncrementalHoareTripleChecker+Invalid, 29248 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1500 mSolverCounterUnsat, 191 mSDtfsCounter, 27748 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2225 GetRequests, 631 SyntacticMatches, 67 SemanticMatches, 1527 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18998 ImplicationChecksByTransitivity, 24.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7593occurred in iteration=40, InterpolantAutomatonStates: 1095, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 26.2s InterpolantComputationTime, 1344 NumberOfCodeBlocks, 1344 NumberOfCodeBlocksAsserted, 125 NumberOfCheckSat, 1879 ConstructedInterpolants, 0 QuantifiedInterpolants, 26484 SizeOfPredicates, 214 NumberOfNonLiveVariables, 6715 ConjunctsInSsa, 900 ConjunctsInUnsatCore, 123 InterpolantComputations, 3 PerfectInterpolantSequences, 14/619 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 17 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-25 21:02:59,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...