/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 09:47:27,303 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 09:47:27,349 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 09:47:27,352 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 09:47:27,353 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 09:47:27,377 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 09:47:27,377 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 09:47:27,378 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 09:47:27,378 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 09:47:27,378 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 09:47:27,379 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 09:47:27,379 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 09:47:27,379 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 09:47:27,380 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 09:47:27,380 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 09:47:27,380 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 09:47:27,381 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 09:47:27,381 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 09:47:27,381 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 09:47:27,382 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 09:47:27,382 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 09:47:27,388 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 09:47:27,389 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 09:47:27,389 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 09:47:27,389 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 09:47:27,390 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 09:47:27,390 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 09:47:27,390 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 09:47:27,390 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 09:47:27,391 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 09:47:27,391 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 09:47:27,391 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 09:47:27,392 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 09:47:27,392 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 09:47:27,392 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 09:47:27,393 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 09:47:27,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 09:47:27,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 09:47:27,716 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 09:47:27,717 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 09:47:27,717 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 09:47:27,718 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c [2023-08-26 09:47:28,921 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 09:47:29,156 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 09:47:29,156 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c [2023-08-26 09:47:29,163 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de37afff5/b9b427d4759f4bdda7a090332a389d0c/FLAG23aa2cf6c [2023-08-26 09:47:29,173 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de37afff5/b9b427d4759f4bdda7a090332a389d0c [2023-08-26 09:47:29,175 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 09:47:29,176 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 09:47:29,177 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 09:47:29,177 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 09:47:29,179 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 09:47:29,180 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:47:29" (1/1) ... [2023-08-26 09:47:29,180 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b15042b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:47:29, skipping insertion in model container [2023-08-26 09:47:29,181 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:47:29" (1/1) ... [2023-08-26 09:47:29,200 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 09:47:29,349 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 09:47:29,358 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 09:47:29,397 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 09:47:29,406 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 09:47:29,406 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 09:47:29,412 INFO L206 MainTranslator]: Completed translation [2023-08-26 09:47:29,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:47:29 WrapperNode [2023-08-26 09:47:29,412 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 09:47:29,415 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 09:47:29,415 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 09:47:29,416 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 09:47:29,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:47:29" (1/1) ... [2023-08-26 09:47:29,438 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:47:29" (1/1) ... [2023-08-26 09:47:29,467 INFO L138 Inliner]: procedures = 21, calls = 26, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 123 [2023-08-26 09:47:29,468 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 09:47:29,469 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 09:47:29,469 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 09:47:29,469 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 09:47:29,476 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:47:29" (1/1) ... [2023-08-26 09:47:29,477 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:47:29" (1/1) ... [2023-08-26 09:47:29,494 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:47:29" (1/1) ... [2023-08-26 09:47:29,495 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:47:29" (1/1) ... [2023-08-26 09:47:29,499 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:47:29" (1/1) ... [2023-08-26 09:47:29,502 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:47:29" (1/1) ... [2023-08-26 09:47:29,503 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:47:29" (1/1) ... [2023-08-26 09:47:29,504 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:47:29" (1/1) ... [2023-08-26 09:47:29,516 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 09:47:29,517 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 09:47:29,517 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 09:47:29,517 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 09:47:29,518 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:47:29" (1/1) ... [2023-08-26 09:47:29,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 09:47:29,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:47:29,553 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 09:47:29,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 09:47:29,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 09:47:29,594 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 09:47:29,594 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 09:47:29,595 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-26 09:47:29,595 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-26 09:47:29,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 09:47:29,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 09:47:29,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 09:47:29,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 09:47:29,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 09:47:29,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 09:47:29,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 09:47:29,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 09:47:29,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 09:47:29,597 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 09:47:29,710 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 09:47:29,711 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 09:47:29,994 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 09:47:30,039 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 09:47:30,040 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-26 09:47:30,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:47:30 BoogieIcfgContainer [2023-08-26 09:47:30,042 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 09:47:30,043 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 09:47:30,043 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 09:47:30,046 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 09:47:30,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 09:47:29" (1/3) ... [2023-08-26 09:47:30,047 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f655a15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:47:30, skipping insertion in model container [2023-08-26 09:47:30,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:47:29" (2/3) ... [2023-08-26 09:47:30,047 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f655a15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:47:30, skipping insertion in model container [2023-08-26 09:47:30,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:47:30" (3/3) ... [2023-08-26 09:47:30,048 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1-alt.wvr.c [2023-08-26 09:47:30,060 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 09:47:30,060 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2023-08-26 09:47:30,060 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 09:47:30,117 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 09:47:30,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 140 transitions, 296 flow [2023-08-26 09:47:30,200 INFO L124 PetriNetUnfolderBase]: 7/138 cut-off events. [2023-08-26 09:47:30,201 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 09:47:30,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 138 events. 7/138 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 126 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2023-08-26 09:47:30,206 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 140 transitions, 296 flow [2023-08-26 09:47:30,210 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 129 transitions, 270 flow [2023-08-26 09:47:30,212 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 09:47:30,224 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 129 transitions, 270 flow [2023-08-26 09:47:30,230 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 129 transitions, 270 flow [2023-08-26 09:47:30,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 129 transitions, 270 flow [2023-08-26 09:47:30,288 INFO L124 PetriNetUnfolderBase]: 7/129 cut-off events. [2023-08-26 09:47:30,288 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 09:47:30,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 129 events. 7/129 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 125 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2023-08-26 09:47:30,290 INFO L119 LiptonReduction]: Number of co-enabled transitions 1636 [2023-08-26 09:47:33,820 INFO L134 LiptonReduction]: Checked pairs total: 1797 [2023-08-26 09:47:33,821 INFO L136 LiptonReduction]: Total number of compositions: 153 [2023-08-26 09:47:33,844 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 09:47:33,855 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;@1a8beacd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 09:47:33,856 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-08-26 09:47:33,861 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 09:47:33,861 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 09:47:33,861 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 09:47:33,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:47:33,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 09:47:33,862 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 09:47:33,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:47:33,866 INFO L85 PathProgramCache]: Analyzing trace with hash 587, now seen corresponding path program 1 times [2023-08-26 09:47:33,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:47:33,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121329573] [2023-08-26 09:47:33,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:47:33,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:47:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:47:33,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:33,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:47:33,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121329573] [2023-08-26 09:47:33,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121329573] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:47:33,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:47:33,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 09:47:33,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859169894] [2023-08-26 09:47:33,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:47:33,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 09:47:33,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:47:33,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 09:47:33,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 09:47:34,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 293 [2023-08-26 09:47:34,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 74 flow. Second operand has 2 states, 2 states have (on average 124.5) internal successors, (249), 2 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:34,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:47:34,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 293 [2023-08-26 09:47:34,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:47:34,044 INFO L124 PetriNetUnfolderBase]: 44/77 cut-off events. [2023-08-26 09:47:34,044 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-26 09:47:34,045 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 182 event pairs, 18 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 120. Up to 74 conditions per place. [2023-08-26 09:47:34,046 INFO L140 encePairwiseOnDemand]: 277/293 looper letters, 13 selfloop transitions, 0 changer transitions 0/15 dead transitions. [2023-08-26 09:47:34,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 15 transitions, 68 flow [2023-08-26 09:47:34,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 09:47:34,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 09:47:34,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 277 transitions. [2023-08-26 09:47:34,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4726962457337884 [2023-08-26 09:47:34,069 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 277 transitions. [2023-08-26 09:47:34,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 277 transitions. [2023-08-26 09:47:34,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:47:34,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 277 transitions. [2023-08-26 09:47:34,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 138.5) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:34,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 293.0) internal successors, (879), 3 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:34,081 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 293.0) internal successors, (879), 3 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:34,086 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 74 flow. Second operand 2 states and 277 transitions. [2023-08-26 09:47:34,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 15 transitions, 68 flow [2023-08-26 09:47:34,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 15 transitions, 60 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 09:47:34,090 INFO L231 Difference]: Finished difference. Result has 17 places, 15 transitions, 34 flow [2023-08-26 09:47:34,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, 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} [2023-08-26 09:47:34,094 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -19 predicate places. [2023-08-26 09:47:34,094 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 15 transitions, 34 flow [2023-08-26 09:47:34,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 124.5) internal successors, (249), 2 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:34,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:47:34,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:47:34,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 09:47:34,095 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 09:47:34,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:47:34,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1136544362, now seen corresponding path program 1 times [2023-08-26 09:47:34,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:47:34,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402175153] [2023-08-26 09:47:34,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:47:34,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:47:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:47:34,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:34,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:47:34,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402175153] [2023-08-26 09:47:34,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402175153] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:47:34,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:47:34,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 09:47:34,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489245977] [2023-08-26 09:47:34,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:47:34,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 09:47:34,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:47:34,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 09:47:34,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 09:47:34,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-26 09:47:34,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 15 transitions, 34 flow. Second operand has 7 states, 7 states have (on average 105.85714285714286) internal successors, (741), 7 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:34,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:47:34,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-26 09:47:34,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:47:34,810 INFO L124 PetriNetUnfolderBase]: 62/128 cut-off events. [2023-08-26 09:47:34,810 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 09:47:34,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 128 events. 62/128 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 426 event pairs, 2 based on Foata normal form. 1/107 useless extension candidates. Maximal degree in co-relation 262. Up to 61 conditions per place. [2023-08-26 09:47:34,812 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 29 selfloop transitions, 4 changer transitions 11/44 dead transitions. [2023-08-26 09:47:34,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 44 transitions, 188 flow [2023-08-26 09:47:34,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 09:47:34,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 09:47:34,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 777 transitions. [2023-08-26 09:47:34,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378839590443686 [2023-08-26 09:47:34,816 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 777 transitions. [2023-08-26 09:47:34,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 777 transitions. [2023-08-26 09:47:34,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:47:34,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 777 transitions. [2023-08-26 09:47:34,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 111.0) internal successors, (777), 7 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:34,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 293.0) internal successors, (2344), 8 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:34,826 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 293.0) internal successors, (2344), 8 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:34,826 INFO L175 Difference]: Start difference. First operand has 17 places, 15 transitions, 34 flow. Second operand 7 states and 777 transitions. [2023-08-26 09:47:34,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 44 transitions, 188 flow [2023-08-26 09:47:34,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 44 transitions, 188 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 09:47:34,828 INFO L231 Difference]: Finished difference. Result has 28 places, 17 transitions, 70 flow [2023-08-26 09:47:34,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, 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=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=70, PETRI_PLACES=28, PETRI_TRANSITIONS=17} [2023-08-26 09:47:34,828 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -8 predicate places. [2023-08-26 09:47:34,829 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 70 flow [2023-08-26 09:47:34,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 105.85714285714286) internal successors, (741), 7 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:34,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:47:34,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:47:34,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 09:47:34,833 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 09:47:34,833 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:47:34,834 INFO L85 PathProgramCache]: Analyzing trace with hash 805751844, now seen corresponding path program 2 times [2023-08-26 09:47:34,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:47:34,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696817538] [2023-08-26 09:47:34,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:47:34,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:47:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:47:35,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:35,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:47:35,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696817538] [2023-08-26 09:47:35,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696817538] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:47:35,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:47:35,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 09:47:35,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135849193] [2023-08-26 09:47:35,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:47:35,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 09:47:35,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:47:35,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 09:47:35,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 09:47:35,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-26 09:47:35,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 70 flow. Second operand has 7 states, 7 states have (on average 105.85714285714286) internal successors, (741), 7 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:35,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:47:35,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-26 09:47:35,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:47:35,274 INFO L124 PetriNetUnfolderBase]: 58/122 cut-off events. [2023-08-26 09:47:35,274 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2023-08-26 09:47:35,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 122 events. 58/122 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 352 event pairs, 14 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 373. Up to 63 conditions per place. [2023-08-26 09:47:35,275 INFO L140 encePairwiseOnDemand]: 286/293 looper letters, 29 selfloop transitions, 8 changer transitions 8/45 dead transitions. [2023-08-26 09:47:35,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 45 transitions, 258 flow [2023-08-26 09:47:35,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 09:47:35,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 09:47:35,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 774 transitions. [2023-08-26 09:47:35,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3773768893222818 [2023-08-26 09:47:35,279 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 774 transitions. [2023-08-26 09:47:35,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 774 transitions. [2023-08-26 09:47:35,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:47:35,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 774 transitions. [2023-08-26 09:47:35,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.57142857142857) internal successors, (774), 7 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:35,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 293.0) internal successors, (2344), 8 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:35,286 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 293.0) internal successors, (2344), 8 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:35,286 INFO L175 Difference]: Start difference. First operand has 28 places, 17 transitions, 70 flow. Second operand 7 states and 774 transitions. [2023-08-26 09:47:35,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 45 transitions, 258 flow [2023-08-26 09:47:35,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 45 transitions, 231 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-08-26 09:47:35,288 INFO L231 Difference]: Finished difference. Result has 33 places, 23 transitions, 112 flow [2023-08-26 09:47:35,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=112, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2023-08-26 09:47:35,289 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -3 predicate places. [2023-08-26 09:47:35,289 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 112 flow [2023-08-26 09:47:35,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 105.85714285714286) internal successors, (741), 7 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:35,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:47:35,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:47:35,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 09:47:35,290 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 09:47:35,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:47:35,291 INFO L85 PathProgramCache]: Analyzing trace with hash 688208906, now seen corresponding path program 3 times [2023-08-26 09:47:35,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:47:35,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727002549] [2023-08-26 09:47:35,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:47:35,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:47:35,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:47:35,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:35,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:47:35,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727002549] [2023-08-26 09:47:35,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727002549] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:47:35,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:47:35,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 09:47:35,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715038480] [2023-08-26 09:47:35,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:47:35,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 09:47:35,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:47:35,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 09:47:35,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 09:47:35,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-26 09:47:35,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 112 flow. Second operand has 7 states, 7 states have (on average 105.85714285714286) internal successors, (741), 7 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:35,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:47:35,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-26 09:47:35,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:47:35,607 INFO L124 PetriNetUnfolderBase]: 64/134 cut-off events. [2023-08-26 09:47:35,607 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2023-08-26 09:47:35,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 134 events. 64/134 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 413 event pairs, 14 based on Foata normal form. 1/127 useless extension candidates. Maximal degree in co-relation 449. Up to 65 conditions per place. [2023-08-26 09:47:35,609 INFO L140 encePairwiseOnDemand]: 286/293 looper letters, 28 selfloop transitions, 10 changer transitions 9/47 dead transitions. [2023-08-26 09:47:35,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 290 flow [2023-08-26 09:47:35,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 09:47:35,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 09:47:35,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 772 transitions. [2023-08-26 09:47:35,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37640175524134567 [2023-08-26 09:47:35,612 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 772 transitions. [2023-08-26 09:47:35,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 772 transitions. [2023-08-26 09:47:35,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:47:35,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 772 transitions. [2023-08-26 09:47:35,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:35,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 293.0) internal successors, (2344), 8 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:35,618 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 293.0) internal successors, (2344), 8 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:35,618 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 112 flow. Second operand 7 states and 772 transitions. [2023-08-26 09:47:35,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 290 flow [2023-08-26 09:47:35,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 47 transitions, 280 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-26 09:47:35,621 INFO L231 Difference]: Finished difference. Result has 40 places, 26 transitions, 164 flow [2023-08-26 09:47:35,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=164, PETRI_PLACES=40, PETRI_TRANSITIONS=26} [2023-08-26 09:47:35,622 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 4 predicate places. [2023-08-26 09:47:35,622 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 26 transitions, 164 flow [2023-08-26 09:47:35,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 105.85714285714286) internal successors, (741), 7 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:35,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:47:35,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:47:35,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 09:47:35,623 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 09:47:35,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:47:35,623 INFO L85 PathProgramCache]: Analyzing trace with hash -61799644, now seen corresponding path program 4 times [2023-08-26 09:47:35,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:47:35,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590938724] [2023-08-26 09:47:35,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:47:35,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:47:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:47:35,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:35,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:47:35,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590938724] [2023-08-26 09:47:35,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590938724] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:47:35,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:47:35,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 09:47:35,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948177739] [2023-08-26 09:47:35,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:47:35,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 09:47:35,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:47:35,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 09:47:35,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-26 09:47:35,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-26 09:47:35,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 26 transitions, 164 flow. Second operand has 7 states, 7 states have (on average 105.85714285714286) internal successors, (741), 7 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:35,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:47:35,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-26 09:47:35,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:47:35,929 INFO L124 PetriNetUnfolderBase]: 59/125 cut-off events. [2023-08-26 09:47:35,930 INFO L125 PetriNetUnfolderBase]: For 253/253 co-relation queries the response was YES. [2023-08-26 09:47:35,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 487 conditions, 125 events. 59/125 cut-off events. For 253/253 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 368 event pairs, 18 based on Foata normal form. 1/118 useless extension candidates. Maximal degree in co-relation 472. Up to 65 conditions per place. [2023-08-26 09:47:35,933 INFO L140 encePairwiseOnDemand]: 286/293 looper letters, 25 selfloop transitions, 12 changer transitions 9/46 dead transitions. [2023-08-26 09:47:35,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 46 transitions, 336 flow [2023-08-26 09:47:35,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 09:47:35,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 09:47:35,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 770 transitions. [2023-08-26 09:47:35,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37542662116040953 [2023-08-26 09:47:35,936 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 770 transitions. [2023-08-26 09:47:35,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 770 transitions. [2023-08-26 09:47:35,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:47:35,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 770 transitions. [2023-08-26 09:47:35,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.0) internal successors, (770), 7 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:35,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 293.0) internal successors, (2344), 8 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:35,941 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 293.0) internal successors, (2344), 8 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:35,942 INFO L175 Difference]: Start difference. First operand has 40 places, 26 transitions, 164 flow. Second operand 7 states and 770 transitions. [2023-08-26 09:47:35,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 46 transitions, 336 flow [2023-08-26 09:47:35,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 46 transitions, 316 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-26 09:47:35,947 INFO L231 Difference]: Finished difference. Result has 43 places, 28 transitions, 207 flow [2023-08-26 09:47:35,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=207, PETRI_PLACES=43, PETRI_TRANSITIONS=28} [2023-08-26 09:47:35,949 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2023-08-26 09:47:35,949 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 28 transitions, 207 flow [2023-08-26 09:47:35,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 105.85714285714286) internal successors, (741), 7 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:35,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:47:35,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:47:35,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 09:47:35,950 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 09:47:35,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:47:35,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1198145606, now seen corresponding path program 5 times [2023-08-26 09:47:35,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:47:35,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778205088] [2023-08-26 09:47:35,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:47:35,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:47:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:47:36,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:36,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:47:36,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778205088] [2023-08-26 09:47:36,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778205088] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:47:36,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:47:36,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 09:47:36,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366984355] [2023-08-26 09:47:36,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:47:36,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 09:47:36,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:47:36,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 09:47:36,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-26 09:47:36,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-26 09:47:36,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 28 transitions, 207 flow. Second operand has 7 states, 7 states have (on average 105.85714285714286) internal successors, (741), 7 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:36,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:47:36,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-26 09:47:36,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:47:36,321 INFO L124 PetriNetUnfolderBase]: 57/121 cut-off events. [2023-08-26 09:47:36,321 INFO L125 PetriNetUnfolderBase]: For 252/252 co-relation queries the response was YES. [2023-08-26 09:47:36,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 121 events. 57/121 cut-off events. For 252/252 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 345 event pairs, 14 based on Foata normal form. 1/114 useless extension candidates. Maximal degree in co-relation 486. Up to 67 conditions per place. [2023-08-26 09:47:36,322 INFO L140 encePairwiseOnDemand]: 286/293 looper letters, 28 selfloop transitions, 13 changer transitions 5/46 dead transitions. [2023-08-26 09:47:36,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 46 transitions, 359 flow [2023-08-26 09:47:36,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 09:47:36,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 09:47:36,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 770 transitions. [2023-08-26 09:47:36,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37542662116040953 [2023-08-26 09:47:36,326 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 770 transitions. [2023-08-26 09:47:36,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 770 transitions. [2023-08-26 09:47:36,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:47:36,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 770 transitions. [2023-08-26 09:47:36,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.0) internal successors, (770), 7 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:36,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 293.0) internal successors, (2344), 8 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:36,333 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 293.0) internal successors, (2344), 8 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:36,333 INFO L175 Difference]: Start difference. First operand has 43 places, 28 transitions, 207 flow. Second operand 7 states and 770 transitions. [2023-08-26 09:47:36,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 46 transitions, 359 flow [2023-08-26 09:47:36,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 46 transitions, 325 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-26 09:47:36,336 INFO L231 Difference]: Finished difference. Result has 44 places, 29 transitions, 211 flow [2023-08-26 09:47:36,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=211, PETRI_PLACES=44, PETRI_TRANSITIONS=29} [2023-08-26 09:47:36,338 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 8 predicate places. [2023-08-26 09:47:36,340 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 29 transitions, 211 flow [2023-08-26 09:47:36,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 105.85714285714286) internal successors, (741), 7 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:36,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:47:36,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:47:36,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 09:47:36,341 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 09:47:36,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:47:36,342 INFO L85 PathProgramCache]: Analyzing trace with hash -34094014, now seen corresponding path program 6 times [2023-08-26 09:47:36,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:47:36,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441366224] [2023-08-26 09:47:36,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:47:36,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:47:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:47:36,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:36,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:47:36,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441366224] [2023-08-26 09:47:36,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441366224] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:47:36,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:47:36,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 09:47:36,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872209498] [2023-08-26 09:47:36,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:47:36,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 09:47:36,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:47:36,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 09:47:36,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-26 09:47:36,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-26 09:47:36,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 29 transitions, 211 flow. Second operand has 7 states, 7 states have (on average 105.85714285714286) internal successors, (741), 7 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:36,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:47:36,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-26 09:47:36,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:47:36,670 INFO L124 PetriNetUnfolderBase]: 56/114 cut-off events. [2023-08-26 09:47:36,670 INFO L125 PetriNetUnfolderBase]: For 325/325 co-relation queries the response was YES. [2023-08-26 09:47:36,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 114 events. 56/114 cut-off events. For 325/325 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 306 event pairs, 17 based on Foata normal form. 1/107 useless extension candidates. Maximal degree in co-relation 459. Up to 67 conditions per place. [2023-08-26 09:47:36,672 INFO L140 encePairwiseOnDemand]: 286/293 looper letters, 21 selfloop transitions, 13 changer transitions 8/42 dead transitions. [2023-08-26 09:47:36,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 42 transitions, 337 flow [2023-08-26 09:47:36,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 09:47:36,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 09:47:36,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 766 transitions. [2023-08-26 09:47:36,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3734763529985373 [2023-08-26 09:47:36,675 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 766 transitions. [2023-08-26 09:47:36,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 766 transitions. [2023-08-26 09:47:36,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:47:36,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 766 transitions. [2023-08-26 09:47:36,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.42857142857143) internal successors, (766), 7 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:36,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 293.0) internal successors, (2344), 8 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:36,680 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 293.0) internal successors, (2344), 8 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:36,680 INFO L175 Difference]: Start difference. First operand has 44 places, 29 transitions, 211 flow. Second operand 7 states and 766 transitions. [2023-08-26 09:47:36,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 42 transitions, 337 flow [2023-08-26 09:47:36,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 42 transitions, 292 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-26 09:47:36,683 INFO L231 Difference]: Finished difference. Result has 44 places, 28 transitions, 188 flow [2023-08-26 09:47:36,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=188, PETRI_PLACES=44, PETRI_TRANSITIONS=28} [2023-08-26 09:47:36,684 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 8 predicate places. [2023-08-26 09:47:36,684 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 28 transitions, 188 flow [2023-08-26 09:47:36,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 105.85714285714286) internal successors, (741), 7 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:36,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:47:36,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:47:36,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 09:47:36,687 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 09:47:36,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:47:36,687 INFO L85 PathProgramCache]: Analyzing trace with hash 436351151, now seen corresponding path program 1 times [2023-08-26 09:47:36,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:47:36,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824931223] [2023-08-26 09:47:36,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:47:36,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:47:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:47:36,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:36,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:47:36,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824931223] [2023-08-26 09:47:36,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824931223] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:47:36,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335766221] [2023-08-26 09:47:36,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:47:36,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:47:36,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:47:36,901 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:47:36,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 09:47:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:47:36,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-26 09:47:36,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:47:37,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:37,143 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:47:37,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:37,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335766221] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:47:37,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:47:37,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-26 09:47:37,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465384737] [2023-08-26 09:47:37,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:47:37,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-26 09:47:37,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:47:37,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-26 09:47:37,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2023-08-26 09:47:37,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-26 09:47:37,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 28 transitions, 188 flow. Second operand has 17 states, 17 states have (on average 105.88235294117646) internal successors, (1800), 17 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:37,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:47:37,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-26 09:47:37,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:47:37,791 INFO L124 PetriNetUnfolderBase]: 120/246 cut-off events. [2023-08-26 09:47:37,791 INFO L125 PetriNetUnfolderBase]: For 235/235 co-relation queries the response was YES. [2023-08-26 09:47:37,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 811 conditions, 246 events. 120/246 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 943 event pairs, 6 based on Foata normal form. 13/235 useless extension candidates. Maximal degree in co-relation 795. Up to 89 conditions per place. [2023-08-26 09:47:37,793 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 53 selfloop transitions, 22 changer transitions 25/100 dead transitions. [2023-08-26 09:47:37,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 100 transitions, 622 flow [2023-08-26 09:47:37,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-26 09:47:37,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-26 09:47:37,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1760 transitions. [2023-08-26 09:47:37,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37542662116040953 [2023-08-26 09:47:37,799 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1760 transitions. [2023-08-26 09:47:37,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1760 transitions. [2023-08-26 09:47:37,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:47:37,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1760 transitions. [2023-08-26 09:47:37,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 110.0) internal successors, (1760), 16 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:37,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 293.0) internal successors, (4981), 17 states have internal predecessors, (4981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:37,811 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 293.0) internal successors, (4981), 17 states have internal predecessors, (4981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:37,811 INFO L175 Difference]: Start difference. First operand has 44 places, 28 transitions, 188 flow. Second operand 16 states and 1760 transitions. [2023-08-26 09:47:37,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 100 transitions, 622 flow [2023-08-26 09:47:37,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 100 transitions, 575 flow, removed 9 selfloop flow, removed 8 redundant places. [2023-08-26 09:47:37,815 INFO L231 Difference]: Finished difference. Result has 60 places, 40 transitions, 309 flow [2023-08-26 09:47:37,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=309, PETRI_PLACES=60, PETRI_TRANSITIONS=40} [2023-08-26 09:47:37,815 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 24 predicate places. [2023-08-26 09:47:37,815 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 40 transitions, 309 flow [2023-08-26 09:47:37,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 105.88235294117646) internal successors, (1800), 17 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:37,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:47:37,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:47:37,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-26 09:47:38,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:47:38,023 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 09:47:38,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:47:38,023 INFO L85 PathProgramCache]: Analyzing trace with hash 360851905, now seen corresponding path program 2 times [2023-08-26 09:47:38,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:47:38,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552995145] [2023-08-26 09:47:38,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:47:38,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:47:38,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:47:38,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:38,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:47:38,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552995145] [2023-08-26 09:47:38,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552995145] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:47:38,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577835294] [2023-08-26 09:47:38,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:47:38,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:47:38,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:47:38,225 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:47:38,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 09:47:38,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:47:38,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:47:38,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-26 09:47:38,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:47:38,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:38,484 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:47:38,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:38,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577835294] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:47:38,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:47:38,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-26 09:47:38,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809793834] [2023-08-26 09:47:38,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:47:38,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-26 09:47:38,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:47:38,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-26 09:47:38,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2023-08-26 09:47:38,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-26 09:47:38,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 40 transitions, 309 flow. Second operand has 17 states, 17 states have (on average 105.88235294117646) internal successors, (1800), 17 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:38,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:47:38,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-26 09:47:38,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:47:39,501 INFO L124 PetriNetUnfolderBase]: 169/373 cut-off events. [2023-08-26 09:47:39,501 INFO L125 PetriNetUnfolderBase]: For 1019/1019 co-relation queries the response was YES. [2023-08-26 09:47:39,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1606 conditions, 373 events. 169/373 cut-off events. For 1019/1019 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1748 event pairs, 10 based on Foata normal form. 3/376 useless extension candidates. Maximal degree in co-relation 1583. Up to 143 conditions per place. [2023-08-26 09:47:39,505 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 90 selfloop transitions, 47 changer transitions 18/155 dead transitions. [2023-08-26 09:47:39,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 155 transitions, 1182 flow [2023-08-26 09:47:39,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-26 09:47:39,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-26 09:47:39,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2847 transitions. [2023-08-26 09:47:39,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37372013651877134 [2023-08-26 09:47:39,513 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2847 transitions. [2023-08-26 09:47:39,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2847 transitions. [2023-08-26 09:47:39,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:47:39,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2847 transitions. [2023-08-26 09:47:39,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 109.5) internal successors, (2847), 26 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:39,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 293.0) internal successors, (7911), 27 states have internal predecessors, (7911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:39,531 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 293.0) internal successors, (7911), 27 states have internal predecessors, (7911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:39,531 INFO L175 Difference]: Start difference. First operand has 60 places, 40 transitions, 309 flow. Second operand 26 states and 2847 transitions. [2023-08-26 09:47:39,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 155 transitions, 1182 flow [2023-08-26 09:47:39,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 155 transitions, 1027 flow, removed 71 selfloop flow, removed 7 redundant places. [2023-08-26 09:47:39,537 INFO L231 Difference]: Finished difference. Result has 84 places, 67 transitions, 598 flow [2023-08-26 09:47:39,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=598, PETRI_PLACES=84, PETRI_TRANSITIONS=67} [2023-08-26 09:47:39,538 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 48 predicate places. [2023-08-26 09:47:39,538 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 67 transitions, 598 flow [2023-08-26 09:47:39,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 105.88235294117646) internal successors, (1800), 17 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:39,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:47:39,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:47:39,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 09:47:39,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-08-26 09:47:39,745 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 09:47:39,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:47:39,745 INFO L85 PathProgramCache]: Analyzing trace with hash 222006625, now seen corresponding path program 3 times [2023-08-26 09:47:39,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:47:39,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116209503] [2023-08-26 09:47:39,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:47:39,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:47:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:47:39,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:39,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:47:39,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116209503] [2023-08-26 09:47:39,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116209503] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:47:39,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110169027] [2023-08-26 09:47:39,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:47:39,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:47:39,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:47:39,925 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:47:39,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 09:47:40,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 09:47:40,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:47:40,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-26 09:47:40,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:47:40,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:40,138 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:47:40,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:40,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110169027] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:47:40,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:47:40,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-26 09:47:40,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128518160] [2023-08-26 09:47:40,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:47:40,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-26 09:47:40,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:47:40,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-26 09:47:40,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2023-08-26 09:47:40,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-26 09:47:40,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 67 transitions, 598 flow. Second operand has 17 states, 17 states have (on average 106.0) internal successors, (1802), 17 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:40,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:47:40,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-26 09:47:40,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:47:41,014 INFO L124 PetriNetUnfolderBase]: 164/349 cut-off events. [2023-08-26 09:47:41,014 INFO L125 PetriNetUnfolderBase]: For 1888/1888 co-relation queries the response was YES. [2023-08-26 09:47:41,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1766 conditions, 349 events. 164/349 cut-off events. For 1888/1888 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1541 event pairs, 10 based on Foata normal form. 4/353 useless extension candidates. Maximal degree in co-relation 1737. Up to 89 conditions per place. [2023-08-26 09:47:41,018 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 65 selfloop transitions, 37 changer transitions 34/136 dead transitions. [2023-08-26 09:47:41,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 136 transitions, 1152 flow [2023-08-26 09:47:41,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-26 09:47:41,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-26 09:47:41,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2306 transitions. [2023-08-26 09:47:41,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3747765317731188 [2023-08-26 09:47:41,031 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2306 transitions. [2023-08-26 09:47:41,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2306 transitions. [2023-08-26 09:47:41,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:47:41,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2306 transitions. [2023-08-26 09:47:41,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 109.80952380952381) internal successors, (2306), 21 states have internal predecessors, (2306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:41,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 293.0) internal successors, (6446), 22 states have internal predecessors, (6446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:41,049 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 293.0) internal successors, (6446), 22 states have internal predecessors, (6446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:41,049 INFO L175 Difference]: Start difference. First operand has 84 places, 67 transitions, 598 flow. Second operand 21 states and 2306 transitions. [2023-08-26 09:47:41,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 136 transitions, 1152 flow [2023-08-26 09:47:41,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 136 transitions, 991 flow, removed 62 selfloop flow, removed 7 redundant places. [2023-08-26 09:47:41,062 INFO L231 Difference]: Finished difference. Result has 99 places, 61 transitions, 487 flow [2023-08-26 09:47:41,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=487, PETRI_PLACES=99, PETRI_TRANSITIONS=61} [2023-08-26 09:47:41,063 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 63 predicate places. [2023-08-26 09:47:41,063 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 61 transitions, 487 flow [2023-08-26 09:47:41,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 106.0) internal successors, (1802), 17 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:41,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:47:41,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:47:41,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 09:47:41,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:47:41,282 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 09:47:41,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:47:41,282 INFO L85 PathProgramCache]: Analyzing trace with hash -799713853, now seen corresponding path program 4 times [2023-08-26 09:47:41,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:47:41,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8791469] [2023-08-26 09:47:41,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:47:41,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:47:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:47:41,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:41,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:47:41,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8791469] [2023-08-26 09:47:41,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8791469] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:47:41,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881274899] [2023-08-26 09:47:41,474 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 09:47:41,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:47:41,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:47:41,477 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:47:41,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 09:47:41,567 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 09:47:41,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:47:41,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-26 09:47:41,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:47:41,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:41,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:47:41,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:41,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881274899] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:47:41,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:47:41,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-26 09:47:41,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604687813] [2023-08-26 09:47:41,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:47:41,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-26 09:47:41,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:47:41,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-26 09:47:41,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-08-26 09:47:41,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-26 09:47:41,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 61 transitions, 487 flow. Second operand has 16 states, 16 states have (on average 106.0) internal successors, (1696), 16 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:41,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:47:41,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-26 09:47:41,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:47:42,030 INFO L124 PetriNetUnfolderBase]: 171/345 cut-off events. [2023-08-26 09:47:42,030 INFO L125 PetriNetUnfolderBase]: For 2103/2103 co-relation queries the response was YES. [2023-08-26 09:47:42,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1727 conditions, 345 events. 171/345 cut-off events. For 2103/2103 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1414 event pairs, 16 based on Foata normal form. 3/348 useless extension candidates. Maximal degree in co-relation 1696. Up to 203 conditions per place. [2023-08-26 09:47:42,033 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 49 selfloop transitions, 26 changer transitions 26/101 dead transitions. [2023-08-26 09:47:42,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 101 transitions, 892 flow [2023-08-26 09:47:42,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-26 09:47:42,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-26 09:47:42,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1415 transitions. [2023-08-26 09:47:42,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37148857967970594 [2023-08-26 09:47:42,038 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1415 transitions. [2023-08-26 09:47:42,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1415 transitions. [2023-08-26 09:47:42,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:47:42,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1415 transitions. [2023-08-26 09:47:42,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 108.84615384615384) internal successors, (1415), 13 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:42,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 293.0) internal successors, (4102), 14 states have internal predecessors, (4102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:42,046 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 293.0) internal successors, (4102), 14 states have internal predecessors, (4102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:42,047 INFO L175 Difference]: Start difference. First operand has 99 places, 61 transitions, 487 flow. Second operand 13 states and 1415 transitions. [2023-08-26 09:47:42,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 101 transitions, 892 flow [2023-08-26 09:47:42,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 101 transitions, 754 flow, removed 16 selfloop flow, removed 22 redundant places. [2023-08-26 09:47:42,054 INFO L231 Difference]: Finished difference. Result has 81 places, 59 transitions, 476 flow [2023-08-26 09:47:42,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=476, PETRI_PLACES=81, PETRI_TRANSITIONS=59} [2023-08-26 09:47:42,054 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 45 predicate places. [2023-08-26 09:47:42,054 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 59 transitions, 476 flow [2023-08-26 09:47:42,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 106.0) internal successors, (1696), 16 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:42,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:47:42,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:47:42,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-26 09:47:42,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:47:42,261 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 09:47:42,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:47:42,262 INFO L85 PathProgramCache]: Analyzing trace with hash 58566031, now seen corresponding path program 5 times [2023-08-26 09:47:42,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:47:42,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415844010] [2023-08-26 09:47:42,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:47:42,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:47:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:47:42,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:42,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:47:42,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415844010] [2023-08-26 09:47:42,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415844010] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:47:42,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656122352] [2023-08-26 09:47:42,439 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 09:47:42,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:47:42,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:47:42,440 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:47:42,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-26 09:47:42,541 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:47:42,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:47:42,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-26 09:47:42,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:47:42,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:42,663 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:47:42,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:42,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656122352] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:47:42,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:47:42,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-26 09:47:42,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787823984] [2023-08-26 09:47:42,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:47:42,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-26 09:47:42,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:47:42,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-26 09:47:42,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-08-26 09:47:42,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-26 09:47:42,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 59 transitions, 476 flow. Second operand has 17 states, 17 states have (on average 105.88235294117646) internal successors, (1800), 17 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:42,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:47:42,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-26 09:47:42,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:47:43,400 INFO L124 PetriNetUnfolderBase]: 178/378 cut-off events. [2023-08-26 09:47:43,400 INFO L125 PetriNetUnfolderBase]: For 1576/1576 co-relation queries the response was YES. [2023-08-26 09:47:43,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1768 conditions, 378 events. 178/378 cut-off events. For 1576/1576 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1693 event pairs, 18 based on Foata normal form. 3/381 useless extension candidates. Maximal degree in co-relation 1740. Up to 211 conditions per place. [2023-08-26 09:47:43,404 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 72 selfloop transitions, 37 changer transitions 19/128 dead transitions. [2023-08-26 09:47:43,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 128 transitions, 1045 flow [2023-08-26 09:47:43,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-26 09:47:43,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-26 09:47:43,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2286 transitions. [2023-08-26 09:47:43,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37152608483666505 [2023-08-26 09:47:43,410 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2286 transitions. [2023-08-26 09:47:43,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2286 transitions. [2023-08-26 09:47:43,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:47:43,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2286 transitions. [2023-08-26 09:47:43,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 108.85714285714286) internal successors, (2286), 21 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:43,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 293.0) internal successors, (6446), 22 states have internal predecessors, (6446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:43,444 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 293.0) internal successors, (6446), 22 states have internal predecessors, (6446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:43,444 INFO L175 Difference]: Start difference. First operand has 81 places, 59 transitions, 476 flow. Second operand 21 states and 2286 transitions. [2023-08-26 09:47:43,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 128 transitions, 1045 flow [2023-08-26 09:47:43,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 128 transitions, 967 flow, removed 24 selfloop flow, removed 7 redundant places. [2023-08-26 09:47:43,452 INFO L231 Difference]: Finished difference. Result has 93 places, 70 transitions, 634 flow [2023-08-26 09:47:43,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=634, PETRI_PLACES=93, PETRI_TRANSITIONS=70} [2023-08-26 09:47:43,453 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 57 predicate places. [2023-08-26 09:47:43,453 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 70 transitions, 634 flow [2023-08-26 09:47:43,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 105.88235294117646) internal successors, (1800), 17 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:43,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:47:43,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:47:43,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-26 09:47:43,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-26 09:47:43,659 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 09:47:43,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:47:43,660 INFO L85 PathProgramCache]: Analyzing trace with hash -80279249, now seen corresponding path program 6 times [2023-08-26 09:47:43,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:47:43,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521224273] [2023-08-26 09:47:43,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:47:43,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:47:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:47:43,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:43,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:47:43,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521224273] [2023-08-26 09:47:43,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521224273] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:47:43,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560653382] [2023-08-26 09:47:43,834 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 09:47:43,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:47:43,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:47:43,835 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) [2023-08-26 09:47:43,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-26 09:47:43,927 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-26 09:47:43,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:47:43,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-26 09:47:43,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:47:44,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:44,037 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:47:44,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:44,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560653382] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:47:44,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:47:44,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-26 09:47:44,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53647140] [2023-08-26 09:47:44,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:47:44,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-26 09:47:44,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:47:44,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-26 09:47:44,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2023-08-26 09:47:44,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-26 09:47:44,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 70 transitions, 634 flow. Second operand has 17 states, 17 states have (on average 106.0) internal successors, (1802), 17 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:44,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:47:44,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-26 09:47:44,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:47:44,755 INFO L124 PetriNetUnfolderBase]: 175/362 cut-off events. [2023-08-26 09:47:44,755 INFO L125 PetriNetUnfolderBase]: For 1379/1379 co-relation queries the response was YES. [2023-08-26 09:47:44,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1749 conditions, 362 events. 175/362 cut-off events. For 1379/1379 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1563 event pairs, 20 based on Foata normal form. 4/366 useless extension candidates. Maximal degree in co-relation 1715. Up to 207 conditions per place. [2023-08-26 09:47:44,758 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 53 selfloop transitions, 31 changer transitions 32/116 dead transitions. [2023-08-26 09:47:44,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 116 transitions, 1006 flow [2023-08-26 09:47:44,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-26 09:47:44,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-26 09:47:44,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1962 transitions. [2023-08-26 09:47:44,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3720136518771331 [2023-08-26 09:47:44,764 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1962 transitions. [2023-08-26 09:47:44,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1962 transitions. [2023-08-26 09:47:44,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:47:44,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1962 transitions. [2023-08-26 09:47:44,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 109.0) internal successors, (1962), 18 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:44,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 293.0) internal successors, (5567), 19 states have internal predecessors, (5567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:44,776 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 293.0) internal successors, (5567), 19 states have internal predecessors, (5567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:44,776 INFO L175 Difference]: Start difference. First operand has 93 places, 70 transitions, 634 flow. Second operand 18 states and 1962 transitions. [2023-08-26 09:47:44,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 116 transitions, 1006 flow [2023-08-26 09:47:44,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 116 transitions, 877 flow, removed 32 selfloop flow, removed 13 redundant places. [2023-08-26 09:47:44,787 INFO L231 Difference]: Finished difference. Result has 96 places, 65 transitions, 558 flow [2023-08-26 09:47:44,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=558, PETRI_PLACES=96, PETRI_TRANSITIONS=65} [2023-08-26 09:47:44,788 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 60 predicate places. [2023-08-26 09:47:44,788 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 65 transitions, 558 flow [2023-08-26 09:47:44,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 106.0) internal successors, (1802), 17 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:44,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:47:44,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:47:44,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-26 09:47:44,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:47:44,994 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 09:47:44,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:47:44,995 INFO L85 PathProgramCache]: Analyzing trace with hash -480762315, now seen corresponding path program 7 times [2023-08-26 09:47:44,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:47:44,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545588547] [2023-08-26 09:47:44,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:47:44,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:47:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:47:45,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:45,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:47:45,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545588547] [2023-08-26 09:47:45,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545588547] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:47:45,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597616442] [2023-08-26 09:47:45,133 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 09:47:45,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:47:45,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:47:45,137 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) [2023-08-26 09:47:45,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-26 09:47:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:47:45,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-26 09:47:45,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:47:45,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:45,339 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:47:45,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:45,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597616442] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:47:45,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:47:45,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-26 09:47:45,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495180402] [2023-08-26 09:47:45,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:47:45,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-26 09:47:45,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:47:45,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-26 09:47:45,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-08-26 09:47:45,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-26 09:47:45,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 65 transitions, 558 flow. Second operand has 16 states, 16 states have (on average 106.0625) internal successors, (1697), 16 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:45,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:47:45,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-26 09:47:45,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:47:45,638 INFO L124 PetriNetUnfolderBase]: 162/331 cut-off events. [2023-08-26 09:47:45,638 INFO L125 PetriNetUnfolderBase]: For 970/970 co-relation queries the response was YES. [2023-08-26 09:47:45,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1533 conditions, 331 events. 162/331 cut-off events. For 970/970 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1359 event pairs, 21 based on Foata normal form. 2/333 useless extension candidates. Maximal degree in co-relation 1500. Up to 282 conditions per place. [2023-08-26 09:47:45,640 INFO L140 encePairwiseOnDemand]: 286/293 looper letters, 59 selfloop transitions, 8 changer transitions 18/85 dead transitions. [2023-08-26 09:47:45,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 85 transitions, 798 flow [2023-08-26 09:47:45,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 09:47:45,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 09:47:45,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1085 transitions. [2023-08-26 09:47:45,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3703071672354949 [2023-08-26 09:47:45,642 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1085 transitions. [2023-08-26 09:47:45,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1085 transitions. [2023-08-26 09:47:45,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:47:45,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1085 transitions. [2023-08-26 09:47:45,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 108.5) internal successors, (1085), 10 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:45,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 293.0) internal successors, (3223), 11 states have internal predecessors, (3223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:45,647 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 293.0) internal successors, (3223), 11 states have internal predecessors, (3223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:45,647 INFO L175 Difference]: Start difference. First operand has 96 places, 65 transitions, 558 flow. Second operand 10 states and 1085 transitions. [2023-08-26 09:47:45,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 85 transitions, 798 flow [2023-08-26 09:47:45,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 85 transitions, 706 flow, removed 12 selfloop flow, removed 18 redundant places. [2023-08-26 09:47:45,655 INFO L231 Difference]: Finished difference. Result has 81 places, 62 transitions, 471 flow [2023-08-26 09:47:45,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=471, PETRI_PLACES=81, PETRI_TRANSITIONS=62} [2023-08-26 09:47:45,655 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 45 predicate places. [2023-08-26 09:47:45,656 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 62 transitions, 471 flow [2023-08-26 09:47:45,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 106.0625) internal successors, (1697), 16 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:45,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:47:45,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:47:45,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-26 09:47:45,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:47:45,861 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 09:47:45,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:47:45,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1769375773, now seen corresponding path program 8 times [2023-08-26 09:47:45,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:47:45,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095096335] [2023-08-26 09:47:45,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:47:45,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:47:45,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:47:46,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:46,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:47:46,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095096335] [2023-08-26 09:47:46,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095096335] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:47:46,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489647297] [2023-08-26 09:47:46,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:47:46,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:47:46,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:47:46,007 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) [2023-08-26 09:47:46,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-26 09:47:46,112 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:47:46,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:47:46,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-26 09:47:46,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:47:46,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:46,210 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:47:46,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:46,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489647297] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:47:46,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:47:46,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-26 09:47:46,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423870571] [2023-08-26 09:47:46,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:47:46,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-26 09:47:46,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:47:46,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-26 09:47:46,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2023-08-26 09:47:46,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-26 09:47:46,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 62 transitions, 471 flow. Second operand has 17 states, 17 states have (on average 105.94117647058823) internal successors, (1801), 17 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:46,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:47:46,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-26 09:47:46,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:47:46,523 INFO L124 PetriNetUnfolderBase]: 158/323 cut-off events. [2023-08-26 09:47:46,523 INFO L125 PetriNetUnfolderBase]: For 776/776 co-relation queries the response was YES. [2023-08-26 09:47:46,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1393 conditions, 323 events. 158/323 cut-off events. For 776/776 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1291 event pairs, 23 based on Foata normal form. 2/325 useless extension candidates. Maximal degree in co-relation 1364. Up to 262 conditions per place. [2023-08-26 09:47:46,526 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 58 selfloop transitions, 14 changer transitions 20/92 dead transitions. [2023-08-26 09:47:46,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 92 transitions, 801 flow [2023-08-26 09:47:46,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 09:47:46,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 09:47:46,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1300 transitions. [2023-08-26 09:47:46,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36973833902161546 [2023-08-26 09:47:46,528 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1300 transitions. [2023-08-26 09:47:46,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1300 transitions. [2023-08-26 09:47:46,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:47:46,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1300 transitions. [2023-08-26 09:47:46,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 108.33333333333333) internal successors, (1300), 12 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:46,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 293.0) internal successors, (3809), 13 states have internal predecessors, (3809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:46,534 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 293.0) internal successors, (3809), 13 states have internal predecessors, (3809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:46,534 INFO L175 Difference]: Start difference. First operand has 81 places, 62 transitions, 471 flow. Second operand 12 states and 1300 transitions. [2023-08-26 09:47:46,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 92 transitions, 801 flow [2023-08-26 09:47:46,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 92 transitions, 749 flow, removed 15 selfloop flow, removed 11 redundant places. [2023-08-26 09:47:46,540 INFO L231 Difference]: Finished difference. Result has 79 places, 63 transitions, 499 flow [2023-08-26 09:47:46,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=499, PETRI_PLACES=79, PETRI_TRANSITIONS=63} [2023-08-26 09:47:46,540 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 43 predicate places. [2023-08-26 09:47:46,540 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 63 transitions, 499 flow [2023-08-26 09:47:46,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 105.94117647058823) internal successors, (1801), 17 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:46,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:47:46,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:47:46,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-26 09:47:46,746 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,SelfDestructingSolverStorable14 [2023-08-26 09:47:46,747 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 09:47:46,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:47:46,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1049624039, now seen corresponding path program 9 times [2023-08-26 09:47:46,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:47:46,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203842886] [2023-08-26 09:47:46,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:47:46,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:47:46,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:47:46,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:46,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:47:46,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203842886] [2023-08-26 09:47:46,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203842886] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:47:46,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633865827] [2023-08-26 09:47:46,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:47:46,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:47:46,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:47:46,888 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) [2023-08-26 09:47:46,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-26 09:47:46,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 09:47:46,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:47:46,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-26 09:47:46,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:47:47,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:47,117 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:47:47,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:47,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633865827] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:47:47,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:47:47,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-26 09:47:47,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337861312] [2023-08-26 09:47:47,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:47:47,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-26 09:47:47,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:47:47,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-26 09:47:47,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-08-26 09:47:47,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-26 09:47:47,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 63 transitions, 499 flow. Second operand has 18 states, 18 states have (on average 105.88888888888889) internal successors, (1906), 18 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:47,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:47:47,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-26 09:47:47,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:47:47,797 INFO L124 PetriNetUnfolderBase]: 141/298 cut-off events. [2023-08-26 09:47:47,797 INFO L125 PetriNetUnfolderBase]: For 702/702 co-relation queries the response was YES. [2023-08-26 09:47:47,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1296 conditions, 298 events. 141/298 cut-off events. For 702/702 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1222 event pairs, 13 based on Foata normal form. 4/302 useless extension candidates. Maximal degree in co-relation 1269. Up to 183 conditions per place. [2023-08-26 09:47:47,800 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 63 selfloop transitions, 20 changer transitions 20/103 dead transitions. [2023-08-26 09:47:47,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 103 transitions, 856 flow [2023-08-26 09:47:47,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-26 09:47:47,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-26 09:47:47,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1736 transitions. [2023-08-26 09:47:47,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3703071672354949 [2023-08-26 09:47:47,803 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1736 transitions. [2023-08-26 09:47:47,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1736 transitions. [2023-08-26 09:47:47,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:47:47,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1736 transitions. [2023-08-26 09:47:47,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 108.5) internal successors, (1736), 16 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:47,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 293.0) internal successors, (4981), 17 states have internal predecessors, (4981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:47,814 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 293.0) internal successors, (4981), 17 states have internal predecessors, (4981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:47,814 INFO L175 Difference]: Start difference. First operand has 79 places, 63 transitions, 499 flow. Second operand 16 states and 1736 transitions. [2023-08-26 09:47:47,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 103 transitions, 856 flow [2023-08-26 09:47:47,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 103 transitions, 830 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-08-26 09:47:47,820 INFO L231 Difference]: Finished difference. Result has 88 places, 65 transitions, 569 flow [2023-08-26 09:47:47,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=569, PETRI_PLACES=88, PETRI_TRANSITIONS=65} [2023-08-26 09:47:47,821 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 52 predicate places. [2023-08-26 09:47:47,821 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 65 transitions, 569 flow [2023-08-26 09:47:47,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 105.88888888888889) internal successors, (1906), 18 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:47,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:47:47,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:47:47,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-26 09:47:48,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-26 09:47:48,032 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 09:47:48,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:47:48,032 INFO L85 PathProgramCache]: Analyzing trace with hash -911095889, now seen corresponding path program 10 times [2023-08-26 09:47:48,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:47:48,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625816721] [2023-08-26 09:47:48,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:47:48,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:47:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:47:48,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:48,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:47:48,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625816721] [2023-08-26 09:47:48,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625816721] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:47:48,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899101362] [2023-08-26 09:47:48,186 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 09:47:48,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:47:48,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:47:48,193 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) [2023-08-26 09:47:48,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-26 09:47:48,288 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 09:47:48,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:47:48,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-26 09:47:48,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:47:48,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:48,419 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:47:48,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:48,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899101362] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:47:48,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:47:48,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-26 09:47:48,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638847925] [2023-08-26 09:47:48,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:47:48,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-26 09:47:48,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:47:48,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-26 09:47:48,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2023-08-26 09:47:48,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-26 09:47:48,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 65 transitions, 569 flow. Second operand has 18 states, 18 states have (on average 105.83333333333333) internal successors, (1905), 18 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:48,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:47:48,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-26 09:47:48,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:47:49,006 INFO L124 PetriNetUnfolderBase]: 125/251 cut-off events. [2023-08-26 09:47:49,006 INFO L125 PetriNetUnfolderBase]: For 924/924 co-relation queries the response was YES. [2023-08-26 09:47:49,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1228 conditions, 251 events. 125/251 cut-off events. For 924/924 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 901 event pairs, 13 based on Foata normal form. 3/254 useless extension candidates. Maximal degree in co-relation 1197. Up to 183 conditions per place. [2023-08-26 09:47:49,008 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 57 selfloop transitions, 15 changer transitions 22/94 dead transitions. [2023-08-26 09:47:49,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 94 transitions, 848 flow [2023-08-26 09:47:49,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-26 09:47:49,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-26 09:47:49,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1626 transitions. [2023-08-26 09:47:49,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3699658703071672 [2023-08-26 09:47:49,011 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1626 transitions. [2023-08-26 09:47:49,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1626 transitions. [2023-08-26 09:47:49,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:47:49,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1626 transitions. [2023-08-26 09:47:49,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 108.4) internal successors, (1626), 15 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:49,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 293.0) internal successors, (4688), 16 states have internal predecessors, (4688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:49,017 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 293.0) internal successors, (4688), 16 states have internal predecessors, (4688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:49,017 INFO L175 Difference]: Start difference. First operand has 88 places, 65 transitions, 569 flow. Second operand 15 states and 1626 transitions. [2023-08-26 09:47:49,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 94 transitions, 848 flow [2023-08-26 09:47:49,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 94 transitions, 762 flow, removed 24 selfloop flow, removed 8 redundant places. [2023-08-26 09:47:49,023 INFO L231 Difference]: Finished difference. Result has 87 places, 59 transitions, 478 flow [2023-08-26 09:47:49,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=478, PETRI_PLACES=87, PETRI_TRANSITIONS=59} [2023-08-26 09:47:49,023 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 51 predicate places. [2023-08-26 09:47:49,023 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 59 transitions, 478 flow [2023-08-26 09:47:49,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 105.83333333333333) internal successors, (1905), 18 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:49,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:47:49,024 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:47:49,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-26 09:47:49,229 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,SelfDestructingSolverStorable16 [2023-08-26 09:47:49,229 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 09:47:49,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:47:49,230 INFO L85 PathProgramCache]: Analyzing trace with hash 683363501, now seen corresponding path program 1 times [2023-08-26 09:47:49,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:47:49,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231733116] [2023-08-26 09:47:49,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:47:49,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:47:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:47:49,382 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:49,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:47:49,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231733116] [2023-08-26 09:47:49,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231733116] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:47:49,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551734468] [2023-08-26 09:47:49,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:47:49,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:47:49,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:47:49,384 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) [2023-08-26 09:47:49,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-26 09:47:49,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:47:49,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:47:49,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:47:49,628 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:49,628 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:47:49,745 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:47:49,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551734468] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:47:49,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:47:49,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2023-08-26 09:47:49,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139750233] [2023-08-26 09:47:49,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:47:49,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-26 09:47:49,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:47:49,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-26 09:47:49,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2023-08-26 09:47:49,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-26 09:47:49,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 59 transitions, 478 flow. Second operand has 19 states, 19 states have (on average 105.94736842105263) internal successors, (2013), 19 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:49,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:47:49,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-26 09:47:49,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:47:50,181 INFO L124 PetriNetUnfolderBase]: 172/334 cut-off events. [2023-08-26 09:47:50,182 INFO L125 PetriNetUnfolderBase]: For 1055/1055 co-relation queries the response was YES. [2023-08-26 09:47:50,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1543 conditions, 334 events. 172/334 cut-off events. For 1055/1055 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1306 event pairs, 15 based on Foata normal form. 7/341 useless extension candidates. Maximal degree in co-relation 1514. Up to 115 conditions per place. [2023-08-26 09:47:50,184 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 45 selfloop transitions, 43 changer transitions 42/130 dead transitions. [2023-08-26 09:47:50,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 130 transitions, 1055 flow [2023-08-26 09:47:50,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-26 09:47:50,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-26 09:47:50,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1863 transitions. [2023-08-26 09:47:50,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37402128086729575 [2023-08-26 09:47:50,192 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1863 transitions. [2023-08-26 09:47:50,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1863 transitions. [2023-08-26 09:47:50,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:47:50,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1863 transitions. [2023-08-26 09:47:50,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 109.58823529411765) internal successors, (1863), 17 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:50,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 293.0) internal successors, (5274), 18 states have internal predecessors, (5274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:50,202 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 293.0) internal successors, (5274), 18 states have internal predecessors, (5274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:50,202 INFO L175 Difference]: Start difference. First operand has 87 places, 59 transitions, 478 flow. Second operand 17 states and 1863 transitions. [2023-08-26 09:47:50,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 130 transitions, 1055 flow [2023-08-26 09:47:50,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 130 transitions, 957 flow, removed 20 selfloop flow, removed 13 redundant places. [2023-08-26 09:47:50,210 INFO L231 Difference]: Finished difference. Result has 89 places, 67 transitions, 597 flow [2023-08-26 09:47:50,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=597, PETRI_PLACES=89, PETRI_TRANSITIONS=67} [2023-08-26 09:47:50,211 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 53 predicate places. [2023-08-26 09:47:50,212 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 67 transitions, 597 flow [2023-08-26 09:47:50,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 105.94736842105263) internal successors, (2013), 19 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:50,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:47:50,213 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:47:50,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-26 09:47:50,417 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,SelfDestructingSolverStorable17 [2023-08-26 09:47:50,418 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 09:47:50,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:47:50,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1119144287, now seen corresponding path program 2 times [2023-08-26 09:47:50,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:47:50,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147133106] [2023-08-26 09:47:50,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:47:50,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:47:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:47:50,592 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:50,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:47:50,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147133106] [2023-08-26 09:47:50,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147133106] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:47:50,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719687648] [2023-08-26 09:47:50,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:47:50,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:47:50,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:47:50,594 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) [2023-08-26 09:47:50,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-26 09:47:50,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:47:50,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:47:50,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:47:50,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:47:50,841 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:50,841 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:47:50,976 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:47:50,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719687648] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:47:50,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:47:50,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-26 09:47:50,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132587102] [2023-08-26 09:47:50,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:47:50,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-26 09:47:50,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:47:50,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-26 09:47:50,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2023-08-26 09:47:50,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-26 09:47:50,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 67 transitions, 597 flow. Second operand has 20 states, 20 states have (on average 105.65) internal successors, (2113), 20 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:50,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:47:50,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-26 09:47:50,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:47:51,787 INFO L124 PetriNetUnfolderBase]: 195/377 cut-off events. [2023-08-26 09:47:51,787 INFO L125 PetriNetUnfolderBase]: For 2094/2094 co-relation queries the response was YES. [2023-08-26 09:47:51,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1977 conditions, 377 events. 195/377 cut-off events. For 2094/2094 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1498 event pairs, 5 based on Foata normal form. 9/386 useless extension candidates. Maximal degree in co-relation 1945. Up to 113 conditions per place. [2023-08-26 09:47:51,791 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 72 selfloop transitions, 71 changer transitions 16/159 dead transitions. [2023-08-26 09:47:51,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 159 transitions, 1454 flow [2023-08-26 09:47:51,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-26 09:47:51,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-26 09:47:51,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3045 transitions. [2023-08-26 09:47:51,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371160409556314 [2023-08-26 09:47:51,794 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3045 transitions. [2023-08-26 09:47:51,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3045 transitions. [2023-08-26 09:47:51,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:47:51,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3045 transitions. [2023-08-26 09:47:51,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 108.75) internal successors, (3045), 28 states have internal predecessors, (3045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:51,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 293.0) internal successors, (8497), 29 states have internal predecessors, (8497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:51,805 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 293.0) internal successors, (8497), 29 states have internal predecessors, (8497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:51,805 INFO L175 Difference]: Start difference. First operand has 89 places, 67 transitions, 597 flow. Second operand 28 states and 3045 transitions. [2023-08-26 09:47:51,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 159 transitions, 1454 flow [2023-08-26 09:47:51,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 159 transitions, 1284 flow, removed 38 selfloop flow, removed 13 redundant places. [2023-08-26 09:47:51,813 INFO L231 Difference]: Finished difference. Result has 98 places, 93 transitions, 923 flow [2023-08-26 09:47:51,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=923, PETRI_PLACES=98, PETRI_TRANSITIONS=93} [2023-08-26 09:47:51,814 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 62 predicate places. [2023-08-26 09:47:51,814 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 93 transitions, 923 flow [2023-08-26 09:47:51,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 105.65) internal successors, (2113), 20 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:51,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:47:51,815 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:47:51,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-26 09:47:52,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:47:52,021 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 09:47:52,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:47:52,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1537597873, now seen corresponding path program 3 times [2023-08-26 09:47:52,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:47:52,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407942098] [2023-08-26 09:47:52,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:47:52,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:47:52,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:47:52,185 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:52,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:47:52,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407942098] [2023-08-26 09:47:52,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407942098] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:47:52,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094809802] [2023-08-26 09:47:52,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:47:52,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:47:52,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:47:52,187 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) [2023-08-26 09:47:52,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-26 09:47:52,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 09:47:52,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:47:52,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:47:52,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:47:52,406 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:52,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:47:52,508 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:47:52,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094809802] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:47:52,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:47:52,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-26 09:47:52,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887258112] [2023-08-26 09:47:52,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:47:52,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-26 09:47:52,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:47:52,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-26 09:47:52,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2023-08-26 09:47:52,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-26 09:47:52,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 93 transitions, 923 flow. Second operand has 20 states, 20 states have (on average 105.75) internal successors, (2115), 20 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:52,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:47:52,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-26 09:47:52,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:47:52,948 INFO L124 PetriNetUnfolderBase]: 198/382 cut-off events. [2023-08-26 09:47:52,948 INFO L125 PetriNetUnfolderBase]: For 1543/1543 co-relation queries the response was YES. [2023-08-26 09:47:52,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2005 conditions, 382 events. 198/382 cut-off events. For 1543/1543 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1536 event pairs, 6 based on Foata normal form. 7/389 useless extension candidates. Maximal degree in co-relation 1976. Up to 143 conditions per place. [2023-08-26 09:47:52,951 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 56 selfloop transitions, 56 changer transitions 41/153 dead transitions. [2023-08-26 09:47:52,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 153 transitions, 1460 flow [2023-08-26 09:47:52,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-26 09:47:52,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-26 09:47:52,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2397 transitions. [2023-08-26 09:47:52,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37185851690971145 [2023-08-26 09:47:52,955 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2397 transitions. [2023-08-26 09:47:52,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2397 transitions. [2023-08-26 09:47:52,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:47:52,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2397 transitions. [2023-08-26 09:47:52,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 108.95454545454545) internal successors, (2397), 22 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:52,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 293.0) internal successors, (6739), 23 states have internal predecessors, (6739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:52,968 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 293.0) internal successors, (6739), 23 states have internal predecessors, (6739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:52,968 INFO L175 Difference]: Start difference. First operand has 98 places, 93 transitions, 923 flow. Second operand 22 states and 2397 transitions. [2023-08-26 09:47:52,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 153 transitions, 1460 flow [2023-08-26 09:47:52,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 153 transitions, 1112 flow, removed 122 selfloop flow, removed 14 redundant places. [2023-08-26 09:47:52,979 INFO L231 Difference]: Finished difference. Result has 104 places, 85 transitions, 669 flow [2023-08-26 09:47:52,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=617, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=669, PETRI_PLACES=104, PETRI_TRANSITIONS=85} [2023-08-26 09:47:52,980 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 68 predicate places. [2023-08-26 09:47:52,980 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 85 transitions, 669 flow [2023-08-26 09:47:52,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 105.75) internal successors, (2115), 20 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:52,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:47:52,980 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:47:52,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-26 09:47:53,180 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,SelfDestructingSolverStorable19 [2023-08-26 09:47:53,181 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 09:47:53,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:47:53,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1257989567, now seen corresponding path program 4 times [2023-08-26 09:47:53,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:47:53,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794174880] [2023-08-26 09:47:53,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:47:53,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:47:53,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:47:53,336 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:53,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:47:53,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794174880] [2023-08-26 09:47:53,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794174880] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:47:53,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612428270] [2023-08-26 09:47:53,337 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 09:47:53,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:47:53,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:47:53,338 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) [2023-08-26 09:47:53,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-26 09:47:53,450 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 09:47:53,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:47:53,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:47:53,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:47:53,595 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:53,595 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:47:53,710 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:47:53,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612428270] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:47:53,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:47:53,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-26 09:47:53,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209257239] [2023-08-26 09:47:53,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:47:53,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-26 09:47:53,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:47:53,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-26 09:47:53,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2023-08-26 09:47:53,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-26 09:47:53,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 85 transitions, 669 flow. Second operand has 20 states, 20 states have (on average 105.75) internal successors, (2115), 20 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:53,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:47:53,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-26 09:47:53,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:47:54,384 INFO L124 PetriNetUnfolderBase]: 162/310 cut-off events. [2023-08-26 09:47:54,385 INFO L125 PetriNetUnfolderBase]: For 607/607 co-relation queries the response was YES. [2023-08-26 09:47:54,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1367 conditions, 310 events. 162/310 cut-off events. For 607/607 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1136 event pairs, 9 based on Foata normal form. 3/313 useless extension candidates. Maximal degree in co-relation 1342. Up to 113 conditions per place. [2023-08-26 09:47:54,387 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 52 selfloop transitions, 56 changer transitions 28/136 dead transitions. [2023-08-26 09:47:54,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 136 transitions, 1079 flow [2023-08-26 09:47:54,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-26 09:47:54,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-26 09:47:54,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2817 transitions. [2023-08-26 09:47:54,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36978209503806775 [2023-08-26 09:47:54,391 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2817 transitions. [2023-08-26 09:47:54,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2817 transitions. [2023-08-26 09:47:54,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:47:54,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2817 transitions. [2023-08-26 09:47:54,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 108.34615384615384) internal successors, (2817), 26 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:54,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 293.0) internal successors, (7911), 27 states have internal predecessors, (7911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:54,400 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 293.0) internal successors, (7911), 27 states have internal predecessors, (7911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:54,400 INFO L175 Difference]: Start difference. First operand has 104 places, 85 transitions, 669 flow. Second operand 26 states and 2817 transitions. [2023-08-26 09:47:54,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 136 transitions, 1079 flow [2023-08-26 09:47:54,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 136 transitions, 954 flow, removed 8 selfloop flow, removed 17 redundant places. [2023-08-26 09:47:54,405 INFO L231 Difference]: Finished difference. Result has 100 places, 77 transitions, 605 flow [2023-08-26 09:47:54,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=605, PETRI_PLACES=100, PETRI_TRANSITIONS=77} [2023-08-26 09:47:54,406 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 64 predicate places. [2023-08-26 09:47:54,406 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 77 transitions, 605 flow [2023-08-26 09:47:54,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 105.75) internal successors, (2115), 20 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:54,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:47:54,406 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:47:54,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-26 09:47:54,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:47:54,611 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 09:47:54,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:47:54,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1847742941, now seen corresponding path program 5 times [2023-08-26 09:47:54,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:47:54,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547059396] [2023-08-26 09:47:54,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:47:54,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:47:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:47:54,769 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:54,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:47:54,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547059396] [2023-08-26 09:47:54,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547059396] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:47:54,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38069058] [2023-08-26 09:47:54,770 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 09:47:54,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:47:54,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:47:54,773 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) [2023-08-26 09:47:54,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-26 09:47:54,861 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-26 09:47:54,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:47:54,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:47:54,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:47:55,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:55,015 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:47:55,095 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:55,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38069058] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:47:55,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:47:55,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2023-08-26 09:47:55,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109042312] [2023-08-26 09:47:55,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:47:55,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-26 09:47:55,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:47:55,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-26 09:47:55,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2023-08-26 09:47:55,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-26 09:47:55,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 77 transitions, 605 flow. Second operand has 19 states, 19 states have (on average 105.73684210526316) internal successors, (2009), 19 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:55,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:47:55,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-26 09:47:55,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:47:55,386 INFO L124 PetriNetUnfolderBase]: 166/319 cut-off events. [2023-08-26 09:47:55,387 INFO L125 PetriNetUnfolderBase]: For 491/491 co-relation queries the response was YES. [2023-08-26 09:47:55,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1369 conditions, 319 events. 166/319 cut-off events. For 491/491 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1180 event pairs, 9 based on Foata normal form. 4/323 useless extension candidates. Maximal degree in co-relation 1348. Up to 99 conditions per place. [2023-08-26 09:47:55,389 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 52 selfloop transitions, 38 changer transitions 33/123 dead transitions. [2023-08-26 09:47:55,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 123 transitions, 1048 flow [2023-08-26 09:47:55,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-26 09:47:55,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-26 09:47:55,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1842 transitions. [2023-08-26 09:47:55,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3698052599879542 [2023-08-26 09:47:55,396 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1842 transitions. [2023-08-26 09:47:55,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1842 transitions. [2023-08-26 09:47:55,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:47:55,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1842 transitions. [2023-08-26 09:47:55,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 108.3529411764706) internal successors, (1842), 17 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:55,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 293.0) internal successors, (5274), 18 states have internal predecessors, (5274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:55,402 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 293.0) internal successors, (5274), 18 states have internal predecessors, (5274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:55,402 INFO L175 Difference]: Start difference. First operand has 100 places, 77 transitions, 605 flow. Second operand 17 states and 1842 transitions. [2023-08-26 09:47:55,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 123 transitions, 1048 flow [2023-08-26 09:47:55,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 123 transitions, 906 flow, removed 5 selfloop flow, removed 23 redundant places. [2023-08-26 09:47:55,407 INFO L231 Difference]: Finished difference. Result has 91 places, 69 transitions, 560 flow [2023-08-26 09:47:55,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=560, PETRI_PLACES=91, PETRI_TRANSITIONS=69} [2023-08-26 09:47:55,407 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 55 predicate places. [2023-08-26 09:47:55,407 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 69 transitions, 560 flow [2023-08-26 09:47:55,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 105.73684210526316) internal successors, (2009), 19 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:55,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:47:55,408 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:47:55,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-26 09:47:55,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:47:55,613 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 09:47:55,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:47:55,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1017168687, now seen corresponding path program 6 times [2023-08-26 09:47:55,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:47:55,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548673411] [2023-08-26 09:47:55,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:47:55,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:47:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:47:55,778 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:55,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:47:55,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548673411] [2023-08-26 09:47:55,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548673411] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:47:55,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135068161] [2023-08-26 09:47:55,778 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 09:47:55,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:47:55,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:47:55,781 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) [2023-08-26 09:47:55,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-26 09:47:55,900 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-26 09:47:55,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:47:55,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:47:55,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:47:56,030 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:56,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:47:56,132 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:56,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135068161] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:47:56,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:47:56,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-26 09:47:56,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256189483] [2023-08-26 09:47:56,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:47:56,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-26 09:47:56,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:47:56,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-26 09:47:56,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2023-08-26 09:47:56,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-26 09:47:56,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 69 transitions, 560 flow. Second operand has 20 states, 20 states have (on average 105.65) internal successors, (2113), 20 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:56,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:47:56,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-26 09:47:56,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:47:56,641 INFO L124 PetriNetUnfolderBase]: 183/371 cut-off events. [2023-08-26 09:47:56,641 INFO L125 PetriNetUnfolderBase]: For 959/959 co-relation queries the response was YES. [2023-08-26 09:47:56,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1636 conditions, 371 events. 183/371 cut-off events. For 959/959 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1528 event pairs, 9 based on Foata normal form. 15/384 useless extension candidates. Maximal degree in co-relation 1612. Up to 113 conditions per place. [2023-08-26 09:47:56,644 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 69 selfloop transitions, 62 changer transitions 16/147 dead transitions. [2023-08-26 09:47:56,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 147 transitions, 1253 flow [2023-08-26 09:47:56,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-26 09:47:56,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-26 09:47:56,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2712 transitions. [2023-08-26 09:47:56,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3702389078498293 [2023-08-26 09:47:56,648 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2712 transitions. [2023-08-26 09:47:56,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2712 transitions. [2023-08-26 09:47:56,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:47:56,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2712 transitions. [2023-08-26 09:47:56,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 108.48) internal successors, (2712), 25 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:56,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 293.0) internal successors, (7618), 26 states have internal predecessors, (7618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:56,657 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 293.0) internal successors, (7618), 26 states have internal predecessors, (7618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:56,657 INFO L175 Difference]: Start difference. First operand has 91 places, 69 transitions, 560 flow. Second operand 25 states and 2712 transitions. [2023-08-26 09:47:56,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 147 transitions, 1253 flow [2023-08-26 09:47:56,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 147 transitions, 1108 flow, removed 36 selfloop flow, removed 13 redundant places. [2023-08-26 09:47:56,664 INFO L231 Difference]: Finished difference. Result has 100 places, 89 transitions, 822 flow [2023-08-26 09:47:56,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=822, PETRI_PLACES=100, PETRI_TRANSITIONS=89} [2023-08-26 09:47:56,665 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 64 predicate places. [2023-08-26 09:47:56,665 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 89 transitions, 822 flow [2023-08-26 09:47:56,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 105.65) internal successors, (2113), 20 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:56,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:47:56,665 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:47:56,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-26 09:47:56,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-26 09:47:56,871 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 09:47:56,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:47:56,872 INFO L85 PathProgramCache]: Analyzing trace with hash -989463057, now seen corresponding path program 7 times [2023-08-26 09:47:56,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:47:56,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139497594] [2023-08-26 09:47:56,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:47:56,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:47:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:47:57,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:57,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:47:57,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139497594] [2023-08-26 09:47:57,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139497594] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:47:57,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213218911] [2023-08-26 09:47:57,029 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 09:47:57,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:47:57,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:47:57,030 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) [2023-08-26 09:47:57,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-26 09:47:57,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:47:57,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:47:57,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:47:57,267 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:57,268 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:47:57,395 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:57,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213218911] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:47:57,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:47:57,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-26 09:47:57,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003574561] [2023-08-26 09:47:57,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:47:57,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-26 09:47:57,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:47:57,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-26 09:47:57,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2023-08-26 09:47:57,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-26 09:47:57,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 89 transitions, 822 flow. Second operand has 20 states, 20 states have (on average 105.65) internal successors, (2113), 20 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:57,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:47:57,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-26 09:47:57,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:47:57,841 INFO L124 PetriNetUnfolderBase]: 167/337 cut-off events. [2023-08-26 09:47:57,841 INFO L125 PetriNetUnfolderBase]: For 1432/1432 co-relation queries the response was YES. [2023-08-26 09:47:57,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1707 conditions, 337 events. 167/337 cut-off events. For 1432/1432 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1327 event pairs, 5 based on Foata normal form. 5/342 useless extension candidates. Maximal degree in co-relation 1678. Up to 107 conditions per place. [2023-08-26 09:47:57,843 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 54 selfloop transitions, 54 changer transitions 23/131 dead transitions. [2023-08-26 09:47:57,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 131 transitions, 1246 flow [2023-08-26 09:47:57,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-26 09:47:57,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-26 09:47:57,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2380 transitions. [2023-08-26 09:47:57,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3692212224635433 [2023-08-26 09:47:57,845 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2380 transitions. [2023-08-26 09:47:57,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2380 transitions. [2023-08-26 09:47:57,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:47:57,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2380 transitions. [2023-08-26 09:47:57,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 108.18181818181819) internal successors, (2380), 22 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:57,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 293.0) internal successors, (6739), 23 states have internal predecessors, (6739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:57,852 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 293.0) internal successors, (6739), 23 states have internal predecessors, (6739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:57,852 INFO L175 Difference]: Start difference. First operand has 100 places, 89 transitions, 822 flow. Second operand 22 states and 2380 transitions. [2023-08-26 09:47:57,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 131 transitions, 1246 flow [2023-08-26 09:47:57,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 131 transitions, 1066 flow, removed 51 selfloop flow, removed 13 redundant places. [2023-08-26 09:47:57,860 INFO L231 Difference]: Finished difference. Result has 103 places, 81 transitions, 700 flow [2023-08-26 09:47:57,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=700, PETRI_PLACES=103, PETRI_TRANSITIONS=81} [2023-08-26 09:47:57,861 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 67 predicate places. [2023-08-26 09:47:57,861 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 81 transitions, 700 flow [2023-08-26 09:47:57,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 105.65) internal successors, (2113), 20 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:57,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:47:57,861 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:47:57,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-26 09:47:58,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:47:58,067 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 09:47:58,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:47:58,067 INFO L85 PathProgramCache]: Analyzing trace with hash -339020575, now seen corresponding path program 8 times [2023-08-26 09:47:58,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:47:58,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018382800] [2023-08-26 09:47:58,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:47:58,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:47:58,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:47:58,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:58,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:47:58,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018382800] [2023-08-26 09:47:58,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018382800] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:47:58,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120758254] [2023-08-26 09:47:58,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:47:58,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:47:58,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:47:58,229 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) [2023-08-26 09:47:58,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-26 09:47:58,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:47:58,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:47:58,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:47:58,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:47:58,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:58,476 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:47:58,614 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:47:58,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120758254] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:47:58,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:47:58,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-26 09:47:58,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011248743] [2023-08-26 09:47:58,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:47:58,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-26 09:47:58,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:47:58,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-26 09:47:58,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2023-08-26 09:47:58,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-26 09:47:58,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 81 transitions, 700 flow. Second operand has 20 states, 20 states have (on average 105.6) internal successors, (2112), 20 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:58,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:47:58,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-26 09:47:58,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:47:59,223 INFO L124 PetriNetUnfolderBase]: 200/402 cut-off events. [2023-08-26 09:47:59,223 INFO L125 PetriNetUnfolderBase]: For 1966/1966 co-relation queries the response was YES. [2023-08-26 09:47:59,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1997 conditions, 402 events. 200/402 cut-off events. For 1966/1966 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1695 event pairs, 1 based on Foata normal form. 9/411 useless extension candidates. Maximal degree in co-relation 1970. Up to 111 conditions per place. [2023-08-26 09:47:59,226 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 84 selfloop transitions, 64 changer transitions 19/167 dead transitions. [2023-08-26 09:47:59,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 167 transitions, 1507 flow [2023-08-26 09:47:59,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-26 09:47:59,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-26 09:47:59,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3135 transitions. [2023-08-26 09:47:59,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3689537483817818 [2023-08-26 09:47:59,229 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3135 transitions. [2023-08-26 09:47:59,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3135 transitions. [2023-08-26 09:47:59,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:47:59,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3135 transitions. [2023-08-26 09:47:59,234 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) [2023-08-26 09:47:59,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 293.0) internal successors, (8790), 30 states have internal predecessors, (8790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:59,240 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 293.0) internal successors, (8790), 30 states have internal predecessors, (8790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:59,240 INFO L175 Difference]: Start difference. First operand has 103 places, 81 transitions, 700 flow. Second operand 29 states and 3135 transitions. [2023-08-26 09:47:59,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 167 transitions, 1507 flow [2023-08-26 09:47:59,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 167 transitions, 1343 flow, removed 14 selfloop flow, removed 16 redundant places. [2023-08-26 09:47:59,249 INFO L231 Difference]: Finished difference. Result has 113 places, 99 transitions, 944 flow [2023-08-26 09:47:59,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=944, PETRI_PLACES=113, PETRI_TRANSITIONS=99} [2023-08-26 09:47:59,249 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 77 predicate places. [2023-08-26 09:47:59,250 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 99 transitions, 944 flow [2023-08-26 09:47:59,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 105.6) internal successors, (2112), 20 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:59,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:47:59,250 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:47:59,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-26 09:47:59,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:47:59,456 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 09:47:59,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:47:59,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1977245711, now seen corresponding path program 9 times [2023-08-26 09:47:59,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:47:59,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562415539] [2023-08-26 09:47:59,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:47:59,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:47:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:47:59,598 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:59,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:47:59,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562415539] [2023-08-26 09:47:59,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562415539] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:47:59,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475106506] [2023-08-26 09:47:59,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:47:59,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:47:59,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:47:59,600 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) [2023-08-26 09:47:59,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-26 09:47:59,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 09:47:59,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:47:59,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:47:59,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:47:59,860 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:47:59,860 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:47:59,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:47:59,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475106506] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:47:59,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:47:59,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-26 09:47:59,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921021487] [2023-08-26 09:47:59,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:47:59,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-26 09:47:59,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:47:59,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-26 09:47:59,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2023-08-26 09:47:59,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-26 09:47:59,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 99 transitions, 944 flow. Second operand has 20 states, 20 states have (on average 105.7) internal successors, (2114), 20 states have internal predecessors, (2114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:59,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:47:59,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-26 09:47:59,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:48:00,462 INFO L124 PetriNetUnfolderBase]: 202/399 cut-off events. [2023-08-26 09:48:00,462 INFO L125 PetriNetUnfolderBase]: For 2997/2997 co-relation queries the response was YES. [2023-08-26 09:48:00,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2202 conditions, 399 events. 202/399 cut-off events. For 2997/2997 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1658 event pairs, 5 based on Foata normal form. 8/407 useless extension candidates. Maximal degree in co-relation 2169. Up to 115 conditions per place. [2023-08-26 09:48:00,465 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 39 selfloop transitions, 20 changer transitions 94/153 dead transitions. [2023-08-26 09:48:00,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 153 transitions, 1521 flow [2023-08-26 09:48:00,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-26 09:48:00,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-26 09:48:00,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2384 transitions. [2023-08-26 09:48:00,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3698417623332299 [2023-08-26 09:48:00,468 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2384 transitions. [2023-08-26 09:48:00,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2384 transitions. [2023-08-26 09:48:00,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:48:00,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2384 transitions. [2023-08-26 09:48:00,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 108.36363636363636) internal successors, (2384), 22 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:00,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 293.0) internal successors, (6739), 23 states have internal predecessors, (6739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:00,478 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 293.0) internal successors, (6739), 23 states have internal predecessors, (6739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:00,478 INFO L175 Difference]: Start difference. First operand has 113 places, 99 transitions, 944 flow. Second operand 22 states and 2384 transitions. [2023-08-26 09:48:00,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 153 transitions, 1521 flow [2023-08-26 09:48:00,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 153 transitions, 1336 flow, removed 55 selfloop flow, removed 10 redundant places. [2023-08-26 09:48:00,490 INFO L231 Difference]: Finished difference. Result has 120 places, 44 transitions, 369 flow [2023-08-26 09:48:00,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=369, PETRI_PLACES=120, PETRI_TRANSITIONS=44} [2023-08-26 09:48:00,491 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 84 predicate places. [2023-08-26 09:48:00,491 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 44 transitions, 369 flow [2023-08-26 09:48:00,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 105.7) internal successors, (2114), 20 states have internal predecessors, (2114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:00,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:48:00,492 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:48:00,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-26 09:48:00,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:00,692 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 09:48:00,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:48:00,693 INFO L85 PathProgramCache]: Analyzing trace with hash -366726205, now seen corresponding path program 10 times [2023-08-26 09:48:00,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:48:00,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519441495] [2023-08-26 09:48:00,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:48:00,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:48:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:00,846 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:00,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:48:00,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519441495] [2023-08-26 09:48:00,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519441495] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:48:00,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802039433] [2023-08-26 09:48:00,847 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 09:48:00,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:00,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:48:00,849 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) [2023-08-26 09:48:00,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-26 09:48:00,946 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 09:48:00,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:48:00,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:48:00,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:48:01,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:01,065 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:48:01,214 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:48:01,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802039433] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:48:01,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:48:01,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-26 09:48:01,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356924] [2023-08-26 09:48:01,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:48:01,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-26 09:48:01,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:48:01,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-26 09:48:01,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2023-08-26 09:48:01,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-26 09:48:01,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 44 transitions, 369 flow. Second operand has 20 states, 20 states have (on average 105.6) internal successors, (2112), 20 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:01,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:48:01,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-26 09:48:01,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:48:01,573 INFO L124 PetriNetUnfolderBase]: 69/155 cut-off events. [2023-08-26 09:48:01,573 INFO L125 PetriNetUnfolderBase]: For 1390/1390 co-relation queries the response was YES. [2023-08-26 09:48:01,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 827 conditions, 155 events. 69/155 cut-off events. For 1390/1390 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 484 event pairs, 5 based on Foata normal form. 3/158 useless extension candidates. Maximal degree in co-relation 794. Up to 63 conditions per place. [2023-08-26 09:48:01,574 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 24 selfloop transitions, 8 changer transitions 46/78 dead transitions. [2023-08-26 09:48:01,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 78 transitions, 646 flow [2023-08-26 09:48:01,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-26 09:48:01,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-26 09:48:01,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1942 transitions. [2023-08-26 09:48:01,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36822146378460374 [2023-08-26 09:48:01,578 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1942 transitions. [2023-08-26 09:48:01,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1942 transitions. [2023-08-26 09:48:01,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:48:01,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1942 transitions. [2023-08-26 09:48:01,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 107.88888888888889) internal successors, (1942), 18 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:01,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 293.0) internal successors, (5567), 19 states have internal predecessors, (5567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:01,582 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 293.0) internal successors, (5567), 19 states have internal predecessors, (5567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:01,582 INFO L175 Difference]: Start difference. First operand has 120 places, 44 transitions, 369 flow. Second operand 18 states and 1942 transitions. [2023-08-26 09:48:01,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 78 transitions, 646 flow [2023-08-26 09:48:01,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 78 transitions, 499 flow, removed 32 selfloop flow, removed 29 redundant places. [2023-08-26 09:48:01,584 INFO L231 Difference]: Finished difference. Result has 73 places, 29 transitions, 175 flow [2023-08-26 09:48:01,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=175, PETRI_PLACES=73, PETRI_TRANSITIONS=29} [2023-08-26 09:48:01,585 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 37 predicate places. [2023-08-26 09:48:01,585 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 29 transitions, 175 flow [2023-08-26 09:48:01,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 105.6) internal successors, (2112), 20 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:01,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:48:01,585 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:48:01,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-26 09:48:01,786 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,SelfDestructingSolverStorable26 [2023-08-26 09:48:01,786 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 09:48:01,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:48:01,786 INFO L85 PathProgramCache]: Analyzing trace with hash -460432681, now seen corresponding path program 11 times [2023-08-26 09:48:01,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:48:01,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304011595] [2023-08-26 09:48:01,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:48:01,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:48:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:01,945 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:01,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:48:01,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304011595] [2023-08-26 09:48:01,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304011595] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:48:01,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878732757] [2023-08-26 09:48:01,945 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 09:48:01,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:01,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:48:01,946 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) [2023-08-26 09:48:01,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-26 09:48:02,031 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:48:02,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:48:02,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:48:02,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:48:02,141 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:02,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:48:02,257 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:48:02,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878732757] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:48:02,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:48:02,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-26 09:48:02,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282878383] [2023-08-26 09:48:02,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:48:02,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-26 09:48:02,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:48:02,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-26 09:48:02,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2023-08-26 09:48:02,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-26 09:48:02,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 29 transitions, 175 flow. Second operand has 20 states, 20 states have (on average 105.65) internal successors, (2113), 20 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:02,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:48:02,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-26 09:48:02,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:48:02,834 INFO L124 PetriNetUnfolderBase]: 80/194 cut-off events. [2023-08-26 09:48:02,835 INFO L125 PetriNetUnfolderBase]: For 475/475 co-relation queries the response was YES. [2023-08-26 09:48:02,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 779 conditions, 194 events. 80/194 cut-off events. For 475/475 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 773 event pairs, 0 based on Foata normal form. 13/207 useless extension candidates. Maximal degree in co-relation 759. Up to 71 conditions per place. [2023-08-26 09:48:02,836 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 66 selfloop transitions, 34 changer transitions 19/119 dead transitions. [2023-08-26 09:48:02,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 119 transitions, 788 flow [2023-08-26 09:48:02,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-26 09:48:02,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-26 09:48:02,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2825 transitions. [2023-08-26 09:48:02,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37083223943292204 [2023-08-26 09:48:02,839 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2825 transitions. [2023-08-26 09:48:02,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2825 transitions. [2023-08-26 09:48:02,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:48:02,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2825 transitions. [2023-08-26 09:48:02,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 108.65384615384616) internal successors, (2825), 26 states have internal predecessors, (2825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:02,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 293.0) internal successors, (7911), 27 states have internal predecessors, (7911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:02,847 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 293.0) internal successors, (7911), 27 states have internal predecessors, (7911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:02,847 INFO L175 Difference]: Start difference. First operand has 73 places, 29 transitions, 175 flow. Second operand 26 states and 2825 transitions. [2023-08-26 09:48:02,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 119 transitions, 788 flow [2023-08-26 09:48:02,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 119 transitions, 657 flow, removed 44 selfloop flow, removed 16 redundant places. [2023-08-26 09:48:02,851 INFO L231 Difference]: Finished difference. Result has 61 places, 48 transitions, 322 flow [2023-08-26 09:48:02,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=322, PETRI_PLACES=61, PETRI_TRANSITIONS=48} [2023-08-26 09:48:02,856 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 25 predicate places. [2023-08-26 09:48:02,856 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 48 transitions, 322 flow [2023-08-26 09:48:02,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 105.65) internal successors, (2113), 20 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:02,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:48:02,857 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:48:02,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-26 09:48:03,062 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,SelfDestructingSolverStorable27 [2023-08-26 09:48:03,062 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 09:48:03,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:48:03,062 INFO L85 PathProgramCache]: Analyzing trace with hash -176222463, now seen corresponding path program 12 times [2023-08-26 09:48:03,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:48:03,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722521973] [2023-08-26 09:48:03,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:48:03,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:48:03,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:03,209 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:03,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:48:03,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722521973] [2023-08-26 09:48:03,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722521973] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:48:03,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044608062] [2023-08-26 09:48:03,210 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 09:48:03,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:03,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:48:03,213 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) [2023-08-26 09:48:03,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-26 09:48:03,339 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-26 09:48:03,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:48:03,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:48:03,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:48:03,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:03,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:48:03,597 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:48:03,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044608062] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:48:03,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:48:03,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-26 09:48:03,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454547843] [2023-08-26 09:48:03,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:48:03,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-26 09:48:03,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:48:03,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-26 09:48:03,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2023-08-26 09:48:03,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-26 09:48:03,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 322 flow. Second operand has 20 states, 20 states have (on average 105.6) internal successors, (2112), 20 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:03,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:48:03,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-26 09:48:03,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:48:04,034 INFO L124 PetriNetUnfolderBase]: 72/172 cut-off events. [2023-08-26 09:48:04,035 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2023-08-26 09:48:04,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 660 conditions, 172 events. 72/172 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 615 event pairs, 0 based on Foata normal form. 3/175 useless extension candidates. Maximal degree in co-relation 646. Up to 61 conditions per place. [2023-08-26 09:48:04,036 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 40 selfloop transitions, 33 changer transitions 15/88 dead transitions. [2023-08-26 09:48:04,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 88 transitions, 609 flow [2023-08-26 09:48:04,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-26 09:48:04,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-26 09:48:04,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2371 transitions. [2023-08-26 09:48:04,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36782500775674837 [2023-08-26 09:48:04,040 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2371 transitions. [2023-08-26 09:48:04,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2371 transitions. [2023-08-26 09:48:04,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:48:04,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2371 transitions. [2023-08-26 09:48:04,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 107.77272727272727) internal successors, (2371), 22 states have internal predecessors, (2371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:04,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 293.0) internal successors, (6739), 23 states have internal predecessors, (6739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:04,047 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 293.0) internal successors, (6739), 23 states have internal predecessors, (6739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:04,047 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 322 flow. Second operand 22 states and 2371 transitions. [2023-08-26 09:48:04,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 88 transitions, 609 flow [2023-08-26 09:48:04,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 88 transitions, 441 flow, removed 66 selfloop flow, removed 13 redundant places. [2023-08-26 09:48:04,050 INFO L231 Difference]: Finished difference. Result has 69 places, 48 transitions, 244 flow [2023-08-26 09:48:04,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=244, PETRI_PLACES=69, PETRI_TRANSITIONS=48} [2023-08-26 09:48:04,050 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2023-08-26 09:48:04,050 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 48 transitions, 244 flow [2023-08-26 09:48:04,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 105.6) internal successors, (2112), 20 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:04,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:48:04,051 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:48:04,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-08-26 09:48:04,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-26 09:48:04,253 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 09:48:04,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:48:04,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1814447599, now seen corresponding path program 13 times [2023-08-26 09:48:04,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:48:04,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94459818] [2023-08-26 09:48:04,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:48:04,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:48:04,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:04,396 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:04,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:48:04,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94459818] [2023-08-26 09:48:04,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94459818] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:48:04,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122293878] [2023-08-26 09:48:04,396 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 09:48:04,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:04,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:48:04,397 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) [2023-08-26 09:48:04,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-26 09:48:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:04,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:48:04,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:48:04,593 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:04,593 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:48:04,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:48:04,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122293878] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:48:04,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:48:04,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-26 09:48:04,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143368920] [2023-08-26 09:48:04,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:48:04,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-26 09:48:04,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:48:04,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-26 09:48:04,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2023-08-26 09:48:04,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-26 09:48:04,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 48 transitions, 244 flow. Second operand has 20 states, 20 states have (on average 105.7) internal successors, (2114), 20 states have internal predecessors, (2114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:04,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:48:04,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-26 09:48:04,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:48:04,996 INFO L124 PetriNetUnfolderBase]: 77/177 cut-off events. [2023-08-26 09:48:04,997 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2023-08-26 09:48:04,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 562 conditions, 177 events. 77/177 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 658 event pairs, 1 based on Foata normal form. 9/176 useless extension candidates. Maximal degree in co-relation 548. Up to 30 conditions per place. [2023-08-26 09:48:04,997 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 27 selfloop transitions, 15 changer transitions 46/88 dead transitions. [2023-08-26 09:48:04,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 88 transitions, 517 flow [2023-08-26 09:48:04,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-26 09:48:04,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-26 09:48:04,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2055 transitions. [2023-08-26 09:48:04,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3691395724806898 [2023-08-26 09:48:04,999 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2055 transitions. [2023-08-26 09:48:04,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2055 transitions. [2023-08-26 09:48:04,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:48:04,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2055 transitions. [2023-08-26 09:48:05,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 108.15789473684211) internal successors, (2055), 19 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:05,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 293.0) internal successors, (5860), 20 states have internal predecessors, (5860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:05,004 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 293.0) internal successors, (5860), 20 states have internal predecessors, (5860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:05,005 INFO L175 Difference]: Start difference. First operand has 69 places, 48 transitions, 244 flow. Second operand 19 states and 2055 transitions. [2023-08-26 09:48:05,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 88 transitions, 517 flow [2023-08-26 09:48:05,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 88 transitions, 429 flow, removed 8 selfloop flow, removed 19 redundant places. [2023-08-26 09:48:05,007 INFO L231 Difference]: Finished difference. Result has 62 places, 34 transitions, 137 flow [2023-08-26 09:48:05,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=137, PETRI_PLACES=62, PETRI_TRANSITIONS=34} [2023-08-26 09:48:05,007 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2023-08-26 09:48:05,007 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 34 transitions, 137 flow [2023-08-26 09:48:05,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 105.7) internal successors, (2114), 20 states have internal predecessors, (2114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:05,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:48:05,008 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:48:05,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-26 09:48:05,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:05,213 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-26 09:48:05,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:48:05,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1690375879, now seen corresponding path program 14 times [2023-08-26 09:48:05,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:48:05,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561686249] [2023-08-26 09:48:05,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:48:05,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:48:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:05,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:05,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:48:05,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561686249] [2023-08-26 09:48:05,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561686249] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:48:05,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843525135] [2023-08-26 09:48:05,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:48:05,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:05,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:48:05,360 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) [2023-08-26 09:48:05,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-26 09:48:05,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:48:05,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:48:05,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:48:05,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:48:05,631 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:05,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:48:05,751 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:05,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843525135] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:48:05,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:48:05,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2023-08-26 09:48:05,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107268284] [2023-08-26 09:48:05,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:48:05,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-26 09:48:05,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:48:05,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-26 09:48:05,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2023-08-26 09:48:05,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-26 09:48:05,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 34 transitions, 137 flow. Second operand has 19 states, 19 states have (on average 105.73684210526316) internal successors, (2009), 19 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:05,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:48:05,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-26 09:48:05,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:48:05,956 INFO L124 PetriNetUnfolderBase]: 37/82 cut-off events. [2023-08-26 09:48:05,956 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 09:48:05,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 82 events. 37/82 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 169 event pairs, 0 based on Foata normal form. 2/74 useless extension candidates. Maximal degree in co-relation 238. Up to 19 conditions per place. [2023-08-26 09:48:05,957 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 0 selfloop transitions, 0 changer transitions 50/50 dead transitions. [2023-08-26 09:48:05,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 50 transitions, 273 flow [2023-08-26 09:48:05,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-26 09:48:05,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-26 09:48:05,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1603 transitions. [2023-08-26 09:48:05,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3647326507394767 [2023-08-26 09:48:05,959 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1603 transitions. [2023-08-26 09:48:05,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1603 transitions. [2023-08-26 09:48:05,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:48:05,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1603 transitions. [2023-08-26 09:48:05,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 106.86666666666666) internal successors, (1603), 15 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:05,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 293.0) internal successors, (4688), 16 states have internal predecessors, (4688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:05,962 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 293.0) internal successors, (4688), 16 states have internal predecessors, (4688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:05,963 INFO L175 Difference]: Start difference. First operand has 62 places, 34 transitions, 137 flow. Second operand 15 states and 1603 transitions. [2023-08-26 09:48:05,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 50 transitions, 273 flow [2023-08-26 09:48:05,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 50 transitions, 243 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-08-26 09:48:05,963 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2023-08-26 09:48:05,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2023-08-26 09:48:05,964 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 12 predicate places. [2023-08-26 09:48:05,964 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2023-08-26 09:48:05,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 105.73684210526316) internal successors, (2009), 19 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:05,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (25 of 26 remaining) [2023-08-26 09:48:05,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (24 of 26 remaining) [2023-08-26 09:48:05,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (23 of 26 remaining) [2023-08-26 09:48:05,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (22 of 26 remaining) [2023-08-26 09:48:05,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (21 of 26 remaining) [2023-08-26 09:48:05,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (20 of 26 remaining) [2023-08-26 09:48:05,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONDATA_RACE (19 of 26 remaining) [2023-08-26 09:48:05,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 26 remaining) [2023-08-26 09:48:05,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (17 of 26 remaining) [2023-08-26 09:48:05,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (16 of 26 remaining) [2023-08-26 09:48:05,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 26 remaining) [2023-08-26 09:48:05,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 26 remaining) [2023-08-26 09:48:05,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (13 of 26 remaining) [2023-08-26 09:48:05,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (12 of 26 remaining) [2023-08-26 09:48:05,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (11 of 26 remaining) [2023-08-26 09:48:05,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (10 of 26 remaining) [2023-08-26 09:48:05,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONASSERT (9 of 26 remaining) [2023-08-26 09:48:05,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 26 remaining) [2023-08-26 09:48:05,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 26 remaining) [2023-08-26 09:48:05,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (6 of 26 remaining) [2023-08-26 09:48:05,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (5 of 26 remaining) [2023-08-26 09:48:05,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (4 of 26 remaining) [2023-08-26 09:48:05,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (3 of 26 remaining) [2023-08-26 09:48:05,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (2 of 26 remaining) [2023-08-26 09:48:05,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (1 of 26 remaining) [2023-08-26 09:48:05,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONDATA_RACE (0 of 26 remaining) [2023-08-26 09:48:05,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-26 09:48:06,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:06,174 INFO L445 BasicCegarLoop]: Path program histogram: [14, 10, 6, 1] [2023-08-26 09:48:06,178 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 09:48:06,178 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 09:48:06,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 09:48:06 BasicIcfg [2023-08-26 09:48:06,180 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 09:48:06,182 INFO L158 Benchmark]: Toolchain (without parser) took 37004.32ms. Allocated memory was 364.9MB in the beginning and 685.8MB in the end (delta: 320.9MB). Free memory was 342.0MB in the beginning and 334.9MB in the end (delta: 7.1MB). Peak memory consumption was 331.0MB. Max. memory is 16.0GB. [2023-08-26 09:48:06,182 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 364.9MB. Free memory was 343.3MB in the beginning and 343.1MB in the end (delta: 194.0kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 09:48:06,183 INFO L158 Benchmark]: CACSL2BoogieTranslator took 237.85ms. Allocated memory is still 364.9MB. Free memory was 341.6MB in the beginning and 330.5MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-26 09:48:06,183 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.83ms. Allocated memory is still 364.9MB. Free memory was 330.5MB in the beginning and 328.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 09:48:06,183 INFO L158 Benchmark]: Boogie Preprocessor took 47.09ms. Allocated memory is still 364.9MB. Free memory was 328.8MB in the beginning and 327.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 09:48:06,184 INFO L158 Benchmark]: RCFGBuilder took 524.91ms. Allocated memory is still 364.9MB. Free memory was 327.1MB in the beginning and 306.5MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-26 09:48:06,184 INFO L158 Benchmark]: TraceAbstraction took 36136.41ms. Allocated memory was 364.9MB in the beginning and 685.8MB in the end (delta: 320.9MB). Free memory was 305.7MB in the beginning and 334.9MB in the end (delta: -29.2MB). Peak memory consumption was 293.2MB. Max. memory is 16.0GB. [2023-08-26 09:48:06,185 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 364.9MB. Free memory was 343.3MB in the beginning and 343.1MB in the end (delta: 194.0kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 237.85ms. Allocated memory is still 364.9MB. Free memory was 341.6MB in the beginning and 330.5MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 52.83ms. Allocated memory is still 364.9MB. Free memory was 330.5MB in the beginning and 328.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 47.09ms. Allocated memory is still 364.9MB. Free memory was 328.8MB in the beginning and 327.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 524.91ms. Allocated memory is still 364.9MB. Free memory was 327.1MB in the beginning and 306.5MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 36136.41ms. Allocated memory was 364.9MB in the beginning and 685.8MB in the end (delta: 320.9MB). Free memory was 305.7MB in the beginning and 334.9MB in the end (delta: -29.2MB). Peak memory consumption was 293.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.6s, 129 PlacesBefore, 36 PlacesAfterwards, 129 TransitionsBefore, 31 TransitionsAfterwards, 1636 CoEnabledTransitionPairs, 7 FixpointIterations, 82 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 10 TrivialYvCompositions, 6 ConcurrentYvCompositions, 5 ChoiceCompositions, 153 TotalNumberOfCompositions, 1797 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1761, independent: 1757, independent conditional: 0, independent unconditional: 1757, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 927, independent: 923, independent conditional: 0, independent unconditional: 923, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1761, independent: 834, independent conditional: 0, independent unconditional: 834, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 927, unknown conditional: 0, unknown unconditional: 927] , 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: 51]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 53]: 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: 54]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 64]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 65]: 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: 67]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 72]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 73]: 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: 75]: 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: 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, 167 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: 36.0s, OverallIterations: 31, TraceHistogramMax: 2, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 12.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1588 SdHoareTripleChecker+Valid, 6.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1588 mSDsluCounter, 410 SdHoareTripleChecker+Invalid, 5.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 305 mSDsCounter, 464 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11023 IncrementalHoareTripleChecker+Invalid, 11487 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 464 mSolverCounterUnsat, 105 mSDtfsCounter, 11023 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1111 GetRequests, 412 SyntacticMatches, 41 SemanticMatches, 658 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4798 ImplicationChecksByTransitivity, 8.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=944occurred in iteration=25, InterpolantAutomatonStates: 520, 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: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 11.2s InterpolantComputationTime, 807 NumberOfCodeBlocks, 807 NumberOfCodeBlocksAsserted, 76 NumberOfCheckSat, 1092 ConstructedInterpolants, 0 QuantifiedInterpolants, 12116 SizeOfPredicates, 38 NumberOfNonLiveVariables, 3986 ConjunctsInSsa, 520 ConjunctsInUnsatCore, 79 InterpolantComputations, 7 PerfectInterpolantSequences, 10/198 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! [2023-08-26 09:48:06,204 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...