/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 20:18:13,294 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 20:18:13,369 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-25 20:18:13,373 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 20:18:13,374 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 20:18:13,413 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 20:18:13,413 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 20:18:13,414 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 20:18:13,414 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 20:18:13,418 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 20:18:13,418 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 20:18:13,418 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 20:18:13,419 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 20:18:13,420 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 20:18:13,420 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 20:18:13,420 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 20:18:13,420 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 20:18:13,421 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 20:18:13,421 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 20:18:13,421 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 20:18:13,421 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 20:18:13,422 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 20:18:13,422 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 20:18:13,423 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 20:18:13,423 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 20:18:13,423 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 20:18:13,423 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 20:18:13,423 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 20:18:13,424 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 20:18:13,424 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 20:18:13,425 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 20:18:13,425 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 20:18:13,425 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 20:18:13,425 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 20:18:13,426 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 20:18:13,426 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 20:18:13,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 20:18:13,786 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 20:18:13,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 20:18:13,789 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 20:18:13,789 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 20:18:13,790 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c [2023-08-25 20:18:14,932 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 20:18:15,167 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 20:18:15,168 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c [2023-08-25 20:18:15,174 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d468fcd66/a62d11f5d66d4ef98a8aa9b7a97b0718/FLAG7df062776 [2023-08-25 20:18:15,186 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d468fcd66/a62d11f5d66d4ef98a8aa9b7a97b0718 [2023-08-25 20:18:15,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 20:18:15,189 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 20:18:15,190 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 20:18:15,190 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 20:18:15,193 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 20:18:15,193 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 08:18:15" (1/1) ... [2023-08-25 20:18:15,194 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43734c1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:18:15, skipping insertion in model container [2023-08-25 20:18:15,194 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 08:18:15" (1/1) ... [2023-08-25 20:18:15,212 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 20:18:15,362 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 20:18:15,372 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 20:18:15,404 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 20:18:15,412 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 20:18:15,412 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 20:18:15,421 INFO L206 MainTranslator]: Completed translation [2023-08-25 20:18:15,421 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:18:15 WrapperNode [2023-08-25 20:18:15,421 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 20:18:15,422 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 20:18:15,423 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 20:18:15,423 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 20:18:15,428 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:18:15" (1/1) ... [2023-08-25 20:18:15,442 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:18:15" (1/1) ... [2023-08-25 20:18:15,472 INFO L138 Inliner]: procedures = 21, calls = 26, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 123 [2023-08-25 20:18:15,473 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 20:18:15,474 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 20:18:15,474 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 20:18:15,474 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 20:18:15,481 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:18:15" (1/1) ... [2023-08-25 20:18:15,481 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:18:15" (1/1) ... [2023-08-25 20:18:15,495 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:18:15" (1/1) ... [2023-08-25 20:18:15,495 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:18:15" (1/1) ... [2023-08-25 20:18:15,501 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:18:15" (1/1) ... [2023-08-25 20:18:15,503 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:18:15" (1/1) ... [2023-08-25 20:18:15,515 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:18:15" (1/1) ... [2023-08-25 20:18:15,516 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:18:15" (1/1) ... [2023-08-25 20:18:15,518 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 20:18:15,519 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 20:18:15,519 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 20:18:15,519 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 20:18:15,520 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:18:15" (1/1) ... [2023-08-25 20:18:15,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 20:18:15,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:18:15,554 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-25 20:18:15,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-25 20:18:15,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 20:18:15,599 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-25 20:18:15,599 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-25 20:18:15,599 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-25 20:18:15,599 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-25 20:18:15,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 20:18:15,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 20:18:15,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 20:18:15,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-25 20:18:15,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-25 20:18:15,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 20:18:15,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 20:18:15,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 20:18:15,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 20:18:15,601 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 20:18:15,723 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 20:18:15,725 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 20:18:16,016 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 20:18:16,092 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 20:18:16,092 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-25 20:18:16,094 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 08:18:16 BoogieIcfgContainer [2023-08-25 20:18:16,094 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 20:18:16,097 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 20:18:16,097 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 20:18:16,100 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 20:18:16,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 08:18:15" (1/3) ... [2023-08-25 20:18:16,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14883ec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 08:18:16, skipping insertion in model container [2023-08-25 20:18:16,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:18:15" (2/3) ... [2023-08-25 20:18:16,102 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14883ec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 08:18:16, skipping insertion in model container [2023-08-25 20:18:16,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 08:18:16" (3/3) ... [2023-08-25 20:18:16,103 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1-alt.wvr.c [2023-08-25 20:18:16,119 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 20:18:16,119 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2023-08-25 20:18:16,120 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 20:18:16,177 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 20:18:16,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 140 transitions, 296 flow [2023-08-25 20:18:16,286 INFO L124 PetriNetUnfolderBase]: 7/138 cut-off events. [2023-08-25 20:18:16,286 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 20:18:16,294 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. [2023-08-25 20:18:16,294 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 140 transitions, 296 flow [2023-08-25 20:18:16,299 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 129 transitions, 270 flow [2023-08-25 20:18:16,306 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 20:18:16,318 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 129 transitions, 270 flow [2023-08-25 20:18:16,322 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 129 transitions, 270 flow [2023-08-25 20:18:16,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 129 transitions, 270 flow [2023-08-25 20:18:16,352 INFO L124 PetriNetUnfolderBase]: 7/129 cut-off events. [2023-08-25 20:18:16,352 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 20:18:16,353 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. [2023-08-25 20:18:16,355 INFO L119 LiptonReduction]: Number of co-enabled transitions 1636 [2023-08-25 20:18:19,857 INFO L134 LiptonReduction]: Checked pairs total: 1797 [2023-08-25 20:18:19,857 INFO L136 LiptonReduction]: Total number of compositions: 153 [2023-08-25 20:18:19,870 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 20:18:19,875 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;@2c4e327d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 20:18:19,876 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-08-25 20:18:19,877 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 20:18:19,877 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 20:18:19,877 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 20:18:19,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:18:19,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 20:18:19,878 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)] === [2023-08-25 20:18:19,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:18:19,882 INFO L85 PathProgramCache]: Analyzing trace with hash 587, now seen corresponding path program 1 times [2023-08-25 20:18:19,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:18:19,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837564689] [2023-08-25 20:18:19,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:18:19,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:18:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:18:19,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:19,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:18:19,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837564689] [2023-08-25 20:18:19,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837564689] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:18:19,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:18:19,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 20:18:19,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045212642] [2023-08-25 20:18:19,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:18:19,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 20:18:19,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:18:19,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 20:18:19,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 20:18:19,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 293 [2023-08-25 20:18:19,999 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) [2023-08-25 20:18:19,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:18:19,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 293 [2023-08-25 20:18:20,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:18:20,052 INFO L124 PetriNetUnfolderBase]: 44/77 cut-off events. [2023-08-25 20:18:20,052 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-25 20:18:20,053 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. [2023-08-25 20:18:20,056 INFO L140 encePairwiseOnDemand]: 277/293 looper letters, 13 selfloop transitions, 0 changer transitions 0/15 dead transitions. [2023-08-25 20:18:20,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 15 transitions, 68 flow [2023-08-25 20:18:20,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 20:18:20,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 20:18:20,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 277 transitions. [2023-08-25 20:18:20,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4726962457337884 [2023-08-25 20:18:20,076 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 277 transitions. [2023-08-25 20:18:20,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 277 transitions. [2023-08-25 20:18:20,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:18:20,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 277 transitions. [2023-08-25 20:18:20,085 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) [2023-08-25 20:18:20,089 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) [2023-08-25 20:18:20,089 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) [2023-08-25 20:18:20,091 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 74 flow. Second operand 2 states and 277 transitions. [2023-08-25 20:18:20,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 15 transitions, 68 flow [2023-08-25 20:18:20,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 15 transitions, 60 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 20:18:20,095 INFO L231 Difference]: Finished difference. Result has 17 places, 15 transitions, 34 flow [2023-08-25 20:18:20,096 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} [2023-08-25 20:18:20,100 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -19 predicate places. [2023-08-25 20:18:20,100 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 15 transitions, 34 flow [2023-08-25 20:18:20,100 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) [2023-08-25 20:18:20,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:18:20,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:18:20,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 20:18:20,101 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 20:18:20,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:18:20,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1136544362, now seen corresponding path program 1 times [2023-08-25 20:18:20,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:18:20,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155921906] [2023-08-25 20:18:20,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:18:20,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:18:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:18:20,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:20,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:18:20,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155921906] [2023-08-25 20:18:20,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155921906] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:18:20,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:18:20,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 20:18:20,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202799968] [2023-08-25 20:18:20,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:18:20,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 20:18:20,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:18:20,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 20:18:20,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-25 20:18:20,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 20:18:20,667 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) [2023-08-25 20:18:20,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:18:20,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 20:18:20,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:18:20,758 INFO L124 PetriNetUnfolderBase]: 62/128 cut-off events. [2023-08-25 20:18:20,758 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 20:18:20,759 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. [2023-08-25 20:18:20,759 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 29 selfloop transitions, 4 changer transitions 11/44 dead transitions. [2023-08-25 20:18:20,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 44 transitions, 188 flow [2023-08-25 20:18:20,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 20:18:20,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 20:18:20,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 777 transitions. [2023-08-25 20:18:20,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378839590443686 [2023-08-25 20:18:20,762 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 777 transitions. [2023-08-25 20:18:20,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 777 transitions. [2023-08-25 20:18:20,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:18:20,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 777 transitions. [2023-08-25 20:18:20,765 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) [2023-08-25 20:18:20,769 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) [2023-08-25 20:18:20,770 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) [2023-08-25 20:18:20,770 INFO L175 Difference]: Start difference. First operand has 17 places, 15 transitions, 34 flow. Second operand 7 states and 777 transitions. [2023-08-25 20:18:20,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 44 transitions, 188 flow [2023-08-25 20:18:20,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 44 transitions, 188 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 20:18:20,772 INFO L231 Difference]: Finished difference. Result has 28 places, 17 transitions, 70 flow [2023-08-25 20:18:20,772 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} [2023-08-25 20:18:20,773 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -8 predicate places. [2023-08-25 20:18:20,773 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 70 flow [2023-08-25 20:18:20,773 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) [2023-08-25 20:18:20,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:18:20,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:18:20,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 20:18:20,774 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 20:18:20,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:18:20,775 INFO L85 PathProgramCache]: Analyzing trace with hash 805751844, now seen corresponding path program 2 times [2023-08-25 20:18:20,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:18:20,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555484807] [2023-08-25 20:18:20,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:18:20,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:18:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:18:21,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:21,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:18:21,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555484807] [2023-08-25 20:18:21,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555484807] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:18:21,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:18:21,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 20:18:21,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098125518] [2023-08-25 20:18:21,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:18:21,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 20:18:21,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:18:21,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 20:18:21,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-25 20:18:21,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 20:18:21,049 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) [2023-08-25 20:18:21,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:18:21,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 20:18:21,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:18:21,138 INFO L124 PetriNetUnfolderBase]: 58/122 cut-off events. [2023-08-25 20:18:21,138 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2023-08-25 20:18:21,138 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. [2023-08-25 20:18:21,139 INFO L140 encePairwiseOnDemand]: 286/293 looper letters, 29 selfloop transitions, 8 changer transitions 8/45 dead transitions. [2023-08-25 20:18:21,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 45 transitions, 258 flow [2023-08-25 20:18:21,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 20:18:21,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 20:18:21,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 774 transitions. [2023-08-25 20:18:21,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3773768893222818 [2023-08-25 20:18:21,142 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 774 transitions. [2023-08-25 20:18:21,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 774 transitions. [2023-08-25 20:18:21,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:18:21,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 774 transitions. [2023-08-25 20:18:21,145 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) [2023-08-25 20:18:21,148 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) [2023-08-25 20:18:21,149 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) [2023-08-25 20:18:21,149 INFO L175 Difference]: Start difference. First operand has 28 places, 17 transitions, 70 flow. Second operand 7 states and 774 transitions. [2023-08-25 20:18:21,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 45 transitions, 258 flow [2023-08-25 20:18:21,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 45 transitions, 231 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-08-25 20:18:21,151 INFO L231 Difference]: Finished difference. Result has 33 places, 23 transitions, 112 flow [2023-08-25 20:18:21,151 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} [2023-08-25 20:18:21,152 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -3 predicate places. [2023-08-25 20:18:21,152 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 112 flow [2023-08-25 20:18:21,153 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) [2023-08-25 20:18:21,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:18:21,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:18:21,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 20:18:21,153 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 20:18:21,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:18:21,154 INFO L85 PathProgramCache]: Analyzing trace with hash 688208906, now seen corresponding path program 3 times [2023-08-25 20:18:21,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:18:21,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27979166] [2023-08-25 20:18:21,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:18:21,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:18:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:18:21,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:21,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:18:21,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27979166] [2023-08-25 20:18:21,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27979166] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:18:21,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:18:21,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 20:18:21,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138669149] [2023-08-25 20:18:21,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:18:21,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 20:18:21,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:18:21,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 20:18:21,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-25 20:18:21,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 20:18:21,392 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) [2023-08-25 20:18:21,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:18:21,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 20:18:21,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:18:21,496 INFO L124 PetriNetUnfolderBase]: 64/134 cut-off events. [2023-08-25 20:18:21,496 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2023-08-25 20:18:21,497 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. [2023-08-25 20:18:21,498 INFO L140 encePairwiseOnDemand]: 286/293 looper letters, 28 selfloop transitions, 10 changer transitions 9/47 dead transitions. [2023-08-25 20:18:21,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 290 flow [2023-08-25 20:18:21,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 20:18:21,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 20:18:21,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 772 transitions. [2023-08-25 20:18:21,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37640175524134567 [2023-08-25 20:18:21,501 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 772 transitions. [2023-08-25 20:18:21,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 772 transitions. [2023-08-25 20:18:21,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:18:21,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 772 transitions. [2023-08-25 20:18:21,504 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) [2023-08-25 20:18:21,507 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) [2023-08-25 20:18:21,508 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) [2023-08-25 20:18:21,508 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 112 flow. Second operand 7 states and 772 transitions. [2023-08-25 20:18:21,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 290 flow [2023-08-25 20:18:21,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 47 transitions, 280 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-25 20:18:21,511 INFO L231 Difference]: Finished difference. Result has 40 places, 26 transitions, 164 flow [2023-08-25 20:18:21,511 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} [2023-08-25 20:18:21,512 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 4 predicate places. [2023-08-25 20:18:21,512 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 26 transitions, 164 flow [2023-08-25 20:18:21,512 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) [2023-08-25 20:18:21,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:18:21,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:18:21,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 20:18:21,513 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 20:18:21,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:18:21,514 INFO L85 PathProgramCache]: Analyzing trace with hash -61799644, now seen corresponding path program 4 times [2023-08-25 20:18:21,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:18:21,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792714716] [2023-08-25 20:18:21,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:18:21,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:18:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:18:21,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:21,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:18:21,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792714716] [2023-08-25 20:18:21,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792714716] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:18:21,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:18:21,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 20:18:21,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240591977] [2023-08-25 20:18:21,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:18:21,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 20:18:21,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:18:21,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 20:18:21,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-25 20:18:21,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 20:18:21,733 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) [2023-08-25 20:18:21,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:18:21,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 20:18:21,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:18:21,840 INFO L124 PetriNetUnfolderBase]: 59/125 cut-off events. [2023-08-25 20:18:21,840 INFO L125 PetriNetUnfolderBase]: For 253/253 co-relation queries the response was YES. [2023-08-25 20:18:21,841 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. [2023-08-25 20:18:21,842 INFO L140 encePairwiseOnDemand]: 286/293 looper letters, 25 selfloop transitions, 12 changer transitions 9/46 dead transitions. [2023-08-25 20:18:21,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 46 transitions, 336 flow [2023-08-25 20:18:21,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 20:18:21,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 20:18:21,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 770 transitions. [2023-08-25 20:18:21,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37542662116040953 [2023-08-25 20:18:21,844 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 770 transitions. [2023-08-25 20:18:21,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 770 transitions. [2023-08-25 20:18:21,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:18:21,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 770 transitions. [2023-08-25 20:18:21,847 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) [2023-08-25 20:18:21,849 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) [2023-08-25 20:18:21,850 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) [2023-08-25 20:18:21,850 INFO L175 Difference]: Start difference. First operand has 40 places, 26 transitions, 164 flow. Second operand 7 states and 770 transitions. [2023-08-25 20:18:21,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 46 transitions, 336 flow [2023-08-25 20:18:21,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 46 transitions, 316 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-25 20:18:21,853 INFO L231 Difference]: Finished difference. Result has 43 places, 28 transitions, 207 flow [2023-08-25 20:18:21,853 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} [2023-08-25 20:18:21,854 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2023-08-25 20:18:21,854 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 28 transitions, 207 flow [2023-08-25 20:18:21,854 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) [2023-08-25 20:18:21,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:18:21,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:18:21,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 20:18:21,855 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 20:18:21,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:18:21,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1198145606, now seen corresponding path program 5 times [2023-08-25 20:18:21,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:18:21,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440188383] [2023-08-25 20:18:21,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:18:21,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:18:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:18:22,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:22,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:18:22,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440188383] [2023-08-25 20:18:22,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440188383] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:18:22,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:18:22,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 20:18:22,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491602498] [2023-08-25 20:18:22,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:18:22,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 20:18:22,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:18:22,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 20:18:22,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-25 20:18:22,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 20:18:22,077 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) [2023-08-25 20:18:22,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:18:22,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 20:18:22,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:18:22,192 INFO L124 PetriNetUnfolderBase]: 57/121 cut-off events. [2023-08-25 20:18:22,192 INFO L125 PetriNetUnfolderBase]: For 252/252 co-relation queries the response was YES. [2023-08-25 20:18:22,193 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. [2023-08-25 20:18:22,194 INFO L140 encePairwiseOnDemand]: 286/293 looper letters, 28 selfloop transitions, 13 changer transitions 5/46 dead transitions. [2023-08-25 20:18:22,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 46 transitions, 359 flow [2023-08-25 20:18:22,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 20:18:22,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 20:18:22,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 770 transitions. [2023-08-25 20:18:22,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37542662116040953 [2023-08-25 20:18:22,197 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 770 transitions. [2023-08-25 20:18:22,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 770 transitions. [2023-08-25 20:18:22,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:18:22,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 770 transitions. [2023-08-25 20:18:22,199 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) [2023-08-25 20:18:22,201 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) [2023-08-25 20:18:22,202 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) [2023-08-25 20:18:22,202 INFO L175 Difference]: Start difference. First operand has 43 places, 28 transitions, 207 flow. Second operand 7 states and 770 transitions. [2023-08-25 20:18:22,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 46 transitions, 359 flow [2023-08-25 20:18:22,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 46 transitions, 325 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-25 20:18:22,205 INFO L231 Difference]: Finished difference. Result has 44 places, 29 transitions, 211 flow [2023-08-25 20:18:22,205 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} [2023-08-25 20:18:22,206 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 8 predicate places. [2023-08-25 20:18:22,206 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 29 transitions, 211 flow [2023-08-25 20:18:22,207 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) [2023-08-25 20:18:22,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:18:22,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:18:22,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 20:18:22,207 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 20:18:22,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:18:22,208 INFO L85 PathProgramCache]: Analyzing trace with hash -34094014, now seen corresponding path program 6 times [2023-08-25 20:18:22,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:18:22,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393233488] [2023-08-25 20:18:22,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:18:22,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:18:22,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:18:22,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:22,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:18:22,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393233488] [2023-08-25 20:18:22,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393233488] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:18:22,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:18:22,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 20:18:22,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574699734] [2023-08-25 20:18:22,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:18:22,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 20:18:22,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:18:22,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 20:18:22,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-25 20:18:22,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 20:18:22,440 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) [2023-08-25 20:18:22,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:18:22,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 20:18:22,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:18:22,539 INFO L124 PetriNetUnfolderBase]: 56/114 cut-off events. [2023-08-25 20:18:22,540 INFO L125 PetriNetUnfolderBase]: For 325/325 co-relation queries the response was YES. [2023-08-25 20:18:22,540 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. [2023-08-25 20:18:22,541 INFO L140 encePairwiseOnDemand]: 286/293 looper letters, 21 selfloop transitions, 13 changer transitions 8/42 dead transitions. [2023-08-25 20:18:22,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 42 transitions, 337 flow [2023-08-25 20:18:22,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 20:18:22,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 20:18:22,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 766 transitions. [2023-08-25 20:18:22,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3734763529985373 [2023-08-25 20:18:22,544 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 766 transitions. [2023-08-25 20:18:22,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 766 transitions. [2023-08-25 20:18:22,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:18:22,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 766 transitions. [2023-08-25 20:18:22,546 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) [2023-08-25 20:18:22,548 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) [2023-08-25 20:18:22,549 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) [2023-08-25 20:18:22,549 INFO L175 Difference]: Start difference. First operand has 44 places, 29 transitions, 211 flow. Second operand 7 states and 766 transitions. [2023-08-25 20:18:22,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 42 transitions, 337 flow [2023-08-25 20:18:22,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 42 transitions, 292 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-25 20:18:22,551 INFO L231 Difference]: Finished difference. Result has 44 places, 28 transitions, 188 flow [2023-08-25 20:18:22,551 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} [2023-08-25 20:18:22,552 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 8 predicate places. [2023-08-25 20:18:22,552 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 28 transitions, 188 flow [2023-08-25 20:18:22,553 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) [2023-08-25 20:18:22,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:18:22,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:18:22,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 20:18:22,553 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 20:18:22,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:18:22,554 INFO L85 PathProgramCache]: Analyzing trace with hash 436351151, now seen corresponding path program 1 times [2023-08-25 20:18:22,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:18:22,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355034890] [2023-08-25 20:18:22,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:18:22,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:18:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:18:22,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:22,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:18:22,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355034890] [2023-08-25 20:18:22,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355034890] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:18:22,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20025224] [2023-08-25 20:18:22,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:18:22,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:18:22,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:18:22,717 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:18:22,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-25 20:18:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:18:22,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 20:18:22,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:18:22,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:22,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:18:23,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:23,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20025224] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:18:23,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:18:23,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-25 20:18:23,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970024025] [2023-08-25 20:18:23,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:18:23,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-25 20:18:23,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:18:23,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-25 20:18:23,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2023-08-25 20:18:23,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 20:18:23,179 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) [2023-08-25 20:18:23,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:18:23,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 20:18:23,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:18:23,702 INFO L124 PetriNetUnfolderBase]: 120/246 cut-off events. [2023-08-25 20:18:23,703 INFO L125 PetriNetUnfolderBase]: For 235/235 co-relation queries the response was YES. [2023-08-25 20:18:23,704 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. [2023-08-25 20:18:23,705 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 53 selfloop transitions, 22 changer transitions 25/100 dead transitions. [2023-08-25 20:18:23,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 100 transitions, 622 flow [2023-08-25 20:18:23,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-25 20:18:23,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-25 20:18:23,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1760 transitions. [2023-08-25 20:18:23,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37542662116040953 [2023-08-25 20:18:23,711 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1760 transitions. [2023-08-25 20:18:23,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1760 transitions. [2023-08-25 20:18:23,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:18:23,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1760 transitions. [2023-08-25 20:18:23,716 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) [2023-08-25 20:18:23,722 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) [2023-08-25 20:18:23,723 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) [2023-08-25 20:18:23,723 INFO L175 Difference]: Start difference. First operand has 44 places, 28 transitions, 188 flow. Second operand 16 states and 1760 transitions. [2023-08-25 20:18:23,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 100 transitions, 622 flow [2023-08-25 20:18:23,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 100 transitions, 575 flow, removed 9 selfloop flow, removed 8 redundant places. [2023-08-25 20:18:23,727 INFO L231 Difference]: Finished difference. Result has 60 places, 40 transitions, 309 flow [2023-08-25 20:18:23,727 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} [2023-08-25 20:18:23,728 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 24 predicate places. [2023-08-25 20:18:23,728 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 40 transitions, 309 flow [2023-08-25 20:18:23,729 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) [2023-08-25 20:18:23,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:18:23,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:18:23,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-25 20:18:23,934 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 [2023-08-25 20:18:23,935 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 20:18:23,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:18:23,935 INFO L85 PathProgramCache]: Analyzing trace with hash 360851905, now seen corresponding path program 2 times [2023-08-25 20:18:23,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:18:23,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952851887] [2023-08-25 20:18:23,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:18:23,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:18:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:18:24,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:24,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:18:24,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952851887] [2023-08-25 20:18:24,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952851887] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:18:24,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953441276] [2023-08-25 20:18:24,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 20:18:24,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:18:24,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:18:24,136 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:18:24,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-25 20:18:24,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 20:18:24,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:18:24,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 20:18:24,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:18:24,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:24,391 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:18:24,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:24,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953441276] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:18:24,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:18:24,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-25 20:18:24,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771002233] [2023-08-25 20:18:24,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:18:24,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-25 20:18:24,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:18:24,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-25 20:18:24,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2023-08-25 20:18:24,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 20:18:24,542 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) [2023-08-25 20:18:24,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:18:24,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 20:18:24,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:18:25,358 INFO L124 PetriNetUnfolderBase]: 169/373 cut-off events. [2023-08-25 20:18:25,358 INFO L125 PetriNetUnfolderBase]: For 1019/1019 co-relation queries the response was YES. [2023-08-25 20:18:25,359 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. [2023-08-25 20:18:25,361 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 90 selfloop transitions, 47 changer transitions 18/155 dead transitions. [2023-08-25 20:18:25,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 155 transitions, 1182 flow [2023-08-25 20:18:25,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-25 20:18:25,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-25 20:18:25,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2847 transitions. [2023-08-25 20:18:25,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37372013651877134 [2023-08-25 20:18:25,369 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2847 transitions. [2023-08-25 20:18:25,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2847 transitions. [2023-08-25 20:18:25,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:18:25,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2847 transitions. [2023-08-25 20:18:25,376 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) [2023-08-25 20:18:25,385 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) [2023-08-25 20:18:25,387 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) [2023-08-25 20:18:25,387 INFO L175 Difference]: Start difference. First operand has 60 places, 40 transitions, 309 flow. Second operand 26 states and 2847 transitions. [2023-08-25 20:18:25,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 155 transitions, 1182 flow [2023-08-25 20:18:25,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 155 transitions, 1027 flow, removed 71 selfloop flow, removed 7 redundant places. [2023-08-25 20:18:25,393 INFO L231 Difference]: Finished difference. Result has 84 places, 67 transitions, 598 flow [2023-08-25 20:18:25,393 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} [2023-08-25 20:18:25,394 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 48 predicate places. [2023-08-25 20:18:25,394 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 67 transitions, 598 flow [2023-08-25 20:18:25,395 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) [2023-08-25 20:18:25,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:18:25,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:18:25,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-25 20:18:25,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-08-25 20:18:25,601 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 20:18:25,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:18:25,601 INFO L85 PathProgramCache]: Analyzing trace with hash 222006625, now seen corresponding path program 3 times [2023-08-25 20:18:25,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:18:25,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449757763] [2023-08-25 20:18:25,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:18:25,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:18:25,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:18:25,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:25,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:18:25,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449757763] [2023-08-25 20:18:25,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449757763] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:18:25,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134616454] [2023-08-25 20:18:25,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 20:18:25,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:18:25,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:18:25,779 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:18:25,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-25 20:18:25,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 20:18:25,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:18:25,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 20:18:25,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:18:26,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:26,042 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:18:26,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:26,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134616454] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:18:26,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:18:26,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-25 20:18:26,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030459726] [2023-08-25 20:18:26,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:18:26,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-25 20:18:26,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:18:26,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-25 20:18:26,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2023-08-25 20:18:26,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 20:18:26,224 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) [2023-08-25 20:18:26,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:18:26,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 20:18:26,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:18:26,895 INFO L124 PetriNetUnfolderBase]: 164/349 cut-off events. [2023-08-25 20:18:26,895 INFO L125 PetriNetUnfolderBase]: For 1888/1888 co-relation queries the response was YES. [2023-08-25 20:18:26,897 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. [2023-08-25 20:18:26,899 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 65 selfloop transitions, 37 changer transitions 34/136 dead transitions. [2023-08-25 20:18:26,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 136 transitions, 1152 flow [2023-08-25 20:18:26,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-25 20:18:26,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-25 20:18:26,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2306 transitions. [2023-08-25 20:18:26,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3747765317731188 [2023-08-25 20:18:26,907 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2306 transitions. [2023-08-25 20:18:26,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2306 transitions. [2023-08-25 20:18:26,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:18:26,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2306 transitions. [2023-08-25 20:18:26,914 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) [2023-08-25 20:18:26,922 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) [2023-08-25 20:18:26,924 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) [2023-08-25 20:18:26,924 INFO L175 Difference]: Start difference. First operand has 84 places, 67 transitions, 598 flow. Second operand 21 states and 2306 transitions. [2023-08-25 20:18:26,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 136 transitions, 1152 flow [2023-08-25 20:18:26,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 136 transitions, 991 flow, removed 62 selfloop flow, removed 7 redundant places. [2023-08-25 20:18:26,936 INFO L231 Difference]: Finished difference. Result has 99 places, 61 transitions, 487 flow [2023-08-25 20:18:26,937 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} [2023-08-25 20:18:26,938 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 63 predicate places. [2023-08-25 20:18:26,938 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 61 transitions, 487 flow [2023-08-25 20:18:26,950 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) [2023-08-25 20:18:26,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:18:26,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:18:26,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-25 20:18:27,155 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 [2023-08-25 20:18:27,156 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 20:18:27,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:18:27,156 INFO L85 PathProgramCache]: Analyzing trace with hash -799713853, now seen corresponding path program 4 times [2023-08-25 20:18:27,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:18:27,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038230547] [2023-08-25 20:18:27,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:18:27,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:18:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:18:27,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:27,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:18:27,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038230547] [2023-08-25 20:18:27,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038230547] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:18:27,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509303403] [2023-08-25 20:18:27,364 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 20:18:27,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:18:27,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:18:27,365 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:18:27,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-25 20:18:27,450 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 20:18:27,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:18:27,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 20:18:27,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:18:27,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:27,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:18:27,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:27,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509303403] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:18:27,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:18:27,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-25 20:18:27,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961289945] [2023-08-25 20:18:27,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:18:27,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-25 20:18:27,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:18:27,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-25 20:18:27,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-08-25 20:18:27,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 20:18:27,714 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) [2023-08-25 20:18:27,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:18:27,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 20:18:27,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:18:27,920 INFO L124 PetriNetUnfolderBase]: 171/345 cut-off events. [2023-08-25 20:18:27,920 INFO L125 PetriNetUnfolderBase]: For 2103/2103 co-relation queries the response was YES. [2023-08-25 20:18:27,921 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. [2023-08-25 20:18:27,923 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 49 selfloop transitions, 26 changer transitions 26/101 dead transitions. [2023-08-25 20:18:27,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 101 transitions, 892 flow [2023-08-25 20:18:27,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-25 20:18:27,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-25 20:18:27,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1415 transitions. [2023-08-25 20:18:27,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37148857967970594 [2023-08-25 20:18:27,925 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1415 transitions. [2023-08-25 20:18:27,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1415 transitions. [2023-08-25 20:18:27,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:18:27,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1415 transitions. [2023-08-25 20:18:27,928 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) [2023-08-25 20:18:27,932 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) [2023-08-25 20:18:27,933 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) [2023-08-25 20:18:27,933 INFO L175 Difference]: Start difference. First operand has 99 places, 61 transitions, 487 flow. Second operand 13 states and 1415 transitions. [2023-08-25 20:18:27,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 101 transitions, 892 flow [2023-08-25 20:18:27,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 101 transitions, 754 flow, removed 16 selfloop flow, removed 22 redundant places. [2023-08-25 20:18:27,938 INFO L231 Difference]: Finished difference. Result has 81 places, 59 transitions, 476 flow [2023-08-25 20:18:27,938 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} [2023-08-25 20:18:27,939 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 45 predicate places. [2023-08-25 20:18:27,939 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 59 transitions, 476 flow [2023-08-25 20:18:27,939 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) [2023-08-25 20:18:27,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:18:27,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:18:27,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-25 20:18:28,144 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 [2023-08-25 20:18:28,145 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 20:18:28,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:18:28,145 INFO L85 PathProgramCache]: Analyzing trace with hash 58566031, now seen corresponding path program 5 times [2023-08-25 20:18:28,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:18:28,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401674091] [2023-08-25 20:18:28,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:18:28,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:18:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:18:28,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:28,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:18:28,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401674091] [2023-08-25 20:18:28,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401674091] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:18:28,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379782459] [2023-08-25 20:18:28,303 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 20:18:28,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:18:28,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:18:28,305 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:18:28,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-25 20:18:28,376 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 20:18:28,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:18:28,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 20:18:28,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:18:28,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:28,524 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:18:28,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:28,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379782459] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:18:28,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:18:28,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-25 20:18:28,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437437546] [2023-08-25 20:18:28,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:18:28,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-25 20:18:28,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:18:28,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-25 20:18:28,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-08-25 20:18:28,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 20:18:28,684 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) [2023-08-25 20:18:28,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:18:28,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 20:18:28,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:18:29,240 INFO L124 PetriNetUnfolderBase]: 178/378 cut-off events. [2023-08-25 20:18:29,240 INFO L125 PetriNetUnfolderBase]: For 1576/1576 co-relation queries the response was YES. [2023-08-25 20:18:29,241 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. [2023-08-25 20:18:29,243 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 72 selfloop transitions, 37 changer transitions 19/128 dead transitions. [2023-08-25 20:18:29,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 128 transitions, 1045 flow [2023-08-25 20:18:29,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-25 20:18:29,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-25 20:18:29,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2286 transitions. [2023-08-25 20:18:29,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37152608483666505 [2023-08-25 20:18:29,256 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2286 transitions. [2023-08-25 20:18:29,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2286 transitions. [2023-08-25 20:18:29,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:18:29,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2286 transitions. [2023-08-25 20:18:29,263 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) [2023-08-25 20:18:29,269 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) [2023-08-25 20:18:29,270 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) [2023-08-25 20:18:29,270 INFO L175 Difference]: Start difference. First operand has 81 places, 59 transitions, 476 flow. Second operand 21 states and 2286 transitions. [2023-08-25 20:18:29,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 128 transitions, 1045 flow [2023-08-25 20:18:29,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 128 transitions, 967 flow, removed 24 selfloop flow, removed 7 redundant places. [2023-08-25 20:18:29,276 INFO L231 Difference]: Finished difference. Result has 93 places, 70 transitions, 634 flow [2023-08-25 20:18:29,277 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} [2023-08-25 20:18:29,277 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 57 predicate places. [2023-08-25 20:18:29,277 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 70 transitions, 634 flow [2023-08-25 20:18:29,278 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) [2023-08-25 20:18:29,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:18:29,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:18:29,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-25 20:18:29,483 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 [2023-08-25 20:18:29,483 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 20:18:29,483 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:18:29,484 INFO L85 PathProgramCache]: Analyzing trace with hash -80279249, now seen corresponding path program 6 times [2023-08-25 20:18:29,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:18:29,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931597661] [2023-08-25 20:18:29,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:18:29,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:18:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:18:29,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:29,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:18:29,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931597661] [2023-08-25 20:18:29,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931597661] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:18:29,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029772216] [2023-08-25 20:18:29,635 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 20:18:29,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:18:29,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:18:29,636 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:18:29,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-25 20:18:29,713 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-25 20:18:29,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:18:29,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 20:18:29,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:18:29,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:29,827 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:18:29,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:29,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029772216] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:18:29,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:18:29,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-25 20:18:29,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060435718] [2023-08-25 20:18:29,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:18:29,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-25 20:18:29,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:18:29,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-25 20:18:29,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2023-08-25 20:18:29,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 20:18:29,984 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) [2023-08-25 20:18:29,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:18:29,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 20:18:29,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:18:30,525 INFO L124 PetriNetUnfolderBase]: 175/362 cut-off events. [2023-08-25 20:18:30,526 INFO L125 PetriNetUnfolderBase]: For 1379/1379 co-relation queries the response was YES. [2023-08-25 20:18:30,527 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. [2023-08-25 20:18:30,529 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 53 selfloop transitions, 31 changer transitions 32/116 dead transitions. [2023-08-25 20:18:30,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 116 transitions, 1006 flow [2023-08-25 20:18:30,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-25 20:18:30,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-25 20:18:30,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1962 transitions. [2023-08-25 20:18:30,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3720136518771331 [2023-08-25 20:18:30,533 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1962 transitions. [2023-08-25 20:18:30,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1962 transitions. [2023-08-25 20:18:30,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:18:30,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1962 transitions. [2023-08-25 20:18:30,537 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) [2023-08-25 20:18:30,542 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) [2023-08-25 20:18:30,543 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) [2023-08-25 20:18:30,543 INFO L175 Difference]: Start difference. First operand has 93 places, 70 transitions, 634 flow. Second operand 18 states and 1962 transitions. [2023-08-25 20:18:30,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 116 transitions, 1006 flow [2023-08-25 20:18:30,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 116 transitions, 877 flow, removed 32 selfloop flow, removed 13 redundant places. [2023-08-25 20:18:30,550 INFO L231 Difference]: Finished difference. Result has 96 places, 65 transitions, 558 flow [2023-08-25 20:18:30,551 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} [2023-08-25 20:18:30,551 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 60 predicate places. [2023-08-25 20:18:30,551 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 65 transitions, 558 flow [2023-08-25 20:18:30,552 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) [2023-08-25 20:18:30,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:18:30,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:18:30,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-25 20:18:30,757 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 [2023-08-25 20:18:30,757 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 20:18:30,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:18:30,758 INFO L85 PathProgramCache]: Analyzing trace with hash -480762315, now seen corresponding path program 7 times [2023-08-25 20:18:30,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:18:30,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847001514] [2023-08-25 20:18:30,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:18:30,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:18:30,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:18:30,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:30,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:18:30,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847001514] [2023-08-25 20:18:30,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847001514] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:18:30,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249933954] [2023-08-25 20:18:30,937 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 20:18:30,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:18:30,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:18:30,938 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:18:30,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-25 20:18:31,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:18:31,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 20:18:31,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:18:31,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:31,100 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:18:31,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:31,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249933954] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:18:31,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:18:31,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-25 20:18:31,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632989830] [2023-08-25 20:18:31,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:18:31,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-25 20:18:31,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:18:31,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-25 20:18:31,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-08-25 20:18:31,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 20:18:31,213 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) [2023-08-25 20:18:31,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:18:31,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 20:18:31,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:18:31,395 INFO L124 PetriNetUnfolderBase]: 162/331 cut-off events. [2023-08-25 20:18:31,395 INFO L125 PetriNetUnfolderBase]: For 970/970 co-relation queries the response was YES. [2023-08-25 20:18:31,397 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. [2023-08-25 20:18:31,398 INFO L140 encePairwiseOnDemand]: 286/293 looper letters, 59 selfloop transitions, 8 changer transitions 18/85 dead transitions. [2023-08-25 20:18:31,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 85 transitions, 798 flow [2023-08-25 20:18:31,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 20:18:31,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 20:18:31,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1085 transitions. [2023-08-25 20:18:31,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3703071672354949 [2023-08-25 20:18:31,401 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1085 transitions. [2023-08-25 20:18:31,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1085 transitions. [2023-08-25 20:18:31,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:18:31,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1085 transitions. [2023-08-25 20:18:31,403 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) [2023-08-25 20:18:31,406 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) [2023-08-25 20:18:31,406 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) [2023-08-25 20:18:31,406 INFO L175 Difference]: Start difference. First operand has 96 places, 65 transitions, 558 flow. Second operand 10 states and 1085 transitions. [2023-08-25 20:18:31,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 85 transitions, 798 flow [2023-08-25 20:18:31,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 85 transitions, 706 flow, removed 12 selfloop flow, removed 18 redundant places. [2023-08-25 20:18:31,412 INFO L231 Difference]: Finished difference. Result has 81 places, 62 transitions, 471 flow [2023-08-25 20:18:31,412 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} [2023-08-25 20:18:31,413 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 45 predicate places. [2023-08-25 20:18:31,413 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 62 transitions, 471 flow [2023-08-25 20:18:31,413 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) [2023-08-25 20:18:31,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:18:31,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:18:31,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-25 20:18:31,619 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 [2023-08-25 20:18:31,619 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 20:18:31,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:18:31,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1769375773, now seen corresponding path program 8 times [2023-08-25 20:18:31,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:18:31,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336579201] [2023-08-25 20:18:31,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:18:31,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:18:31,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:18:31,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:31,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:18:31,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336579201] [2023-08-25 20:18:31,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336579201] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:18:31,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120802255] [2023-08-25 20:18:31,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 20:18:31,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:18:31,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:18:31,769 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:18:31,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-25 20:18:31,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 20:18:31,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:18:31,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 20:18:31,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:18:31,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:31,954 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:18:32,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:32,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120802255] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:18:32,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:18:32,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-25 20:18:32,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267785600] [2023-08-25 20:18:32,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:18:32,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-25 20:18:32,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:18:32,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-25 20:18:32,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2023-08-25 20:18:32,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 20:18:32,071 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) [2023-08-25 20:18:32,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:18:32,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 20:18:32,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:18:32,263 INFO L124 PetriNetUnfolderBase]: 158/323 cut-off events. [2023-08-25 20:18:32,263 INFO L125 PetriNetUnfolderBase]: For 776/776 co-relation queries the response was YES. [2023-08-25 20:18:32,264 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. [2023-08-25 20:18:32,265 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 58 selfloop transitions, 14 changer transitions 20/92 dead transitions. [2023-08-25 20:18:32,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 92 transitions, 801 flow [2023-08-25 20:18:32,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-25 20:18:32,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-25 20:18:32,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1300 transitions. [2023-08-25 20:18:32,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36973833902161546 [2023-08-25 20:18:32,268 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1300 transitions. [2023-08-25 20:18:32,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1300 transitions. [2023-08-25 20:18:32,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:18:32,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1300 transitions. [2023-08-25 20:18:32,271 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) [2023-08-25 20:18:32,274 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) [2023-08-25 20:18:32,274 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) [2023-08-25 20:18:32,274 INFO L175 Difference]: Start difference. First operand has 81 places, 62 transitions, 471 flow. Second operand 12 states and 1300 transitions. [2023-08-25 20:18:32,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 92 transitions, 801 flow [2023-08-25 20:18:32,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 92 transitions, 749 flow, removed 15 selfloop flow, removed 11 redundant places. [2023-08-25 20:18:32,279 INFO L231 Difference]: Finished difference. Result has 79 places, 63 transitions, 499 flow [2023-08-25 20:18:32,280 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} [2023-08-25 20:18:32,280 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 43 predicate places. [2023-08-25 20:18:32,280 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 63 transitions, 499 flow [2023-08-25 20:18:32,281 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) [2023-08-25 20:18:32,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:18:32,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:18:32,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-25 20:18:32,486 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 [2023-08-25 20:18:32,487 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 20:18:32,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:18:32,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1049624039, now seen corresponding path program 9 times [2023-08-25 20:18:32,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:18:32,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482609402] [2023-08-25 20:18:32,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:18:32,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:18:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:18:32,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:32,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:18:32,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482609402] [2023-08-25 20:18:32,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482609402] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:18:32,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427194529] [2023-08-25 20:18:32,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 20:18:32,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:18:32,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:18:32,647 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:18:32,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-25 20:18:32,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 20:18:32,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:18:32,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 20:18:32,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:18:32,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:32,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:18:33,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:33,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427194529] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:18:33,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:18:33,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-25 20:18:33,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959830714] [2023-08-25 20:18:33,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:18:33,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-25 20:18:33,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:18:33,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-25 20:18:33,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-08-25 20:18:33,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 20:18:33,016 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) [2023-08-25 20:18:33,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:18:33,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 20:18:33,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:18:33,556 INFO L124 PetriNetUnfolderBase]: 141/298 cut-off events. [2023-08-25 20:18:33,556 INFO L125 PetriNetUnfolderBase]: For 702/702 co-relation queries the response was YES. [2023-08-25 20:18:33,557 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. [2023-08-25 20:18:33,558 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 63 selfloop transitions, 20 changer transitions 20/103 dead transitions. [2023-08-25 20:18:33,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 103 transitions, 856 flow [2023-08-25 20:18:33,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-25 20:18:33,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-25 20:18:33,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1736 transitions. [2023-08-25 20:18:33,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3703071672354949 [2023-08-25 20:18:33,562 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1736 transitions. [2023-08-25 20:18:33,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1736 transitions. [2023-08-25 20:18:33,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:18:33,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1736 transitions. [2023-08-25 20:18:33,565 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) [2023-08-25 20:18:33,570 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) [2023-08-25 20:18:33,570 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) [2023-08-25 20:18:33,570 INFO L175 Difference]: Start difference. First operand has 79 places, 63 transitions, 499 flow. Second operand 16 states and 1736 transitions. [2023-08-25 20:18:33,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 103 transitions, 856 flow [2023-08-25 20:18:33,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 103 transitions, 830 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-08-25 20:18:33,576 INFO L231 Difference]: Finished difference. Result has 88 places, 65 transitions, 569 flow [2023-08-25 20:18:33,576 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} [2023-08-25 20:18:33,576 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 52 predicate places. [2023-08-25 20:18:33,577 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 65 transitions, 569 flow [2023-08-25 20:18:33,577 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) [2023-08-25 20:18:33,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:18:33,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:18:33,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-25 20:18:33,782 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 [2023-08-25 20:18:33,783 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 20:18:33,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:18:33,783 INFO L85 PathProgramCache]: Analyzing trace with hash -911095889, now seen corresponding path program 10 times [2023-08-25 20:18:33,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:18:33,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439902304] [2023-08-25 20:18:33,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:18:33,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:18:33,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:18:33,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:33,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:18:33,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439902304] [2023-08-25 20:18:33,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439902304] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:18:33,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15864442] [2023-08-25 20:18:33,988 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 20:18:33,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:18:33,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:18:33,990 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:18:33,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-25 20:18:34,077 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 20:18:34,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:18:34,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 20:18:34,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:18:34,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:34,193 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:18:34,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:34,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15864442] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:18:34,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:18:34,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-25 20:18:34,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100251449] [2023-08-25 20:18:34,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:18:34,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-25 20:18:34,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:18:34,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-25 20:18:34,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2023-08-25 20:18:34,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 20:18:34,345 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) [2023-08-25 20:18:34,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:18:34,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 20:18:34,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:18:34,718 INFO L124 PetriNetUnfolderBase]: 125/251 cut-off events. [2023-08-25 20:18:34,718 INFO L125 PetriNetUnfolderBase]: For 924/924 co-relation queries the response was YES. [2023-08-25 20:18:34,719 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. [2023-08-25 20:18:34,720 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 57 selfloop transitions, 15 changer transitions 22/94 dead transitions. [2023-08-25 20:18:34,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 94 transitions, 848 flow [2023-08-25 20:18:34,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-25 20:18:34,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-25 20:18:34,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1626 transitions. [2023-08-25 20:18:34,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3699658703071672 [2023-08-25 20:18:34,731 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1626 transitions. [2023-08-25 20:18:34,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1626 transitions. [2023-08-25 20:18:34,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:18:34,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1626 transitions. [2023-08-25 20:18:34,734 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) [2023-08-25 20:18:34,737 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) [2023-08-25 20:18:34,737 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) [2023-08-25 20:18:34,737 INFO L175 Difference]: Start difference. First operand has 88 places, 65 transitions, 569 flow. Second operand 15 states and 1626 transitions. [2023-08-25 20:18:34,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 94 transitions, 848 flow [2023-08-25 20:18:34,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 94 transitions, 762 flow, removed 24 selfloop flow, removed 8 redundant places. [2023-08-25 20:18:34,742 INFO L231 Difference]: Finished difference. Result has 87 places, 59 transitions, 478 flow [2023-08-25 20:18:34,742 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} [2023-08-25 20:18:34,743 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 51 predicate places. [2023-08-25 20:18:34,743 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 59 transitions, 478 flow [2023-08-25 20:18:34,743 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) [2023-08-25 20:18:34,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:18:34,743 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:18:34,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-25 20:18:34,948 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 [2023-08-25 20:18:34,949 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 20:18:34,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:18:34,949 INFO L85 PathProgramCache]: Analyzing trace with hash 683363501, now seen corresponding path program 1 times [2023-08-25 20:18:34,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:18:34,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002549596] [2023-08-25 20:18:34,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:18:34,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:18:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:18:35,126 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:35,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:18:35,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002549596] [2023-08-25 20:18:35,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002549596] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:18:35,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66110265] [2023-08-25 20:18:35,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:18:35,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:18:35,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:18:35,128 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:18:35,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-25 20:18:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:18:35,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 20:18:35,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:18:35,336 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:35,336 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:18:35,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:18:35,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66110265] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:18:35,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:18:35,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2023-08-25 20:18:35,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633380275] [2023-08-25 20:18:35,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:18:35,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-25 20:18:35,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:18:35,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-25 20:18:35,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2023-08-25 20:18:35,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 20:18:35,469 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) [2023-08-25 20:18:35,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:18:35,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 20:18:35,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:18:35,887 INFO L124 PetriNetUnfolderBase]: 172/334 cut-off events. [2023-08-25 20:18:35,887 INFO L125 PetriNetUnfolderBase]: For 1055/1055 co-relation queries the response was YES. [2023-08-25 20:18:35,888 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. [2023-08-25 20:18:35,890 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 45 selfloop transitions, 43 changer transitions 42/130 dead transitions. [2023-08-25 20:18:35,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 130 transitions, 1055 flow [2023-08-25 20:18:35,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-25 20:18:35,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-25 20:18:35,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1863 transitions. [2023-08-25 20:18:35,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37402128086729575 [2023-08-25 20:18:35,893 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1863 transitions. [2023-08-25 20:18:35,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1863 transitions. [2023-08-25 20:18:35,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:18:35,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1863 transitions. [2023-08-25 20:18:35,896 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) [2023-08-25 20:18:35,899 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) [2023-08-25 20:18:35,899 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) [2023-08-25 20:18:35,899 INFO L175 Difference]: Start difference. First operand has 87 places, 59 transitions, 478 flow. Second operand 17 states and 1863 transitions. [2023-08-25 20:18:35,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 130 transitions, 1055 flow [2023-08-25 20:18:35,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 130 transitions, 957 flow, removed 20 selfloop flow, removed 13 redundant places. [2023-08-25 20:18:35,905 INFO L231 Difference]: Finished difference. Result has 89 places, 67 transitions, 597 flow [2023-08-25 20:18:35,906 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} [2023-08-25 20:18:35,906 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 53 predicate places. [2023-08-25 20:18:35,906 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 67 transitions, 597 flow [2023-08-25 20:18:35,907 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) [2023-08-25 20:18:35,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:18:35,907 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:18:35,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-25 20:18:36,111 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 [2023-08-25 20:18:36,112 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 20:18:36,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:18:36,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1119144287, now seen corresponding path program 2 times [2023-08-25 20:18:36,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:18:36,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386854546] [2023-08-25 20:18:36,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:18:36,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:18:36,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:18:36,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:36,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:18:36,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386854546] [2023-08-25 20:18:36,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386854546] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:18:36,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511435207] [2023-08-25 20:18:36,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 20:18:36,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:18:36,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:18:36,323 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:18:36,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-25 20:18:36,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 20:18:36,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:18:36,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 20:18:36,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:18:36,570 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:36,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:18:36,698 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:18:36,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511435207] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:18:36,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:18:36,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-25 20:18:36,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236813388] [2023-08-25 20:18:36,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:18:36,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 20:18:36,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:18:36,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 20:18:36,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2023-08-25 20:18:36,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 20:18:36,702 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) [2023-08-25 20:18:36,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:18:36,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 20:18:36,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:18:37,452 INFO L124 PetriNetUnfolderBase]: 195/377 cut-off events. [2023-08-25 20:18:37,452 INFO L125 PetriNetUnfolderBase]: For 2094/2094 co-relation queries the response was YES. [2023-08-25 20:18:37,454 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. [2023-08-25 20:18:37,456 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 72 selfloop transitions, 71 changer transitions 16/159 dead transitions. [2023-08-25 20:18:37,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 159 transitions, 1454 flow [2023-08-25 20:18:37,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-25 20:18:37,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-25 20:18:37,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3045 transitions. [2023-08-25 20:18:37,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371160409556314 [2023-08-25 20:18:37,460 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3045 transitions. [2023-08-25 20:18:37,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3045 transitions. [2023-08-25 20:18:37,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:18:37,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3045 transitions. [2023-08-25 20:18:37,465 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) [2023-08-25 20:18:37,470 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) [2023-08-25 20:18:37,471 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) [2023-08-25 20:18:37,471 INFO L175 Difference]: Start difference. First operand has 89 places, 67 transitions, 597 flow. Second operand 28 states and 3045 transitions. [2023-08-25 20:18:37,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 159 transitions, 1454 flow [2023-08-25 20:18:37,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 159 transitions, 1284 flow, removed 38 selfloop flow, removed 13 redundant places. [2023-08-25 20:18:37,479 INFO L231 Difference]: Finished difference. Result has 98 places, 93 transitions, 923 flow [2023-08-25 20:18:37,479 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} [2023-08-25 20:18:37,479 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 62 predicate places. [2023-08-25 20:18:37,479 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 93 transitions, 923 flow [2023-08-25 20:18:37,480 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) [2023-08-25 20:18:37,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:18:37,480 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:18:37,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-25 20:18:37,687 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 [2023-08-25 20:18:37,687 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 20:18:37,688 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:18:37,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1537597873, now seen corresponding path program 3 times [2023-08-25 20:18:37,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:18:37,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815793712] [2023-08-25 20:18:37,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:18:37,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:18:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:18:37,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:37,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:18:37,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815793712] [2023-08-25 20:18:37,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815793712] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:18:37,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62109254] [2023-08-25 20:18:37,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 20:18:37,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:18:37,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:18:37,871 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:18:37,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-25 20:18:37,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 20:18:37,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:18:37,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 20:18:37,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:18:38,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:38,081 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:18:38,183 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:18:38,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62109254] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:18:38,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:18:38,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-25 20:18:38,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794730401] [2023-08-25 20:18:38,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:18:38,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 20:18:38,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:18:38,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 20:18:38,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2023-08-25 20:18:38,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 20:18:38,187 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) [2023-08-25 20:18:38,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:18:38,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 20:18:38,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:18:38,644 INFO L124 PetriNetUnfolderBase]: 198/382 cut-off events. [2023-08-25 20:18:38,644 INFO L125 PetriNetUnfolderBase]: For 1543/1543 co-relation queries the response was YES. [2023-08-25 20:18:38,645 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. [2023-08-25 20:18:38,646 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 56 selfloop transitions, 56 changer transitions 41/153 dead transitions. [2023-08-25 20:18:38,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 153 transitions, 1460 flow [2023-08-25 20:18:38,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-25 20:18:38,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-25 20:18:38,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2397 transitions. [2023-08-25 20:18:38,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37185851690971145 [2023-08-25 20:18:38,650 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2397 transitions. [2023-08-25 20:18:38,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2397 transitions. [2023-08-25 20:18:38,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:18:38,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2397 transitions. [2023-08-25 20:18:38,653 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) [2023-08-25 20:18:38,657 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) [2023-08-25 20:18:38,658 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) [2023-08-25 20:18:38,658 INFO L175 Difference]: Start difference. First operand has 98 places, 93 transitions, 923 flow. Second operand 22 states and 2397 transitions. [2023-08-25 20:18:38,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 153 transitions, 1460 flow [2023-08-25 20:18:38,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 153 transitions, 1112 flow, removed 122 selfloop flow, removed 14 redundant places. [2023-08-25 20:18:38,667 INFO L231 Difference]: Finished difference. Result has 104 places, 85 transitions, 669 flow [2023-08-25 20:18:38,667 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} [2023-08-25 20:18:38,668 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 68 predicate places. [2023-08-25 20:18:38,668 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 85 transitions, 669 flow [2023-08-25 20:18:38,668 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) [2023-08-25 20:18:38,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:18:38,668 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:18:38,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-25 20:18:38,873 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 [2023-08-25 20:18:38,873 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 20:18:38,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:18:38,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1257989567, now seen corresponding path program 4 times [2023-08-25 20:18:38,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:18:38,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183495267] [2023-08-25 20:18:38,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:18:38,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:18:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:18:39,044 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:39,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:18:39,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183495267] [2023-08-25 20:18:39,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183495267] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:18:39,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822336404] [2023-08-25 20:18:39,045 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 20:18:39,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:18:39,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:18:39,046 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:18:39,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-25 20:18:39,157 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 20:18:39,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:18:39,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 20:18:39,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:18:39,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:39,305 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:18:39,412 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:18:39,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822336404] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:18:39,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:18:39,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-25 20:18:39,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066391973] [2023-08-25 20:18:39,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:18:39,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 20:18:39,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:18:39,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 20:18:39,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2023-08-25 20:18:39,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 20:18:39,416 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) [2023-08-25 20:18:39,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:18:39,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 20:18:39,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:18:40,003 INFO L124 PetriNetUnfolderBase]: 162/310 cut-off events. [2023-08-25 20:18:40,003 INFO L125 PetriNetUnfolderBase]: For 607/607 co-relation queries the response was YES. [2023-08-25 20:18:40,004 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. [2023-08-25 20:18:40,006 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 52 selfloop transitions, 56 changer transitions 28/136 dead transitions. [2023-08-25 20:18:40,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 136 transitions, 1079 flow [2023-08-25 20:18:40,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-25 20:18:40,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-25 20:18:40,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2817 transitions. [2023-08-25 20:18:40,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36978209503806775 [2023-08-25 20:18:40,010 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2817 transitions. [2023-08-25 20:18:40,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2817 transitions. [2023-08-25 20:18:40,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:18:40,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2817 transitions. [2023-08-25 20:18:40,014 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) [2023-08-25 20:18:40,019 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) [2023-08-25 20:18:40,020 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) [2023-08-25 20:18:40,020 INFO L175 Difference]: Start difference. First operand has 104 places, 85 transitions, 669 flow. Second operand 26 states and 2817 transitions. [2023-08-25 20:18:40,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 136 transitions, 1079 flow [2023-08-25 20:18:40,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 136 transitions, 954 flow, removed 8 selfloop flow, removed 17 redundant places. [2023-08-25 20:18:40,025 INFO L231 Difference]: Finished difference. Result has 100 places, 77 transitions, 605 flow [2023-08-25 20:18:40,025 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} [2023-08-25 20:18:40,025 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 64 predicate places. [2023-08-25 20:18:40,025 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 77 transitions, 605 flow [2023-08-25 20:18:40,026 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) [2023-08-25 20:18:40,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:18:40,026 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:18:40,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-25 20:18:40,231 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 [2023-08-25 20:18:40,231 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 20:18:40,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:18:40,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1847742941, now seen corresponding path program 5 times [2023-08-25 20:18:40,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:18:40,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624023660] [2023-08-25 20:18:40,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:18:40,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:18:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:18:40,388 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:40,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:18:40,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624023660] [2023-08-25 20:18:40,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624023660] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:18:40,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085657121] [2023-08-25 20:18:40,389 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 20:18:40,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:18:40,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:18:40,392 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:18:40,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-25 20:18:40,468 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-25 20:18:40,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:18:40,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 20:18:40,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:18:40,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:40,602 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:18:40,681 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:40,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085657121] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:18:40,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:18:40,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2023-08-25 20:18:40,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449360310] [2023-08-25 20:18:40,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:18:40,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-25 20:18:40,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:18:40,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-25 20:18:40,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2023-08-25 20:18:40,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 20:18:40,685 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) [2023-08-25 20:18:40,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:18:40,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 20:18:40,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:18:40,982 INFO L124 PetriNetUnfolderBase]: 166/319 cut-off events. [2023-08-25 20:18:40,983 INFO L125 PetriNetUnfolderBase]: For 491/491 co-relation queries the response was YES. [2023-08-25 20:18:40,983 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. [2023-08-25 20:18:40,985 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 52 selfloop transitions, 38 changer transitions 33/123 dead transitions. [2023-08-25 20:18:40,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 123 transitions, 1048 flow [2023-08-25 20:18:40,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-25 20:18:40,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-25 20:18:40,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1842 transitions. [2023-08-25 20:18:40,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3698052599879542 [2023-08-25 20:18:40,987 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1842 transitions. [2023-08-25 20:18:40,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1842 transitions. [2023-08-25 20:18:40,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:18:40,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1842 transitions. [2023-08-25 20:18:40,990 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) [2023-08-25 20:18:40,993 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) [2023-08-25 20:18:40,994 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) [2023-08-25 20:18:40,994 INFO L175 Difference]: Start difference. First operand has 100 places, 77 transitions, 605 flow. Second operand 17 states and 1842 transitions. [2023-08-25 20:18:40,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 123 transitions, 1048 flow [2023-08-25 20:18:40,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 123 transitions, 906 flow, removed 5 selfloop flow, removed 23 redundant places. [2023-08-25 20:18:41,000 INFO L231 Difference]: Finished difference. Result has 91 places, 69 transitions, 560 flow [2023-08-25 20:18:41,001 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} [2023-08-25 20:18:41,001 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 55 predicate places. [2023-08-25 20:18:41,001 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 69 transitions, 560 flow [2023-08-25 20:18:41,002 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) [2023-08-25 20:18:41,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:18:41,002 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:18:41,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-08-25 20:18:41,211 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 [2023-08-25 20:18:41,211 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 20:18:41,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:18:41,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1017168687, now seen corresponding path program 6 times [2023-08-25 20:18:41,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:18:41,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431708007] [2023-08-25 20:18:41,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:18:41,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:18:41,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:18:41,390 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:41,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:18:41,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431708007] [2023-08-25 20:18:41,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431708007] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:18:41,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991828513] [2023-08-25 20:18:41,390 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 20:18:41,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:18:41,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:18:41,391 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:18:41,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-25 20:18:41,500 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-25 20:18:41,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:18:41,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 20:18:41,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:18:41,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:41,638 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:18:41,768 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:41,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991828513] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:18:41,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:18:41,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-25 20:18:41,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590033181] [2023-08-25 20:18:41,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:18:41,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 20:18:41,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:18:41,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 20:18:41,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2023-08-25 20:18:41,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 20:18:41,772 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) [2023-08-25 20:18:41,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:18:41,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 20:18:41,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:18:42,292 INFO L124 PetriNetUnfolderBase]: 183/371 cut-off events. [2023-08-25 20:18:42,292 INFO L125 PetriNetUnfolderBase]: For 959/959 co-relation queries the response was YES. [2023-08-25 20:18:42,293 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. [2023-08-25 20:18:42,294 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 69 selfloop transitions, 62 changer transitions 16/147 dead transitions. [2023-08-25 20:18:42,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 147 transitions, 1253 flow [2023-08-25 20:18:42,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-25 20:18:42,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-25 20:18:42,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2712 transitions. [2023-08-25 20:18:42,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3702389078498293 [2023-08-25 20:18:42,297 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2712 transitions. [2023-08-25 20:18:42,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2712 transitions. [2023-08-25 20:18:42,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:18:42,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2712 transitions. [2023-08-25 20:18:42,300 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) [2023-08-25 20:18:42,305 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) [2023-08-25 20:18:42,305 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) [2023-08-25 20:18:42,305 INFO L175 Difference]: Start difference. First operand has 91 places, 69 transitions, 560 flow. Second operand 25 states and 2712 transitions. [2023-08-25 20:18:42,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 147 transitions, 1253 flow [2023-08-25 20:18:42,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 147 transitions, 1108 flow, removed 36 selfloop flow, removed 13 redundant places. [2023-08-25 20:18:42,312 INFO L231 Difference]: Finished difference. Result has 100 places, 89 transitions, 822 flow [2023-08-25 20:18:42,312 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} [2023-08-25 20:18:42,312 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 64 predicate places. [2023-08-25 20:18:42,312 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 89 transitions, 822 flow [2023-08-25 20:18:42,313 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) [2023-08-25 20:18:42,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:18:42,313 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:18:42,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-25 20:18:42,518 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 [2023-08-25 20:18:42,518 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 20:18:42,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:18:42,519 INFO L85 PathProgramCache]: Analyzing trace with hash -989463057, now seen corresponding path program 7 times [2023-08-25 20:18:42,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:18:42,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017633066] [2023-08-25 20:18:42,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:18:42,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:18:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:18:42,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:42,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:18:42,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017633066] [2023-08-25 20:18:42,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017633066] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:18:42,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697660217] [2023-08-25 20:18:42,675 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 20:18:42,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:18:42,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:18:42,676 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:18:42,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-25 20:18:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:18:42,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 20:18:42,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:18:42,915 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:42,916 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:18:43,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:43,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697660217] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:18:43,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:18:43,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-25 20:18:43,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852055576] [2023-08-25 20:18:43,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:18:43,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 20:18:43,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:18:43,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 20:18:43,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2023-08-25 20:18:43,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 20:18:43,034 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) [2023-08-25 20:18:43,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:18:43,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 20:18:43,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:18:43,516 INFO L124 PetriNetUnfolderBase]: 167/337 cut-off events. [2023-08-25 20:18:43,516 INFO L125 PetriNetUnfolderBase]: For 1432/1432 co-relation queries the response was YES. [2023-08-25 20:18:43,517 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. [2023-08-25 20:18:43,519 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 54 selfloop transitions, 54 changer transitions 23/131 dead transitions. [2023-08-25 20:18:43,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 131 transitions, 1246 flow [2023-08-25 20:18:43,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-25 20:18:43,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-25 20:18:43,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2380 transitions. [2023-08-25 20:18:43,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3692212224635433 [2023-08-25 20:18:43,521 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2380 transitions. [2023-08-25 20:18:43,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2380 transitions. [2023-08-25 20:18:43,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:18:43,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2380 transitions. [2023-08-25 20:18:43,524 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) [2023-08-25 20:18:43,528 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) [2023-08-25 20:18:43,529 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) [2023-08-25 20:18:43,529 INFO L175 Difference]: Start difference. First operand has 100 places, 89 transitions, 822 flow. Second operand 22 states and 2380 transitions. [2023-08-25 20:18:43,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 131 transitions, 1246 flow [2023-08-25 20:18:43,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 131 transitions, 1066 flow, removed 51 selfloop flow, removed 13 redundant places. [2023-08-25 20:18:43,537 INFO L231 Difference]: Finished difference. Result has 103 places, 81 transitions, 700 flow [2023-08-25 20:18:43,537 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} [2023-08-25 20:18:43,537 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 67 predicate places. [2023-08-25 20:18:43,538 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 81 transitions, 700 flow [2023-08-25 20:18:43,538 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) [2023-08-25 20:18:43,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:18:43,538 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:18:43,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-25 20:18:43,743 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 [2023-08-25 20:18:43,743 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 20:18:43,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:18:43,744 INFO L85 PathProgramCache]: Analyzing trace with hash -339020575, now seen corresponding path program 8 times [2023-08-25 20:18:43,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:18:43,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829196414] [2023-08-25 20:18:43,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:18:43,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:18:43,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:18:43,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:43,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:18:43,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829196414] [2023-08-25 20:18:43,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829196414] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:18:43,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311188493] [2023-08-25 20:18:43,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 20:18:43,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:18:43,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:18:43,902 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:18:43,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-25 20:18:44,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 20:18:44,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:18:44,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 20:18:44,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:18:44,154 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:44,154 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:18:44,274 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:18:44,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311188493] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:18:44,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:18:44,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-25 20:18:44,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587485399] [2023-08-25 20:18:44,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:18:44,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 20:18:44,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:18:44,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 20:18:44,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2023-08-25 20:18:44,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 20:18:44,279 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) [2023-08-25 20:18:44,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:18:44,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 20:18:44,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:18:44,927 INFO L124 PetriNetUnfolderBase]: 200/402 cut-off events. [2023-08-25 20:18:44,927 INFO L125 PetriNetUnfolderBase]: For 1966/1966 co-relation queries the response was YES. [2023-08-25 20:18:44,928 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. [2023-08-25 20:18:44,929 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 84 selfloop transitions, 64 changer transitions 19/167 dead transitions. [2023-08-25 20:18:44,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 167 transitions, 1507 flow [2023-08-25 20:18:44,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-25 20:18:44,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-25 20:18:44,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3135 transitions. [2023-08-25 20:18:44,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3689537483817818 [2023-08-25 20:18:44,932 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3135 transitions. [2023-08-25 20:18:44,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3135 transitions. [2023-08-25 20:18:44,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:18:44,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3135 transitions. [2023-08-25 20:18:44,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 108.10344827586206) internal successors, (3135), 29 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:18:44,941 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) [2023-08-25 20:18:44,942 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) [2023-08-25 20:18:44,942 INFO L175 Difference]: Start difference. First operand has 103 places, 81 transitions, 700 flow. Second operand 29 states and 3135 transitions. [2023-08-25 20:18:44,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 167 transitions, 1507 flow [2023-08-25 20:18:44,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 167 transitions, 1343 flow, removed 14 selfloop flow, removed 16 redundant places. [2023-08-25 20:18:44,950 INFO L231 Difference]: Finished difference. Result has 113 places, 99 transitions, 944 flow [2023-08-25 20:18:44,950 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} [2023-08-25 20:18:44,950 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 77 predicate places. [2023-08-25 20:18:44,950 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 99 transitions, 944 flow [2023-08-25 20:18:44,951 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) [2023-08-25 20:18:44,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:18:44,951 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:18:44,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-25 20:18:45,159 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 [2023-08-25 20:18:45,160 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 20:18:45,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:18:45,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1977245711, now seen corresponding path program 9 times [2023-08-25 20:18:45,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:18:45,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931195794] [2023-08-25 20:18:45,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:18:45,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:18:45,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:18:45,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:45,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:18:45,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931195794] [2023-08-25 20:18:45,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931195794] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:18:45,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475972247] [2023-08-25 20:18:45,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 20:18:45,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:18:45,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:18:45,320 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:18:45,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-25 20:18:45,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 20:18:45,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:18:45,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 20:18:45,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:18:45,561 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:45,561 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:18:45,689 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:18:45,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475972247] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:18:45,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:18:45,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-25 20:18:45,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202979584] [2023-08-25 20:18:45,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:18:45,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 20:18:45,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:18:45,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 20:18:45,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2023-08-25 20:18:45,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 20:18:45,696 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) [2023-08-25 20:18:45,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:18:45,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 20:18:45,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:18:46,207 INFO L124 PetriNetUnfolderBase]: 202/399 cut-off events. [2023-08-25 20:18:46,207 INFO L125 PetriNetUnfolderBase]: For 2997/2997 co-relation queries the response was YES. [2023-08-25 20:18:46,208 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. [2023-08-25 20:18:46,209 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 39 selfloop transitions, 20 changer transitions 94/153 dead transitions. [2023-08-25 20:18:46,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 153 transitions, 1521 flow [2023-08-25 20:18:46,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-25 20:18:46,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-25 20:18:46,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2384 transitions. [2023-08-25 20:18:46,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3698417623332299 [2023-08-25 20:18:46,211 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2384 transitions. [2023-08-25 20:18:46,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2384 transitions. [2023-08-25 20:18:46,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:18:46,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2384 transitions. [2023-08-25 20:18:46,213 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) [2023-08-25 20:18:46,217 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) [2023-08-25 20:18:46,218 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) [2023-08-25 20:18:46,218 INFO L175 Difference]: Start difference. First operand has 113 places, 99 transitions, 944 flow. Second operand 22 states and 2384 transitions. [2023-08-25 20:18:46,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 153 transitions, 1521 flow [2023-08-25 20:18:46,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 153 transitions, 1336 flow, removed 55 selfloop flow, removed 10 redundant places. [2023-08-25 20:18:46,228 INFO L231 Difference]: Finished difference. Result has 120 places, 44 transitions, 369 flow [2023-08-25 20:18:46,229 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} [2023-08-25 20:18:46,229 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 84 predicate places. [2023-08-25 20:18:46,229 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 44 transitions, 369 flow [2023-08-25 20:18:46,229 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) [2023-08-25 20:18:46,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:18:46,230 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:18:46,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-25 20:18:46,434 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 [2023-08-25 20:18:46,435 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 20:18:46,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:18:46,435 INFO L85 PathProgramCache]: Analyzing trace with hash -366726205, now seen corresponding path program 10 times [2023-08-25 20:18:46,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:18:46,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451008620] [2023-08-25 20:18:46,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:18:46,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:18:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:18:46,583 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:46,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:18:46,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451008620] [2023-08-25 20:18:46,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451008620] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:18:46,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298316486] [2023-08-25 20:18:46,583 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 20:18:46,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:18:46,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:18:46,584 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:18:46,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-25 20:18:46,678 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 20:18:46,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:18:46,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 20:18:46,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:18:46,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:46,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:18:46,892 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:18:46,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298316486] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:18:46,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:18:46,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-25 20:18:46,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99148500] [2023-08-25 20:18:46,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:18:46,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 20:18:46,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:18:46,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 20:18:46,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2023-08-25 20:18:46,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 20:18:46,894 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) [2023-08-25 20:18:46,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:18:46,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 20:18:46,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:18:47,254 INFO L124 PetriNetUnfolderBase]: 69/155 cut-off events. [2023-08-25 20:18:47,254 INFO L125 PetriNetUnfolderBase]: For 1390/1390 co-relation queries the response was YES. [2023-08-25 20:18:47,255 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. [2023-08-25 20:18:47,255 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 24 selfloop transitions, 8 changer transitions 46/78 dead transitions. [2023-08-25 20:18:47,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 78 transitions, 646 flow [2023-08-25 20:18:47,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-25 20:18:47,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-25 20:18:47,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1942 transitions. [2023-08-25 20:18:47,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36822146378460374 [2023-08-25 20:18:47,258 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1942 transitions. [2023-08-25 20:18:47,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1942 transitions. [2023-08-25 20:18:47,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:18:47,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1942 transitions. [2023-08-25 20:18:47,260 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) [2023-08-25 20:18:47,263 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) [2023-08-25 20:18:47,263 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) [2023-08-25 20:18:47,263 INFO L175 Difference]: Start difference. First operand has 120 places, 44 transitions, 369 flow. Second operand 18 states and 1942 transitions. [2023-08-25 20:18:47,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 78 transitions, 646 flow [2023-08-25 20:18:47,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 78 transitions, 499 flow, removed 32 selfloop flow, removed 29 redundant places. [2023-08-25 20:18:47,266 INFO L231 Difference]: Finished difference. Result has 73 places, 29 transitions, 175 flow [2023-08-25 20:18:47,267 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} [2023-08-25 20:18:47,267 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 37 predicate places. [2023-08-25 20:18:47,267 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 29 transitions, 175 flow [2023-08-25 20:18:47,267 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) [2023-08-25 20:18:47,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:18:47,268 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:18:47,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-25 20:18:47,473 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 [2023-08-25 20:18:47,473 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 20:18:47,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:18:47,474 INFO L85 PathProgramCache]: Analyzing trace with hash -460432681, now seen corresponding path program 11 times [2023-08-25 20:18:47,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:18:47,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939266482] [2023-08-25 20:18:47,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:18:47,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:18:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:18:47,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:47,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:18:47,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939266482] [2023-08-25 20:18:47,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939266482] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:18:47,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030508796] [2023-08-25 20:18:47,655 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 20:18:47,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:18:47,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:18:47,656 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:18:47,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-25 20:18:47,768 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 20:18:47,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:18:47,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 20:18:47,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:18:47,906 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:47,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:18:48,046 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:18:48,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030508796] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:18:48,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:18:48,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-25 20:18:48,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566194634] [2023-08-25 20:18:48,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:18:48,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 20:18:48,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:18:48,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 20:18:48,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2023-08-25 20:18:48,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 20:18:48,050 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) [2023-08-25 20:18:48,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:18:48,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 20:18:48,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:18:48,675 INFO L124 PetriNetUnfolderBase]: 80/194 cut-off events. [2023-08-25 20:18:48,676 INFO L125 PetriNetUnfolderBase]: For 475/475 co-relation queries the response was YES. [2023-08-25 20:18:48,676 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. [2023-08-25 20:18:48,677 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 66 selfloop transitions, 34 changer transitions 19/119 dead transitions. [2023-08-25 20:18:48,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 119 transitions, 788 flow [2023-08-25 20:18:48,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-25 20:18:48,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-25 20:18:48,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2825 transitions. [2023-08-25 20:18:48,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37083223943292204 [2023-08-25 20:18:48,682 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2825 transitions. [2023-08-25 20:18:48,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2825 transitions. [2023-08-25 20:18:48,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:18:48,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2825 transitions. [2023-08-25 20:18:48,685 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) [2023-08-25 20:18:48,688 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) [2023-08-25 20:18:48,688 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) [2023-08-25 20:18:48,688 INFO L175 Difference]: Start difference. First operand has 73 places, 29 transitions, 175 flow. Second operand 26 states and 2825 transitions. [2023-08-25 20:18:48,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 119 transitions, 788 flow [2023-08-25 20:18:48,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 119 transitions, 657 flow, removed 44 selfloop flow, removed 16 redundant places. [2023-08-25 20:18:48,690 INFO L231 Difference]: Finished difference. Result has 61 places, 48 transitions, 322 flow [2023-08-25 20:18:48,691 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} [2023-08-25 20:18:48,691 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 25 predicate places. [2023-08-25 20:18:48,691 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 48 transitions, 322 flow [2023-08-25 20:18:48,691 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) [2023-08-25 20:18:48,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:18:48,692 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:18:48,696 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-08-25 20:18:48,896 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 [2023-08-25 20:18:48,896 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 20:18:48,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:18:48,897 INFO L85 PathProgramCache]: Analyzing trace with hash -176222463, now seen corresponding path program 12 times [2023-08-25 20:18:48,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:18:48,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392361845] [2023-08-25 20:18:48,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:18:48,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:18:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:18:49,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:49,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:18:49,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392361845] [2023-08-25 20:18:49,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392361845] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:18:49,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288440975] [2023-08-25 20:18:49,045 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 20:18:49,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:18:49,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:18:49,046 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:18:49,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-25 20:18:49,142 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-25 20:18:49,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:18:49,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 20:18:49,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:18:49,271 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:49,272 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:18:49,382 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:18:49,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288440975] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:18:49,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:18:49,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-25 20:18:49,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820527146] [2023-08-25 20:18:49,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:18:49,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 20:18:49,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:18:49,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 20:18:49,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2023-08-25 20:18:49,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 20:18:49,385 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) [2023-08-25 20:18:49,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:18:49,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 20:18:49,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:18:49,814 INFO L124 PetriNetUnfolderBase]: 72/172 cut-off events. [2023-08-25 20:18:49,814 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2023-08-25 20:18:49,814 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. [2023-08-25 20:18:49,831 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 40 selfloop transitions, 33 changer transitions 15/88 dead transitions. [2023-08-25 20:18:49,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 88 transitions, 609 flow [2023-08-25 20:18:49,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-25 20:18:49,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-25 20:18:49,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2371 transitions. [2023-08-25 20:18:49,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36782500775674837 [2023-08-25 20:18:49,834 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2371 transitions. [2023-08-25 20:18:49,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2371 transitions. [2023-08-25 20:18:49,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:18:49,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2371 transitions. [2023-08-25 20:18:49,837 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) [2023-08-25 20:18:49,840 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) [2023-08-25 20:18:49,841 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) [2023-08-25 20:18:49,841 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 322 flow. Second operand 22 states and 2371 transitions. [2023-08-25 20:18:49,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 88 transitions, 609 flow [2023-08-25 20:18:49,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 88 transitions, 441 flow, removed 66 selfloop flow, removed 13 redundant places. [2023-08-25 20:18:49,843 INFO L231 Difference]: Finished difference. Result has 69 places, 48 transitions, 244 flow [2023-08-25 20:18:49,844 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} [2023-08-25 20:18:49,844 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2023-08-25 20:18:49,844 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 48 transitions, 244 flow [2023-08-25 20:18:49,845 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) [2023-08-25 20:18:49,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:18:49,845 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:18:49,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-25 20:18:50,050 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 [2023-08-25 20:18:50,050 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 20:18:50,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:18:50,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1814447599, now seen corresponding path program 13 times [2023-08-25 20:18:50,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:18:50,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957509364] [2023-08-25 20:18:50,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:18:50,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:18:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:18:50,226 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:50,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:18:50,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957509364] [2023-08-25 20:18:50,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957509364] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:18:50,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569420863] [2023-08-25 20:18:50,227 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 20:18:50,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:18:50,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:18:50,229 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:18:50,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-25 20:18:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:18:50,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 20:18:50,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:18:50,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:50,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:18:50,598 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:18:50,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569420863] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:18:50,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:18:50,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-25 20:18:50,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774390420] [2023-08-25 20:18:50,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:18:50,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 20:18:50,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:18:50,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 20:18:50,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2023-08-25 20:18:50,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 20:18:50,601 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) [2023-08-25 20:18:50,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:18:50,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 20:18:50,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:18:50,914 INFO L124 PetriNetUnfolderBase]: 77/177 cut-off events. [2023-08-25 20:18:50,914 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2023-08-25 20:18:50,915 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. [2023-08-25 20:18:50,915 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 27 selfloop transitions, 15 changer transitions 46/88 dead transitions. [2023-08-25 20:18:50,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 88 transitions, 517 flow [2023-08-25 20:18:50,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-25 20:18:50,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-25 20:18:50,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2055 transitions. [2023-08-25 20:18:50,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3691395724806898 [2023-08-25 20:18:50,918 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2055 transitions. [2023-08-25 20:18:50,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2055 transitions. [2023-08-25 20:18:50,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:18:50,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2055 transitions. [2023-08-25 20:18:50,921 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) [2023-08-25 20:18:50,923 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) [2023-08-25 20:18:50,924 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) [2023-08-25 20:18:50,924 INFO L175 Difference]: Start difference. First operand has 69 places, 48 transitions, 244 flow. Second operand 19 states and 2055 transitions. [2023-08-25 20:18:50,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 88 transitions, 517 flow [2023-08-25 20:18:50,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 88 transitions, 429 flow, removed 8 selfloop flow, removed 19 redundant places. [2023-08-25 20:18:50,926 INFO L231 Difference]: Finished difference. Result has 62 places, 34 transitions, 137 flow [2023-08-25 20:18:50,926 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} [2023-08-25 20:18:50,927 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2023-08-25 20:18:50,927 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 34 transitions, 137 flow [2023-08-25 20:18:50,930 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) [2023-08-25 20:18:50,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:18:50,932 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:18:50,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-25 20:18:51,137 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 [2023-08-25 20:18:51,138 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 20:18:51,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:18:51,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1690375879, now seen corresponding path program 14 times [2023-08-25 20:18:51,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:18:51,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657841361] [2023-08-25 20:18:51,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:18:51,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:18:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:18:51,291 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:51,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:18:51,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657841361] [2023-08-25 20:18:51,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657841361] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:18:51,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133122843] [2023-08-25 20:18:51,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 20:18:51,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:18:51,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:18:51,293 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:18:51,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-25 20:18:51,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 20:18:51,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:18:51,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 20:18:51,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:18:51,520 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:51,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:18:51,619 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:18:51,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133122843] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:18:51,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:18:51,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2023-08-25 20:18:51,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606391875] [2023-08-25 20:18:51,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:18:51,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-25 20:18:51,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:18:51,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-25 20:18:51,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2023-08-25 20:18:51,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 20:18:51,623 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) [2023-08-25 20:18:51,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:18:51,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 20:18:51,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:18:51,800 INFO L124 PetriNetUnfolderBase]: 37/82 cut-off events. [2023-08-25 20:18:51,800 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-25 20:18:51,800 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. [2023-08-25 20:18:51,801 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 0 selfloop transitions, 0 changer transitions 50/50 dead transitions. [2023-08-25 20:18:51,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 50 transitions, 273 flow [2023-08-25 20:18:51,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-25 20:18:51,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-25 20:18:51,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1603 transitions. [2023-08-25 20:18:51,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3647326507394767 [2023-08-25 20:18:51,803 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1603 transitions. [2023-08-25 20:18:51,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1603 transitions. [2023-08-25 20:18:51,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:18:51,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1603 transitions. [2023-08-25 20:18:51,805 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) [2023-08-25 20:18:51,807 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) [2023-08-25 20:18:51,808 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) [2023-08-25 20:18:51,808 INFO L175 Difference]: Start difference. First operand has 62 places, 34 transitions, 137 flow. Second operand 15 states and 1603 transitions. [2023-08-25 20:18:51,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 50 transitions, 273 flow [2023-08-25 20:18:51,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 50 transitions, 243 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-08-25 20:18:51,809 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2023-08-25 20:18:51,809 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} [2023-08-25 20:18:51,809 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 12 predicate places. [2023-08-25 20:18:51,810 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2023-08-25 20:18:51,810 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) [2023-08-25 20:18:51,812 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (25 of 26 remaining) [2023-08-25 20:18:51,812 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (24 of 26 remaining) [2023-08-25 20:18:51,812 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (23 of 26 remaining) [2023-08-25 20:18:51,812 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (22 of 26 remaining) [2023-08-25 20:18:51,813 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (21 of 26 remaining) [2023-08-25 20:18:51,813 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (20 of 26 remaining) [2023-08-25 20:18:51,813 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONDATA_RACE (19 of 26 remaining) [2023-08-25 20:18:51,813 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 26 remaining) [2023-08-25 20:18:51,813 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (17 of 26 remaining) [2023-08-25 20:18:51,813 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (16 of 26 remaining) [2023-08-25 20:18:51,813 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 26 remaining) [2023-08-25 20:18:51,813 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 26 remaining) [2023-08-25 20:18:51,813 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (13 of 26 remaining) [2023-08-25 20:18:51,813 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (12 of 26 remaining) [2023-08-25 20:18:51,814 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (11 of 26 remaining) [2023-08-25 20:18:51,814 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (10 of 26 remaining) [2023-08-25 20:18:51,814 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONASSERT (9 of 26 remaining) [2023-08-25 20:18:51,814 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 26 remaining) [2023-08-25 20:18:51,814 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 26 remaining) [2023-08-25 20:18:51,814 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (6 of 26 remaining) [2023-08-25 20:18:51,814 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (5 of 26 remaining) [2023-08-25 20:18:51,814 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (4 of 26 remaining) [2023-08-25 20:18:51,814 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (3 of 26 remaining) [2023-08-25 20:18:51,814 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (2 of 26 remaining) [2023-08-25 20:18:51,814 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (1 of 26 remaining) [2023-08-25 20:18:51,815 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONDATA_RACE (0 of 26 remaining) [2023-08-25 20:18:51,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-25 20:18:52,019 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 [2023-08-25 20:18:52,020 INFO L445 BasicCegarLoop]: Path program histogram: [14, 10, 6, 1] [2023-08-25 20:18:52,024 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-25 20:18:52,024 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 20:18:52,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 08:18:52 BasicIcfg [2023-08-25 20:18:52,026 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 20:18:52,027 INFO L158 Benchmark]: Toolchain (without parser) took 36837.95ms. Allocated memory was 346.0MB in the beginning and 627.0MB in the end (delta: 281.0MB). Free memory was 322.3MB in the beginning and 329.5MB in the end (delta: -7.2MB). Peak memory consumption was 275.8MB. Max. memory is 16.0GB. [2023-08-25 20:18:52,027 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 346.0MB. Free memory was 323.8MB in the beginning and 323.6MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 20:18:52,027 INFO L158 Benchmark]: CACSL2BoogieTranslator took 231.56ms. Allocated memory is still 346.0MB. Free memory was 322.3MB in the beginning and 311.4MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-25 20:18:52,028 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.80ms. Allocated memory is still 346.0MB. Free memory was 310.7MB in the beginning and 309.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 20:18:52,028 INFO L158 Benchmark]: Boogie Preprocessor took 44.60ms. Allocated memory is still 346.0MB. Free memory was 309.3MB in the beginning and 307.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 20:18:52,028 INFO L158 Benchmark]: RCFGBuilder took 575.35ms. Allocated memory is still 346.0MB. Free memory was 307.2MB in the beginning and 286.2MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-25 20:18:52,028 INFO L158 Benchmark]: TraceAbstraction took 35929.27ms. Allocated memory was 346.0MB in the beginning and 627.0MB in the end (delta: 281.0MB). Free memory was 285.6MB in the beginning and 329.5MB in the end (delta: -44.0MB). Peak memory consumption was 240.2MB. Max. memory is 16.0GB. [2023-08-25 20:18:52,029 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 346.0MB. Free memory was 323.8MB in the beginning and 323.6MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 231.56ms. Allocated memory is still 346.0MB. Free memory was 322.3MB in the beginning and 311.4MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 50.80ms. Allocated memory is still 346.0MB. Free memory was 310.7MB in the beginning and 309.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 44.60ms. Allocated memory is still 346.0MB. Free memory was 309.3MB in the beginning and 307.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 575.35ms. Allocated memory is still 346.0MB. Free memory was 307.2MB in the beginning and 286.2MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 35929.27ms. Allocated memory was 346.0MB in the beginning and 627.0MB in the end (delta: 281.0MB). Free memory was 285.6MB in the beginning and 329.5MB in the end (delta: -44.0MB). Peak memory consumption was 240.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.5s, 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: 35.8s, OverallIterations: 31, TraceHistogramMax: 2, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 12.6s, 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, 5.4s 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, 8.6s 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, 11.3s 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! [2023-08-25 20:18:52,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...