/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/pthread/triangular-longest-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 07:53:44,470 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 07:53:44,534 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 07:53:44,543 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 07:53:44,543 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 07:53:44,572 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 07:53:44,572 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 07:53:44,572 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 07:53:44,573 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 07:53:44,577 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 07:53:44,577 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 07:53:44,577 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 07:53:44,577 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 07:53:44,579 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 07:53:44,579 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 07:53:44,579 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 07:53:44,579 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 07:53:44,579 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 07:53:44,579 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 07:53:44,579 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 07:53:44,580 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 07:53:44,580 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 07:53:44,581 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 07:53:44,581 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 07:53:44,581 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 07:53:44,581 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 07:53:44,581 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 07:53:44,581 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 07:53:44,582 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 07:53:44,582 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 07:53:44,583 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 07:53:44,583 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 07:53:44,583 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 07:53:44,583 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 07:53:44,583 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 07:53:44,583 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 07:53:44,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 07:53:44,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 07:53:44,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 07:53:44,843 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 07:53:44,844 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 07:53:44,845 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-1.i [2023-08-25 07:53:45,787 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 07:53:46,058 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 07:53:46,059 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i [2023-08-25 07:53:46,070 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18c470903/9991436c223841b580927e150b0b75fc/FLAG91f4ffd6b [2023-08-25 07:53:46,081 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18c470903/9991436c223841b580927e150b0b75fc [2023-08-25 07:53:46,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 07:53:46,083 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 07:53:46,084 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 07:53:46,084 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 07:53:46,085 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 07:53:46,086 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:53:46" (1/1) ... [2023-08-25 07:53:46,086 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5798b6c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:53:46, skipping insertion in model container [2023-08-25 07:53:46,086 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:53:46" (1/1) ... [2023-08-25 07:53:46,132 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 07:53:46,355 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 07:53:46,363 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 07:53:46,384 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-25 07:53:46,385 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-25 07:53:46,402 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 07:53:46,424 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 07:53:46,424 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 07:53:46,428 INFO L206 MainTranslator]: Completed translation [2023-08-25 07:53:46,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:53:46 WrapperNode [2023-08-25 07:53:46,429 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 07:53:46,429 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 07:53:46,429 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 07:53:46,430 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 07:53:46,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:53:46" (1/1) ... [2023-08-25 07:53:46,455 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:53:46" (1/1) ... [2023-08-25 07:53:46,469 INFO L138 Inliner]: procedures = 169, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2023-08-25 07:53:46,470 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 07:53:46,470 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 07:53:46,470 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 07:53:46,471 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 07:53:46,476 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:53:46" (1/1) ... [2023-08-25 07:53:46,476 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:53:46" (1/1) ... [2023-08-25 07:53:46,480 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:53:46" (1/1) ... [2023-08-25 07:53:46,481 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:53:46" (1/1) ... [2023-08-25 07:53:46,494 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:53:46" (1/1) ... [2023-08-25 07:53:46,495 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:53:46" (1/1) ... [2023-08-25 07:53:46,496 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:53:46" (1/1) ... [2023-08-25 07:53:46,497 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:53:46" (1/1) ... [2023-08-25 07:53:46,498 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 07:53:46,499 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 07:53:46,499 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 07:53:46,499 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 07:53:46,499 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:53:46" (1/1) ... [2023-08-25 07:53:46,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 07:53:46,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:53:46,527 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 07:53:46,545 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 07:53:46,553 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-25 07:53:46,553 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-25 07:53:46,553 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-25 07:53:46,554 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-25 07:53:46,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 07:53:46,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-25 07:53:46,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 07:53:46,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 07:53:46,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 07:53:46,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 07:53:46,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-25 07:53:46,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 07:53:46,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 07:53:46,555 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 07:53:46,675 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 07:53:46,681 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 07:53:46,831 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 07:53:46,854 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 07:53:46,854 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-25 07:53:46,856 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:53:46 BoogieIcfgContainer [2023-08-25 07:53:46,856 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 07:53:46,857 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 07:53:46,858 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 07:53:46,859 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 07:53:46,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 07:53:46" (1/3) ... [2023-08-25 07:53:46,860 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e0c1778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:53:46, skipping insertion in model container [2023-08-25 07:53:46,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:53:46" (2/3) ... [2023-08-25 07:53:46,860 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e0c1778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:53:46, skipping insertion in model container [2023-08-25 07:53:46,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:53:46" (3/3) ... [2023-08-25 07:53:46,861 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2023-08-25 07:53:46,872 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 07:53:46,872 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-25 07:53:46,872 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 07:53:46,924 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-25 07:53:46,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 78 transitions, 166 flow [2023-08-25 07:53:46,994 INFO L124 PetriNetUnfolderBase]: 6/76 cut-off events. [2023-08-25 07:53:46,994 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 07:53:46,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 76 events. 6/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 119 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-08-25 07:53:46,998 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 78 transitions, 166 flow [2023-08-25 07:53:47,001 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 76 transitions, 158 flow [2023-08-25 07:53:47,003 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 07:53:47,013 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 76 transitions, 158 flow [2023-08-25 07:53:47,016 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 76 transitions, 158 flow [2023-08-25 07:53:47,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 76 transitions, 158 flow [2023-08-25 07:53:47,060 INFO L124 PetriNetUnfolderBase]: 6/76 cut-off events. [2023-08-25 07:53:47,060 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 07:53:47,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 76 events. 6/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 119 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-08-25 07:53:47,063 INFO L119 LiptonReduction]: Number of co-enabled transitions 1792 [2023-08-25 07:53:48,743 INFO L134 LiptonReduction]: Checked pairs total: 2074 [2023-08-25 07:53:48,743 INFO L136 LiptonReduction]: Total number of compositions: 78 [2023-08-25 07:53:48,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 07:53:48,761 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;@3e7dda4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 07:53:48,761 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-25 07:53:48,763 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 07:53:48,764 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2023-08-25 07:53:48,764 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 07:53:48,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:53:48,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-25 07:53:48,764 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:53:48,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:53:48,784 INFO L85 PathProgramCache]: Analyzing trace with hash 10943499, now seen corresponding path program 1 times [2023-08-25 07:53:48,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:53:48,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259561129] [2023-08-25 07:53:48,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:53:48,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:53:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:53:48,971 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 07:53:48,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:53:48,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259561129] [2023-08-25 07:53:48,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259561129] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:53:48,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:53:48,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-25 07:53:48,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289653674] [2023-08-25 07:53:48,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:53:48,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 07:53:48,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:53:49,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 07:53:49,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 07:53:49,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 156 [2023-08-25 07:53:49,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 44 flow. Second operand has 2 states, 2 states have (on average 63.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:49,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:53:49,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 156 [2023-08-25 07:53:49,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:53:49,051 INFO L124 PetriNetUnfolderBase]: 70/113 cut-off events. [2023-08-25 07:53:49,052 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 07:53:49,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 113 events. 70/113 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 256 event pairs, 44 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 228. Up to 114 conditions per place. [2023-08-25 07:53:49,054 INFO L140 encePairwiseOnDemand]: 150/156 looper letters, 12 selfloop transitions, 0 changer transitions 1/13 dead transitions. [2023-08-25 07:53:49,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 13 transitions, 58 flow [2023-08-25 07:53:49,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 07:53:49,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 07:53:49,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 141 transitions. [2023-08-25 07:53:49,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519230769230769 [2023-08-25 07:53:49,065 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 141 transitions. [2023-08-25 07:53:49,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 141 transitions. [2023-08-25 07:53:49,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:53:49,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 141 transitions. [2023-08-25 07:53:49,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:49,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:49,075 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:49,076 INFO L175 Difference]: Start difference. First operand has 24 places, 19 transitions, 44 flow. Second operand 2 states and 141 transitions. [2023-08-25 07:53:49,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 13 transitions, 58 flow [2023-08-25 07:53:49,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 13 transitions, 56 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 07:53:49,079 INFO L231 Difference]: Finished difference. Result has 17 places, 12 transitions, 28 flow [2023-08-25 07:53:49,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=28, PETRI_PLACES=17, PETRI_TRANSITIONS=12} [2023-08-25 07:53:49,082 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -7 predicate places. [2023-08-25 07:53:49,082 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 12 transitions, 28 flow [2023-08-25 07:53:49,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 63.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:49,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:53:49,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-25 07:53:49,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 07:53:49,083 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:53:49,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:53:49,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1927611490, now seen corresponding path program 1 times [2023-08-25 07:53:49,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:53:49,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91040655] [2023-08-25 07:53:49,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:53:49,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:53:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:53:49,245 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 07:53:49,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:53:49,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91040655] [2023-08-25 07:53:49,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91040655] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:53:49,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:53:49,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 07:53:49,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409301092] [2023-08-25 07:53:49,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:53:49,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 07:53:49,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:53:49,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 07:53:49,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 07:53:49,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:53:49,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 12 transitions, 28 flow. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:49,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:53:49,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:53:49,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:53:49,317 INFO L124 PetriNetUnfolderBase]: 84/143 cut-off events. [2023-08-25 07:53:49,317 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 07:53:49,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 143 events. 84/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 393 event pairs, 15 based on Foata normal form. 15/119 useless extension candidates. Maximal degree in co-relation 298. Up to 86 conditions per place. [2023-08-25 07:53:49,318 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 23 selfloop transitions, 7 changer transitions 2/32 dead transitions. [2023-08-25 07:53:49,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 32 transitions, 134 flow [2023-08-25 07:53:49,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 07:53:49,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 07:53:49,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 314 transitions. [2023-08-25 07:53:49,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025641025641026 [2023-08-25 07:53:49,320 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 314 transitions. [2023-08-25 07:53:49,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 314 transitions. [2023-08-25 07:53:49,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:53:49,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 314 transitions. [2023-08-25 07:53:49,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:49,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:49,323 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:49,323 INFO L175 Difference]: Start difference. First operand has 17 places, 12 transitions, 28 flow. Second operand 5 states and 314 transitions. [2023-08-25 07:53:49,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 32 transitions, 134 flow [2023-08-25 07:53:49,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 32 transitions, 134 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 07:53:49,324 INFO L231 Difference]: Finished difference. Result has 23 places, 18 transitions, 75 flow [2023-08-25 07:53:49,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=75, PETRI_PLACES=23, PETRI_TRANSITIONS=18} [2023-08-25 07:53:49,325 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -1 predicate places. [2023-08-25 07:53:49,325 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 18 transitions, 75 flow [2023-08-25 07:53:49,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:49,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:53:49,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:53:49,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 07:53:49,326 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:53:49,326 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:53:49,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1337591207, now seen corresponding path program 1 times [2023-08-25 07:53:49,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:53:49,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020057679] [2023-08-25 07:53:49,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:53:49,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:53:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:53:49,396 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 07:53:49,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:53:49,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020057679] [2023-08-25 07:53:49,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020057679] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:53:49,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:53:49,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 07:53:49,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536740543] [2023-08-25 07:53:49,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:53:49,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 07:53:49,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:53:49,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 07:53:49,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-25 07:53:49,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:53:49,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 18 transitions, 75 flow. Second operand has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:49,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:53:49,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:53:49,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:53:49,446 INFO L124 PetriNetUnfolderBase]: 92/157 cut-off events. [2023-08-25 07:53:49,447 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-25 07:53:49,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 157 events. 92/157 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 438 event pairs, 19 based on Foata normal form. 6/163 useless extension candidates. Maximal degree in co-relation 448. Up to 61 conditions per place. [2023-08-25 07:53:49,448 INFO L140 encePairwiseOnDemand]: 152/156 looper letters, 20 selfloop transitions, 8 changer transitions 2/30 dead transitions. [2023-08-25 07:53:49,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 30 transitions, 173 flow [2023-08-25 07:53:49,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 07:53:49,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 07:53:49,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 249 transitions. [2023-08-25 07:53:49,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39903846153846156 [2023-08-25 07:53:49,450 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 249 transitions. [2023-08-25 07:53:49,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 249 transitions. [2023-08-25 07:53:49,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:53:49,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 249 transitions. [2023-08-25 07:53:49,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 62.25) internal successors, (249), 4 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 07:53:49,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:49,452 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:49,452 INFO L175 Difference]: Start difference. First operand has 23 places, 18 transitions, 75 flow. Second operand 4 states and 249 transitions. [2023-08-25 07:53:49,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 30 transitions, 173 flow [2023-08-25 07:53:49,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 30 transitions, 173 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 07:53:49,453 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 119 flow [2023-08-25 07:53:49,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=28, PETRI_TRANSITIONS=21} [2023-08-25 07:53:49,454 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 4 predicate places. [2023-08-25 07:53:49,454 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 119 flow [2023-08-25 07:53:49,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:49,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:53:49,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:53:49,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 07:53:49,455 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:53:49,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:53:49,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1303192770, now seen corresponding path program 1 times [2023-08-25 07:53:49,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:53:49,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005332373] [2023-08-25 07:53:49,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:53:49,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:53:49,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:53:49,520 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 07:53:49,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:53:49,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005332373] [2023-08-25 07:53:49,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005332373] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:53:49,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:53:49,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 07:53:49,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572967736] [2023-08-25 07:53:49,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:53:49,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 07:53:49,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:53:49,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 07:53:49,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 07:53:49,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:53:49,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:49,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:53:49,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:53:49,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:53:49,584 INFO L124 PetriNetUnfolderBase]: 132/229 cut-off events. [2023-08-25 07:53:49,584 INFO L125 PetriNetUnfolderBase]: For 291/291 co-relation queries the response was YES. [2023-08-25 07:53:49,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 758 conditions, 229 events. 132/229 cut-off events. For 291/291 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 713 event pairs, 23 based on Foata normal form. 10/239 useless extension candidates. Maximal degree in co-relation 748. Up to 101 conditions per place. [2023-08-25 07:53:49,586 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 34 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2023-08-25 07:53:49,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 45 transitions, 301 flow [2023-08-25 07:53:49,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 07:53:49,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 07:53:49,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 374 transitions. [2023-08-25 07:53:49,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3995726495726496 [2023-08-25 07:53:49,587 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 374 transitions. [2023-08-25 07:53:49,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 374 transitions. [2023-08-25 07:53:49,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:53:49,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 374 transitions. [2023-08-25 07:53:49,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 62.333333333333336) internal successors, (374), 6 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:49,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 156.0) internal successors, (1092), 7 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:49,590 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 156.0) internal successors, (1092), 7 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:49,590 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 119 flow. Second operand 6 states and 374 transitions. [2023-08-25 07:53:49,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 45 transitions, 301 flow [2023-08-25 07:53:49,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 45 transitions, 285 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-08-25 07:53:49,592 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 203 flow [2023-08-25 07:53:49,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=203, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2023-08-25 07:53:49,593 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 12 predicate places. [2023-08-25 07:53:49,593 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 203 flow [2023-08-25 07:53:49,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:49,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:53:49,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:53:49,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 07:53:49,594 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:53:49,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:53:49,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1303209510, now seen corresponding path program 2 times [2023-08-25 07:53:49,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:53:49,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255407746] [2023-08-25 07:53:49,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:53:49,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:53:49,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:53:49,722 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 07:53:49,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:53:49,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255407746] [2023-08-25 07:53:49,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255407746] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:53:49,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:53:49,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 07:53:49,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702381539] [2023-08-25 07:53:49,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:53:49,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 07:53:49,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:53:49,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 07:53:49,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-25 07:53:49,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:53:49,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:49,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:53:49,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:53:49,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:53:49,783 INFO L124 PetriNetUnfolderBase]: 114/199 cut-off events. [2023-08-25 07:53:49,783 INFO L125 PetriNetUnfolderBase]: For 486/486 co-relation queries the response was YES. [2023-08-25 07:53:49,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 775 conditions, 199 events. 114/199 cut-off events. For 486/486 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 611 event pairs, 23 based on Foata normal form. 10/209 useless extension candidates. Maximal degree in co-relation 761. Up to 84 conditions per place. [2023-08-25 07:53:49,784 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 29 selfloop transitions, 11 changer transitions 4/44 dead transitions. [2023-08-25 07:53:49,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 44 transitions, 349 flow [2023-08-25 07:53:49,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 07:53:49,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 07:53:49,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 313 transitions. [2023-08-25 07:53:49,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4012820512820513 [2023-08-25 07:53:49,798 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 313 transitions. [2023-08-25 07:53:49,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 313 transitions. [2023-08-25 07:53:49,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:53:49,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 313 transitions. [2023-08-25 07:53:49,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:49,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:49,800 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:49,800 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 203 flow. Second operand 5 states and 313 transitions. [2023-08-25 07:53:49,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 44 transitions, 349 flow [2023-08-25 07:53:49,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 335 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-08-25 07:53:49,803 INFO L231 Difference]: Finished difference. Result has 42 places, 29 transitions, 236 flow [2023-08-25 07:53:49,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=236, PETRI_PLACES=42, PETRI_TRANSITIONS=29} [2023-08-25 07:53:49,817 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 18 predicate places. [2023-08-25 07:53:49,817 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions, 236 flow [2023-08-25 07:53:49,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:49,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:53:49,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:53:49,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 07:53:49,817 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:53:49,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:53:49,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1194528409, now seen corresponding path program 1 times [2023-08-25 07:53:49,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:53:49,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531763792] [2023-08-25 07:53:49,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:53:49,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:53:49,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:53:49,907 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 07:53:49,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:53:49,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531763792] [2023-08-25 07:53:49,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531763792] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:53:49,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:53:49,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 07:53:49,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148974049] [2023-08-25 07:53:49,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:53:49,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 07:53:49,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:53:49,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 07:53:49,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-25 07:53:49,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:53:49,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions, 236 flow. Second operand has 6 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:49,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:53:49,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:53:49,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:53:50,012 INFO L124 PetriNetUnfolderBase]: 150/263 cut-off events. [2023-08-25 07:53:50,012 INFO L125 PetriNetUnfolderBase]: For 1059/1059 co-relation queries the response was YES. [2023-08-25 07:53:50,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1095 conditions, 263 events. 150/263 cut-off events. For 1059/1059 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 861 event pairs, 20 based on Foata normal form. 8/271 useless extension candidates. Maximal degree in co-relation 1078. Up to 73 conditions per place. [2023-08-25 07:53:50,013 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 35 selfloop transitions, 20 changer transitions 3/58 dead transitions. [2023-08-25 07:53:50,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 58 transitions, 496 flow [2023-08-25 07:53:50,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-25 07:53:50,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-25 07:53:50,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 494 transitions. [2023-08-25 07:53:50,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2023-08-25 07:53:50,017 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 494 transitions. [2023-08-25 07:53:50,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 494 transitions. [2023-08-25 07:53:50,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:53:50,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 494 transitions. [2023-08-25 07:53:50,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 61.75) internal successors, (494), 8 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:50,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 156.0) internal successors, (1404), 9 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:50,020 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 156.0) internal successors, (1404), 9 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:50,020 INFO L175 Difference]: Start difference. First operand has 42 places, 29 transitions, 236 flow. Second operand 8 states and 494 transitions. [2023-08-25 07:53:50,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 58 transitions, 496 flow [2023-08-25 07:53:50,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 58 transitions, 457 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-08-25 07:53:50,023 INFO L231 Difference]: Finished difference. Result has 49 places, 35 transitions, 336 flow [2023-08-25 07:53:50,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=336, PETRI_PLACES=49, PETRI_TRANSITIONS=35} [2023-08-25 07:53:50,026 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 25 predicate places. [2023-08-25 07:53:50,028 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 35 transitions, 336 flow [2023-08-25 07:53:50,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:50,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:53:50,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:53:50,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 07:53:50,028 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:53:50,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:53:50,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1229400619, now seen corresponding path program 2 times [2023-08-25 07:53:50,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:53:50,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574711315] [2023-08-25 07:53:50,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:53:50,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:53:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:53:50,155 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 07:53:50,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:53:50,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574711315] [2023-08-25 07:53:50,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574711315] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:53:50,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:53:50,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 07:53:50,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436957393] [2023-08-25 07:53:50,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:53:50,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 07:53:50,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:53:50,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 07:53:50,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-25 07:53:50,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:53:50,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 35 transitions, 336 flow. Second operand has 6 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:50,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:53:50,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:53:50,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:53:50,244 INFO L124 PetriNetUnfolderBase]: 138/243 cut-off events. [2023-08-25 07:53:50,244 INFO L125 PetriNetUnfolderBase]: For 1276/1276 co-relation queries the response was YES. [2023-08-25 07:53:50,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1150 conditions, 243 events. 138/243 cut-off events. For 1276/1276 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 813 event pairs, 20 based on Foata normal form. 8/251 useless extension candidates. Maximal degree in co-relation 1130. Up to 69 conditions per place. [2023-08-25 07:53:50,245 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 27 selfloop transitions, 20 changer transitions 8/55 dead transitions. [2023-08-25 07:53:50,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 55 transitions, 552 flow [2023-08-25 07:53:50,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 07:53:50,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 07:53:50,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 432 transitions. [2023-08-25 07:53:50,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3956043956043956 [2023-08-25 07:53:50,247 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 432 transitions. [2023-08-25 07:53:50,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 432 transitions. [2023-08-25 07:53:50,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:53:50,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 432 transitions. [2023-08-25 07:53:50,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 61.714285714285715) internal successors, (432), 7 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:50,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:50,249 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:50,249 INFO L175 Difference]: Start difference. First operand has 49 places, 35 transitions, 336 flow. Second operand 7 states and 432 transitions. [2023-08-25 07:53:50,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 55 transitions, 552 flow [2023-08-25 07:53:50,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 55 transitions, 501 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-08-25 07:53:50,254 INFO L231 Difference]: Finished difference. Result has 54 places, 36 transitions, 360 flow [2023-08-25 07:53:50,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=360, PETRI_PLACES=54, PETRI_TRANSITIONS=36} [2023-08-25 07:53:50,254 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 30 predicate places. [2023-08-25 07:53:50,254 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 36 transitions, 360 flow [2023-08-25 07:53:50,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:50,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:53:50,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:53:50,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 07:53:50,255 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:53:50,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:53:50,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1194458659, now seen corresponding path program 3 times [2023-08-25 07:53:50,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:53:50,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483280318] [2023-08-25 07:53:50,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:53:50,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:53:50,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:53:50,351 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 07:53:50,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:53:50,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483280318] [2023-08-25 07:53:50,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483280318] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:53:50,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:53:50,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 07:53:50,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443725331] [2023-08-25 07:53:50,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:53:50,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 07:53:50,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:53:50,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 07:53:50,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-25 07:53:50,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:53:50,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 36 transitions, 360 flow. Second operand has 6 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:50,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:53:50,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:53:50,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:53:50,474 INFO L124 PetriNetUnfolderBase]: 150/263 cut-off events. [2023-08-25 07:53:50,475 INFO L125 PetriNetUnfolderBase]: For 1545/1545 co-relation queries the response was YES. [2023-08-25 07:53:50,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1279 conditions, 263 events. 150/263 cut-off events. For 1545/1545 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 904 event pairs, 33 based on Foata normal form. 4/267 useless extension candidates. Maximal degree in co-relation 1257. Up to 130 conditions per place. [2023-08-25 07:53:50,476 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 38 selfloop transitions, 16 changer transitions 12/66 dead transitions. [2023-08-25 07:53:50,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 646 flow [2023-08-25 07:53:50,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 07:53:50,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 07:53:50,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 556 transitions. [2023-08-25 07:53:50,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396011396011396 [2023-08-25 07:53:50,478 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 556 transitions. [2023-08-25 07:53:50,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 556 transitions. [2023-08-25 07:53:50,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:53:50,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 556 transitions. [2023-08-25 07:53:50,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 61.77777777777778) internal successors, (556), 9 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:50,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 156.0) internal successors, (1560), 10 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:50,480 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 156.0) internal successors, (1560), 10 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:50,481 INFO L175 Difference]: Start difference. First operand has 54 places, 36 transitions, 360 flow. Second operand 9 states and 556 transitions. [2023-08-25 07:53:50,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 646 flow [2023-08-25 07:53:50,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 66 transitions, 596 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-08-25 07:53:50,485 INFO L231 Difference]: Finished difference. Result has 59 places, 39 transitions, 401 flow [2023-08-25 07:53:50,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=401, PETRI_PLACES=59, PETRI_TRANSITIONS=39} [2023-08-25 07:53:50,486 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 35 predicate places. [2023-08-25 07:53:50,486 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 39 transitions, 401 flow [2023-08-25 07:53:50,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:50,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:53:50,486 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:53:50,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 07:53:50,487 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:53:50,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:53:50,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1623786141, now seen corresponding path program 4 times [2023-08-25 07:53:50,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:53:50,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027687322] [2023-08-25 07:53:50,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:53:50,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:53:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:53:50,548 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 07:53:50,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:53:50,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027687322] [2023-08-25 07:53:50,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027687322] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:53:50,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14991690] [2023-08-25 07:53:50,548 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 07:53:50,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:53:50,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:53:50,558 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 07:53:50,559 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 07:53:50,617 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 07:53:50,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:53:50,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-25 07:53:50,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:53:50,707 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 07:53:50,708 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:53:50,766 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 07:53:50,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14991690] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:53:50,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:53:50,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-25 07:53:50,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479904563] [2023-08-25 07:53:50,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:53:50,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 07:53:50,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:53:50,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 07:53:50,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-08-25 07:53:50,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:53:50,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 39 transitions, 401 flow. Second operand has 12 states, 12 states have (on average 57.916666666666664) internal successors, (695), 12 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:50,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:53:50,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:53:50,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:53:50,980 INFO L124 PetriNetUnfolderBase]: 198/343 cut-off events. [2023-08-25 07:53:50,980 INFO L125 PetriNetUnfolderBase]: For 2474/2474 co-relation queries the response was YES. [2023-08-25 07:53:50,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1751 conditions, 343 events. 198/343 cut-off events. For 2474/2474 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1152 event pairs, 18 based on Foata normal form. 16/359 useless extension candidates. Maximal degree in co-relation 1727. Up to 91 conditions per place. [2023-08-25 07:53:50,982 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 34 selfloop transitions, 35 changer transitions 22/91 dead transitions. [2023-08-25 07:53:50,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 91 transitions, 987 flow [2023-08-25 07:53:50,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-25 07:53:50,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-25 07:53:50,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 858 transitions. [2023-08-25 07:53:50,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2023-08-25 07:53:50,984 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 858 transitions. [2023-08-25 07:53:50,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 858 transitions. [2023-08-25 07:53:50,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:53:50,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 858 transitions. [2023-08-25 07:53:50,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 61.285714285714285) internal successors, (858), 14 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:50,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 156.0) internal successors, (2340), 15 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:50,989 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 156.0) internal successors, (2340), 15 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:50,989 INFO L175 Difference]: Start difference. First operand has 59 places, 39 transitions, 401 flow. Second operand 14 states and 858 transitions. [2023-08-25 07:53:50,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 91 transitions, 987 flow [2023-08-25 07:53:50,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 91 transitions, 950 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-25 07:53:50,994 INFO L231 Difference]: Finished difference. Result has 72 places, 55 transitions, 723 flow [2023-08-25 07:53:50,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=723, PETRI_PLACES=72, PETRI_TRANSITIONS=55} [2023-08-25 07:53:50,995 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 48 predicate places. [2023-08-25 07:53:50,996 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 55 transitions, 723 flow [2023-08-25 07:53:50,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 57.916666666666664) internal successors, (695), 12 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:50,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:53:50,997 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:53:51,005 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 07:53:51,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:53:51,205 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:53:51,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:53:51,206 INFO L85 PathProgramCache]: Analyzing trace with hash 2076322240, now seen corresponding path program 5 times [2023-08-25 07:53:51,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:53:51,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988972768] [2023-08-25 07:53:51,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:53:51,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:53:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:53:51,312 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:53:51,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:53:51,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988972768] [2023-08-25 07:53:51,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988972768] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:53:51,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089898129] [2023-08-25 07:53:51,312 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 07:53:51,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:53:51,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:53:51,329 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 07:53:51,393 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 07:53:51,447 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-25 07:53:51,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:53:51,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 07:53:51,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:53:51,484 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:53:51,485 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:53:51,583 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:53:51,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089898129] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:53:51,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:53:51,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-08-25 07:53:51,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123546457] [2023-08-25 07:53:51,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:53:51,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-25 07:53:51,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:53:51,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-25 07:53:51,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-08-25 07:53:51,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:53:51,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 55 transitions, 723 flow. Second operand has 16 states, 16 states have (on average 57.8125) internal successors, (925), 16 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:51,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:53:51,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:53:51,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:53:51,788 INFO L124 PetriNetUnfolderBase]: 254/455 cut-off events. [2023-08-25 07:53:51,788 INFO L125 PetriNetUnfolderBase]: For 5613/5613 co-relation queries the response was YES. [2023-08-25 07:53:51,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2627 conditions, 455 events. 254/455 cut-off events. For 5613/5613 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1590 event pairs, 55 based on Foata normal form. 32/487 useless extension candidates. Maximal degree in co-relation 2598. Up to 249 conditions per place. [2023-08-25 07:53:51,791 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 65 selfloop transitions, 25 changer transitions 27/117 dead transitions. [2023-08-25 07:53:51,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 117 transitions, 1537 flow [2023-08-25 07:53:51,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-25 07:53:51,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-25 07:53:51,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 979 transitions. [2023-08-25 07:53:51,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3922275641025641 [2023-08-25 07:53:51,794 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 979 transitions. [2023-08-25 07:53:51,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 979 transitions. [2023-08-25 07:53:51,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:53:51,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 979 transitions. [2023-08-25 07:53:51,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 61.1875) internal successors, (979), 16 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:51,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 156.0) internal successors, (2652), 17 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:51,798 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 156.0) internal successors, (2652), 17 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:51,798 INFO L175 Difference]: Start difference. First operand has 72 places, 55 transitions, 723 flow. Second operand 16 states and 979 transitions. [2023-08-25 07:53:51,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 117 transitions, 1537 flow [2023-08-25 07:53:51,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 117 transitions, 1160 flow, removed 175 selfloop flow, removed 5 redundant places. [2023-08-25 07:53:51,809 INFO L231 Difference]: Finished difference. Result has 92 places, 69 transitions, 808 flow [2023-08-25 07:53:51,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=808, PETRI_PLACES=92, PETRI_TRANSITIONS=69} [2023-08-25 07:53:51,809 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 68 predicate places. [2023-08-25 07:53:51,809 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 69 transitions, 808 flow [2023-08-25 07:53:51,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 57.8125) internal successors, (925), 16 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:51,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:53:51,810 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:53:51,821 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 07:53:52,021 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,SelfDestructingSolverStorable9 [2023-08-25 07:53:52,022 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:53:52,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:53:52,022 INFO L85 PathProgramCache]: Analyzing trace with hash 291972828, now seen corresponding path program 6 times [2023-08-25 07:53:52,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:53:52,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439368685] [2023-08-25 07:53:52,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:53:52,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:53:52,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:53:52,116 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:53:52,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:53:52,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439368685] [2023-08-25 07:53:52,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439368685] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:53:52,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271958083] [2023-08-25 07:53:52,117 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 07:53:52,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:53:52,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:53:52,118 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 07:53:52,120 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 07:53:52,179 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-25 07:53:52,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:53:52,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 07:53:52,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:53:52,225 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:53:52,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:53:52,324 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:53:52,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271958083] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:53:52,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:53:52,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-25 07:53:52,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817253865] [2023-08-25 07:53:52,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:53:52,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-25 07:53:52,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:53:52,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-25 07:53:52,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-08-25 07:53:52,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:53:52,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 69 transitions, 808 flow. Second operand has 17 states, 17 states have (on average 57.8235294117647) internal successors, (983), 17 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:52,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:53:52,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:53:52,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:53:52,701 INFO L124 PetriNetUnfolderBase]: 408/747 cut-off events. [2023-08-25 07:53:52,701 INFO L125 PetriNetUnfolderBase]: For 15120/15120 co-relation queries the response was YES. [2023-08-25 07:53:52,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4329 conditions, 747 events. 408/747 cut-off events. For 15120/15120 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3272 event pairs, 44 based on Foata normal form. 32/779 useless extension candidates. Maximal degree in co-relation 4291. Up to 233 conditions per place. [2023-08-25 07:53:52,706 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 73 selfloop transitions, 71 changer transitions 37/181 dead transitions. [2023-08-25 07:53:52,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 181 transitions, 2194 flow [2023-08-25 07:53:52,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-25 07:53:52,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-25 07:53:52,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1346 transitions. [2023-08-25 07:53:52,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3921911421911422 [2023-08-25 07:53:52,710 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1346 transitions. [2023-08-25 07:53:52,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1346 transitions. [2023-08-25 07:53:52,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:53:52,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1346 transitions. [2023-08-25 07:53:52,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 61.18181818181818) internal successors, (1346), 22 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:52,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 156.0) internal successors, (3588), 23 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:52,716 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 156.0) internal successors, (3588), 23 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:52,716 INFO L175 Difference]: Start difference. First operand has 92 places, 69 transitions, 808 flow. Second operand 22 states and 1346 transitions. [2023-08-25 07:53:52,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 181 transitions, 2194 flow [2023-08-25 07:53:52,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 181 transitions, 2082 flow, removed 48 selfloop flow, removed 4 redundant places. [2023-08-25 07:53:52,759 INFO L231 Difference]: Finished difference. Result has 123 places, 107 transitions, 1553 flow [2023-08-25 07:53:52,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1553, PETRI_PLACES=123, PETRI_TRANSITIONS=107} [2023-08-25 07:53:52,759 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 99 predicate places. [2023-08-25 07:53:52,759 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 107 transitions, 1553 flow [2023-08-25 07:53:52,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 57.8235294117647) internal successors, (983), 17 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:52,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:53:52,760 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:53:52,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-25 07:53:52,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:53:52,965 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:53:52,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:53:52,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1663879424, now seen corresponding path program 7 times [2023-08-25 07:53:52,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:53:52,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723405553] [2023-08-25 07:53:52,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:53:52,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:53:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:53:53,066 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:53:53,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:53:53,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723405553] [2023-08-25 07:53:53,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723405553] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:53:53,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448014595] [2023-08-25 07:53:53,066 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 07:53:53,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:53:53,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:53:53,067 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 07:53:53,110 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 07:53:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:53:53,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 07:53:53,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:53:53,185 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:53:53,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:53:53,251 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:53:53,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448014595] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:53:53,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:53:53,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-08-25 07:53:53,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321106380] [2023-08-25 07:53:53,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:53:53,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-25 07:53:53,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:53:53,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-25 07:53:53,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-08-25 07:53:53,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:53:53,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 107 transitions, 1553 flow. Second operand has 16 states, 16 states have (on average 57.8125) internal successors, (925), 16 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:53,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:53:53,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:53:53,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:53:53,794 INFO L124 PetriNetUnfolderBase]: 632/1131 cut-off events. [2023-08-25 07:53:53,794 INFO L125 PetriNetUnfolderBase]: For 41223/41223 co-relation queries the response was YES. [2023-08-25 07:53:53,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8448 conditions, 1131 events. 632/1131 cut-off events. For 41223/41223 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5374 event pairs, 27 based on Foata normal form. 32/1163 useless extension candidates. Maximal degree in co-relation 8395. Up to 369 conditions per place. [2023-08-25 07:53:53,816 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 71 selfloop transitions, 133 changer transitions 46/250 dead transitions. [2023-08-25 07:53:53,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 250 transitions, 3947 flow [2023-08-25 07:53:53,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-25 07:53:53,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-25 07:53:53,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1591 transitions. [2023-08-25 07:53:53,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.392258382642998 [2023-08-25 07:53:53,835 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 1591 transitions. [2023-08-25 07:53:53,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 1591 transitions. [2023-08-25 07:53:53,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:53:53,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 1591 transitions. [2023-08-25 07:53:53,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 61.19230769230769) internal successors, (1591), 26 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:53,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 156.0) internal successors, (4212), 27 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:53,842 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 156.0) internal successors, (4212), 27 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:53,842 INFO L175 Difference]: Start difference. First operand has 123 places, 107 transitions, 1553 flow. Second operand 26 states and 1591 transitions. [2023-08-25 07:53:53,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 250 transitions, 3947 flow [2023-08-25 07:53:53,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 250 transitions, 3577 flow, removed 173 selfloop flow, removed 6 redundant places. [2023-08-25 07:53:53,951 INFO L231 Difference]: Finished difference. Result has 156 places, 161 transitions, 2715 flow [2023-08-25 07:53:53,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=1279, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2715, PETRI_PLACES=156, PETRI_TRANSITIONS=161} [2023-08-25 07:53:53,952 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 132 predicate places. [2023-08-25 07:53:53,952 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 161 transitions, 2715 flow [2023-08-25 07:53:53,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 57.8125) internal successors, (925), 16 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:53,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:53:53,953 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:53:53,968 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 07:53:54,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:53:54,166 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:53:54,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:53:54,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1789443084, now seen corresponding path program 8 times [2023-08-25 07:53:54,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:53:54,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296840310] [2023-08-25 07:53:54,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:53:54,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:53:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:53:54,302 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:53:54,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:53:54,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296840310] [2023-08-25 07:53:54,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296840310] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:53:54,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433528751] [2023-08-25 07:53:54,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 07:53:54,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:53:54,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:53:54,303 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 07:53:54,305 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 07:53:54,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 07:53:54,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:53:54,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-25 07:53:54,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:53:54,408 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:53:54,408 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:53:54,560 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:53:54,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433528751] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:53:54,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:53:54,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2023-08-25 07:53:54,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093278471] [2023-08-25 07:53:54,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:53:54,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-25 07:53:54,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:53:54,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-25 07:53:54,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=479, Unknown=0, NotChecked=0, Total=600 [2023-08-25 07:53:54,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:53:54,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 161 transitions, 2715 flow. Second operand has 25 states, 25 states have (on average 57.44) internal successors, (1436), 25 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:54,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:53:54,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:53:54,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:53:55,160 INFO L124 PetriNetUnfolderBase]: 868/1603 cut-off events. [2023-08-25 07:53:55,160 INFO L125 PetriNetUnfolderBase]: For 100387/100387 co-relation queries the response was YES. [2023-08-25 07:53:55,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15126 conditions, 1603 events. 868/1603 cut-off events. For 100387/100387 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8692 event pairs, 62 based on Foata normal form. 40/1643 useless extension candidates. Maximal degree in co-relation 15058. Up to 566 conditions per place. [2023-08-25 07:53:55,175 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 82 selfloop transitions, 180 changer transitions 47/309 dead transitions. [2023-08-25 07:53:55,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 309 transitions, 6864 flow [2023-08-25 07:53:55,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-25 07:53:55,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-25 07:53:55,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1644 transitions. [2023-08-25 07:53:55,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903133903133903 [2023-08-25 07:53:55,177 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1644 transitions. [2023-08-25 07:53:55,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1644 transitions. [2023-08-25 07:53:55,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:53:55,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1644 transitions. [2023-08-25 07:53:55,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 60.888888888888886) internal successors, (1644), 27 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:55,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 156.0) internal successors, (4368), 28 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:55,183 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 156.0) internal successors, (4368), 28 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:55,183 INFO L175 Difference]: Start difference. First operand has 156 places, 161 transitions, 2715 flow. Second operand 27 states and 1644 transitions. [2023-08-25 07:53:55,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 309 transitions, 6864 flow [2023-08-25 07:53:55,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 309 transitions, 4997 flow, removed 912 selfloop flow, removed 9 redundant places. [2023-08-25 07:53:55,355 INFO L231 Difference]: Finished difference. Result has 186 places, 226 transitions, 3906 flow [2023-08-25 07:53:55,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=2116, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=3906, PETRI_PLACES=186, PETRI_TRANSITIONS=226} [2023-08-25 07:53:55,355 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 162 predicate places. [2023-08-25 07:53:55,355 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 226 transitions, 3906 flow [2023-08-25 07:53:55,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 57.44) internal successors, (1436), 25 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:55,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:53:55,356 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:53:55,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-25 07:53:55,561 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,SelfDestructingSolverStorable12 [2023-08-25 07:53:55,561 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:53:55,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:53:55,561 INFO L85 PathProgramCache]: Analyzing trace with hash -827872136, now seen corresponding path program 9 times [2023-08-25 07:53:55,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:53:55,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633757692] [2023-08-25 07:53:55,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:53:55,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:53:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:53:55,657 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 07:53:55,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:53:55,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633757692] [2023-08-25 07:53:55,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633757692] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:53:55,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14752727] [2023-08-25 07:53:55,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 07:53:55,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:53:55,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:53:55,659 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 07:53:55,697 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 07:53:55,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-25 07:53:55,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:53:55,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-25 07:53:55,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:53:55,762 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 07:53:55,762 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:53:55,852 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 07:53:55,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14752727] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:53:55,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:53:55,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-08-25 07:53:55,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360023289] [2023-08-25 07:53:55,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:53:55,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-25 07:53:55,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:53:55,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-25 07:53:55,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2023-08-25 07:53:55,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:53:55,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 226 transitions, 3906 flow. Second operand has 21 states, 21 states have (on average 57.714285714285715) internal successors, (1212), 21 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:55,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:53:55,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:53:55,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:53:56,817 INFO L124 PetriNetUnfolderBase]: 1472/2711 cut-off events. [2023-08-25 07:53:56,818 INFO L125 PetriNetUnfolderBase]: For 169869/169869 co-relation queries the response was YES. [2023-08-25 07:53:56,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26144 conditions, 2711 events. 1472/2711 cut-off events. For 169869/169869 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 16050 event pairs, 46 based on Foata normal form. 32/2743 useless extension candidates. Maximal degree in co-relation 26063. Up to 1062 conditions per place. [2023-08-25 07:53:56,862 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 91 selfloop transitions, 329 changer transitions 58/478 dead transitions. [2023-08-25 07:53:56,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 478 transitions, 9919 flow [2023-08-25 07:53:56,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-25 07:53:56,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-25 07:53:56,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1955 transitions. [2023-08-25 07:53:56,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3916266025641026 [2023-08-25 07:53:56,865 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1955 transitions. [2023-08-25 07:53:56,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1955 transitions. [2023-08-25 07:53:56,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:53:56,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1955 transitions. [2023-08-25 07:53:56,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 61.09375) internal successors, (1955), 32 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:56,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 156.0) internal successors, (5148), 33 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:56,874 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 156.0) internal successors, (5148), 33 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:56,874 INFO L175 Difference]: Start difference. First operand has 186 places, 226 transitions, 3906 flow. Second operand 32 states and 1955 transitions. [2023-08-25 07:53:56,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 478 transitions, 9919 flow [2023-08-25 07:53:57,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 478 transitions, 8456 flow, removed 681 selfloop flow, removed 9 redundant places. [2023-08-25 07:53:57,180 INFO L231 Difference]: Finished difference. Result has 221 places, 386 transitions, 7472 flow [2023-08-25 07:53:57,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=3362, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=7472, PETRI_PLACES=221, PETRI_TRANSITIONS=386} [2023-08-25 07:53:57,181 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 197 predicate places. [2023-08-25 07:53:57,181 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 386 transitions, 7472 flow [2023-08-25 07:53:57,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 57.714285714285715) internal successors, (1212), 21 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:57,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:53:57,181 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:53:57,186 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 07:53:57,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:53:57,386 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:53:57,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:53:57,387 INFO L85 PathProgramCache]: Analyzing trace with hash 476019586, now seen corresponding path program 10 times [2023-08-25 07:53:57,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:53:57,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603106278] [2023-08-25 07:53:57,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:53:57,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:53:57,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:53:57,693 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:53:57,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:53:57,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603106278] [2023-08-25 07:53:57,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603106278] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:53:57,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355282876] [2023-08-25 07:53:57,695 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 07:53:57,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:53:57,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:53:57,696 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 07:53:57,697 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 07:53:57,831 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 07:53:57,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:53:57,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-25 07:53:57,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:53:57,895 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:53:57,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:53:58,139 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:53:58,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355282876] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:53:58,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:53:58,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2023-08-25 07:53:58,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517591199] [2023-08-25 07:53:58,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:53:58,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-25 07:53:58,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:53:58,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-25 07:53:58,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=851, Unknown=0, NotChecked=0, Total=1056 [2023-08-25 07:53:58,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:53:58,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 386 transitions, 7472 flow. Second operand has 33 states, 33 states have (on average 57.42424242424242) internal successors, (1895), 33 states have internal predecessors, (1895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:58,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:53:58,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:53:58,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:53:59,526 INFO L124 PetriNetUnfolderBase]: 1968/3695 cut-off events. [2023-08-25 07:53:59,527 INFO L125 PetriNetUnfolderBase]: For 317662/317662 co-relation queries the response was YES. [2023-08-25 07:53:59,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39269 conditions, 3695 events. 1968/3695 cut-off events. For 317662/317662 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 23477 event pairs, 187 based on Foata normal form. 64/3759 useless extension candidates. Maximal degree in co-relation 39174. Up to 1514 conditions per place. [2023-08-25 07:53:59,575 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 218 selfloop transitions, 388 changer transitions 79/685 dead transitions. [2023-08-25 07:53:59,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 685 transitions, 15875 flow [2023-08-25 07:53:59,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-08-25 07:53:59,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-08-25 07:53:59,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2558 transitions. [2023-08-25 07:53:59,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3904151404151404 [2023-08-25 07:53:59,580 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2558 transitions. [2023-08-25 07:53:59,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2558 transitions. [2023-08-25 07:53:59,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:53:59,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2558 transitions. [2023-08-25 07:53:59,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 60.904761904761905) internal successors, (2558), 42 states have internal predecessors, (2558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:59,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 156.0) internal successors, (6708), 43 states have internal predecessors, (6708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:59,593 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 156.0) internal successors, (6708), 43 states have internal predecessors, (6708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:53:59,593 INFO L175 Difference]: Start difference. First operand has 221 places, 386 transitions, 7472 flow. Second operand 42 states and 2558 transitions. [2023-08-25 07:53:59,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 685 transitions, 15875 flow [2023-08-25 07:54:00,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 685 transitions, 12481 flow, removed 1667 selfloop flow, removed 8 redundant places. [2023-08-25 07:54:00,587 INFO L231 Difference]: Finished difference. Result has 274 places, 517 transitions, 10384 flow [2023-08-25 07:54:00,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=6172, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=10384, PETRI_PLACES=274, PETRI_TRANSITIONS=517} [2023-08-25 07:54:00,588 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 250 predicate places. [2023-08-25 07:54:00,588 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 517 transitions, 10384 flow [2023-08-25 07:54:00,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 57.42424242424242) internal successors, (1895), 33 states have internal predecessors, (1895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:00,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:54:00,589 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:54:00,598 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 07:54:00,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:54:00,795 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:54:00,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:54:00,795 INFO L85 PathProgramCache]: Analyzing trace with hash 365052096, now seen corresponding path program 11 times [2023-08-25 07:54:00,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:54:00,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750087670] [2023-08-25 07:54:00,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:54:00,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:54:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:54:01,022 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:54:01,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:54:01,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750087670] [2023-08-25 07:54:01,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750087670] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:54:01,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374088652] [2023-08-25 07:54:01,023 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 07:54:01,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:54:01,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:54:01,037 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 07:54:01,054 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 07:54:01,122 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-08-25 07:54:01,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:54:01,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-25 07:54:01,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:54:01,159 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:54:01,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:54:01,370 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:54:01,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374088652] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:54:01,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:54:01,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2023-08-25 07:54:01,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655438193] [2023-08-25 07:54:01,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:54:01,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-25 07:54:01,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:54:01,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-25 07:54:01,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=806, Unknown=0, NotChecked=0, Total=1056 [2023-08-25 07:54:01,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:54:01,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 517 transitions, 10384 flow. Second operand has 33 states, 33 states have (on average 57.39393939393939) internal successors, (1894), 33 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:01,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:54:01,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:54:01,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:54:03,475 INFO L124 PetriNetUnfolderBase]: 2388/4407 cut-off events. [2023-08-25 07:54:03,476 INFO L125 PetriNetUnfolderBase]: For 543686/543686 co-relation queries the response was YES. [2023-08-25 07:54:03,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47292 conditions, 4407 events. 2388/4407 cut-off events. For 543686/543686 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 27579 event pairs, 22 based on Foata normal form. 64/4471 useless extension candidates. Maximal degree in co-relation 47176. Up to 1290 conditions per place. [2023-08-25 07:54:03,530 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 127 selfloop transitions, 584 changer transitions 112/823 dead transitions. [2023-08-25 07:54:03,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 823 transitions, 19347 flow [2023-08-25 07:54:03,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-08-25 07:54:03,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2023-08-25 07:54:03,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 3596 transitions. [2023-08-25 07:54:03,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906996957844415 [2023-08-25 07:54:03,534 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 3596 transitions. [2023-08-25 07:54:03,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 3596 transitions. [2023-08-25 07:54:03,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:54:03,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 3596 transitions. [2023-08-25 07:54:03,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 60.94915254237288) internal successors, (3596), 59 states have internal predecessors, (3596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:03,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 156.0) internal successors, (9360), 60 states have internal predecessors, (9360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:03,545 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 156.0) internal successors, (9360), 60 states have internal predecessors, (9360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:03,545 INFO L175 Difference]: Start difference. First operand has 274 places, 517 transitions, 10384 flow. Second operand 59 states and 3596 transitions. [2023-08-25 07:54:03,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 823 transitions, 19347 flow [2023-08-25 07:54:04,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 823 transitions, 17630 flow, removed 802 selfloop flow, removed 15 redundant places. [2023-08-25 07:54:04,819 INFO L231 Difference]: Finished difference. Result has 352 places, 624 transitions, 14133 flow [2023-08-25 07:54:04,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=8925, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=478, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=14133, PETRI_PLACES=352, PETRI_TRANSITIONS=624} [2023-08-25 07:54:04,820 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 328 predicate places. [2023-08-25 07:54:04,820 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 624 transitions, 14133 flow [2023-08-25 07:54:04,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 57.39393939393939) internal successors, (1894), 33 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:04,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:54:04,820 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:54:04,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-25 07:54:05,025 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,SelfDestructingSolverStorable15 [2023-08-25 07:54:05,026 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:54:05,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:54:05,026 INFO L85 PathProgramCache]: Analyzing trace with hash -7488604, now seen corresponding path program 12 times [2023-08-25 07:54:05,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:54:05,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213467268] [2023-08-25 07:54:05,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:54:05,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:54:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:54:05,537 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:54:05,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:54:05,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213467268] [2023-08-25 07:54:05,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213467268] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:54:05,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31533534] [2023-08-25 07:54:05,537 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 07:54:05,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:54:05,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:54:05,538 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 07:54:05,541 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 07:54:05,642 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-08-25 07:54:05,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:54:05,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-25 07:54:05,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:54:05,711 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:54:05,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:54:06,149 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:54:06,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31533534] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:54:06,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:54:06,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 54 [2023-08-25 07:54:06,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816340716] [2023-08-25 07:54:06,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:54:06,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-08-25 07:54:06,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:54:06,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-08-25 07:54:06,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=737, Invalid=2343, Unknown=0, NotChecked=0, Total=3080 [2023-08-25 07:54:06,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:54:06,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 624 transitions, 14133 flow. Second operand has 56 states, 56 states have (on average 57.19642857142857) internal successors, (3203), 56 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:06,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:54:06,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:54:06,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:54:09,752 INFO L124 PetriNetUnfolderBase]: 2744/5015 cut-off events. [2023-08-25 07:54:09,752 INFO L125 PetriNetUnfolderBase]: For 1155365/1155365 co-relation queries the response was YES. [2023-08-25 07:54:09,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70177 conditions, 5015 events. 2744/5015 cut-off events. For 1155365/1155365 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 29965 event pairs, 10 based on Foata normal form. 60/5075 useless extension candidates. Maximal degree in co-relation 70028. Up to 1518 conditions per place. [2023-08-25 07:54:09,833 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 128 selfloop transitions, 673 changer transitions 158/959 dead transitions. [2023-08-25 07:54:09,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 959 transitions, 28947 flow [2023-08-25 07:54:09,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2023-08-25 07:54:09,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2023-08-25 07:54:09,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 4987 transitions. [2023-08-25 07:54:09,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38985303314571607 [2023-08-25 07:54:09,838 INFO L72 ComplementDD]: Start complementDD. Operand 82 states and 4987 transitions. [2023-08-25 07:54:09,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 82 states and 4987 transitions. [2023-08-25 07:54:09,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:54:09,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 82 states and 4987 transitions. [2023-08-25 07:54:09,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 83 states, 82 states have (on average 60.81707317073171) internal successors, (4987), 82 states have internal predecessors, (4987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:09,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 83 states, 83 states have (on average 156.0) internal successors, (12948), 83 states have internal predecessors, (12948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:09,856 INFO L81 ComplementDD]: Finished complementDD. Result has 83 states, 83 states have (on average 156.0) internal successors, (12948), 83 states have internal predecessors, (12948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:09,856 INFO L175 Difference]: Start difference. First operand has 352 places, 624 transitions, 14133 flow. Second operand 82 states and 4987 transitions. [2023-08-25 07:54:09,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 959 transitions, 28947 flow [2023-08-25 07:54:12,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 959 transitions, 24438 flow, removed 2147 selfloop flow, removed 17 redundant places. [2023-08-25 07:54:12,564 INFO L231 Difference]: Finished difference. Result has 446 places, 713 transitions, 16491 flow [2023-08-25 07:54:12,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=11242, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=585, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=82, PETRI_FLOW=16491, PETRI_PLACES=446, PETRI_TRANSITIONS=713} [2023-08-25 07:54:12,565 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 422 predicate places. [2023-08-25 07:54:12,565 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 713 transitions, 16491 flow [2023-08-25 07:54:12,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 57.19642857142857) internal successors, (3203), 56 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:12,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:54:12,566 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:54:12,581 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 07:54:12,772 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,SelfDestructingSolverStorable16 [2023-08-25 07:54:12,773 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:54:12,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:54:12,773 INFO L85 PathProgramCache]: Analyzing trace with hash -403609550, now seen corresponding path program 13 times [2023-08-25 07:54:12,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:54:12,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110482542] [2023-08-25 07:54:12,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:54:12,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:54:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:54:13,720 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:54:13,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:54:13,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110482542] [2023-08-25 07:54:13,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110482542] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:54:13,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159318597] [2023-08-25 07:54:13,721 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 07:54:13,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:54:13,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:54:13,722 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 07:54:13,724 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 07:54:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:54:13,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-25 07:54:13,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:54:13,984 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:54:13,984 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:54:14,715 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:54:14,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159318597] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:54:14,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:54:14,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 46 [2023-08-25 07:54:14,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187730193] [2023-08-25 07:54:14,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:54:14,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-08-25 07:54:14,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:54:14,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-08-25 07:54:14,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=560, Invalid=1696, Unknown=0, NotChecked=0, Total=2256 [2023-08-25 07:54:14,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:54:14,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 713 transitions, 16491 flow. Second operand has 48 states, 48 states have (on average 57.229166666666664) internal successors, (2747), 48 states have internal predecessors, (2747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:14,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:54:14,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:54:14,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:54:17,391 INFO L124 PetriNetUnfolderBase]: 2880/5287 cut-off events. [2023-08-25 07:54:17,392 INFO L125 PetriNetUnfolderBase]: For 1829546/1829546 co-relation queries the response was YES. [2023-08-25 07:54:17,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84254 conditions, 5287 events. 2880/5287 cut-off events. For 1829546/1829546 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 32065 event pairs, 1141 based on Foata normal form. 24/5311 useless extension candidates. Maximal degree in co-relation 84076. Up to 4761 conditions per place. [2023-08-25 07:54:17,478 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 739 selfloop transitions, 65 changer transitions 91/895 dead transitions. [2023-08-25 07:54:17,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 895 transitions, 25827 flow [2023-08-25 07:54:17,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-25 07:54:17,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-25 07:54:17,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 2897 transitions. [2023-08-25 07:54:17,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3868856837606838 [2023-08-25 07:54:17,481 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 2897 transitions. [2023-08-25 07:54:17,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 2897 transitions. [2023-08-25 07:54:17,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:54:17,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 2897 transitions. [2023-08-25 07:54:17,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 60.354166666666664) internal successors, (2897), 48 states have internal predecessors, (2897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:17,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 156.0) internal successors, (7644), 49 states have internal predecessors, (7644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:17,490 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 156.0) internal successors, (7644), 49 states have internal predecessors, (7644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:17,490 INFO L175 Difference]: Start difference. First operand has 446 places, 713 transitions, 16491 flow. Second operand 48 states and 2897 transitions. [2023-08-25 07:54:17,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 895 transitions, 25827 flow [2023-08-25 07:54:22,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 895 transitions, 21290 flow, removed 2136 selfloop flow, removed 15 redundant places. [2023-08-25 07:54:22,529 INFO L231 Difference]: Finished difference. Result has 510 places, 747 transitions, 14499 flow [2023-08-25 07:54:22,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=13054, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=713, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=652, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=14499, PETRI_PLACES=510, PETRI_TRANSITIONS=747} [2023-08-25 07:54:22,529 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 486 predicate places. [2023-08-25 07:54:22,529 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 747 transitions, 14499 flow [2023-08-25 07:54:22,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 57.229166666666664) internal successors, (2747), 48 states have internal predecessors, (2747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:22,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:54:22,530 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:54:22,535 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 07:54:22,734 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,SelfDestructingSolverStorable17 [2023-08-25 07:54:22,735 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:54:22,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:54:22,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1424392554, now seen corresponding path program 14 times [2023-08-25 07:54:22,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:54:22,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497199978] [2023-08-25 07:54:22,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:54:22,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:54:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:54:23,705 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:54:23,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:54:23,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497199978] [2023-08-25 07:54:23,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497199978] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:54:23,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724778479] [2023-08-25 07:54:23,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 07:54:23,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:54:23,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:54:23,725 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 07:54:23,727 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 07:54:23,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 07:54:23,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:54:23,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-25 07:54:23,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:54:23,959 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:54:23,959 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:54:24,801 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:54:24,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724778479] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:54:24,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:54:24,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 48 [2023-08-25 07:54:24,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585723992] [2023-08-25 07:54:24,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:54:24,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-08-25 07:54:24,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:54:24,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-08-25 07:54:24,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=546, Invalid=1904, Unknown=0, NotChecked=0, Total=2450 [2023-08-25 07:54:24,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:54:24,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 747 transitions, 14499 flow. Second operand has 50 states, 50 states have (on average 57.24) internal successors, (2862), 50 states have internal predecessors, (2862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:24,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:54:24,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:54:24,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:54:28,097 INFO L124 PetriNetUnfolderBase]: 3112/5751 cut-off events. [2023-08-25 07:54:28,098 INFO L125 PetriNetUnfolderBase]: For 2247320/2247320 co-relation queries the response was YES. [2023-08-25 07:54:28,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91615 conditions, 5751 events. 3112/5751 cut-off events. For 2247320/2247320 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 34702 event pairs, 850 based on Foata normal form. 24/5775 useless extension candidates. Maximal degree in co-relation 91404. Up to 3547 conditions per place. [2023-08-25 07:54:28,268 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 612 selfloop transitions, 278 changer transitions 103/993 dead transitions. [2023-08-25 07:54:28,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 993 transitions, 24196 flow [2023-08-25 07:54:28,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-08-25 07:54:28,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2023-08-25 07:54:28,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 3264 transitions. [2023-08-25 07:54:28,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38746438746438744 [2023-08-25 07:54:28,274 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 3264 transitions. [2023-08-25 07:54:28,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 3264 transitions. [2023-08-25 07:54:28,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:54:28,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 3264 transitions. [2023-08-25 07:54:28,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 60.44444444444444) internal successors, (3264), 54 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:28,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 156.0) internal successors, (8580), 55 states have internal predecessors, (8580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:28,286 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 156.0) internal successors, (8580), 55 states have internal predecessors, (8580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:28,286 INFO L175 Difference]: Start difference. First operand has 510 places, 747 transitions, 14499 flow. Second operand 54 states and 3264 transitions. [2023-08-25 07:54:28,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 993 transitions, 24196 flow [2023-08-25 07:54:34,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 548 places, 993 transitions, 23367 flow, removed 384 selfloop flow, removed 15 redundant places. [2023-08-25 07:54:34,611 INFO L231 Difference]: Finished difference. Result has 558 places, 805 transitions, 15855 flow [2023-08-25 07:54:34,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=13670, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=15855, PETRI_PLACES=558, PETRI_TRANSITIONS=805} [2023-08-25 07:54:34,611 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 534 predicate places. [2023-08-25 07:54:34,611 INFO L495 AbstractCegarLoop]: Abstraction has has 558 places, 805 transitions, 15855 flow [2023-08-25 07:54:34,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 57.24) internal successors, (2862), 50 states have internal predecessors, (2862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:34,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:54:34,612 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:54:34,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-25 07:54:34,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:54:34,817 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:54:34,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:54:34,817 INFO L85 PathProgramCache]: Analyzing trace with hash -54601882, now seen corresponding path program 15 times [2023-08-25 07:54:34,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:54:34,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530655055] [2023-08-25 07:54:34,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:54:34,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:54:34,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:54:35,565 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:54:35,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:54:35,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530655055] [2023-08-25 07:54:35,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530655055] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:54:35,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378775902] [2023-08-25 07:54:35,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 07:54:35,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:54:35,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:54:35,566 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 07:54:35,568 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 07:54:35,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2023-08-25 07:54:35,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:54:35,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-25 07:54:35,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:54:35,767 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:54:35,767 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:54:36,530 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:54:36,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378775902] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:54:36,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:54:36,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 49 [2023-08-25 07:54:36,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771418370] [2023-08-25 07:54:36,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:54:36,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-08-25 07:54:36,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:54:36,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-08-25 07:54:36,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=504, Invalid=2046, Unknown=0, NotChecked=0, Total=2550 [2023-08-25 07:54:36,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:54:36,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 805 transitions, 15855 flow. Second operand has 51 states, 51 states have (on average 57.23529411764706) internal successors, (2919), 51 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:36,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:54:36,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:54:36,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:54:40,492 INFO L124 PetriNetUnfolderBase]: 3600/6727 cut-off events. [2023-08-25 07:54:40,492 INFO L125 PetriNetUnfolderBase]: For 2917099/2917099 co-relation queries the response was YES. [2023-08-25 07:54:40,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112993 conditions, 6727 events. 3600/6727 cut-off events. For 2917099/2917099 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 41840 event pairs, 360 based on Foata normal form. 24/6751 useless extension candidates. Maximal degree in co-relation 112772. Up to 2262 conditions per place. [2023-08-25 07:54:40,601 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 370 selfloop transitions, 644 changer transitions 111/1125 dead transitions. [2023-08-25 07:54:40,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 1125 transitions, 28224 flow [2023-08-25 07:54:40,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-08-25 07:54:40,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2023-08-25 07:54:40,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 3508 transitions. [2023-08-25 07:54:40,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38770999115826704 [2023-08-25 07:54:40,604 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 3508 transitions. [2023-08-25 07:54:40,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 3508 transitions. [2023-08-25 07:54:40,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:54:40,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 3508 transitions. [2023-08-25 07:54:40,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 60.48275862068966) internal successors, (3508), 58 states have internal predecessors, (3508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:40,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 156.0) internal successors, (9204), 59 states have internal predecessors, (9204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:40,612 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 156.0) internal successors, (9204), 59 states have internal predecessors, (9204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:40,612 INFO L175 Difference]: Start difference. First operand has 558 places, 805 transitions, 15855 flow. Second operand 58 states and 3508 transitions. [2023-08-25 07:54:40,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 1125 transitions, 28224 flow [2023-08-25 07:54:49,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 1125 transitions, 26677 flow, removed 742 selfloop flow, removed 12 redundant places. [2023-08-25 07:54:50,007 INFO L231 Difference]: Finished difference. Result has 633 places, 931 transitions, 19958 flow [2023-08-25 07:54:50,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=14868, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=805, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=528, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=19958, PETRI_PLACES=633, PETRI_TRANSITIONS=931} [2023-08-25 07:54:50,008 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 609 predicate places. [2023-08-25 07:54:50,008 INFO L495 AbstractCegarLoop]: Abstraction has has 633 places, 931 transitions, 19958 flow [2023-08-25 07:54:50,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 57.23529411764706) internal successors, (2919), 51 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:50,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:54:50,009 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:54:50,014 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 07:54:50,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:54:50,212 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:54:50,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:54:50,229 INFO L85 PathProgramCache]: Analyzing trace with hash 825408254, now seen corresponding path program 16 times [2023-08-25 07:54:50,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:54:50,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268196955] [2023-08-25 07:54:50,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:54:50,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:54:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:54:51,094 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:54:51,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:54:51,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268196955] [2023-08-25 07:54:51,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268196955] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:54:51,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910211279] [2023-08-25 07:54:51,094 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 07:54:51,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:54:51,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:54:51,109 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 07:54:51,112 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 07:54:51,215 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 07:54:51,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:54:51,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-25 07:54:51,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:54:51,325 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:54:51,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:54:52,026 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:54:52,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910211279] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:54:52,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:54:52,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 51 [2023-08-25 07:54:52,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505682160] [2023-08-25 07:54:52,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:54:52,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-08-25 07:54:52,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:54:52,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-08-25 07:54:52,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=2312, Unknown=0, NotChecked=0, Total=2756 [2023-08-25 07:54:52,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:54:52,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 931 transitions, 19958 flow. Second operand has 53 states, 53 states have (on average 57.24528301886792) internal successors, (3034), 53 states have internal predecessors, (3034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:52,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:54:52,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:54:52,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:54:56,946 INFO L124 PetriNetUnfolderBase]: 3864/7255 cut-off events. [2023-08-25 07:54:56,947 INFO L125 PetriNetUnfolderBase]: For 3503530/3503530 co-relation queries the response was YES. [2023-08-25 07:54:57,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129388 conditions, 7255 events. 3864/7255 cut-off events. For 3503530/3503530 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 45670 event pairs, 202 based on Foata normal form. 24/7279 useless extension candidates. Maximal degree in co-relation 129136. Up to 2514 conditions per place. [2023-08-25 07:54:57,076 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 271 selfloop transitions, 817 changer transitions 121/1209 dead transitions. [2023-08-25 07:54:57,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 695 places, 1209 transitions, 32011 flow [2023-08-25 07:54:57,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-08-25 07:54:57,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2023-08-25 07:54:57,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 3813 transitions. [2023-08-25 07:54:57,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.387973137973138 [2023-08-25 07:54:57,081 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 3813 transitions. [2023-08-25 07:54:57,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 3813 transitions. [2023-08-25 07:54:57,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:54:57,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 3813 transitions. [2023-08-25 07:54:57,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 60.523809523809526) internal successors, (3813), 63 states have internal predecessors, (3813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:57,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 156.0) internal successors, (9984), 64 states have internal predecessors, (9984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:57,089 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 156.0) internal successors, (9984), 64 states have internal predecessors, (9984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:57,089 INFO L175 Difference]: Start difference. First operand has 633 places, 931 transitions, 19958 flow. Second operand 63 states and 3813 transitions. [2023-08-25 07:54:57,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 695 places, 1209 transitions, 32011 flow [2023-08-25 07:55:07,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 676 places, 1209 transitions, 30346 flow, removed 641 selfloop flow, removed 19 redundant places. [2023-08-25 07:55:07,223 INFO L231 Difference]: Finished difference. Result has 701 places, 998 transitions, 22801 flow [2023-08-25 07:55:07,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=18653, PETRI_DIFFERENCE_MINUEND_PLACES=614, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=931, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=760, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=22801, PETRI_PLACES=701, PETRI_TRANSITIONS=998} [2023-08-25 07:55:07,224 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 677 predicate places. [2023-08-25 07:55:07,224 INFO L495 AbstractCegarLoop]: Abstraction has has 701 places, 998 transitions, 22801 flow [2023-08-25 07:55:07,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 57.24528301886792) internal successors, (3034), 53 states have internal predecessors, (3034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:55:07,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:55:07,225 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:55:07,236 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 07:55:07,430 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,SelfDestructingSolverStorable20 [2023-08-25 07:55:07,430 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:55:07,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:55:07,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1018123480, now seen corresponding path program 17 times [2023-08-25 07:55:07,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:55:07,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704611523] [2023-08-25 07:55:07,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:55:07,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:55:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:55:08,199 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:55:08,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:55:08,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704611523] [2023-08-25 07:55:08,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704611523] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:55:08,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925657361] [2023-08-25 07:55:08,199 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 07:55:08,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:55:08,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:55:08,200 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 07:55:08,202 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 07:55:08,299 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2023-08-25 07:55:08,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:55:08,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-25 07:55:08,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:55:08,386 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:55:08,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:55:09,076 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:55:09,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925657361] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:55:09,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:55:09,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 49 [2023-08-25 07:55:09,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327154374] [2023-08-25 07:55:09,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:55:09,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-08-25 07:55:09,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:55:09,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-08-25 07:55:09,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=2151, Unknown=0, NotChecked=0, Total=2550 [2023-08-25 07:55:09,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:55:09,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 701 places, 998 transitions, 22801 flow. Second operand has 51 states, 51 states have (on average 57.23529411764706) internal successors, (2919), 51 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:55:09,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:55:09,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:55:09,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:55:14,830 INFO L124 PetriNetUnfolderBase]: 4064/7655 cut-off events. [2023-08-25 07:55:14,830 INFO L125 PetriNetUnfolderBase]: For 3840462/3840462 co-relation queries the response was YES. [2023-08-25 07:55:15,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140895 conditions, 7655 events. 4064/7655 cut-off events. For 3840462/3840462 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 48420 event pairs, 150 based on Foata normal form. 24/7679 useless extension candidates. Maximal degree in co-relation 140617. Up to 2714 conditions per place. [2023-08-25 07:55:15,051 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 234 selfloop transitions, 909 changer transitions 131/1274 dead transitions. [2023-08-25 07:55:15,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 768 places, 1274 transitions, 35491 flow [2023-08-25 07:55:15,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-08-25 07:55:15,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2023-08-25 07:55:15,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 4118 transitions. [2023-08-25 07:55:15,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3881975867269985 [2023-08-25 07:55:15,057 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 4118 transitions. [2023-08-25 07:55:15,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 4118 transitions. [2023-08-25 07:55:15,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:55:15,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 4118 transitions. [2023-08-25 07:55:15,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 60.55882352941177) internal successors, (4118), 68 states have internal predecessors, (4118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:55:15,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 156.0) internal successors, (10764), 69 states have internal predecessors, (10764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:55:15,071 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 156.0) internal successors, (10764), 69 states have internal predecessors, (10764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:55:15,072 INFO L175 Difference]: Start difference. First operand has 701 places, 998 transitions, 22801 flow. Second operand 68 states and 4118 transitions. [2023-08-25 07:55:15,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 768 places, 1274 transitions, 35491 flow [2023-08-25 07:55:27,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 740 places, 1274 transitions, 33403 flow, removed 598 selfloop flow, removed 28 redundant places. [2023-08-25 07:55:27,869 INFO L231 Difference]: Finished difference. Result has 760 places, 1049 transitions, 24676 flow [2023-08-25 07:55:27,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=20801, PETRI_DIFFERENCE_MINUEND_PLACES=673, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=998, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=868, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=24676, PETRI_PLACES=760, PETRI_TRANSITIONS=1049} [2023-08-25 07:55:27,869 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 736 predicate places. [2023-08-25 07:55:27,869 INFO L495 AbstractCegarLoop]: Abstraction has has 760 places, 1049 transitions, 24676 flow [2023-08-25 07:55:27,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 57.23529411764706) internal successors, (2919), 51 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:55:27,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:55:27,870 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:55:27,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-08-25 07:55:28,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:55:28,072 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:55:28,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:55:28,072 INFO L85 PathProgramCache]: Analyzing trace with hash -469259072, now seen corresponding path program 18 times [2023-08-25 07:55:28,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:55:28,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022264247] [2023-08-25 07:55:28,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:55:28,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:55:28,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:55:28,724 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:55:28,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:55:28,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022264247] [2023-08-25 07:55:28,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022264247] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:55:28,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717752539] [2023-08-25 07:55:28,724 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 07:55:28,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:55:28,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:55:28,725 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 07:55:28,727 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 07:55:28,852 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2023-08-25 07:55:28,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:55:28,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-25 07:55:28,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:55:28,950 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:55:28,950 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:55:29,489 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:55:29,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717752539] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:55:29,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:55:29,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 51 [2023-08-25 07:55:29,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349939190] [2023-08-25 07:55:29,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:55:29,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-08-25 07:55:29,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:55:29,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-08-25 07:55:29,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=2372, Unknown=0, NotChecked=0, Total=2756 [2023-08-25 07:55:29,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:55:29,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 760 places, 1049 transitions, 24676 flow. Second operand has 53 states, 53 states have (on average 57.24528301886792) internal successors, (3034), 53 states have internal predecessors, (3034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:55:29,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:55:29,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:55:29,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:55:35,900 INFO L124 PetriNetUnfolderBase]: 4224/7975 cut-off events. [2023-08-25 07:55:35,900 INFO L125 PetriNetUnfolderBase]: For 4379151/4379151 co-relation queries the response was YES. [2023-08-25 07:55:36,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153155 conditions, 7975 events. 4224/7975 cut-off events. For 4379151/4379151 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 50578 event pairs, 114 based on Foata normal form. 24/7999 useless extension candidates. Maximal degree in co-relation 152856. Up to 2858 conditions per place. [2023-08-25 07:55:36,081 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 210 selfloop transitions, 979 changer transitions 141/1330 dead transitions. [2023-08-25 07:55:36,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 832 places, 1330 transitions, 38579 flow [2023-08-25 07:55:36,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-08-25 07:55:36,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2023-08-25 07:55:36,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 4423 transitions. [2023-08-25 07:55:36,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38839128907622056 [2023-08-25 07:55:36,085 INFO L72 ComplementDD]: Start complementDD. Operand 73 states and 4423 transitions. [2023-08-25 07:55:36,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 73 states and 4423 transitions. [2023-08-25 07:55:36,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:55:36,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 73 states and 4423 transitions. [2023-08-25 07:55:36,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 74 states, 73 states have (on average 60.58904109589041) internal successors, (4423), 73 states have internal predecessors, (4423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:55:36,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 74 states, 74 states have (on average 156.0) internal successors, (11544), 74 states have internal predecessors, (11544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:55:36,097 INFO L81 ComplementDD]: Finished complementDD. Result has 74 states, 74 states have (on average 156.0) internal successors, (11544), 74 states have internal predecessors, (11544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:55:36,097 INFO L175 Difference]: Start difference. First operand has 760 places, 1049 transitions, 24676 flow. Second operand 73 states and 4423 transitions. [2023-08-25 07:55:36,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 832 places, 1330 transitions, 38579 flow [2023-08-25 07:55:50,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 792 places, 1330 transitions, 35727 flow, removed 767 selfloop flow, removed 40 redundant places. [2023-08-25 07:55:50,227 INFO L231 Difference]: Finished difference. Result has 807 places, 1090 transitions, 26118 flow [2023-08-25 07:55:50,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=22270, PETRI_DIFFERENCE_MINUEND_PLACES=720, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1049, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=948, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=73, PETRI_FLOW=26118, PETRI_PLACES=807, PETRI_TRANSITIONS=1090} [2023-08-25 07:55:50,229 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 783 predicate places. [2023-08-25 07:55:50,229 INFO L495 AbstractCegarLoop]: Abstraction has has 807 places, 1090 transitions, 26118 flow [2023-08-25 07:55:50,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 57.24528301886792) internal successors, (3034), 53 states have internal predecessors, (3034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:55:50,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:55:50,229 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:55:50,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-25 07:55:50,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:55:50,434 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:55:50,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:55:50,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1802376242, now seen corresponding path program 19 times [2023-08-25 07:55:50,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:55:50,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311155476] [2023-08-25 07:55:50,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:55:50,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:55:50,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:55:51,078 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:55:51,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:55:51,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311155476] [2023-08-25 07:55:51,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311155476] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:55:51,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106555575] [2023-08-25 07:55:51,078 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 07:55:51,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:55:51,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:55:51,079 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 07:55:51,081 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 07:55:51,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:55:51,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-25 07:55:51,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:55:51,296 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:55:51,296 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:55:52,067 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:55:52,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106555575] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:55:52,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:55:52,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 51 [2023-08-25 07:55:52,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863916931] [2023-08-25 07:55:52,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:55:52,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-08-25 07:55:52,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:55:52,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-08-25 07:55:52,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=2360, Unknown=0, NotChecked=0, Total=2756 [2023-08-25 07:55:52,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:55:52,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 807 places, 1090 transitions, 26118 flow. Second operand has 53 states, 53 states have (on average 57.24528301886792) internal successors, (3034), 53 states have internal predecessors, (3034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:55:52,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:55:52,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:55:52,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:55:59,640 INFO L124 PetriNetUnfolderBase]: 4372/8259 cut-off events. [2023-08-25 07:55:59,640 INFO L125 PetriNetUnfolderBase]: For 4657156/4657156 co-relation queries the response was YES. [2023-08-25 07:55:59,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161084 conditions, 8259 events. 4372/8259 cut-off events. For 4657156/4657156 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 52532 event pairs, 70 based on Foata normal form. 24/8283 useless extension candidates. Maximal degree in co-relation 160769. Up to 2986 conditions per place. [2023-08-25 07:55:59,819 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 188 selfloop transitions, 1045 changer transitions 153/1386 dead transitions. [2023-08-25 07:55:59,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 885 places, 1386 transitions, 41080 flow [2023-08-25 07:55:59,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-08-25 07:55:59,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2023-08-25 07:55:59,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 4789 transitions. [2023-08-25 07:55:59,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3885913664394677 [2023-08-25 07:55:59,823 INFO L72 ComplementDD]: Start complementDD. Operand 79 states and 4789 transitions. [2023-08-25 07:55:59,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 4789 transitions. [2023-08-25 07:55:59,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:55:59,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 79 states and 4789 transitions. [2023-08-25 07:55:59,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 80 states, 79 states have (on average 60.620253164556964) internal successors, (4789), 79 states have internal predecessors, (4789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:55:59,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 80 states, 80 states have (on average 156.0) internal successors, (12480), 80 states have internal predecessors, (12480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:55:59,833 INFO L81 ComplementDD]: Finished complementDD. Result has 80 states, 80 states have (on average 156.0) internal successors, (12480), 80 states have internal predecessors, (12480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:55:59,833 INFO L175 Difference]: Start difference. First operand has 807 places, 1090 transitions, 26118 flow. Second operand 79 states and 4789 transitions. [2023-08-25 07:55:59,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 885 places, 1386 transitions, 41080 flow [2023-08-25 07:56:17,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 834 places, 1386 transitions, 37917 flow, removed 789 selfloop flow, removed 51 redundant places. [2023-08-25 07:56:17,873 INFO L231 Difference]: Finished difference. Result has 845 places, 1128 transitions, 27185 flow [2023-08-25 07:56:17,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=23419, PETRI_DIFFERENCE_MINUEND_PLACES=756, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1090, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1018, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=27185, PETRI_PLACES=845, PETRI_TRANSITIONS=1128} [2023-08-25 07:56:17,874 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 821 predicate places. [2023-08-25 07:56:17,874 INFO L495 AbstractCegarLoop]: Abstraction has has 845 places, 1128 transitions, 27185 flow [2023-08-25 07:56:17,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 57.24528301886792) internal successors, (3034), 53 states have internal predecessors, (3034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:56:17,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:56:17,875 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:56:17,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-08-25 07:56:18,079 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,SelfDestructingSolverStorable23 [2023-08-25 07:56:18,079 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:56:18,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:56:18,080 INFO L85 PathProgramCache]: Analyzing trace with hash 222563676, now seen corresponding path program 20 times [2023-08-25 07:56:18,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:56:18,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998664941] [2023-08-25 07:56:18,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:56:18,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:56:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:56:18,707 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:56:18,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:56:18,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998664941] [2023-08-25 07:56:18,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998664941] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:56:18,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375804720] [2023-08-25 07:56:18,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 07:56:18,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:56:18,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:56:18,709 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 07:56:18,710 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 07:56:18,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 07:56:18,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:56:18,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-25 07:56:18,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:56:18,888 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:56:18,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:56:19,431 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:56:19,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375804720] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:56:19,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:56:19,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 51 [2023-08-25 07:56:19,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723614024] [2023-08-25 07:56:19,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:56:19,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-08-25 07:56:19,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:56:19,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-08-25 07:56:19,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=2312, Unknown=0, NotChecked=0, Total=2756 [2023-08-25 07:56:19,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:56:19,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 845 places, 1128 transitions, 27185 flow. Second operand has 53 states, 53 states have (on average 57.24528301886792) internal successors, (3034), 53 states have internal predecessors, (3034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:56:19,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:56:19,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:56:19,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:56:27,015 INFO L124 PetriNetUnfolderBase]: 4508/8507 cut-off events. [2023-08-25 07:56:27,015 INFO L125 PetriNetUnfolderBase]: For 4895517/4895517 co-relation queries the response was YES. [2023-08-25 07:56:27,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167659 conditions, 8507 events. 4508/8507 cut-off events. For 4895517/4895517 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 54300 event pairs, 46 based on Foata normal form. 24/8531 useless extension candidates. Maximal degree in co-relation 167332. Up to 3090 conditions per place. [2023-08-25 07:56:27,213 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 177 selfloop transitions, 1097 changer transitions 165/1439 dead transitions. [2023-08-25 07:56:27,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 929 places, 1439 transitions, 43237 flow [2023-08-25 07:56:27,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-08-25 07:56:27,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2023-08-25 07:56:27,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 5155 transitions. [2023-08-25 07:56:27,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.388763197586727 [2023-08-25 07:56:27,220 INFO L72 ComplementDD]: Start complementDD. Operand 85 states and 5155 transitions. [2023-08-25 07:56:27,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 85 states and 5155 transitions. [2023-08-25 07:56:27,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:56:27,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 85 states and 5155 transitions. [2023-08-25 07:56:27,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 86 states, 85 states have (on average 60.64705882352941) internal successors, (5155), 85 states have internal predecessors, (5155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:56:27,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 86 states, 86 states have (on average 156.0) internal successors, (13416), 86 states have internal predecessors, (13416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:56:27,250 INFO L81 ComplementDD]: Finished complementDD. Result has 86 states, 86 states have (on average 156.0) internal successors, (13416), 86 states have internal predecessors, (13416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:56:27,250 INFO L175 Difference]: Start difference. First operand has 845 places, 1128 transitions, 27185 flow. Second operand 85 states and 5155 transitions. [2023-08-25 07:56:27,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 929 places, 1439 transitions, 43237 flow [2023-08-25 07:56:41,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 874 places, 1439 transitions, 40053 flow, removed 804 selfloop flow, removed 55 redundant places. [2023-08-25 07:56:41,795 INFO L231 Difference]: Finished difference. Result has 885 places, 1163 transitions, 28288 flow [2023-08-25 07:56:41,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=24483, PETRI_DIFFERENCE_MINUEND_PLACES=790, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1068, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=85, PETRI_FLOW=28288, PETRI_PLACES=885, PETRI_TRANSITIONS=1163} [2023-08-25 07:56:41,796 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 861 predicate places. [2023-08-25 07:56:41,796 INFO L495 AbstractCegarLoop]: Abstraction has has 885 places, 1163 transitions, 28288 flow [2023-08-25 07:56:41,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 57.24528301886792) internal successors, (3034), 53 states have internal predecessors, (3034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:56:41,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:56:41,797 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:56:41,817 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 07:56:42,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:56:42,002 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:56:42,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:56:42,003 INFO L85 PathProgramCache]: Analyzing trace with hash -144410362, now seen corresponding path program 21 times [2023-08-25 07:56:42,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:56:42,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93422983] [2023-08-25 07:56:42,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:56:42,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:56:42,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:56:42,669 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:56:42,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:56:42,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93422983] [2023-08-25 07:56:42,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93422983] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:56:42,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319057780] [2023-08-25 07:56:42,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 07:56:42,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:56:42,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:56:42,671 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 07:56:42,673 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 07:56:42,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2023-08-25 07:56:42,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:56:42,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-25 07:56:42,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:56:42,843 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:56:42,843 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:56:43,413 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:56:43,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319057780] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:56:43,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:56:43,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 49 [2023-08-25 07:56:43,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728463003] [2023-08-25 07:56:43,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:56:43,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-08-25 07:56:43,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:56:43,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-08-25 07:56:43,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=520, Invalid=2030, Unknown=0, NotChecked=0, Total=2550 [2023-08-25 07:56:43,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:56:43,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 885 places, 1163 transitions, 28288 flow. Second operand has 51 states, 51 states have (on average 57.21568627450981) internal successors, (2918), 51 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:56:43,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:56:43,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:56:43,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:56:50,544 INFO L124 PetriNetUnfolderBase]: 4616/8699 cut-off events. [2023-08-25 07:56:50,544 INFO L125 PetriNetUnfolderBase]: For 5132753/5132753 co-relation queries the response was YES. [2023-08-25 07:56:50,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174886 conditions, 8699 events. 4616/8699 cut-off events. For 5132753/5132753 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 55360 event pairs, 28 based on Foata normal form. 24/8723 useless extension candidates. Maximal degree in co-relation 174547. Up to 3166 conditions per place. [2023-08-25 07:56:50,745 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 181 selfloop transitions, 1133 changer transitions 163/1477 dead transitions. [2023-08-25 07:56:50,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 974 places, 1477 transitions, 45995 flow [2023-08-25 07:56:50,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2023-08-25 07:56:50,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2023-08-25 07:56:50,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 5461 transitions. [2023-08-25 07:56:50,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.388960113960114 [2023-08-25 07:56:50,749 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 5461 transitions. [2023-08-25 07:56:50,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 5461 transitions. [2023-08-25 07:56:50,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:56:50,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 5461 transitions. [2023-08-25 07:56:50,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 60.67777777777778) internal successors, (5461), 90 states have internal predecessors, (5461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:56:50,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 156.0) internal successors, (14196), 91 states have internal predecessors, (14196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:56:50,760 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 156.0) internal successors, (14196), 91 states have internal predecessors, (14196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:56:50,760 INFO L175 Difference]: Start difference. First operand has 885 places, 1163 transitions, 28288 flow. Second operand 90 states and 5461 transitions. [2023-08-25 07:56:50,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 974 places, 1477 transitions, 45995 flow [2023-08-25 07:57:06,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 909 places, 1477 transitions, 42731 flow, removed 813 selfloop flow, removed 65 redundant places. [2023-08-25 07:57:06,446 INFO L231 Difference]: Finished difference. Result has 920 places, 1185 transitions, 29908 flow [2023-08-25 07:57:06,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=25548, PETRI_DIFFERENCE_MINUEND_PLACES=820, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=29908, PETRI_PLACES=920, PETRI_TRANSITIONS=1185} [2023-08-25 07:57:06,447 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 896 predicate places. [2023-08-25 07:57:06,447 INFO L495 AbstractCegarLoop]: Abstraction has has 920 places, 1185 transitions, 29908 flow [2023-08-25 07:57:06,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 57.21568627450981) internal successors, (2918), 51 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:57:06,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:57:06,448 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:57:06,453 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 07:57:06,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:57:06,654 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:57:06,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:57:06,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1316440288, now seen corresponding path program 22 times [2023-08-25 07:57:06,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:57:06,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962963988] [2023-08-25 07:57:06,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:57:06,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:57:06,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:57:07,352 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:57:07,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:57:07,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962963988] [2023-08-25 07:57:07,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962963988] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:57:07,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023984079] [2023-08-25 07:57:07,353 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 07:57:07,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:57:07,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:57:07,355 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 07:57:07,357 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 07:57:07,453 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 07:57:07,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:57:07,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-25 07:57:07,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:57:07,503 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:57:07,503 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:57:07,987 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:57:07,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023984079] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:57:07,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:57:07,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 42 [2023-08-25 07:57:07,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451078620] [2023-08-25 07:57:07,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:57:07,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-08-25 07:57:07,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:57:07,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-08-25 07:57:07,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=466, Invalid=1426, Unknown=0, NotChecked=0, Total=1892 [2023-08-25 07:57:08,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:57:08,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 920 places, 1185 transitions, 29908 flow. Second operand has 44 states, 44 states have (on average 57.09090909090909) internal successors, (2512), 44 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:57:08,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:57:08,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:57:08,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:57:15,100 INFO L124 PetriNetUnfolderBase]: 4716/8891 cut-off events. [2023-08-25 07:57:15,101 INFO L125 PetriNetUnfolderBase]: For 5542193/5542193 co-relation queries the response was YES. [2023-08-25 07:57:15,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185123 conditions, 8891 events. 4716/8891 cut-off events. For 5542193/5542193 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 56667 event pairs, 107 based on Foata normal form. 8/8899 useless extension candidates. Maximal degree in co-relation 184776. Up to 3250 conditions per place. [2023-08-25 07:57:15,360 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 197 selfloop transitions, 1111 changer transitions 155/1463 dead transitions. [2023-08-25 07:57:15,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1003 places, 1463 transitions, 47205 flow [2023-08-25 07:57:15,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-08-25 07:57:15,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2023-08-25 07:57:15,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 5091 transitions. [2023-08-25 07:57:15,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.388507326007326 [2023-08-25 07:57:15,364 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 5091 transitions. [2023-08-25 07:57:15,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 5091 transitions. [2023-08-25 07:57:15,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:57:15,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 5091 transitions. [2023-08-25 07:57:15,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 60.607142857142854) internal successors, (5091), 84 states have internal predecessors, (5091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:57:15,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 156.0) internal successors, (13260), 85 states have internal predecessors, (13260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:57:15,378 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 156.0) internal successors, (13260), 85 states have internal predecessors, (13260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:57:15,378 INFO L175 Difference]: Start difference. First operand has 920 places, 1185 transitions, 29908 flow. Second operand 84 states and 5091 transitions. [2023-08-25 07:57:15,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1003 places, 1463 transitions, 47205 flow [2023-08-25 07:57:30,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 925 places, 1463 transitions, 42638 flow, removed 1298 selfloop flow, removed 78 redundant places. [2023-08-25 07:57:30,673 INFO L231 Difference]: Finished difference. Result has 929 places, 1207 transitions, 29944 flow [2023-08-25 07:57:30,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=26419, PETRI_DIFFERENCE_MINUEND_PLACES=842, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1089, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=29944, PETRI_PLACES=929, PETRI_TRANSITIONS=1207} [2023-08-25 07:57:30,674 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 905 predicate places. [2023-08-25 07:57:30,675 INFO L495 AbstractCegarLoop]: Abstraction has has 929 places, 1207 transitions, 29944 flow [2023-08-25 07:57:30,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 57.09090909090909) internal successors, (2512), 44 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:57:30,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:57:30,675 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:57:30,682 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 07:57:30,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:57:30,879 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:57:30,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:57:30,880 INFO L85 PathProgramCache]: Analyzing trace with hash 2115354674, now seen corresponding path program 23 times [2023-08-25 07:57:30,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:57:30,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508846739] [2023-08-25 07:57:30,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:57:30,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:57:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:57:31,549 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:57:31,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:57:31,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508846739] [2023-08-25 07:57:31,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508846739] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:57:31,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315376207] [2023-08-25 07:57:31,550 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 07:57:31,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:57:31,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:57:31,551 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 07:57:31,552 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 07:57:31,655 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2023-08-25 07:57:31,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:57:31,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-25 07:57:31,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:57:31,737 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:57:31,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:57:32,229 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:57:32,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315376207] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:57:32,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:57:32,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 43 [2023-08-25 07:57:32,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147456221] [2023-08-25 07:57:32,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:57:32,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-08-25 07:57:32,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:57:32,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-08-25 07:57:32,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=469, Invalid=1511, Unknown=0, NotChecked=0, Total=1980 [2023-08-25 07:57:32,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:57:32,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 929 places, 1207 transitions, 29944 flow. Second operand has 45 states, 45 states have (on average 57.111111111111114) internal successors, (2570), 45 states have internal predecessors, (2570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:57:32,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:57:32,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:57:32,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:57:39,965 INFO L124 PetriNetUnfolderBase]: 4708/8879 cut-off events. [2023-08-25 07:57:39,965 INFO L125 PetriNetUnfolderBase]: For 5430307/5430307 co-relation queries the response was YES. [2023-08-25 07:57:40,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181164 conditions, 8879 events. 4708/8879 cut-off events. For 5430307/5430307 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 56591 event pairs, 98 based on Foata normal form. 8/8887 useless extension candidates. Maximal degree in co-relation 180816. Up to 3234 conditions per place. [2023-08-25 07:57:40,414 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 192 selfloop transitions, 1114 changer transitions 164/1470 dead transitions. [2023-08-25 07:57:40,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1013 places, 1470 transitions, 45319 flow [2023-08-25 07:57:40,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-08-25 07:57:40,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2023-08-25 07:57:40,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 5155 transitions. [2023-08-25 07:57:40,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.388763197586727 [2023-08-25 07:57:40,419 INFO L72 ComplementDD]: Start complementDD. Operand 85 states and 5155 transitions. [2023-08-25 07:57:40,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 85 states and 5155 transitions. [2023-08-25 07:57:40,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:57:40,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 85 states and 5155 transitions. [2023-08-25 07:57:40,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 86 states, 85 states have (on average 60.64705882352941) internal successors, (5155), 85 states have internal predecessors, (5155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:57:40,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 86 states, 86 states have (on average 156.0) internal successors, (13416), 86 states have internal predecessors, (13416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:57:40,434 INFO L81 ComplementDD]: Finished complementDD. Result has 86 states, 86 states have (on average 156.0) internal successors, (13416), 86 states have internal predecessors, (13416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:57:40,434 INFO L175 Difference]: Start difference. First operand has 929 places, 1207 transitions, 29944 flow. Second operand 85 states and 5155 transitions. [2023-08-25 07:57:40,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1013 places, 1470 transitions, 45319 flow [2023-08-25 07:57:57,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 944 places, 1470 transitions, 42763 flow, removed 427 selfloop flow, removed 69 redundant places. [2023-08-25 07:57:57,363 INFO L231 Difference]: Finished difference. Result has 946 places, 1209 transitions, 29863 flow [2023-08-25 07:57:57,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=27388, PETRI_DIFFERENCE_MINUEND_PLACES=860, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=85, PETRI_FLOW=29863, PETRI_PLACES=946, PETRI_TRANSITIONS=1209} [2023-08-25 07:57:57,368 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 922 predicate places. [2023-08-25 07:57:57,368 INFO L495 AbstractCegarLoop]: Abstraction has has 946 places, 1209 transitions, 29863 flow [2023-08-25 07:57:57,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 57.111111111111114) internal successors, (2570), 45 states have internal predecessors, (2570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:57:57,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:57:57,368 INFO L208 CegarLoopForPetriNet]: trace histogram [21, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:57:57,373 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 07:57:57,573 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,SelfDestructingSolverStorable27 [2023-08-25 07:57:57,573 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:57:57,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:57:57,574 INFO L85 PathProgramCache]: Analyzing trace with hash 2140562876, now seen corresponding path program 24 times [2023-08-25 07:57:57,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:57:57,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924829252] [2023-08-25 07:57:57,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:57:57,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:57:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:57:57,843 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 380 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:57:57,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:57:57,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924829252] [2023-08-25 07:57:57,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924829252] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:57:57,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93462275] [2023-08-25 07:57:57,843 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 07:57:57,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:57:57,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:57:57,844 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 07:57:57,849 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 07:57:57,962 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2023-08-25 07:57:57,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:57:57,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-25 07:57:57,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:57:58,013 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 400 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:57:58,013 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 07:57:58,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93462275] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:57:58,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 07:57:58,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 24 [2023-08-25 07:57:58,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516526202] [2023-08-25 07:57:58,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:57:58,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-25 07:57:58,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:57:58,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-25 07:57:58,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2023-08-25 07:57:58,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 156 [2023-08-25 07:57:58,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 946 places, 1209 transitions, 29863 flow. Second operand has 23 states, 23 states have (on average 57.130434782608695) internal successors, (1314), 23 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:57:58,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:57:58,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 156 [2023-08-25 07:57:58,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:58:40,106 INFO L124 PetriNetUnfolderBase]: 48105/73385 cut-off events. [2023-08-25 07:58:40,106 INFO L125 PetriNetUnfolderBase]: For 48263889/48263889 co-relation queries the response was YES. [2023-08-25 07:58:45,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1471812 conditions, 73385 events. 48105/73385 cut-off events. For 48263889/48263889 co-relation queries the response was YES. Maximal size of possible extension queue 1304. Compared 513501 event pairs, 528 based on Foata normal form. 1978/75363 useless extension candidates. Maximal degree in co-relation 1471462. Up to 25549 conditions per place. [2023-08-25 07:58:45,871 INFO L140 encePairwiseOnDemand]: 153/156 looper letters, 74 selfloop transitions, 28 changer transitions 14053/14155 dead transitions. [2023-08-25 07:58:45,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 958 places, 14155 transitions, 373499 flow [2023-08-25 07:58:45,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-25 07:58:45,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-25 07:58:45,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1444 transitions. [2023-08-25 07:58:45,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40245261984392416 [2023-08-25 07:58:45,873 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1444 transitions. [2023-08-25 07:58:45,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1444 transitions. [2023-08-25 07:58:45,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:58:45,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1444 transitions. [2023-08-25 07:58:45,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 62.78260869565217) internal successors, (1444), 23 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:58:45,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 156.0) internal successors, (3744), 24 states have internal predecessors, (3744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:58:45,876 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 156.0) internal successors, (3744), 24 states have internal predecessors, (3744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:58:45,876 INFO L175 Difference]: Start difference. First operand has 946 places, 1209 transitions, 29863 flow. Second operand 23 states and 1444 transitions. [2023-08-25 07:58:45,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 958 places, 14155 transitions, 373499 flow [2023-08-25 08:00:34,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 852 places, 14155 transitions, 345355 flow, removed 313 selfloop flow, removed 106 redundant places. [2023-08-25 08:00:34,232 INFO L231 Difference]: Finished difference. Result has 852 places, 73 transitions, 1210 flow [2023-08-25 08:00:34,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=25576, PETRI_DIFFERENCE_MINUEND_PLACES=830, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1210, PETRI_PLACES=852, PETRI_TRANSITIONS=73} [2023-08-25 08:00:34,234 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 828 predicate places. [2023-08-25 08:00:34,234 INFO L495 AbstractCegarLoop]: Abstraction has has 852 places, 73 transitions, 1210 flow [2023-08-25 08:00:34,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 57.130434782608695) internal successors, (1314), 23 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 08:00:34,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 08:00:34,234 INFO L208 CegarLoopForPetriNet]: trace histogram [21, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 08:00:34,241 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 08:00:34,439 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,SelfDestructingSolverStorable28 [2023-08-25 08:00:34,439 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 08:00:34,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 08:00:34,440 INFO L85 PathProgramCache]: Analyzing trace with hash 440581829, now seen corresponding path program 25 times [2023-08-25 08:00:34,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 08:00:34,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830025034] [2023-08-25 08:00:34,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 08:00:34,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 08:00:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 08:00:34,694 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 380 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 08:00:34,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 08:00:34,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830025034] [2023-08-25 08:00:34,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830025034] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 08:00:34,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661529809] [2023-08-25 08:00:34,695 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 08:00:34,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 08:00:34,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 08:00:34,696 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 08:00:34,702 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 08:00:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 08:00:34,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-25 08:00:34,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 08:00:34,818 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 400 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 08:00:34,818 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 08:00:34,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661529809] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 08:00:34,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 08:00:34,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 24 [2023-08-25 08:00:34,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995584097] [2023-08-25 08:00:34,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 08:00:34,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-25 08:00:34,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 08:00:34,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-25 08:00:34,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2023-08-25 08:00:34,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 156 [2023-08-25 08:00:34,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 852 places, 73 transitions, 1210 flow. Second operand has 23 states, 23 states have (on average 57.130434782608695) internal successors, (1314), 23 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 08:00:34,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 08:00:34,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 156 [2023-08-25 08:00:34,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 08:00:35,241 INFO L124 PetriNetUnfolderBase]: 877/1569 cut-off events. [2023-08-25 08:00:35,242 INFO L125 PetriNetUnfolderBase]: For 185723/185723 co-relation queries the response was YES. [2023-08-25 08:00:35,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13246 conditions, 1569 events. 877/1569 cut-off events. For 185723/185723 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6218 event pairs, 4 based on Foata normal form. 54/1623 useless extension candidates. Maximal degree in co-relation 12921. Up to 668 conditions per place. [2023-08-25 08:00:35,272 INFO L140 encePairwiseOnDemand]: 153/156 looper letters, 0 selfloop transitions, 0 changer transitions 797/797 dead transitions. [2023-08-25 08:00:35,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 797 transitions, 12529 flow [2023-08-25 08:00:35,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-25 08:00:35,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-25 08:00:35,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1357 transitions. [2023-08-25 08:00:35,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782051282051282 [2023-08-25 08:00:35,274 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1357 transitions. [2023-08-25 08:00:35,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1357 transitions. [2023-08-25 08:00:35,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 08:00:35,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1357 transitions. [2023-08-25 08:00:35,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 59.0) internal successors, (1357), 23 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 08:00:35,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 156.0) internal successors, (3744), 24 states have internal predecessors, (3744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 08:00:35,276 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 156.0) internal successors, (3744), 24 states have internal predecessors, (3744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 08:00:35,277 INFO L175 Difference]: Start difference. First operand has 852 places, 73 transitions, 1210 flow. Second operand 23 states and 1357 transitions. [2023-08-25 08:00:35,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 797 transitions, 12529 flow [2023-08-25 08:00:35,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 797 transitions, 6300 flow, removed 1261 selfloop flow, removed 159 redundant places. [2023-08-25 08:00:35,477 INFO L231 Difference]: Finished difference. Result has 317 places, 0 transitions, 0 flow [2023-08-25 08:00:35,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=317, PETRI_TRANSITIONS=0} [2023-08-25 08:00:35,478 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 293 predicate places. [2023-08-25 08:00:35,478 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 0 transitions, 0 flow [2023-08-25 08:00:35,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 57.130434782608695) internal successors, (1314), 23 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 08:00:35,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 13 remaining) [2023-08-25 08:00:35,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2023-08-25 08:00:35,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (10 of 13 remaining) [2023-08-25 08:00:35,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 13 remaining) [2023-08-25 08:00:35,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 13 remaining) [2023-08-25 08:00:35,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2023-08-25 08:00:35,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2023-08-25 08:00:35,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2023-08-25 08:00:35,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2023-08-25 08:00:35,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2023-08-25 08:00:35,481 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2023-08-25 08:00:35,481 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2023-08-25 08:00:35,481 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2023-08-25 08:00:35,488 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 08:00:35,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 08:00:35,686 INFO L445 BasicCegarLoop]: Path program histogram: [25, 2, 1, 1, 1] [2023-08-25 08:00:35,691 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-25 08:00:35,692 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 08:00:35,696 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 08:00:35 BasicIcfg [2023-08-25 08:00:35,696 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 08:00:35,699 INFO L158 Benchmark]: Toolchain (without parser) took 409614.17ms. Allocated memory was 360.7MB in the beginning and 13.9GB in the end (delta: 13.6GB). Free memory was 335.8MB in the beginning and 9.2GB in the end (delta: -8.8GB). Peak memory consumption was 4.7GB. Max. memory is 16.0GB. [2023-08-25 08:00:35,699 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 360.7MB. Free memory is still 337.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 08:00:35,699 INFO L158 Benchmark]: CACSL2BoogieTranslator took 345.23ms. Allocated memory is still 360.7MB. Free memory was 335.3MB in the beginning and 315.8MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-25 08:00:35,699 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.58ms. Allocated memory is still 360.7MB. Free memory was 315.8MB in the beginning and 314.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 08:00:35,700 INFO L158 Benchmark]: Boogie Preprocessor took 27.79ms. Allocated memory is still 360.7MB. Free memory was 314.2MB in the beginning and 312.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 08:00:35,700 INFO L158 Benchmark]: RCFGBuilder took 357.42ms. Allocated memory is still 360.7MB. Free memory was 312.8MB in the beginning and 296.5MB in the end (delta: 16.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-25 08:00:35,700 INFO L158 Benchmark]: TraceAbstraction took 408839.28ms. Allocated memory was 360.7MB in the beginning and 13.9GB in the end (delta: 13.6GB). Free memory was 296.0MB in the beginning and 9.2GB in the end (delta: -8.9GB). Peak memory consumption was 4.7GB. Max. memory is 16.0GB. [2023-08-25 08:00:35,701 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 360.7MB. Free memory is still 337.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 345.23ms. Allocated memory is still 360.7MB. Free memory was 335.3MB in the beginning and 315.8MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 40.58ms. Allocated memory is still 360.7MB. Free memory was 315.8MB in the beginning and 314.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.79ms. Allocated memory is still 360.7MB. Free memory was 314.2MB in the beginning and 312.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 357.42ms. Allocated memory is still 360.7MB. Free memory was 312.8MB in the beginning and 296.5MB in the end (delta: 16.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 408839.28ms. Allocated memory was 360.7MB in the beginning and 13.9GB in the end (delta: 13.6GB). Free memory was 296.0MB in the beginning and 9.2GB in the end (delta: -8.9GB). Peak memory consumption was 4.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 245]: Unsoundness Warning unspecified type, defaulting to int C: short [245] - GenericResultAtLocation [Line: 245]: Unsoundness Warning unspecified type, defaulting to int C: short [245] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 77 PlacesBefore, 24 PlacesAfterwards, 76 TransitionsBefore, 19 TransitionsAfterwards, 1792 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 4 ChoiceCompositions, 78 TotalNumberOfCompositions, 2074 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1641, independent: 1592, independent conditional: 0, independent unconditional: 1592, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 973, independent: 953, independent conditional: 0, independent unconditional: 953, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1641, independent: 639, independent conditional: 0, independent unconditional: 639, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 973, unknown conditional: 0, unknown unconditional: 973] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 22, Positive conditional cache size: 0, Positive unconditional cache size: 22, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 716]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 719]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 693]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 698]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 698]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 706]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 706]: there are no data races For all program executions holds that there are no data races at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 101 locations, 13 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: 408.7s, OverallIterations: 30, TraceHistogramMax: 21, PathProgramHistogramMax: 25, EmptinessCheckTime: 0.0s, AutomataDifference: 378.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15852 SdHoareTripleChecker+Valid, 5.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15852 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 4.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1363 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9318 IncrementalHoareTripleChecker+Invalid, 10681 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1363 mSolverCounterUnsat, 0 mSDtfsCounter, 9318 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3082 GetRequests, 862 SyntacticMatches, 378 SemanticMatches, 1842 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60909 ImplicationChecksByTransitivity, 31.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29944occurred in iteration=27, InterpolantAutomatonStates: 1199, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 21.0s InterpolantComputationTime, 1626 NumberOfCodeBlocks, 1625 NumberOfCodeBlocksAsserted, 202 NumberOfCheckSat, 2237 ConstructedInterpolants, 0 QuantifiedInterpolants, 10057 SizeOfPredicates, 516 NumberOfNonLiveVariables, 6736 ConjunctsInSsa, 682 ConjunctsInUnsatCore, 72 InterpolantComputations, 10 PerfectInterpolantSequences, 1584/14479 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 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-25 08:00:35,718 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...