/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/pthread-wmm/mix035.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 01:04:19,563 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 01:04:19,645 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 01:04:19,650 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 01:04:19,650 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 01:04:19,680 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 01:04:19,681 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 01:04:19,685 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 01:04:19,686 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 01:04:19,690 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 01:04:19,690 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 01:04:19,690 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 01:04:19,690 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 01:04:19,692 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 01:04:19,692 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 01:04:19,692 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 01:04:19,692 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 01:04:19,693 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 01:04:19,693 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 01:04:19,693 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 01:04:19,693 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 01:04:19,694 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 01:04:19,694 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 01:04:19,694 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 01:04:19,695 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 01:04:19,695 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 01:04:19,695 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 01:04:19,695 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 01:04:19,696 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 01:04:19,696 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 01:04:19,697 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 01:04:19,697 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 01:04:19,697 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 01:04:19,697 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 01:04:19,698 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 01:04:19,698 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 01:04:20,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 01:04:20,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 01:04:20,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 01:04:20,041 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 01:04:20,041 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 01:04:20,042 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix035.oepc.i [2023-08-26 01:04:21,293 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 01:04:21,622 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 01:04:21,623 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix035.oepc.i [2023-08-26 01:04:21,647 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/479114cff/066eaaac16bb403ca30d347d12290319/FLAG1fa1d36b2 [2023-08-26 01:04:21,662 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/479114cff/066eaaac16bb403ca30d347d12290319 [2023-08-26 01:04:21,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 01:04:21,667 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 01:04:21,669 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 01:04:21,669 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 01:04:21,672 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 01:04:21,673 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 01:04:21" (1/1) ... [2023-08-26 01:04:21,674 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15c0ca99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:04:21, skipping insertion in model container [2023-08-26 01:04:21,674 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 01:04:21" (1/1) ... [2023-08-26 01:04:21,732 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 01:04:22,089 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 01:04:22,103 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 01:04:22,117 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-26 01:04:22,118 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-26 01:04:22,161 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 01:04:22,197 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 01:04:22,197 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 01:04:22,203 INFO L206 MainTranslator]: Completed translation [2023-08-26 01:04:22,203 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:04:22 WrapperNode [2023-08-26 01:04:22,203 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 01:04:22,204 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 01:04:22,204 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 01:04:22,204 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 01:04:22,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:04:22" (1/1) ... [2023-08-26 01:04:22,228 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:04:22" (1/1) ... [2023-08-26 01:04:22,267 INFO L138 Inliner]: procedures = 176, calls = 59, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 499 [2023-08-26 01:04:22,267 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 01:04:22,268 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 01:04:22,268 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 01:04:22,268 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 01:04:22,276 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:04:22" (1/1) ... [2023-08-26 01:04:22,276 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:04:22" (1/1) ... [2023-08-26 01:04:22,282 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:04:22" (1/1) ... [2023-08-26 01:04:22,282 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:04:22" (1/1) ... [2023-08-26 01:04:22,306 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:04:22" (1/1) ... [2023-08-26 01:04:22,324 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:04:22" (1/1) ... [2023-08-26 01:04:22,328 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:04:22" (1/1) ... [2023-08-26 01:04:22,331 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:04:22" (1/1) ... [2023-08-26 01:04:22,354 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 01:04:22,354 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 01:04:22,355 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 01:04:22,355 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 01:04:22,355 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:04:22" (1/1) ... [2023-08-26 01:04:22,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 01:04:22,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 01:04:22,382 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 01:04:22,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 01:04:22,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 01:04:22,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 01:04:22,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 01:04:22,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 01:04:22,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 01:04:22,424 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-26 01:04:22,424 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-26 01:04:22,424 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-26 01:04:22,424 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-26 01:04:22,425 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-26 01:04:22,425 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-26 01:04:22,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 01:04:22,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 01:04:22,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 01:04:22,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 01:04:22,428 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 01:04:22,635 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 01:04:22,636 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 01:04:23,683 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 01:05:12,906 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 01:05:12,907 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 01:05:12,909 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:05:12 BoogieIcfgContainer [2023-08-26 01:05:12,909 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 01:05:12,911 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 01:05:12,911 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 01:05:12,914 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 01:05:12,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 01:04:21" (1/3) ... [2023-08-26 01:05:12,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@449e00a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 01:05:12, skipping insertion in model container [2023-08-26 01:05:12,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:04:22" (2/3) ... [2023-08-26 01:05:12,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@449e00a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 01:05:12, skipping insertion in model container [2023-08-26 01:05:12,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:05:12" (3/3) ... [2023-08-26 01:05:12,916 INFO L112 eAbstractionObserver]: Analyzing ICFG mix035.oepc.i [2023-08-26 01:05:12,929 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 01:05:12,929 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 251 error locations. [2023-08-26 01:05:12,929 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 01:05:23,292 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 01:05:23,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 377 places, 370 transitions, 755 flow [2023-08-26 01:05:28,071 INFO L124 PetriNetUnfolderBase]: 3/367 cut-off events. [2023-08-26 01:05:28,072 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 01:05:28,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377 conditions, 367 events. 3/367 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 1986 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 328. Up to 2 conditions per place. [2023-08-26 01:05:28,083 INFO L82 GeneralOperation]: Start removeDead. Operand has 377 places, 370 transitions, 755 flow [2023-08-26 01:05:28,098 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 374 places, 367 transitions, 743 flow [2023-08-26 01:05:28,101 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 01:05:28,115 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 374 places, 367 transitions, 743 flow [2023-08-26 01:05:28,122 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 374 places, 367 transitions, 743 flow [2023-08-26 01:05:28,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 374 places, 367 transitions, 743 flow [2023-08-26 01:05:32,670 INFO L124 PetriNetUnfolderBase]: 3/367 cut-off events. [2023-08-26 01:05:32,670 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 01:05:32,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377 conditions, 367 events. 3/367 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 1991 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 328. Up to 2 conditions per place. [2023-08-26 01:05:32,694 INFO L119 LiptonReduction]: Number of co-enabled transitions 68610 [2023-08-26 01:05:45,649 INFO L134 LiptonReduction]: Checked pairs total: 665272 [2023-08-26 01:05:45,649 INFO L136 LiptonReduction]: Total number of compositions: 189 [2023-08-26 01:05:45,661 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 01:05:45,666 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;@59d01317, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 01:05:45,666 INFO L358 AbstractCegarLoop]: Starting to check reachability of 467 error locations. [2023-08-26 01:05:45,668 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 01:05:45,668 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-08-26 01:05:45,668 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 01:05:45,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 01:05:45,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 01:05:45,669 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err8ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONDATA_RACE, P0Err1ASSERT_VIOLATIONDATA_RACE, P0Err2ASSERT_VIOLATIONDATA_RACE, P0Err3ASSERT_VIOLATIONDATA_RACE (and 463 more)] === [2023-08-26 01:05:45,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 01:05:45,673 INFO L85 PathProgramCache]: Analyzing trace with hash 7460295, now seen corresponding path program 1 times [2023-08-26 01:05:45,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 01:05:45,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98526429] [2023-08-26 01:05:45,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 01:05:45,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 01:05:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 01:05:46,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 01:05:46,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 01:05:46,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98526429] [2023-08-26 01:05:46,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98526429] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 01:05:46,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 01:05:46,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 01:05:46,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149514088] [2023-08-26 01:05:46,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 01:05:46,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 01:05:46,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 01:05:46,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 01:05:46,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 01:05:46,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 559 [2023-08-26 01:05:46,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 274 transitions, 557 flow. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:05:46,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 01:05:46,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 559 [2023-08-26 01:05:46,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 01:08:37,597 INFO L124 PetriNetUnfolderBase]: 1764/2575 cut-off events. [2023-08-26 01:08:37,597 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2023-08-26 01:08:37,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5217 conditions, 2575 events. 1764/2575 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12102 event pairs, 224 based on Foata normal form. 0/2425 useless extension candidates. Maximal degree in co-relation 5206. Up to 2189 conditions per place. [2023-08-26 01:08:37,608 INFO L140 encePairwiseOnDemand]: 306/559 looper letters, 36 selfloop transitions, 2 changer transitions 2/40 dead transitions. [2023-08-26 01:08:37,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 40 transitions, 175 flow [2023-08-26 01:08:37,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 01:08:37,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 01:08:37,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 783 transitions. [2023-08-26 01:08:37,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4669051878354204 [2023-08-26 01:08:37,629 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 783 transitions. [2023-08-26 01:08:37,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 783 transitions. [2023-08-26 01:08:37,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 01:08:37,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 783 transitions. [2023-08-26 01:08:37,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:08:37,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 559.0) internal successors, (2236), 4 states have internal predecessors, (2236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:08:37,645 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 559.0) internal successors, (2236), 4 states have internal predecessors, (2236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:08:37,646 INFO L175 Difference]: Start difference. First operand has 283 places, 274 transitions, 557 flow. Second operand 3 states and 783 transitions. [2023-08-26 01:08:37,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 40 transitions, 175 flow [2023-08-26 01:08:37,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 40 transitions, 170 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 01:08:37,650 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 54 flow [2023-08-26 01:08:37,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=559, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2023-08-26 01:08:37,657 INFO L281 CegarLoopForPetriNet]: 283 programPoint places, -251 predicate places. [2023-08-26 01:08:37,657 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 54 flow [2023-08-26 01:08:37,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:08:37,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 01:08:37,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 01:08:37,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 01:08:37,659 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONDATA_RACE, P0Err1ASSERT_VIOLATIONDATA_RACE, P0Err2ASSERT_VIOLATIONDATA_RACE, P0Err3ASSERT_VIOLATIONDATA_RACE (and 463 more)] === [2023-08-26 01:08:37,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 01:08:37,659 INFO L85 PathProgramCache]: Analyzing trace with hash 665176812, now seen corresponding path program 1 times [2023-08-26 01:08:37,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 01:08:37,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607402933] [2023-08-26 01:08:37,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 01:08:37,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 01:08:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 01:08:38,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 01:08:38,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 01:08:38,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607402933] [2023-08-26 01:08:38,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607402933] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 01:08:38,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 01:08:38,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 01:08:38,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834983882] [2023-08-26 01:08:38,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 01:08:38,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 01:08:38,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 01:08:38,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 01:08:38,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 01:08:38,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 559 [2023-08-26 01:08:38,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:08:38,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 01:08:38,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 559 [2023-08-26 01:08:38,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 01:10:53,765 INFO L124 PetriNetUnfolderBase]: 1269/1880 cut-off events. [2023-08-26 01:10:53,765 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2023-08-26 01:10:53,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3948 conditions, 1880 events. 1269/1880 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7458 event pairs, 429 based on Foata normal form. 50/1930 useless extension candidates. Maximal degree in co-relation 3938. Up to 1316 conditions per place. [2023-08-26 01:10:53,773 INFO L140 encePairwiseOnDemand]: 556/559 looper letters, 30 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2023-08-26 01:10:53,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 32 transitions, 140 flow [2023-08-26 01:10:53,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 01:10:53,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 01:10:53,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 324 transitions. [2023-08-26 01:10:53,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.19320214669051877 [2023-08-26 01:10:53,776 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 324 transitions. [2023-08-26 01:10:53,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 324 transitions. [2023-08-26 01:10:53,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 01:10:53,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 324 transitions. [2023-08-26 01:10:53,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:10:53,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 559.0) internal successors, (2236), 4 states have internal predecessors, (2236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:10:53,783 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 559.0) internal successors, (2236), 4 states have internal predecessors, (2236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:10:53,783 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 54 flow. Second operand 3 states and 324 transitions. [2023-08-26 01:10:53,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 32 transitions, 140 flow [2023-08-26 01:10:53,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 32 transitions, 134 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 01:10:53,785 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 58 flow [2023-08-26 01:10:53,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=559, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2023-08-26 01:10:53,786 INFO L281 CegarLoopForPetriNet]: 283 programPoint places, -251 predicate places. [2023-08-26 01:10:53,787 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 58 flow [2023-08-26 01:10:53,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:10:53,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 01:10:53,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 01:10:53,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 01:10:53,795 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONDATA_RACE, P0Err1ASSERT_VIOLATIONDATA_RACE, P0Err2ASSERT_VIOLATIONDATA_RACE, P0Err3ASSERT_VIOLATIONDATA_RACE (and 463 more)] === [2023-08-26 01:10:53,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 01:10:53,796 INFO L85 PathProgramCache]: Analyzing trace with hash -781594882, now seen corresponding path program 1 times [2023-08-26 01:10:53,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 01:10:53,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158760251] [2023-08-26 01:10:53,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 01:10:53,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 01:10:54,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 01:10:54,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 01:10:54,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 01:10:54,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158760251] [2023-08-26 01:10:54,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158760251] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 01:10:54,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 01:10:54,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 01:10:54,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153699259] [2023-08-26 01:10:54,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 01:10:54,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 01:10:54,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 01:10:54,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 01:10:54,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 01:10:54,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 559 [2023-08-26 01:10:54,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:10:54,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 01:10:54,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 559 [2023-08-26 01:10:54,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 01:12:42,297 INFO L124 PetriNetUnfolderBase]: 940/1493 cut-off events. [2023-08-26 01:12:42,297 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2023-08-26 01:12:42,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3241 conditions, 1493 events. 940/1493 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6474 event pairs, 204 based on Foata normal form. 150/1643 useless extension candidates. Maximal degree in co-relation 3230. Up to 769 conditions per place. [2023-08-26 01:12:42,302 INFO L140 encePairwiseOnDemand]: 553/559 looper letters, 35 selfloop transitions, 4 changer transitions 27/66 dead transitions. [2023-08-26 01:12:42,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 66 transitions, 291 flow [2023-08-26 01:12:42,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 01:12:42,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 01:12:42,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 533 transitions. [2023-08-26 01:12:42,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.19069767441860466 [2023-08-26 01:12:42,305 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 533 transitions. [2023-08-26 01:12:42,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 533 transitions. [2023-08-26 01:12:42,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 01:12:42,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 533 transitions. [2023-08-26 01:12:42,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 106.6) internal successors, (533), 5 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:12:42,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 559.0) internal successors, (3354), 6 states have internal predecessors, (3354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:12:42,312 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 559.0) internal successors, (3354), 6 states have internal predecessors, (3354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:12:42,312 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 58 flow. Second operand 5 states and 533 transitions. [2023-08-26 01:12:42,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 66 transitions, 291 flow [2023-08-26 01:12:42,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 66 transitions, 281 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 01:12:42,315 INFO L231 Difference]: Finished difference. Result has 37 places, 25 transitions, 90 flow [2023-08-26 01:12:42,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=559, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=90, PETRI_PLACES=37, PETRI_TRANSITIONS=25} [2023-08-26 01:12:42,316 INFO L281 CegarLoopForPetriNet]: 283 programPoint places, -246 predicate places. [2023-08-26 01:12:42,316 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 25 transitions, 90 flow [2023-08-26 01:12:42,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:12:42,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 01:12:42,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 01:12:42,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 01:12:42,317 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONDATA_RACE, P0Err1ASSERT_VIOLATIONDATA_RACE, P0Err2ASSERT_VIOLATIONDATA_RACE, P0Err3ASSERT_VIOLATIONDATA_RACE (and 463 more)] === [2023-08-26 01:12:42,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 01:12:42,318 INFO L85 PathProgramCache]: Analyzing trace with hash 145045558, now seen corresponding path program 1 times [2023-08-26 01:12:42,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 01:12:42,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509198832] [2023-08-26 01:12:42,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 01:12:42,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 01:12:43,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 01:12:46,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 01:12:46,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 01:12:46,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509198832] [2023-08-26 01:12:46,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509198832] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 01:12:46,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 01:12:46,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 01:12:46,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452355813] [2023-08-26 01:12:46,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 01:12:46,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 01:12:46,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 01:12:46,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 01:12:46,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 01:12:46,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 559 [2023-08-26 01:12:46,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 25 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 95.8) internal successors, (479), 5 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:12:46,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 01:12:46,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 559 [2023-08-26 01:12:46,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 01:13:39,307 INFO L124 PetriNetUnfolderBase]: 452/773 cut-off events. [2023-08-26 01:13:39,307 INFO L125 PetriNetUnfolderBase]: For 196/196 co-relation queries the response was YES. [2023-08-26 01:13:39,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2052 conditions, 773 events. 452/773 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3043 event pairs, 162 based on Foata normal form. 70/843 useless extension candidates. Maximal degree in co-relation 2038. Up to 280 conditions per place. [2023-08-26 01:13:39,310 INFO L140 encePairwiseOnDemand]: 553/559 looper letters, 47 selfloop transitions, 7 changer transitions 27/81 dead transitions. [2023-08-26 01:13:39,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 81 transitions, 412 flow [2023-08-26 01:13:39,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 01:13:39,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 01:13:39,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 641 transitions. [2023-08-26 01:13:39,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.19111508646392367 [2023-08-26 01:13:39,314 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 641 transitions. [2023-08-26 01:13:39,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 641 transitions. [2023-08-26 01:13:39,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 01:13:39,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 641 transitions. [2023-08-26 01:13:39,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 106.83333333333333) internal successors, (641), 6 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:13:39,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 559.0) internal successors, (3913), 7 states have internal predecessors, (3913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:13:39,322 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 559.0) internal successors, (3913), 7 states have internal predecessors, (3913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:13:39,322 INFO L175 Difference]: Start difference. First operand has 37 places, 25 transitions, 90 flow. Second operand 6 states and 641 transitions. [2023-08-26 01:13:39,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 81 transitions, 412 flow [2023-08-26 01:13:39,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 81 transitions, 406 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-26 01:13:39,325 INFO L231 Difference]: Finished difference. Result has 41 places, 28 transitions, 140 flow [2023-08-26 01:13:39,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=559, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=140, PETRI_PLACES=41, PETRI_TRANSITIONS=28} [2023-08-26 01:13:39,326 INFO L281 CegarLoopForPetriNet]: 283 programPoint places, -242 predicate places. [2023-08-26 01:13:39,326 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 28 transitions, 140 flow [2023-08-26 01:13:39,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 95.8) internal successors, (479), 5 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:13:39,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 01:13:39,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 01:13:39,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 01:13:39,327 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONDATA_RACE, P0Err1ASSERT_VIOLATIONDATA_RACE, P0Err2ASSERT_VIOLATIONDATA_RACE, P0Err3ASSERT_VIOLATIONDATA_RACE (and 463 more)] === [2023-08-26 01:13:39,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 01:13:39,327 INFO L85 PathProgramCache]: Analyzing trace with hash 936620517, now seen corresponding path program 1 times [2023-08-26 01:13:39,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 01:13:39,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024702533] [2023-08-26 01:13:39,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 01:13:39,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 01:13:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 01:14:29,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 01:14:29,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 01:14:29,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024702533] [2023-08-26 01:14:29,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024702533] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 01:14:29,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 01:14:29,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 01:14:29,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418165753] [2023-08-26 01:14:29,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 01:14:29,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 01:14:29,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 01:14:29,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 01:14:29,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-26 01:14:29,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 559 [2023-08-26 01:14:29,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 28 transitions, 140 flow. Second operand has 6 states, 6 states have (on average 93.0) internal successors, (558), 6 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:14:29,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 01:14:29,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 559 [2023-08-26 01:14:29,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 01:15:22,830 INFO L124 PetriNetUnfolderBase]: 494/890 cut-off events. [2023-08-26 01:15:22,830 INFO L125 PetriNetUnfolderBase]: For 1094/1094 co-relation queries the response was YES. [2023-08-26 01:15:22,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2790 conditions, 890 events. 494/890 cut-off events. For 1094/1094 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4134 event pairs, 96 based on Foata normal form. 8/898 useless extension candidates. Maximal degree in co-relation 2773. Up to 318 conditions per place. [2023-08-26 01:15:22,833 INFO L140 encePairwiseOnDemand]: 552/559 looper letters, 63 selfloop transitions, 7 changer transitions 31/101 dead transitions. [2023-08-26 01:15:22,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 101 transitions, 746 flow [2023-08-26 01:15:22,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 01:15:22,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 01:15:22,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 706 transitions. [2023-08-26 01:15:22,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.18042422693585483 [2023-08-26 01:15:22,836 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 706 transitions. [2023-08-26 01:15:22,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 706 transitions. [2023-08-26 01:15:22,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 01:15:22,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 706 transitions. [2023-08-26 01:15:22,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 100.85714285714286) internal successors, (706), 7 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:15:22,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 559.0) internal successors, (4472), 8 states have internal predecessors, (4472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:15:22,844 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 559.0) internal successors, (4472), 8 states have internal predecessors, (4472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:15:22,844 INFO L175 Difference]: Start difference. First operand has 41 places, 28 transitions, 140 flow. Second operand 7 states and 706 transitions. [2023-08-26 01:15:22,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 101 transitions, 746 flow [2023-08-26 01:15:22,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 101 transitions, 616 flow, removed 50 selfloop flow, removed 4 redundant places. [2023-08-26 01:15:22,851 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 155 flow [2023-08-26 01:15:22,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=559, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=155, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2023-08-26 01:15:22,851 INFO L281 CegarLoopForPetriNet]: 283 programPoint places, -239 predicate places. [2023-08-26 01:15:22,851 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 155 flow [2023-08-26 01:15:22,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 93.0) internal successors, (558), 6 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:15:22,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 01:15:22,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 01:15:22,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 01:15:22,852 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONDATA_RACE, P0Err1ASSERT_VIOLATIONDATA_RACE, P0Err2ASSERT_VIOLATIONDATA_RACE, P0Err3ASSERT_VIOLATIONDATA_RACE (and 463 more)] === [2023-08-26 01:15:22,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 01:15:22,853 INFO L85 PathProgramCache]: Analyzing trace with hash 766138849, now seen corresponding path program 2 times [2023-08-26 01:15:22,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 01:15:22,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239386849] [2023-08-26 01:15:22,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 01:15:22,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 01:15:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 01:15:25,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 01:15:25,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 01:15:25,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239386849] [2023-08-26 01:15:25,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239386849] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 01:15:25,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 01:15:25,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 01:15:25,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66346966] [2023-08-26 01:15:25,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 01:15:25,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 01:15:25,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 01:15:25,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 01:15:25,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-26 01:15:25,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 559 [2023-08-26 01:15:25,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 155 flow. Second operand has 6 states, 6 states have (on average 96.0) internal successors, (576), 6 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:15:25,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 01:15:25,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 559 [2023-08-26 01:15:25,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 01:16:01,678 INFO L124 PetriNetUnfolderBase]: 386/689 cut-off events. [2023-08-26 01:16:01,678 INFO L125 PetriNetUnfolderBase]: For 576/576 co-relation queries the response was YES. [2023-08-26 01:16:01,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2100 conditions, 689 events. 386/689 cut-off events. For 576/576 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2869 event pairs, 159 based on Foata normal form. 24/713 useless extension candidates. Maximal degree in co-relation 2086. Up to 308 conditions per place. [2023-08-26 01:16:01,681 INFO L140 encePairwiseOnDemand]: 553/559 looper letters, 52 selfloop transitions, 10 changer transitions 15/77 dead transitions. [2023-08-26 01:16:01,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 77 transitions, 470 flow [2023-08-26 01:16:01,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 01:16:01,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 01:16:01,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 721 transitions. [2023-08-26 01:16:01,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.18425760286225404 [2023-08-26 01:16:01,684 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 721 transitions. [2023-08-26 01:16:01,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 721 transitions. [2023-08-26 01:16:01,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 01:16:01,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 721 transitions. [2023-08-26 01:16:01,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:16:01,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 559.0) internal successors, (4472), 8 states have internal predecessors, (4472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:16:01,691 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 559.0) internal successors, (4472), 8 states have internal predecessors, (4472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:16:01,691 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 155 flow. Second operand 7 states and 721 transitions. [2023-08-26 01:16:01,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 77 transitions, 470 flow [2023-08-26 01:16:01,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 77 transitions, 448 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-08-26 01:16:01,694 INFO L231 Difference]: Finished difference. Result has 48 places, 32 transitions, 171 flow [2023-08-26 01:16:01,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=559, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=171, PETRI_PLACES=48, PETRI_TRANSITIONS=32} [2023-08-26 01:16:01,694 INFO L281 CegarLoopForPetriNet]: 283 programPoint places, -235 predicate places. [2023-08-26 01:16:01,695 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 32 transitions, 171 flow [2023-08-26 01:16:01,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.0) internal successors, (576), 6 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:16:01,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 01:16:01,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 01:16:01,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 01:16:01,695 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONDATA_RACE, P0Err1ASSERT_VIOLATIONDATA_RACE, P0Err2ASSERT_VIOLATIONDATA_RACE, P0Err3ASSERT_VIOLATIONDATA_RACE (and 463 more)] === [2023-08-26 01:16:01,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 01:16:01,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1690081381, now seen corresponding path program 1 times [2023-08-26 01:16:01,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 01:16:01,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015337922] [2023-08-26 01:16:01,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 01:16:01,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 01:16:02,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 01:16:03,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 01:16:03,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 01:16:03,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015337922] [2023-08-26 01:16:03,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015337922] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 01:16:03,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 01:16:03,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 01:16:03,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439294352] [2023-08-26 01:16:03,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 01:16:03,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 01:16:03,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 01:16:03,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 01:16:03,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 01:16:03,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 559 [2023-08-26 01:16:03,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 32 transitions, 171 flow. Second operand has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:16:03,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 01:16:03,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 559 [2023-08-26 01:16:03,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 01:16:48,492 INFO L124 PetriNetUnfolderBase]: 487/864 cut-off events. [2023-08-26 01:16:48,493 INFO L125 PetriNetUnfolderBase]: For 1185/1185 co-relation queries the response was YES. [2023-08-26 01:16:48,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2833 conditions, 864 events. 487/864 cut-off events. For 1185/1185 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4102 event pairs, 41 based on Foata normal form. 1/865 useless extension candidates. Maximal degree in co-relation 2813. Up to 417 conditions per place. [2023-08-26 01:16:48,495 INFO L140 encePairwiseOnDemand]: 556/559 looper letters, 40 selfloop transitions, 1 changer transitions 26/67 dead transitions. [2023-08-26 01:16:48,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 67 transitions, 492 flow [2023-08-26 01:16:48,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 01:16:48,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 01:16:48,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 432 transitions. [2023-08-26 01:16:48,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.19320214669051877 [2023-08-26 01:16:48,498 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 432 transitions. [2023-08-26 01:16:48,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 432 transitions. [2023-08-26 01:16:48,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 01:16:48,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 432 transitions. [2023-08-26 01:16:48,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 108.0) internal successors, (432), 4 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) [2023-08-26 01:16:48,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 559.0) internal successors, (2795), 5 states have internal predecessors, (2795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:16:48,502 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 559.0) internal successors, (2795), 5 states have internal predecessors, (2795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:16:48,502 INFO L175 Difference]: Start difference. First operand has 48 places, 32 transitions, 171 flow. Second operand 4 states and 432 transitions. [2023-08-26 01:16:48,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 67 transitions, 492 flow [2023-08-26 01:16:48,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 67 transitions, 418 flow, removed 21 selfloop flow, removed 6 redundant places. [2023-08-26 01:16:48,505 INFO L231 Difference]: Finished difference. Result has 45 places, 30 transitions, 131 flow [2023-08-26 01:16:48,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=559, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=131, PETRI_PLACES=45, PETRI_TRANSITIONS=30} [2023-08-26 01:16:48,506 INFO L281 CegarLoopForPetriNet]: 283 programPoint places, -238 predicate places. [2023-08-26 01:16:48,506 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 30 transitions, 131 flow [2023-08-26 01:16:48,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:16:48,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 01:16:48,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 01:16:48,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 01:16:48,507 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONDATA_RACE, P0Err1ASSERT_VIOLATIONDATA_RACE, P0Err2ASSERT_VIOLATIONDATA_RACE, P0Err3ASSERT_VIOLATIONDATA_RACE (and 463 more)] === [2023-08-26 01:16:48,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 01:16:48,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1105104013, now seen corresponding path program 2 times [2023-08-26 01:16:48,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 01:16:48,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762339397] [2023-08-26 01:16:48,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 01:16:48,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 01:16:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 01:16:49,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 01:16:49,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 01:16:49,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762339397] [2023-08-26 01:16:49,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762339397] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 01:16:49,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 01:16:49,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 01:16:49,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991465460] [2023-08-26 01:16:49,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 01:16:49,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 01:16:49,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 01:16:49,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 01:16:49,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 01:16:49,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 559 [2023-08-26 01:16:49,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 30 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:16:49,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 01:16:49,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 559 [2023-08-26 01:16:49,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 01:17:30,510 INFO L124 PetriNetUnfolderBase]: 296/561 cut-off events. [2023-08-26 01:17:30,510 INFO L125 PetriNetUnfolderBase]: For 615/615 co-relation queries the response was YES. [2023-08-26 01:17:30,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1786 conditions, 561 events. 296/561 cut-off events. For 615/615 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2369 event pairs, 86 based on Foata normal form. 1/562 useless extension candidates. Maximal degree in co-relation 1773. Up to 247 conditions per place. [2023-08-26 01:17:30,513 INFO L140 encePairwiseOnDemand]: 556/559 looper letters, 37 selfloop transitions, 1 changer transitions 23/61 dead transitions. [2023-08-26 01:17:30,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 61 transitions, 406 flow [2023-08-26 01:17:30,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 01:17:30,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 01:17:30,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 426 transitions. [2023-08-26 01:17:30,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.19051878354203935 [2023-08-26 01:17:30,515 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 426 transitions. [2023-08-26 01:17:30,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 426 transitions. [2023-08-26 01:17:30,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 01:17:30,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 426 transitions. [2023-08-26 01:17:30,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:17:30,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 559.0) internal successors, (2795), 5 states have internal predecessors, (2795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:17:30,519 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 559.0) internal successors, (2795), 5 states have internal predecessors, (2795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:17:30,519 INFO L175 Difference]: Start difference. First operand has 45 places, 30 transitions, 131 flow. Second operand 4 states and 426 transitions. [2023-08-26 01:17:30,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 61 transitions, 406 flow [2023-08-26 01:17:30,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 61 transitions, 388 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-26 01:17:30,522 INFO L231 Difference]: Finished difference. Result has 46 places, 30 transitions, 129 flow [2023-08-26 01:17:30,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=559, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=129, PETRI_PLACES=46, PETRI_TRANSITIONS=30} [2023-08-26 01:17:30,523 INFO L281 CegarLoopForPetriNet]: 283 programPoint places, -237 predicate places. [2023-08-26 01:17:30,523 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 30 transitions, 129 flow [2023-08-26 01:17:30,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 01:17:30,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 01:17:30,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 01:17:30,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 01:17:30,524 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONDATA_RACE, P0Err1ASSERT_VIOLATIONDATA_RACE, P0Err2ASSERT_VIOLATIONDATA_RACE, P0Err3ASSERT_VIOLATIONDATA_RACE (and 463 more)] === [2023-08-26 01:17:30,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 01:17:30,524 INFO L85 PathProgramCache]: Analyzing trace with hash -403049573, now seen corresponding path program 3 times [2023-08-26 01:17:30,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 01:17:30,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794928398] [2023-08-26 01:17:30,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 01:17:30,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 01:17:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2023-08-26 01:18:04,676 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-26 01:18:04,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 01:18:04,701 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Timeout exceeded at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkResolutionNode(Interpolator.java:275) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:152) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:260) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:237) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:848) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:776) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:352) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:283) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:327) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-08-26 01:18:04,703 INFO L158 Benchmark]: Toolchain (without parser) took 823036.34ms. Allocated memory was 388.0MB in the beginning and 14.6GB in the end (delta: 14.2GB). Free memory was 362.4MB in the beginning and 12.1GB in the end (delta: -11.7GB). Peak memory consumption was 5.9GB. Max. memory is 16.0GB. [2023-08-26 01:18:04,704 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 388.0MB. Free memory is still 364.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 01:18:04,704 INFO L158 Benchmark]: CACSL2BoogieTranslator took 533.92ms. Allocated memory is still 388.0MB. Free memory was 362.4MB in the beginning and 335.7MB in the end (delta: 26.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-26 01:18:04,704 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.65ms. Allocated memory is still 388.0MB. Free memory was 335.7MB in the beginning and 332.2MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 01:18:04,705 INFO L158 Benchmark]: Boogie Preprocessor took 85.93ms. Allocated memory is still 388.0MB. Free memory was 332.2MB in the beginning and 328.0MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-26 01:18:04,705 INFO L158 Benchmark]: RCFGBuilder took 50554.88ms. Allocated memory was 388.0MB in the beginning and 13.1GB in the end (delta: 12.8GB). Free memory was 328.0MB in the beginning and 12.1GB in the end (delta: -11.8GB). Peak memory consumption was 1.7GB. Max. memory is 16.0GB. [2023-08-26 01:18:04,706 INFO L158 Benchmark]: TraceAbstraction took 771791.62ms. Allocated memory was 13.1GB in the beginning and 14.6GB in the end (delta: 1.4GB). Free memory was 12.1GB in the beginning and 12.1GB in the end (delta: 26.3MB). Peak memory consumption was 4.9GB. Max. memory is 16.0GB. [2023-08-26 01:18:04,707 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 388.0MB. Free memory is still 364.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 533.92ms. Allocated memory is still 388.0MB. Free memory was 362.4MB in the beginning and 335.7MB in the end (delta: 26.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 63.65ms. Allocated memory is still 388.0MB. Free memory was 335.7MB in the beginning and 332.2MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 85.93ms. Allocated memory is still 388.0MB. Free memory was 332.2MB in the beginning and 328.0MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * RCFGBuilder took 50554.88ms. Allocated memory was 388.0MB in the beginning and 13.1GB in the end (delta: 12.8GB). Free memory was 328.0MB in the beginning and 12.1GB in the end (delta: -11.8GB). Peak memory consumption was 1.7GB. Max. memory is 16.0GB. * TraceAbstraction took 771791.62ms. Allocated memory was 13.1GB in the beginning and 14.6GB in the end (delta: 1.4GB). Free memory was 12.1GB in the beginning and 12.1GB in the end (delta: 26.3MB). Peak memory consumption was 4.9GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 17.5s, 374 PlacesBefore, 283 PlacesAfterwards, 367 TransitionsBefore, 274 TransitionsAfterwards, 68610 CoEnabledTransitionPairs, 7 FixpointIterations, 41 TrivialSequentialCompositions, 130 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 2 ChoiceCompositions, 189 TotalNumberOfCompositions, 665272 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 209063, independent: 205570, independent conditional: 0, independent unconditional: 205570, dependent: 3493, dependent conditional: 0, dependent unconditional: 3493, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 22389, independent: 21862, independent conditional: 0, independent unconditional: 21862, dependent: 527, dependent conditional: 0, dependent unconditional: 527, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 209063, independent: 183708, independent conditional: 0, independent unconditional: 183708, dependent: 2966, dependent conditional: 0, dependent unconditional: 2966, unknown: 22389, unknown conditional: 0, unknown unconditional: 22389] , Statistics on independence cache: Total cache size (in pairs): 5615, Positive cache size: 5377, Positive conditional cache size: 0, Positive unconditional cache size: 5377, Negative cache size: 238, Negative conditional cache size: 0, Negative unconditional cache size: 238, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - ExceptionOrErrorResult: SMTLIBException: Timeout exceeded de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Timeout exceeded: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkResolutionNode(Interpolator.java:275) RESULT: Ultimate could not prove your program: Toolchain returned no result. Completed graceful shutdown