/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/lazy01.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 04:28:56,606 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 04:28:56,693 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 [2023-08-24 04:28:56,698 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 04:28:56,699 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 04:28:56,729 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 04:28:56,730 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 04:28:56,730 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 04:28:56,731 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 04:28:56,735 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 04:28:56,735 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 04:28:56,736 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 04:28:56,736 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 04:28:56,737 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 04:28:56,737 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 04:28:56,737 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 04:28:56,738 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 04:28:56,738 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 04:28:56,738 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 04:28:56,738 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 04:28:56,739 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 04:28:56,739 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 04:28:56,740 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 04:28:56,740 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 04:28:56,740 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 04:28:56,741 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 04:28:56,741 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 04:28:56,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 04:28:56,741 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 04:28:56,742 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 04:28:56,743 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 04:28:56,743 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 04:28:56,743 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 04:28:56,743 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 04:28:56,743 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 04:28:56,744 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 04:28:57,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 04:28:57,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 04:28:57,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 04:28:57,065 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 04:28:57,066 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 04:28:57,067 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/lazy01.i [2023-08-24 04:28:58,245 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 04:28:58,506 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 04:28:58,507 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i [2023-08-24 04:28:58,531 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ae2375b6/56c9f81b71b24babbc4bc1b919d89ff5/FLAG76abb617c [2023-08-24 04:28:58,544 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ae2375b6/56c9f81b71b24babbc4bc1b919d89ff5 [2023-08-24 04:28:58,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 04:28:58,548 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 04:28:58,549 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 04:28:58,549 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 04:28:58,551 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 04:28:58,552 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 04:28:58" (1/1) ... [2023-08-24 04:28:58,553 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b05ed1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:28:58, skipping insertion in model container [2023-08-24 04:28:58,553 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 04:28:58" (1/1) ... [2023-08-24 04:28:58,594 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 04:28:58,874 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i[31042,31055] [2023-08-24 04:28:58,882 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 04:28:58,894 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 04:28:58,926 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [257] [2023-08-24 04:28:58,927 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [257] [2023-08-24 04:28:58,936 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i[31042,31055] [2023-08-24 04:28:58,953 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 04:28:58,992 INFO L206 MainTranslator]: Completed translation [2023-08-24 04:28:58,992 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:28:58 WrapperNode [2023-08-24 04:28:58,992 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 04:28:58,993 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 04:28:58,994 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 04:28:58,994 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 04:28:58,999 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:28:58" (1/1) ... [2023-08-24 04:28:59,017 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:28:58" (1/1) ... [2023-08-24 04:28:59,043 INFO L138 Inliner]: procedures = 169, calls = 33, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 62 [2023-08-24 04:28:59,043 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 04:28:59,044 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 04:28:59,044 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 04:28:59,045 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 04:28:59,052 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:28:58" (1/1) ... [2023-08-24 04:28:59,053 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:28:58" (1/1) ... [2023-08-24 04:28:59,066 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:28:58" (1/1) ... [2023-08-24 04:28:59,067 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:28:58" (1/1) ... [2023-08-24 04:28:59,075 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:28:58" (1/1) ... [2023-08-24 04:28:59,077 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:28:58" (1/1) ... [2023-08-24 04:28:59,079 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:28:58" (1/1) ... [2023-08-24 04:28:59,080 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:28:58" (1/1) ... [2023-08-24 04:28:59,082 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 04:28:59,083 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 04:28:59,083 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 04:28:59,083 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 04:28:59,084 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:28:58" (1/1) ... [2023-08-24 04:28:59,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 04:28:59,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 04:28:59,117 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) [2023-08-24 04:28:59,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 04:28:59,150 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 04:28:59,150 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 04:28:59,150 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 04:28:59,151 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 04:28:59,151 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 04:28:59,151 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 04:28:59,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 04:28:59,152 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 04:28:59,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 04:28:59,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 04:28:59,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 04:28:59,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 04:28:59,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 04:28:59,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 04:28:59,155 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 04:28:59,137 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 [2023-08-24 04:28:59,314 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 04:28:59,316 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 04:28:59,527 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 04:28:59,533 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 04:28:59,533 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 04:28:59,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 04:28:59 BoogieIcfgContainer [2023-08-24 04:28:59,535 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 04:28:59,538 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 04:28:59,538 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 04:28:59,541 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 04:28:59,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 04:28:58" (1/3) ... [2023-08-24 04:28:59,542 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ef35cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 04:28:59, skipping insertion in model container [2023-08-24 04:28:59,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:28:58" (2/3) ... [2023-08-24 04:28:59,542 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ef35cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 04:28:59, skipping insertion in model container [2023-08-24 04:28:59,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 04:28:59" (3/3) ... [2023-08-24 04:28:59,544 INFO L112 eAbstractionObserver]: Analyzing ICFG lazy01.i [2023-08-24 04:28:59,560 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 04:28:59,560 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 04:28:59,561 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 04:28:59,647 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-24 04:28:59,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 87 transitions, 198 flow [2023-08-24 04:28:59,742 INFO L124 PetriNetUnfolderBase]: 1/84 cut-off events. [2023-08-24 04:28:59,743 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 04:28:59,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 84 events. 1/84 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2023-08-24 04:28:59,747 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 87 transitions, 198 flow [2023-08-24 04:28:59,750 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 67 transitions, 149 flow [2023-08-24 04:28:59,753 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 04:28:59,760 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 67 transitions, 149 flow [2023-08-24 04:28:59,762 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 67 transitions, 149 flow [2023-08-24 04:28:59,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 67 transitions, 149 flow [2023-08-24 04:28:59,779 INFO L124 PetriNetUnfolderBase]: 0/67 cut-off events. [2023-08-24 04:28:59,779 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 04:28:59,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 67 events. 0/67 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-08-24 04:28:59,780 INFO L119 LiptonReduction]: Number of co-enabled transitions 814 [2023-08-24 04:29:02,149 INFO L134 LiptonReduction]: Checked pairs total: 1727 [2023-08-24 04:29:02,149 INFO L136 LiptonReduction]: Total number of compositions: 47 [2023-08-24 04:29:02,160 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 04:29:02,165 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;@2a071172, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 04:29:02,166 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-24 04:29:02,171 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 04:29:02,171 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-08-24 04:29:02,171 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-24 04:29:02,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:29:02,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:29:02,172 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 04:29:02,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:29:02,177 INFO L85 PathProgramCache]: Analyzing trace with hash -265877263, now seen corresponding path program 1 times [2023-08-24 04:29:02,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:29:02,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255168693] [2023-08-24 04:29:02,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:29:02,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:29:02,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:29:02,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:29:02,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:29:02,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255168693] [2023-08-24 04:29:02,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255168693] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:29:02,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:29:02,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 04:29:02,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72906871] [2023-08-24 04:29:02,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:29:02,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 04:29:02,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:29:02,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 04:29:02,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 04:29:02,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 134 [2023-08-24 04:29:02,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 55 flow. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:02,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:29:02,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 134 [2023-08-24 04:29:02,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:29:02,637 INFO L124 PetriNetUnfolderBase]: 285/474 cut-off events. [2023-08-24 04:29:02,638 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-08-24 04:29:02,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1020 conditions, 474 events. 285/474 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1667 event pairs, 103 based on Foata normal form. 12/486 useless extension candidates. Maximal degree in co-relation 858. Up to 385 conditions per place. [2023-08-24 04:29:02,644 INFO L140 encePairwiseOnDemand]: 130/134 looper letters, 28 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2023-08-24 04:29:02,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 145 flow [2023-08-24 04:29:02,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 04:29:02,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 04:29:02,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 251 transitions. [2023-08-24 04:29:02,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6243781094527363 [2023-08-24 04:29:02,660 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 251 transitions. [2023-08-24 04:29:02,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 251 transitions. [2023-08-24 04:29:02,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:29:02,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 251 transitions. [2023-08-24 04:29:02,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:02,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:02,676 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:02,680 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 55 flow. Second operand 3 states and 251 transitions. [2023-08-24 04:29:02,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 145 flow [2023-08-24 04:29:02,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 31 transitions, 133 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-24 04:29:02,689 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 65 flow [2023-08-24 04:29:02,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-08-24 04:29:02,694 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2023-08-24 04:29:02,694 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 65 flow [2023-08-24 04:29:02,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:02,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:29:02,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:29:02,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 04:29:02,695 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 04:29:02,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:29:02,696 INFO L85 PathProgramCache]: Analyzing trace with hash 2006927370, now seen corresponding path program 1 times [2023-08-24 04:29:02,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:29:02,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424388128] [2023-08-24 04:29:02,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:29:02,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:29:02,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:29:02,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:29:02,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:29:02,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424388128] [2023-08-24 04:29:02,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424388128] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:29:02,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:29:02,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 04:29:02,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312946280] [2023-08-24 04:29:02,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:29:02,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 04:29:02,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:29:02,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 04:29:02,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 04:29:02,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 134 [2023-08-24 04:29:02,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:02,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:29:02,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 134 [2023-08-24 04:29:02,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:29:02,979 INFO L124 PetriNetUnfolderBase]: 68/171 cut-off events. [2023-08-24 04:29:02,979 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-24 04:29:02,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 171 events. 68/171 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 634 event pairs, 13 based on Foata normal form. 50/221 useless extension candidates. Maximal degree in co-relation 166. Up to 117 conditions per place. [2023-08-24 04:29:02,981 INFO L140 encePairwiseOnDemand]: 129/134 looper letters, 24 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2023-08-24 04:29:02,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 31 transitions, 146 flow [2023-08-24 04:29:02,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 04:29:02,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 04:29:02,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2023-08-24 04:29:02,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5696517412935324 [2023-08-24 04:29:02,983 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 229 transitions. [2023-08-24 04:29:02,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 229 transitions. [2023-08-24 04:29:02,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:29:02,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 229 transitions. [2023-08-24 04:29:02,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:02,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:02,986 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:02,986 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 65 flow. Second operand 3 states and 229 transitions. [2023-08-24 04:29:02,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 31 transitions, 146 flow [2023-08-24 04:29:02,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 31 transitions, 143 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 04:29:02,987 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 72 flow [2023-08-24 04:29:02,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2023-08-24 04:29:02,988 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2023-08-24 04:29:02,988 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 72 flow [2023-08-24 04:29:02,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:02,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:29:02,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:29:02,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 04:29:02,989 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 04:29:02,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:29:02,989 INFO L85 PathProgramCache]: Analyzing trace with hash 202521017, now seen corresponding path program 1 times [2023-08-24 04:29:02,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:29:02,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629420632] [2023-08-24 04:29:02,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:29:02,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:29:03,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:29:03,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:29:03,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:29:03,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629420632] [2023-08-24 04:29:03,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629420632] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:29:03,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:29:03,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 04:29:03,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557436306] [2023-08-24 04:29:03,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:29:03,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 04:29:03,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:29:03,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 04:29:03,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 04:29:03,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 134 [2023-08-24 04:29:03,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:03,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:29:03,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 134 [2023-08-24 04:29:03,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:29:03,103 INFO L124 PetriNetUnfolderBase]: 75/176 cut-off events. [2023-08-24 04:29:03,103 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-08-24 04:29:03,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 176 events. 75/176 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 545 event pairs, 32 based on Foata normal form. 2/178 useless extension candidates. Maximal degree in co-relation 172. Up to 107 conditions per place. [2023-08-24 04:29:03,105 INFO L140 encePairwiseOnDemand]: 130/134 looper letters, 30 selfloop transitions, 4 changer transitions 2/36 dead transitions. [2023-08-24 04:29:03,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 36 transitions, 187 flow [2023-08-24 04:29:03,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 04:29:03,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 04:29:03,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 329 transitions. [2023-08-24 04:29:03,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6138059701492538 [2023-08-24 04:29:03,107 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 329 transitions. [2023-08-24 04:29:03,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 329 transitions. [2023-08-24 04:29:03,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:29:03,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 329 transitions. [2023-08-24 04:29:03,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:03,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 134.0) internal successors, (670), 5 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:03,110 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 134.0) internal successors, (670), 5 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:03,110 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 72 flow. Second operand 4 states and 329 transitions. [2023-08-24 04:29:03,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 36 transitions, 187 flow [2023-08-24 04:29:03,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 36 transitions, 177 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 04:29:03,111 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 79 flow [2023-08-24 04:29:03,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=79, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2023-08-24 04:29:03,112 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2023-08-24 04:29:03,112 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 79 flow [2023-08-24 04:29:03,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:03,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:29:03,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:29:03,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 04:29:03,113 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 04:29:03,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:29:03,114 INFO L85 PathProgramCache]: Analyzing trace with hash -797098962, now seen corresponding path program 1 times [2023-08-24 04:29:03,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:29:03,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102667388] [2023-08-24 04:29:03,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:29:03,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:29:03,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 04:29:03,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 04:29:03,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 04:29:03,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102667388] [2023-08-24 04:29:03,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102667388] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 04:29:03,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 04:29:03,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 04:29:03,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543405890] [2023-08-24 04:29:03,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 04:29:03,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 04:29:03,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 04:29:03,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 04:29:03,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 04:29:03,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 134 [2023-08-24 04:29:03,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 79 flow. Second operand has 5 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:03,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 04:29:03,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 134 [2023-08-24 04:29:03,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 04:29:03,263 INFO L124 PetriNetUnfolderBase]: 72/169 cut-off events. [2023-08-24 04:29:03,264 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2023-08-24 04:29:03,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 169 events. 72/169 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 526 event pairs, 17 based on Foata normal form. 4/173 useless extension candidates. Maximal degree in co-relation 288. Up to 89 conditions per place. [2023-08-24 04:29:03,266 INFO L140 encePairwiseOnDemand]: 129/134 looper letters, 36 selfloop transitions, 5 changer transitions 2/43 dead transitions. [2023-08-24 04:29:03,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 43 transitions, 221 flow [2023-08-24 04:29:03,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 04:29:03,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 04:29:03,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 404 transitions. [2023-08-24 04:29:03,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6029850746268657 [2023-08-24 04:29:03,268 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 404 transitions. [2023-08-24 04:29:03,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 404 transitions. [2023-08-24 04:29:03,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 04:29:03,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 404 transitions. [2023-08-24 04:29:03,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:03,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:03,272 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:03,272 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 79 flow. Second operand 5 states and 404 transitions. [2023-08-24 04:29:03,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 43 transitions, 221 flow [2023-08-24 04:29:03,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 43 transitions, 213 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-24 04:29:03,274 INFO L231 Difference]: Finished difference. Result has 36 places, 23 transitions, 92 flow [2023-08-24 04:29:03,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=36, PETRI_TRANSITIONS=23} [2023-08-24 04:29:03,276 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2023-08-24 04:29:03,276 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 23 transitions, 92 flow [2023-08-24 04:29:03,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 04:29:03,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 04:29:03,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 04:29:03,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 04:29:03,277 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 04:29:03,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 04:29:03,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1877937628, now seen corresponding path program 1 times [2023-08-24 04:29:03,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 04:29:03,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115542206] [2023-08-24 04:29:03,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 04:29:03,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 04:29:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 04:29:03,315 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 04:29:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 04:29:03,369 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 04:29:03,369 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 04:29:03,370 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread3Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-24 04:29:03,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-24 04:29:03,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-24 04:29:03,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-24 04:29:03,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-24 04:29:03,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 04:29:03,376 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-24 04:29:03,381 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 04:29:03,381 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 04:29:03,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 04:29:03 BasicIcfg [2023-08-24 04:29:03,430 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 04:29:03,431 INFO L158 Benchmark]: Toolchain (without parser) took 4882.57ms. Allocated memory was 367.0MB in the beginning and 440.4MB in the end (delta: 73.4MB). Free memory was 342.1MB in the beginning and 294.9MB in the end (delta: 47.2MB). Peak memory consumption was 122.2MB. Max. memory is 16.0GB. [2023-08-24 04:29:03,433 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 367.0MB. Free memory is still 343.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 04:29:03,434 INFO L158 Benchmark]: CACSL2BoogieTranslator took 443.88ms. Allocated memory is still 367.0MB. Free memory was 342.1MB in the beginning and 322.5MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 04:29:03,434 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.07ms. Allocated memory is still 367.0MB. Free memory was 322.5MB in the beginning and 320.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 04:29:03,434 INFO L158 Benchmark]: Boogie Preprocessor took 38.07ms. Allocated memory is still 367.0MB. Free memory was 320.4MB in the beginning and 319.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 04:29:03,435 INFO L158 Benchmark]: RCFGBuilder took 452.43ms. Allocated memory is still 367.0MB. Free memory was 319.0MB in the beginning and 304.6MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-24 04:29:03,435 INFO L158 Benchmark]: TraceAbstraction took 3891.87ms. Allocated memory was 367.0MB in the beginning and 440.4MB in the end (delta: 73.4MB). Free memory was 304.0MB in the beginning and 294.9MB in the end (delta: 9.1MB). Peak memory consumption was 84.5MB. Max. memory is 16.0GB. [2023-08-24 04:29:03,439 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 367.0MB. Free memory is still 343.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 443.88ms. Allocated memory is still 367.0MB. Free memory was 342.1MB in the beginning and 322.5MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 50.07ms. Allocated memory is still 367.0MB. Free memory was 322.5MB in the beginning and 320.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 38.07ms. Allocated memory is still 367.0MB. Free memory was 320.4MB in the beginning and 319.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 452.43ms. Allocated memory is still 367.0MB. Free memory was 319.0MB in the beginning and 304.6MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 3891.87ms. Allocated memory was 367.0MB in the beginning and 440.4MB in the end (delta: 73.4MB). Free memory was 304.0MB in the beginning and 294.9MB in the end (delta: 9.1MB). Peak memory consumption was 84.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 257]: Unsoundness Warning unspecified type, defaulting to int C: short [257] - GenericResultAtLocation [Line: 257]: Unsoundness Warning unspecified type, defaulting to int C: short [257] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 77 PlacesBefore, 30 PlacesAfterwards, 67 TransitionsBefore, 20 TransitionsAfterwards, 814 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 47 TotalNumberOfCompositions, 1727 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1106, independent: 1020, independent conditional: 0, independent unconditional: 1020, dependent: 86, dependent conditional: 0, dependent unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 443, independent: 427, independent conditional: 0, independent unconditional: 427, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1106, independent: 593, independent conditional: 0, independent unconditional: 593, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 443, unknown conditional: 0, unknown unconditional: 443] , Statistics on independence cache: Total cache size (in pairs): 62, Positive cache size: 55, Positive conditional cache size: 0, Positive unconditional cache size: 55, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L702] 0 pthread_mutex_t mutex; [L703] 0 int data = 0; [L731] 0 pthread_t t1, t2, t3; [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data=0, mutex={3:0}, pthread_create(&t1, 0, thread1, 0)=-2, t1={7:0}, t2={5:0}, t3={6:0}] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}, pthread_create(&t2, 0, thread2, 0)=-1, pthread_mutex_lock(&mutex)=0, t1={7:0}, t2={5:0}, t3={6:0}] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}, pthread_create(&t3, 0, thread3, 0)=0, pthread_mutex_lock(&mutex)=0, t1={7:0}, t2={5:0}, t3={6:0}] [L707] 1 data++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={3:0}] [L709] 1 return 0; [L714] 2 data+=2 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L716] 2 return 0; [L721] COND TRUE 3 data >= 3 [L722] 3 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] - UnprovableResult [Line: 734]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 733]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 119 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.7s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 43 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 43 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 205 IncrementalHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 205 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=4, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 111 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-24 04:29:03,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...