/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-wmm/safe010_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 05:34:38,657 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 05:34:38,721 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 05:34:38,726 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 05:34:38,727 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 05:34:38,749 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 05:34:38,750 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 05:34:38,750 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 05:34:38,751 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 05:34:38,753 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 05:34:38,753 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 05:34:38,754 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 05:34:38,754 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 05:34:38,755 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 05:34:38,755 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 05:34:38,755 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 05:34:38,755 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 05:34:38,755 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 05:34:38,755 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 05:34:38,755 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 05:34:38,755 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 05:34:38,756 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 05:34:38,756 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 05:34:38,757 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 05:34:38,757 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 05:34:38,757 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 05:34:38,757 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 05:34:38,757 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 05:34:38,757 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 05:34:38,757 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 05:34:38,758 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 05:34:38,758 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 05:34:38,758 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 05:34:38,758 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 05:34:38,758 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 05:34:38,759 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 05:34:38,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 05:34:39,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 05:34:39,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 05:34:39,010 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 05:34:39,010 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 05:34:39,011 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.i [2023-08-24 05:34:39,988 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 05:34:40,219 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 05:34:40,219 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe010_tso.i [2023-08-24 05:34:40,234 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1acf212bb/ba39f7169efb4bf987ecbd71eae6a555/FLAGd741a80a3 [2023-08-24 05:34:40,245 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1acf212bb/ba39f7169efb4bf987ecbd71eae6a555 [2023-08-24 05:34:40,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 05:34:40,250 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 05:34:40,252 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 05:34:40,252 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 05:34:40,254 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 05:34:40,255 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 05:34:40" (1/1) ... [2023-08-24 05:34:40,256 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@152128c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:40, skipping insertion in model container [2023-08-24 05:34:40,256 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 05:34:40" (1/1) ... [2023-08-24 05:34:40,299 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 05:34:40,430 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-wmm/safe010_tso.i[945,958] [2023-08-24 05:34:40,548 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 05:34:40,555 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 05:34:40,567 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-wmm/safe010_tso.i[945,958] [2023-08-24 05:34:40,579 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 05:34:40,580 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 05:34:40,596 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 05:34:40,618 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 05:34:40,619 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 05:34:40,623 INFO L206 MainTranslator]: Completed translation [2023-08-24 05:34:40,623 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:40 WrapperNode [2023-08-24 05:34:40,623 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 05:34:40,624 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 05:34:40,624 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 05:34:40,624 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 05:34:40,628 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:40" (1/1) ... [2023-08-24 05:34:40,647 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:40" (1/1) ... [2023-08-24 05:34:40,660 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2023-08-24 05:34:40,660 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 05:34:40,660 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 05:34:40,661 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 05:34:40,661 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 05:34:40,665 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:40" (1/1) ... [2023-08-24 05:34:40,665 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:40" (1/1) ... [2023-08-24 05:34:40,667 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:40" (1/1) ... [2023-08-24 05:34:40,667 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:40" (1/1) ... [2023-08-24 05:34:40,675 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:40" (1/1) ... [2023-08-24 05:34:40,676 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:40" (1/1) ... [2023-08-24 05:34:40,677 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:40" (1/1) ... [2023-08-24 05:34:40,678 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:40" (1/1) ... [2023-08-24 05:34:40,679 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 05:34:40,680 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 05:34:40,680 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 05:34:40,680 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 05:34:40,680 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:40" (1/1) ... [2023-08-24 05:34:40,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 05:34:40,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 05:34:40,704 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 05:34:40,705 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 05:34:40,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 05:34:40,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 05:34:40,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 05:34:40,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 05:34:40,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 05:34:40,725 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-24 05:34:40,725 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-24 05:34:40,725 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-24 05:34:40,725 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-24 05:34:40,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 05:34:40,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 05:34:40,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 05:34:40,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 05:34:40,727 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 05:34:40,814 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 05:34:40,815 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 05:34:40,940 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 05:34:40,944 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 05:34:40,944 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 05:34:40,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 05:34:40 BoogieIcfgContainer [2023-08-24 05:34:40,946 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 05:34:40,947 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 05:34:40,948 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 05:34:40,950 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 05:34:40,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 05:34:40" (1/3) ... [2023-08-24 05:34:40,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@123fbba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 05:34:40, skipping insertion in model container [2023-08-24 05:34:40,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:40" (2/3) ... [2023-08-24 05:34:40,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@123fbba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 05:34:40, skipping insertion in model container [2023-08-24 05:34:40,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 05:34:40" (3/3) ... [2023-08-24 05:34:40,952 INFO L112 eAbstractionObserver]: Analyzing ICFG safe010_tso.i [2023-08-24 05:34:40,964 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 05:34:40,964 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 05:34:40,964 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 05:34:41,018 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:34:41,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 67 transitions, 144 flow [2023-08-24 05:34:41,090 INFO L124 PetriNetUnfolderBase]: 2/65 cut-off events. [2023-08-24 05:34:41,090 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:34:41,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2023-08-24 05:34:41,095 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 67 transitions, 144 flow [2023-08-24 05:34:41,099 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 55 transitions, 116 flow [2023-08-24 05:34:41,101 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:34:41,110 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 55 transitions, 116 flow [2023-08-24 05:34:41,113 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 55 transitions, 116 flow [2023-08-24 05:34:41,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 55 transitions, 116 flow [2023-08-24 05:34:41,131 INFO L124 PetriNetUnfolderBase]: 1/55 cut-off events. [2023-08-24 05:34:41,132 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:34:41,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 55 events. 1/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 26 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-08-24 05:34:41,133 INFO L119 LiptonReduction]: Number of co-enabled transitions 540 [2023-08-24 05:34:42,449 INFO L134 LiptonReduction]: Checked pairs total: 938 [2023-08-24 05:34:42,449 INFO L136 LiptonReduction]: Total number of compositions: 47 [2023-08-24 05:34:42,458 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 05:34:42,461 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;@5b9f4eb4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:34:42,462 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-24 05:34:42,464 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:34:42,465 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-24 05:34:42,465 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:34:42,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:34:42,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-24 05:34:42,465 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:34:42,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:34:42,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1712912524, now seen corresponding path program 1 times [2023-08-24 05:34:42,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:34:42,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447629414] [2023-08-24 05:34:42,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:34:42,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:34:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:34:42,756 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 05:34:42,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:34:42,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447629414] [2023-08-24 05:34:42,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447629414] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:34:42,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:34:42,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 05:34:42,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264628835] [2023-08-24 05:34:42,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:34:42,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 05:34:42,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:34:42,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 05:34:42,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 05:34:42,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 114 [2023-08-24 05:34:42,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 12 transitions, 30 flow. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states 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 05:34:42,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:34:42,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 114 [2023-08-24 05:34:42,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:34:42,827 INFO L124 PetriNetUnfolderBase]: 44/106 cut-off events. [2023-08-24 05:34:42,827 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 05:34:42,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 106 events. 44/106 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 410 event pairs, 16 based on Foata normal form. 7/113 useless extension candidates. Maximal degree in co-relation 206. Up to 64 conditions per place. [2023-08-24 05:34:42,830 INFO L140 encePairwiseOnDemand]: 109/114 looper letters, 14 selfloop transitions, 4 changer transitions 0/19 dead transitions. [2023-08-24 05:34:42,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 19 transitions, 83 flow [2023-08-24 05:34:42,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 05:34:42,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 05:34:42,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 187 transitions. [2023-08-24 05:34:42,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5467836257309941 [2023-08-24 05:34:42,838 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 187 transitions. [2023-08-24 05:34:42,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 187 transitions. [2023-08-24 05:34:42,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:34:42,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 187 transitions. [2023-08-24 05:34:42,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states 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 05:34:42,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 05:34:42,845 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 05:34:42,846 INFO L175 Difference]: Start difference. First operand has 19 places, 12 transitions, 30 flow. Second operand 3 states and 187 transitions. [2023-08-24 05:34:42,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 19 transitions, 83 flow [2023-08-24 05:34:42,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 19 transitions, 80 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 05:34:42,849 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 50 flow [2023-08-24 05:34:42,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-08-24 05:34:42,852 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 1 predicate places. [2023-08-24 05:34:42,852 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 50 flow [2023-08-24 05:34:42,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states 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 05:34:42,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:34:42,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:34:42,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 05:34:42,853 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:34:42,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:34:42,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1560681388, now seen corresponding path program 1 times [2023-08-24 05:34:42,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:34:42,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995474989] [2023-08-24 05:34:42,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:34:42,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:34:42,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:34:42,929 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 05:34:42,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:34:42,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995474989] [2023-08-24 05:34:42,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995474989] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:34:42,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:34:42,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:34:42,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7275265] [2023-08-24 05:34:42,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:34:42,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:34:42,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:34:42,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:34:42,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:34:42,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 114 [2023-08-24 05:34:42,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 50 flow. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 0 states have call successors, (0), 0 states 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 05:34:42,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:34:42,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 114 [2023-08-24 05:34:42,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:34:42,956 INFO L124 PetriNetUnfolderBase]: 41/99 cut-off events. [2023-08-24 05:34:42,957 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-08-24 05:34:42,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 99 events. 41/99 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 360 event pairs, 10 based on Foata normal form. 2/100 useless extension candidates. Maximal degree in co-relation 241. Up to 45 conditions per place. [2023-08-24 05:34:42,957 INFO L140 encePairwiseOnDemand]: 109/114 looper letters, 14 selfloop transitions, 5 changer transitions 0/20 dead transitions. [2023-08-24 05:34:42,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 20 transitions, 103 flow [2023-08-24 05:34:42,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 05:34:42,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 05:34:42,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 243 transitions. [2023-08-24 05:34:42,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5328947368421053 [2023-08-24 05:34:42,959 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 243 transitions. [2023-08-24 05:34:42,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 243 transitions. [2023-08-24 05:34:42,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:34:42,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 243 transitions. [2023-08-24 05:34:42,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states 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 05:34:42,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states 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 05:34:42,962 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states 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 05:34:42,962 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 50 flow. Second operand 4 states and 243 transitions. [2023-08-24 05:34:42,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 20 transitions, 103 flow [2023-08-24 05:34:42,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 20 transitions, 98 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 05:34:42,963 INFO L231 Difference]: Finished difference. Result has 24 places, 15 transitions, 69 flow [2023-08-24 05:34:42,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=69, PETRI_PLACES=24, PETRI_TRANSITIONS=15} [2023-08-24 05:34:42,964 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 5 predicate places. [2023-08-24 05:34:42,964 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 15 transitions, 69 flow [2023-08-24 05:34:42,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 0 states have call successors, (0), 0 states 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 05:34:42,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:34:42,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:34:42,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 05:34:42,964 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:34:42,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:34:42,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1560681605, now seen corresponding path program 1 times [2023-08-24 05:34:42,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:34:42,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776204514] [2023-08-24 05:34:42,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:34:42,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:34:42,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:34:43,022 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 05:34:43,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:34:43,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776204514] [2023-08-24 05:34:43,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776204514] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:34:43,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:34:43,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:34:43,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335129776] [2023-08-24 05:34:43,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:34:43,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:34:43,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:34:43,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:34:43,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:34:43,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 114 [2023-08-24 05:34:43,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 15 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 0 states have call successors, (0), 0 states 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 05:34:43,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:34:43,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 114 [2023-08-24 05:34:43,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:34:43,059 INFO L124 PetriNetUnfolderBase]: 38/95 cut-off events. [2023-08-24 05:34:43,059 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-08-24 05:34:43,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 95 events. 38/95 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 332 event pairs, 6 based on Foata normal form. 1/96 useless extension candidates. Maximal degree in co-relation 252. Up to 52 conditions per place. [2023-08-24 05:34:43,060 INFO L140 encePairwiseOnDemand]: 110/114 looper letters, 15 selfloop transitions, 6 changer transitions 0/22 dead transitions. [2023-08-24 05:34:43,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 22 transitions, 132 flow [2023-08-24 05:34:43,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 05:34:43,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 05:34:43,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 245 transitions. [2023-08-24 05:34:43,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372807017543859 [2023-08-24 05:34:43,062 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 245 transitions. [2023-08-24 05:34:43,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 245 transitions. [2023-08-24 05:34:43,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:34:43,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 245 transitions. [2023-08-24 05:34:43,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 0 states have call successors, (0), 0 states 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 05:34:43,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states 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 05:34:43,064 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states 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 05:34:43,064 INFO L175 Difference]: Start difference. First operand has 24 places, 15 transitions, 69 flow. Second operand 4 states and 245 transitions. [2023-08-24 05:34:43,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 22 transitions, 132 flow [2023-08-24 05:34:43,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 22 transitions, 123 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 05:34:43,065 INFO L231 Difference]: Finished difference. Result has 26 places, 16 transitions, 85 flow [2023-08-24 05:34:43,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=85, PETRI_PLACES=26, PETRI_TRANSITIONS=16} [2023-08-24 05:34:43,066 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 7 predicate places. [2023-08-24 05:34:43,066 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 16 transitions, 85 flow [2023-08-24 05:34:43,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 0 states have call successors, (0), 0 states 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 05:34:43,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:34:43,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:34:43,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 05:34:43,067 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:34:43,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:34:43,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1136483685, now seen corresponding path program 1 times [2023-08-24 05:34:43,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:34:43,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317418954] [2023-08-24 05:34:43,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:34:43,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:34:43,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:34:43,124 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 05:34:43,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:34:43,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317418954] [2023-08-24 05:34:43,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317418954] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:34:43,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:34:43,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:34:43,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678668058] [2023-08-24 05:34:43,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:34:43,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:34:43,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:34:43,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:34:43,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:34:43,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 114 [2023-08-24 05:34:43,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 85 flow. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states 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 05:34:43,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:34:43,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 114 [2023-08-24 05:34:43,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:34:43,156 INFO L124 PetriNetUnfolderBase]: 45/112 cut-off events. [2023-08-24 05:34:43,156 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2023-08-24 05:34:43,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 112 events. 45/112 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 413 event pairs, 11 based on Foata normal form. 9/121 useless extension candidates. Maximal degree in co-relation 306. Up to 46 conditions per place. [2023-08-24 05:34:43,157 INFO L140 encePairwiseOnDemand]: 110/114 looper letters, 13 selfloop transitions, 3 changer transitions 7/24 dead transitions. [2023-08-24 05:34:43,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 24 transitions, 150 flow [2023-08-24 05:34:43,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 05:34:43,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 05:34:43,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 249 transitions. [2023-08-24 05:34:43,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5460526315789473 [2023-08-24 05:34:43,158 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 249 transitions. [2023-08-24 05:34:43,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 249 transitions. [2023-08-24 05:34:43,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:34:43,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 249 transitions. [2023-08-24 05:34:43,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:34:43,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states 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 05:34:43,160 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states 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 05:34:43,160 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 85 flow. Second operand 4 states and 249 transitions. [2023-08-24 05:34:43,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 24 transitions, 150 flow [2023-08-24 05:34:43,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 24 transitions, 142 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-24 05:34:43,161 INFO L231 Difference]: Finished difference. Result has 29 places, 12 transitions, 66 flow [2023-08-24 05:34:43,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=66, PETRI_PLACES=29, PETRI_TRANSITIONS=12} [2023-08-24 05:34:43,162 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 10 predicate places. [2023-08-24 05:34:43,162 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 12 transitions, 66 flow [2023-08-24 05:34:43,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states 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 05:34:43,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:34:43,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:34:43,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 05:34:43,163 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:34:43,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:34:43,163 INFO L85 PathProgramCache]: Analyzing trace with hash -415476583, now seen corresponding path program 1 times [2023-08-24 05:34:43,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:34:43,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459998610] [2023-08-24 05:34:43,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:34:43,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:34:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:34:43,254 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 05:34:43,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:34:43,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459998610] [2023-08-24 05:34:43,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459998610] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:34:43,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:34:43,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:34:43,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507819428] [2023-08-24 05:34:43,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:34:43,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:34:43,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:34:43,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:34:43,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:34:43,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 114 [2023-08-24 05:34:43,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 12 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states 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 05:34:43,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:34:43,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 114 [2023-08-24 05:34:43,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:34:43,295 INFO L124 PetriNetUnfolderBase]: 13/44 cut-off events. [2023-08-24 05:34:43,295 INFO L125 PetriNetUnfolderBase]: For 64/65 co-relation queries the response was YES. [2023-08-24 05:34:43,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 44 events. 13/44 cut-off events. For 64/65 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 100 event pairs, 3 based on Foata normal form. 2/45 useless extension candidates. Maximal degree in co-relation 131. Up to 20 conditions per place. [2023-08-24 05:34:43,298 INFO L140 encePairwiseOnDemand]: 109/114 looper letters, 11 selfloop transitions, 2 changer transitions 10/25 dead transitions. [2023-08-24 05:34:43,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 25 transitions, 163 flow [2023-08-24 05:34:43,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 05:34:43,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 05:34:43,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 305 transitions. [2023-08-24 05:34:43,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5350877192982456 [2023-08-24 05:34:43,299 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 305 transitions. [2023-08-24 05:34:43,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 305 transitions. [2023-08-24 05:34:43,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:34:43,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 305 transitions. [2023-08-24 05:34:43,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states 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 05:34:43,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states 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 05:34:43,301 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states 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 05:34:43,301 INFO L175 Difference]: Start difference. First operand has 29 places, 12 transitions, 66 flow. Second operand 5 states and 305 transitions. [2023-08-24 05:34:43,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 25 transitions, 163 flow [2023-08-24 05:34:43,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 25 transitions, 121 flow, removed 7 selfloop flow, removed 8 redundant places. [2023-08-24 05:34:43,303 INFO L231 Difference]: Finished difference. Result has 28 places, 12 transitions, 56 flow [2023-08-24 05:34:43,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=56, PETRI_PLACES=28, PETRI_TRANSITIONS=12} [2023-08-24 05:34:43,305 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 9 predicate places. [2023-08-24 05:34:43,305 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 12 transitions, 56 flow [2023-08-24 05:34:43,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states 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 05:34:43,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:34:43,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:34:43,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 05:34:43,306 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:34:43,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:34:43,306 INFO L85 PathProgramCache]: Analyzing trace with hash -397741813, now seen corresponding path program 1 times [2023-08-24 05:34:43,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:34:43,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242669608] [2023-08-24 05:34:43,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:34:43,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:34:43,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:34:43,407 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 05:34:43,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:34:43,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242669608] [2023-08-24 05:34:43,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242669608] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:34:43,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:34:43,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 05:34:43,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675104740] [2023-08-24 05:34:43,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:34:43,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 05:34:43,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:34:43,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 05:34:43,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 05:34:43,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 114 [2023-08-24 05:34:43,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 12 transitions, 56 flow. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states 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 05:34:43,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:34:43,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 114 [2023-08-24 05:34:43,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:34:43,434 INFO L124 PetriNetUnfolderBase]: 6/26 cut-off events. [2023-08-24 05:34:43,434 INFO L125 PetriNetUnfolderBase]: For 18/20 co-relation queries the response was YES. [2023-08-24 05:34:43,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 26 events. 6/26 cut-off events. For 18/20 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 36 event pairs, 2 based on Foata normal form. 2/27 useless extension candidates. Maximal degree in co-relation 82. Up to 10 conditions per place. [2023-08-24 05:34:43,435 INFO L140 encePairwiseOnDemand]: 109/114 looper letters, 0 selfloop transitions, 0 changer transitions 17/17 dead transitions. [2023-08-24 05:34:43,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 17 transitions, 100 flow [2023-08-24 05:34:43,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 05:34:43,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 05:34:43,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 352 transitions. [2023-08-24 05:34:43,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5146198830409356 [2023-08-24 05:34:43,436 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 352 transitions. [2023-08-24 05:34:43,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 352 transitions. [2023-08-24 05:34:43,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:34:43,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 352 transitions. [2023-08-24 05:34:43,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 58.666666666666664) internal successors, (352), 6 states have internal predecessors, (352), 0 states have call successors, (0), 0 states 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 05:34:43,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 0 states have call successors, (0), 0 states 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 05:34:43,438 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 0 states have call successors, (0), 0 states 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 05:34:43,438 INFO L175 Difference]: Start difference. First operand has 28 places, 12 transitions, 56 flow. Second operand 6 states and 352 transitions. [2023-08-24 05:34:43,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 17 transitions, 100 flow [2023-08-24 05:34:43,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 17 transitions, 85 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-24 05:34:43,440 INFO L231 Difference]: Finished difference. Result has 25 places, 0 transitions, 0 flow [2023-08-24 05:34:43,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=35, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=25, PETRI_TRANSITIONS=0} [2023-08-24 05:34:43,442 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 6 predicate places. [2023-08-24 05:34:43,442 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 0 transitions, 0 flow [2023-08-24 05:34:43,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states 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 05:34:43,445 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-24 05:34:43,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-24 05:34:43,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-24 05:34:43,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 05:34:43,446 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-24 05:34:43,448 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 05:34:43,449 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 05:34:43,451 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 05:34:43 BasicIcfg [2023-08-24 05:34:43,451 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 05:34:43,453 INFO L158 Benchmark]: Toolchain (without parser) took 3201.78ms. Allocated memory was 364.9MB in the beginning and 438.3MB in the end (delta: 73.4MB). Free memory was 340.9MB in the beginning and 320.8MB in the end (delta: 20.1MB). Peak memory consumption was 95.3MB. Max. memory is 16.0GB. [2023-08-24 05:34:43,453 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 364.9MB. Free memory was 342.8MB in the beginning and 342.7MB in the end (delta: 77.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 05:34:43,458 INFO L158 Benchmark]: CACSL2BoogieTranslator took 371.86ms. Allocated memory is still 364.9MB. Free memory was 340.6MB in the beginning and 320.6MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-24 05:34:43,458 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.99ms. Allocated memory is still 364.9MB. Free memory was 320.6MB in the beginning and 318.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 05:34:43,458 INFO L158 Benchmark]: Boogie Preprocessor took 18.92ms. Allocated memory is still 364.9MB. Free memory was 318.5MB in the beginning and 317.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 05:34:43,458 INFO L158 Benchmark]: RCFGBuilder took 265.98ms. Allocated memory is still 364.9MB. Free memory was 317.1MB in the beginning and 304.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 05:34:43,458 INFO L158 Benchmark]: TraceAbstraction took 2503.79ms. Allocated memory was 364.9MB in the beginning and 438.3MB in the end (delta: 73.4MB). Free memory was 303.8MB in the beginning and 320.8MB in the end (delta: -17.0MB). Peak memory consumption was 57.6MB. Max. memory is 16.0GB. [2023-08-24 05:34:43,459 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 364.9MB. Free memory was 342.8MB in the beginning and 342.7MB in the end (delta: 77.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 371.86ms. Allocated memory is still 364.9MB. Free memory was 340.6MB in the beginning and 320.6MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 35.99ms. Allocated memory is still 364.9MB. Free memory was 320.6MB in the beginning and 318.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 18.92ms. Allocated memory is still 364.9MB. Free memory was 318.5MB in the beginning and 317.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 265.98ms. Allocated memory is still 364.9MB. Free memory was 317.1MB in the beginning and 304.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 2503.79ms. Allocated memory was 364.9MB in the beginning and 438.3MB in the end (delta: 73.4MB). Free memory was 303.8MB in the beginning and 320.8MB in the end (delta: -17.0MB). Peak memory consumption was 57.6MB. 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: 1.3s, 61 PlacesBefore, 19 PlacesAfterwards, 55 TransitionsBefore, 12 TransitionsAfterwards, 540 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 47 TotalNumberOfCompositions, 938 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 561, independent: 506, independent conditional: 0, independent unconditional: 506, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 299, independent: 282, independent conditional: 0, independent unconditional: 282, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 561, independent: 224, independent conditional: 0, independent unconditional: 224, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 299, unknown conditional: 0, unknown unconditional: 299] , Statistics on independence cache: Total cache size (in pairs): 19, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, 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 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 82 locations, 3 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: 2.4s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 39 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 39 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 148 IncrementalHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 4 mSDtfsCounter, 148 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=3, InterpolantAutomatonStates: 26, 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, 0.5s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 171 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-24 05:34:43,471 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...