/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.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 00:46:41,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 00:46:41,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 00:46:42,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 00:46:42,089 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 00:46:42,127 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 00:46:42,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 00:46:42,128 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 00:46:42,128 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 00:46:42,129 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 00:46:42,129 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 00:46:42,129 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 00:46:42,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 00:46:42,129 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 00:46:42,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 00:46:42,130 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 00:46:42,130 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 00:46:42,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 00:46:42,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 00:46:42,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 00:46:42,130 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 00:46:42,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 00:46:42,130 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 00:46:42,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 00:46:42,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 00:46:42,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 00:46:42,131 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 00:46:42,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 00:46:42,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:46:42,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 00:46:42,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 00:46:42,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 00:46:42,131 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 00:46:42,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 00:46:42,132 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 00:46:42,132 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 00:46:42,132 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 00:46:42,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 00:46:42,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 00:46:42,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 00:46:42,481 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 00:46:42,481 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 00:46:42,482 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.i [2023-01-28 00:46:43,337 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 00:46:43,535 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 00:46:43,536 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe010_tso.i [2023-01-28 00:46:43,559 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/963de9ae0/b7de30aeee5f405cb489b853f181342c/FLAG506b9ed33 [2023-01-28 00:46:43,576 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/963de9ae0/b7de30aeee5f405cb489b853f181342c [2023-01-28 00:46:43,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 00:46:43,579 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 00:46:43,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 00:46:43,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 00:46:43,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 00:46:43,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:46:43" (1/1) ... [2023-01-28 00:46:43,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e6b70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:46:43, skipping insertion in model container [2023-01-28 00:46:43,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:46:43" (1/1) ... [2023-01-28 00:46:43,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 00:46:43,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 00:46:43,777 WARN L247 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] [2023-01-28 00:46:43,913 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:46:43,921 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 00:46:43,930 WARN L247 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] [2023-01-28 00:46:43,955 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:46:43,977 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:46:43,978 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:46:43,983 INFO L208 MainTranslator]: Completed translation [2023-01-28 00:46:43,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:46:43 WrapperNode [2023-01-28 00:46:43,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 00:46:43,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 00:46:43,984 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 00:46:43,984 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 00:46:43,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:46:43" (1/1) ... [2023-01-28 00:46:44,011 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:46:43" (1/1) ... [2023-01-28 00:46:44,028 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2023-01-28 00:46:44,028 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 00:46:44,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 00:46:44,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 00:46:44,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 00:46:44,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:46:43" (1/1) ... [2023-01-28 00:46:44,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:46:43" (1/1) ... [2023-01-28 00:46:44,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:46:43" (1/1) ... [2023-01-28 00:46:44,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:46:43" (1/1) ... [2023-01-28 00:46:44,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:46:43" (1/1) ... [2023-01-28 00:46:44,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:46:43" (1/1) ... [2023-01-28 00:46:44,053 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:46:43" (1/1) ... [2023-01-28 00:46:44,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:46:43" (1/1) ... [2023-01-28 00:46:44,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 00:46:44,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 00:46:44,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 00:46:44,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 00:46:44,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:46:43" (1/1) ... [2023-01-28 00:46:44,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:46:44,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 00:46:44,082 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) [2023-01-28 00:46:44,141 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 [2023-01-28 00:46:44,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 00:46:44,163 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 00:46:44,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 00:46:44,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 00:46:44,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 00:46:44,163 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-28 00:46:44,163 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-28 00:46:44,163 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-28 00:46:44,163 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-28 00:46:44,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 00:46:44,163 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 00:46:44,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 00:46:44,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 00:46:44,164 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 00:46:44,309 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 00:46:44,311 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 00:46:44,494 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 00:46:44,498 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 00:46:44,498 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 00:46:44,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:46:44 BoogieIcfgContainer [2023-01-28 00:46:44,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 00:46:44,511 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 00:46:44,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 00:46:44,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 00:46:44,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 12:46:43" (1/3) ... [2023-01-28 00:46:44,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f888e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:46:44, skipping insertion in model container [2023-01-28 00:46:44,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:46:43" (2/3) ... [2023-01-28 00:46:44,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f888e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:46:44, skipping insertion in model container [2023-01-28 00:46:44,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:46:44" (3/3) ... [2023-01-28 00:46:44,515 INFO L112 eAbstractionObserver]: Analyzing ICFG safe010_tso.i [2023-01-28 00:46:44,532 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 00:46:44,532 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 00:46:44,532 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 00:46:44,590 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 00:46:44,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 67 transitions, 144 flow [2023-01-28 00:46:44,662 INFO L130 PetriNetUnfolder]: 2/65 cut-off events. [2023-01-28 00:46:44,663 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:46:44,667 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. [2023-01-28 00:46:44,667 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 67 transitions, 144 flow [2023-01-28 00:46:44,670 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 55 transitions, 116 flow [2023-01-28 00:46:44,673 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 00:46:44,682 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 55 transitions, 116 flow [2023-01-28 00:46:44,687 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 55 transitions, 116 flow [2023-01-28 00:46:44,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 55 transitions, 116 flow [2023-01-28 00:46:44,707 INFO L130 PetriNetUnfolder]: 1/55 cut-off events. [2023-01-28 00:46:44,707 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:46:44,707 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. [2023-01-28 00:46:44,708 INFO L119 LiptonReduction]: Number of co-enabled transitions 540 [2023-01-28 00:46:45,939 INFO L134 LiptonReduction]: Checked pairs total: 938 [2023-01-28 00:46:45,939 INFO L136 LiptonReduction]: Total number of compositions: 47 [2023-01-28 00:46:45,953 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 00:46:45,958 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;@356d29c8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 00:46:45,958 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 00:46:45,964 INFO L130 PetriNetUnfolder]: 0/10 cut-off events. [2023-01-28 00:46:45,965 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:46:45,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:46:45,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-01-28 00:46:45,966 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 00:46:45,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:46:45,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1712912524, now seen corresponding path program 1 times [2023-01-28 00:46:45,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:46:45,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159800559] [2023-01-28 00:46:45,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:46:45,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:46:46,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:46:46,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:46:46,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:46:46,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159800559] [2023-01-28 00:46:46,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159800559] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:46:46,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:46:46,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 00:46:46,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296622035] [2023-01-28 00:46:46,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:46:46,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:46:46,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:46:46,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:46:46,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:46:46,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 114 [2023-01-28 00:46:46,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 12 transitions, 30 flow. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:46,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:46:46,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 114 [2023-01-28 00:46:46,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:46:46,401 INFO L130 PetriNetUnfolder]: 40/87 cut-off events. [2023-01-28 00:46:46,401 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 00:46:46,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 87 events. 40/87 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 260 event pairs, 14 based on Foata normal form. 2/89 useless extension candidates. Maximal degree in co-relation 170. Up to 74 conditions per place. [2023-01-28 00:46:46,403 INFO L137 encePairwiseOnDemand]: 110/114 looper letters, 14 selfloop transitions, 3 changer transitions 0/18 dead transitions. [2023-01-28 00:46:46,403 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 18 transitions, 79 flow [2023-01-28 00:46:46,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:46:46,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:46:46,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 192 transitions. [2023-01-28 00:46:46,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5614035087719298 [2023-01-28 00:46:46,415 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 192 transitions. [2023-01-28 00:46:46,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 192 transitions. [2023-01-28 00:46:46,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:46:46,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 192 transitions. [2023-01-28 00:46:46,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:46,426 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) [2023-01-28 00:46:46,426 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) [2023-01-28 00:46:46,427 INFO L175 Difference]: Start difference. First operand has 19 places, 12 transitions, 30 flow. Second operand 3 states and 192 transitions. [2023-01-28 00:46:46,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 18 transitions, 79 flow [2023-01-28 00:46:46,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 76 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 00:46:46,430 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 47 flow [2023-01-28 00:46:46,431 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=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-01-28 00:46:46,433 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 1 predicate places. [2023-01-28 00:46:46,434 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 47 flow [2023-01-28 00:46:46,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:46,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:46:46,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:46:46,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 00:46:46,435 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 00:46:46,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:46:46,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1560681388, now seen corresponding path program 1 times [2023-01-28 00:46:46,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:46:46,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441415357] [2023-01-28 00:46:46,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:46:46,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:46:46,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:46:46,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:46:46,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:46:46,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441415357] [2023-01-28 00:46:46,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441415357] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:46:46,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:46:46,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 00:46:46,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95007955] [2023-01-28 00:46:46,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:46:46,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:46:46,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:46:46,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:46:46,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:46:46,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 114 [2023-01-28 00:46:46,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 47 flow. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:46,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:46:46,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 114 [2023-01-28 00:46:46,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:46:46,632 INFO L130 PetriNetUnfolder]: 32/73 cut-off events. [2023-01-28 00:46:46,632 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-01-28 00:46:46,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 73 events. 32/73 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 212 event pairs, 11 based on Foata normal form. 2/74 useless extension candidates. Maximal degree in co-relation 174. Up to 45 conditions per place. [2023-01-28 00:46:46,634 INFO L137 encePairwiseOnDemand]: 111/114 looper letters, 12 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2023-01-28 00:46:46,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 17 transitions, 84 flow [2023-01-28 00:46:46,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:46:46,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:46:46,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 191 transitions. [2023-01-28 00:46:46,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5584795321637427 [2023-01-28 00:46:46,639 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 191 transitions. [2023-01-28 00:46:46,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 191 transitions. [2023-01-28 00:46:46,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:46:46,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 191 transitions. [2023-01-28 00:46:46,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:46,642 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) [2023-01-28 00:46:46,642 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) [2023-01-28 00:46:46,642 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 47 flow. Second operand 3 states and 191 transitions. [2023-01-28 00:46:46,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 17 transitions, 84 flow [2023-01-28 00:46:46,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 80 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 00:46:46,643 INFO L231 Difference]: Finished difference. Result has 22 places, 14 transitions, 52 flow [2023-01-28 00:46:46,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=22, PETRI_TRANSITIONS=14} [2023-01-28 00:46:46,644 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2023-01-28 00:46:46,645 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 14 transitions, 52 flow [2023-01-28 00:46:46,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:46,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:46:46,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:46:46,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 00:46:46,645 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 00:46:46,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:46:46,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1121780385, now seen corresponding path program 1 times [2023-01-28 00:46:46,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:46:46,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713265900] [2023-01-28 00:46:46,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:46:46,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:46:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:46:46,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:46:46,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:46:46,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713265900] [2023-01-28 00:46:46,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713265900] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:46:46,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:46:46,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:46:46,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926368086] [2023-01-28 00:46:46,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:46:46,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:46:46,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:46:46,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:46:46,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:46:46,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 114 [2023-01-28 00:46:46,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 14 transitions, 52 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) [2023-01-28 00:46:46,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:46:46,806 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 114 [2023-01-28 00:46:46,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:46:46,848 INFO L130 PetriNetUnfolder]: 44/100 cut-off events. [2023-01-28 00:46:46,849 INFO L131 PetriNetUnfolder]: For 63/66 co-relation queries the response was YES. [2023-01-28 00:46:46,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 100 events. 44/100 cut-off events. For 63/66 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 332 event pairs, 13 based on Foata normal form. 13/110 useless extension candidates. Maximal degree in co-relation 242. Up to 34 conditions per place. [2023-01-28 00:46:46,850 INFO L137 encePairwiseOnDemand]: 110/114 looper letters, 13 selfloop transitions, 3 changer transitions 5/22 dead transitions. [2023-01-28 00:46:46,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 22 transitions, 113 flow [2023-01-28 00:46:46,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:46:46,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:46:46,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 249 transitions. [2023-01-28 00:46:46,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5460526315789473 [2023-01-28 00:46:46,851 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 249 transitions. [2023-01-28 00:46:46,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 249 transitions. [2023-01-28 00:46:46,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:46:46,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 249 transitions. [2023-01-28 00:46:46,852 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) [2023-01-28 00:46:46,853 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) [2023-01-28 00:46:46,853 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) [2023-01-28 00:46:46,853 INFO L175 Difference]: Start difference. First operand has 22 places, 14 transitions, 52 flow. Second operand 4 states and 249 transitions. [2023-01-28 00:46:46,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 22 transitions, 113 flow [2023-01-28 00:46:46,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 22 transitions, 107 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 00:46:46,854 INFO L231 Difference]: Finished difference. Result has 25 places, 12 transitions, 54 flow [2023-01-28 00:46:46,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=54, PETRI_PLACES=25, PETRI_TRANSITIONS=12} [2023-01-28 00:46:46,855 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 6 predicate places. [2023-01-28 00:46:46,857 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 12 transitions, 54 flow [2023-01-28 00:46:46,858 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) [2023-01-28 00:46:46,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:46:46,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:46:46,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 00:46:46,858 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 00:46:46,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:46:46,858 INFO L85 PathProgramCache]: Analyzing trace with hash -415476583, now seen corresponding path program 1 times [2023-01-28 00:46:46,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:46:46,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910504936] [2023-01-28 00:46:46,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:46:46,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:46:46,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:46:46,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:46:46,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:46:46,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910504936] [2023-01-28 00:46:46,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910504936] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:46:46,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:46:46,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:46:46,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934153254] [2023-01-28 00:46:46,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:46:46,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:46:46,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:46:46,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:46:46,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:46:46,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 114 [2023-01-28 00:46:46,950 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 12 transitions, 54 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) [2023-01-28 00:46:46,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:46:46,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 114 [2023-01-28 00:46:46,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:46:46,981 INFO L130 PetriNetUnfolder]: 16/48 cut-off events. [2023-01-28 00:46:46,982 INFO L131 PetriNetUnfolder]: For 100/103 co-relation queries the response was YES. [2023-01-28 00:46:46,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 48 events. 16/48 cut-off events. For 100/103 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 113 event pairs, 5 based on Foata normal form. 7/53 useless extension candidates. Maximal degree in co-relation 135. Up to 24 conditions per place. [2023-01-28 00:46:46,984 INFO L137 encePairwiseOnDemand]: 109/114 looper letters, 12 selfloop transitions, 3 changer transitions 8/25 dead transitions. [2023-01-28 00:46:46,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 25 transitions, 142 flow [2023-01-28 00:46:46,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 00:46:46,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 00:46:46,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 305 transitions. [2023-01-28 00:46:46,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5350877192982456 [2023-01-28 00:46:46,985 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 305 transitions. [2023-01-28 00:46:46,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 305 transitions. [2023-01-28 00:46:46,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:46:46,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 305 transitions. [2023-01-28 00:46:46,988 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) [2023-01-28 00:46:46,989 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) [2023-01-28 00:46:46,993 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) [2023-01-28 00:46:46,994 INFO L175 Difference]: Start difference. First operand has 25 places, 12 transitions, 54 flow. Second operand 5 states and 305 transitions. [2023-01-28 00:46:46,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 25 transitions, 142 flow [2023-01-28 00:46:46,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 25 transitions, 121 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-01-28 00:46:46,995 INFO L231 Difference]: Finished difference. Result has 27 places, 14 transitions, 67 flow [2023-01-28 00:46:46,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=67, PETRI_PLACES=27, PETRI_TRANSITIONS=14} [2023-01-28 00:46:46,996 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 8 predicate places. [2023-01-28 00:46:46,996 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 14 transitions, 67 flow [2023-01-28 00:46:46,996 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) [2023-01-28 00:46:46,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:46:46,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:46:46,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 00:46:46,997 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 00:46:46,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:46:46,997 INFO L85 PathProgramCache]: Analyzing trace with hash -37568623, now seen corresponding path program 1 times [2023-01-28 00:46:46,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:46:46,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143102475] [2023-01-28 00:46:46,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:46:46,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:46:47,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:46:47,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:46:47,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:46:47,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143102475] [2023-01-28 00:46:47,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143102475] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:46:47,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:46:47,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:46:47,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312617869] [2023-01-28 00:46:47,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:46:47,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 00:46:47,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:46:47,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 00:46:47,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 00:46:47,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 114 [2023-01-28 00:46:47,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 14 transitions, 67 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) [2023-01-28 00:46:47,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:46:47,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 114 [2023-01-28 00:46:47,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:46:47,153 INFO L130 PetriNetUnfolder]: 8/31 cut-off events. [2023-01-28 00:46:47,153 INFO L131 PetriNetUnfolder]: For 44/47 co-relation queries the response was YES. [2023-01-28 00:46:47,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 31 events. 8/31 cut-off events. For 44/47 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 2 based on Foata normal form. 5/35 useless extension candidates. Maximal degree in co-relation 97. Up to 14 conditions per place. [2023-01-28 00:46:47,154 INFO L137 encePairwiseOnDemand]: 109/114 looper letters, 10 selfloop transitions, 5 changer transitions 4/21 dead transitions. [2023-01-28 00:46:47,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 21 transitions, 135 flow [2023-01-28 00:46:47,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 00:46:47,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 00:46:47,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 357 transitions. [2023-01-28 00:46:47,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5219298245614035 [2023-01-28 00:46:47,155 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 357 transitions. [2023-01-28 00:46:47,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 357 transitions. [2023-01-28 00:46:47,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:46:47,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 357 transitions. [2023-01-28 00:46:47,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 59.5) internal successors, (357), 6 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:47,157 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) [2023-01-28 00:46:47,157 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) [2023-01-28 00:46:47,157 INFO L175 Difference]: Start difference. First operand has 27 places, 14 transitions, 67 flow. Second operand 6 states and 357 transitions. [2023-01-28 00:46:47,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 21 transitions, 135 flow [2023-01-28 00:46:47,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 21 transitions, 120 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-01-28 00:46:47,158 INFO L231 Difference]: Finished difference. Result has 31 places, 14 transitions, 76 flow [2023-01-28 00:46:47,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=76, PETRI_PLACES=31, PETRI_TRANSITIONS=14} [2023-01-28 00:46:47,160 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 12 predicate places. [2023-01-28 00:46:47,160 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 14 transitions, 76 flow [2023-01-28 00:46:47,161 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) [2023-01-28 00:46:47,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:46:47,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:46:47,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 00:46:47,161 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 00:46:47,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:46:47,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1744939018, now seen corresponding path program 1 times [2023-01-28 00:46:47,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:46:47,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067212679] [2023-01-28 00:46:47,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:46:47,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:46:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:46:47,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:46:47,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:46:47,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067212679] [2023-01-28 00:46:47,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067212679] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:46:47,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:46:47,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:46:47,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080974519] [2023-01-28 00:46:47,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:46:47,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:46:47,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:46:47,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:46:47,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:46:47,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 114 [2023-01-28 00:46:47,271 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 14 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:47,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:46:47,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 114 [2023-01-28 00:46:47,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:46:47,284 INFO L130 PetriNetUnfolder]: 7/26 cut-off events. [2023-01-28 00:46:47,284 INFO L131 PetriNetUnfolder]: For 45/46 co-relation queries the response was YES. [2023-01-28 00:46:47,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 26 events. 7/26 cut-off events. For 45/46 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 5 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 87. Up to 18 conditions per place. [2023-01-28 00:46:47,285 INFO L137 encePairwiseOnDemand]: 112/114 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2023-01-28 00:46:47,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 14 transitions, 97 flow [2023-01-28 00:46:47,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:46:47,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:46:47,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 186 transitions. [2023-01-28 00:46:47,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.543859649122807 [2023-01-28 00:46:47,286 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 186 transitions. [2023-01-28 00:46:47,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 186 transitions. [2023-01-28 00:46:47,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:46:47,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 186 transitions. [2023-01-28 00:46:47,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:47,287 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) [2023-01-28 00:46:47,287 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) [2023-01-28 00:46:47,287 INFO L175 Difference]: Start difference. First operand has 31 places, 14 transitions, 76 flow. Second operand 3 states and 186 transitions. [2023-01-28 00:46:47,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 14 transitions, 97 flow [2023-01-28 00:46:47,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 14 transitions, 82 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-01-28 00:46:47,289 INFO L231 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2023-01-28 00:46:47,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2023-01-28 00:46:47,290 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 7 predicate places. [2023-01-28 00:46:47,290 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 0 transitions, 0 flow [2023-01-28 00:46:47,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:46:47,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 00:46:47,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 00:46:47,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 00:46:47,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 00:46:47,295 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-01-28 00:46:47,299 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 00:46:47,299 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 00:46:47,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 12:46:47 BasicIcfg [2023-01-28 00:46:47,301 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 00:46:47,301 INFO L158 Benchmark]: Toolchain (without parser) took 3722.75ms. Allocated memory was 356.5MB in the beginning and 488.6MB in the end (delta: 132.1MB). Free memory was 313.9MB in the beginning and 209.1MB in the end (delta: 104.8MB). Peak memory consumption was 240.9MB. Max. memory is 16.0GB. [2023-01-28 00:46:47,302 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 356.5MB. Free memory is still 305.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 00:46:47,305 INFO L158 Benchmark]: CACSL2BoogieTranslator took 403.99ms. Allocated memory is still 356.5MB. Free memory was 313.9MB in the beginning and 294.2MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 00:46:47,307 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.46ms. Allocated memory is still 356.5MB. Free memory was 294.2MB in the beginning and 292.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 00:46:47,307 INFO L158 Benchmark]: Boogie Preprocessor took 25.79ms. Allocated memory is still 356.5MB. Free memory was 292.1MB in the beginning and 290.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 00:46:47,308 INFO L158 Benchmark]: RCFGBuilder took 453.96ms. Allocated memory is still 356.5MB. Free memory was 290.8MB in the beginning and 277.5MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 00:46:47,308 INFO L158 Benchmark]: TraceAbstraction took 2790.67ms. Allocated memory was 356.5MB in the beginning and 488.6MB in the end (delta: 132.1MB). Free memory was 277.5MB in the beginning and 209.1MB in the end (delta: 68.4MB). Peak memory consumption was 205.2MB. Max. memory is 16.0GB. [2023-01-28 00:46:47,309 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 356.5MB. Free memory is still 305.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 403.99ms. Allocated memory is still 356.5MB. Free memory was 313.9MB in the beginning and 294.2MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 44.46ms. Allocated memory is still 356.5MB. Free memory was 294.2MB in the beginning and 292.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 25.79ms. Allocated memory is still 356.5MB. Free memory was 292.1MB in the beginning and 290.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 453.96ms. Allocated memory is still 356.5MB. Free memory was 290.8MB in the beginning and 277.5MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 2790.67ms. Allocated memory was 356.5MB in the beginning and 488.6MB in the end (delta: 132.1MB). Free memory was 277.5MB in the beginning and 209.1MB in the end (delta: 68.4MB). Peak memory consumption was 205.2MB. Max. memory is 16.0GB. * 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: 2.7s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 146 IncrementalHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 3 mSDtfsCounter, 146 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=5, InterpolantAutomatonStates: 24, 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, 0.7s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 122 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! [2023-01-28 00:46:47,324 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...