/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/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 07:02:23,274 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 07:02:23,353 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 07:02:23,358 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 07:02:23,359 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 07:02:23,387 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 07:02:23,388 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 07:02:23,388 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 07:02:23,388 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 07:02:23,389 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 07:02:23,389 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 07:02:23,390 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 07:02:23,390 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 07:02:23,390 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 07:02:23,391 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 07:02:23,391 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 07:02:23,391 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 07:02:23,392 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 07:02:23,392 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 07:02:23,392 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 07:02:23,399 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 07:02:23,401 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 07:02:23,402 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 07:02:23,402 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 07:02:23,404 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 07:02:23,404 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 07:02:23,404 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 07:02:23,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 07:02:23,404 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 07:02:23,405 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 07:02:23,406 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 07:02:23,406 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 07:02:23,406 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 07:02:23,406 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 07:02:23,406 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 07:02:23,407 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 07:02:23,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 07:02:23,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 07:02:23,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 07:02:23,798 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 07:02:23,798 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 07:02:23,799 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2023-08-24 07:02:25,079 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 07:02:25,349 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 07:02:25,350 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2023-08-24 07:02:25,373 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0207b996a/5a9b5fc7bdbb41578d8221016e886c69/FLAG979c06fab [2023-08-24 07:02:25,389 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0207b996a/5a9b5fc7bdbb41578d8221016e886c69 [2023-08-24 07:02:25,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 07:02:25,396 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 07:02:25,400 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 07:02:25,400 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 07:02:25,403 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 07:02:25,404 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 07:02:25" (1/1) ... [2023-08-24 07:02:25,406 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b889681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:02:25, skipping insertion in model container [2023-08-24 07:02:25,406 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 07:02:25" (1/1) ... [2023-08-24 07:02:25,459 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 07:02:25,626 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i[1120,1133] [2023-08-24 07:02:25,804 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 07:02:25,820 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 07:02:25,833 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i[1120,1133] [2023-08-24 07:02:25,848 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [236] [2023-08-24 07:02:25,850 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [237] [2023-08-24 07:02:25,876 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 07:02:25,911 INFO L206 MainTranslator]: Completed translation [2023-08-24 07:02:25,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:02:25 WrapperNode [2023-08-24 07:02:25,914 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 07:02:25,915 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 07:02:25,915 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 07:02:25,915 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 07:02:25,921 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:02:25" (1/1) ... [2023-08-24 07:02:25,951 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:02:25" (1/1) ... [2023-08-24 07:02:25,983 INFO L138 Inliner]: procedures = 165, calls = 42, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 144 [2023-08-24 07:02:25,983 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 07:02:25,984 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 07:02:25,984 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 07:02:25,984 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 07:02:25,992 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:02:25" (1/1) ... [2023-08-24 07:02:25,992 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:02:25" (1/1) ... [2023-08-24 07:02:26,005 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:02:25" (1/1) ... [2023-08-24 07:02:26,005 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:02:25" (1/1) ... [2023-08-24 07:02:26,010 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:02:25" (1/1) ... [2023-08-24 07:02:26,012 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:02:25" (1/1) ... [2023-08-24 07:02:26,014 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:02:25" (1/1) ... [2023-08-24 07:02:26,015 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:02:25" (1/1) ... [2023-08-24 07:02:26,018 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 07:02:26,025 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 07:02:26,025 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 07:02:26,025 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 07:02:26,026 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:02:25" (1/1) ... [2023-08-24 07:02:26,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 07:02:26,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:02:26,054 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 07:02:26,068 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 07:02:26,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 07:02:26,090 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 07:02:26,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 07:02:26,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 07:02:26,090 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-24 07:02:26,090 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-24 07:02:26,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 07:02:26,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 07:02:26,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 07:02:26,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 07:02:26,092 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 07:02:26,227 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 07:02:26,229 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 07:02:26,458 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 07:02:26,466 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 07:02:26,467 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 07:02:26,469 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 07:02:26 BoogieIcfgContainer [2023-08-24 07:02:26,469 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 07:02:26,471 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 07:02:26,471 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 07:02:26,478 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 07:02:26,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 07:02:25" (1/3) ... [2023-08-24 07:02:26,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f8fda53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 07:02:26, skipping insertion in model container [2023-08-24 07:02:26,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:02:25" (2/3) ... [2023-08-24 07:02:26,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f8fda53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 07:02:26, skipping insertion in model container [2023-08-24 07:02:26,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 07:02:26" (3/3) ... [2023-08-24 07:02:26,480 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2023-08-24 07:02:26,495 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 07:02:26,495 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-24 07:02:26,495 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 07:02:26,588 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 07:02:26,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 167 transitions, 339 flow [2023-08-24 07:02:26,676 INFO L124 PetriNetUnfolderBase]: 8/169 cut-off events. [2023-08-24 07:02:26,676 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 07:02:26,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 169 events. 8/169 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 151 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 122. Up to 2 conditions per place. [2023-08-24 07:02:26,685 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 167 transitions, 339 flow [2023-08-24 07:02:26,689 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 165 transitions, 333 flow [2023-08-24 07:02:26,691 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 07:02:26,698 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 165 transitions, 333 flow [2023-08-24 07:02:26,700 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 165 transitions, 333 flow [2023-08-24 07:02:26,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 165 transitions, 333 flow [2023-08-24 07:02:26,738 INFO L124 PetriNetUnfolderBase]: 8/165 cut-off events. [2023-08-24 07:02:26,738 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 07:02:26,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 165 events. 8/165 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 143 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 122. Up to 2 conditions per place. [2023-08-24 07:02:26,744 INFO L119 LiptonReduction]: Number of co-enabled transitions 6992 [2023-08-24 07:02:31,590 INFO L134 LiptonReduction]: Checked pairs total: 12254 [2023-08-24 07:02:31,591 INFO L136 LiptonReduction]: Total number of compositions: 170 [2023-08-24 07:02:31,604 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 07:02:31,610 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;@664b66f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 07:02:31,610 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-24 07:02:31,614 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 07:02:31,614 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-24 07:02:31,614 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 07:02:31,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:02:31,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-24 07:02:31,615 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 07:02:31,620 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:02:31,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1951296255, now seen corresponding path program 1 times [2023-08-24 07:02:31,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:02:31,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396437058] [2023-08-24 07:02:31,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:02:31,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:02:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:02:32,034 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 07:02:32,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:02:32,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396437058] [2023-08-24 07:02:32,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396437058] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:02:32,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:02:32,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 07:02:32,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532351016] [2023-08-24 07:02:32,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:02:32,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 07:02:32,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:02:32,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 07:02:32,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 07:02:32,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 337 [2023-08-24 07:02:32,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 63 flow. Second operand has 4 states, 4 states have (on average 143.5) internal successors, (574), 4 states have internal predecessors, (574), 0 states have call successors, (0), 0 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 07:02:32,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:02:32,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 337 [2023-08-24 07:02:32,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:02:32,249 INFO L124 PetriNetUnfolderBase]: 119/312 cut-off events. [2023-08-24 07:02:32,249 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 07:02:32,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 573 conditions, 312 events. 119/312 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1271 event pairs, 10 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 564. Up to 169 conditions per place. [2023-08-24 07:02:32,257 INFO L140 encePairwiseOnDemand]: 331/337 looper letters, 34 selfloop transitions, 5 changer transitions 11/55 dead transitions. [2023-08-24 07:02:32,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 55 transitions, 213 flow [2023-08-24 07:02:32,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 07:02:32,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 07:02:32,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 765 transitions. [2023-08-24 07:02:32,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540059347181009 [2023-08-24 07:02:32,283 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 765 transitions. [2023-08-24 07:02:32,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 765 transitions. [2023-08-24 07:02:32,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:02:32,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 765 transitions. [2023-08-24 07:02:32,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 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 07:02:32,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 337.0) internal successors, (2022), 6 states have internal predecessors, (2022), 0 states have call successors, (0), 0 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 07:02:32,304 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 337.0) internal successors, (2022), 6 states have internal predecessors, (2022), 0 states have call successors, (0), 0 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 07:02:32,305 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 63 flow. Second operand 5 states and 765 transitions. [2023-08-24 07:02:32,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 55 transitions, 213 flow [2023-08-24 07:02:32,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 55 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 07:02:32,310 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 83 flow [2023-08-24 07:02:32,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=83, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2023-08-24 07:02:32,317 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 6 predicate places. [2023-08-24 07:02:32,317 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 83 flow [2023-08-24 07:02:32,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.5) internal successors, (574), 4 states have internal predecessors, (574), 0 states have call successors, (0), 0 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 07:02:32,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:02:32,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:02:32,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 07:02:32,319 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 07:02:32,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:02:32,321 INFO L85 PathProgramCache]: Analyzing trace with hash 360643089, now seen corresponding path program 1 times [2023-08-24 07:02:32,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:02:32,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246460141] [2023-08-24 07:02:32,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:02:32,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:02:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:02:32,505 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 07:02:32,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:02:32,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246460141] [2023-08-24 07:02:32,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246460141] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:02:32,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:02:32,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 07:02:32,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895927482] [2023-08-24 07:02:32,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:02:32,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 07:02:32,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:02:32,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 07:02:32,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 07:02:32,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 337 [2023-08-24 07:02:32,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 83 flow. Second operand has 5 states, 5 states have (on average 142.4) internal successors, (712), 5 states have internal predecessors, (712), 0 states have call successors, (0), 0 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 07:02:32,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:02:32,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 337 [2023-08-24 07:02:32,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:02:32,683 INFO L124 PetriNetUnfolderBase]: 94/258 cut-off events. [2023-08-24 07:02:32,683 INFO L125 PetriNetUnfolderBase]: For 53/55 co-relation queries the response was YES. [2023-08-24 07:02:32,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 551 conditions, 258 events. 94/258 cut-off events. For 53/55 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1074 event pairs, 32 based on Foata normal form. 2/249 useless extension candidates. Maximal degree in co-relation 538. Up to 120 conditions per place. [2023-08-24 07:02:32,685 INFO L140 encePairwiseOnDemand]: 331/337 looper letters, 40 selfloop transitions, 9 changer transitions 0/54 dead transitions. [2023-08-24 07:02:32,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 54 transitions, 240 flow [2023-08-24 07:02:32,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 07:02:32,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 07:02:32,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1180 transitions. [2023-08-24 07:02:32,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43768545994065283 [2023-08-24 07:02:32,690 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1180 transitions. [2023-08-24 07:02:32,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1180 transitions. [2023-08-24 07:02:32,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:02:32,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1180 transitions. [2023-08-24 07:02:32,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 147.5) internal successors, (1180), 8 states have internal predecessors, (1180), 0 states have call successors, (0), 0 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 07:02:32,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 337.0) internal successors, (3033), 9 states have internal predecessors, (3033), 0 states have call successors, (0), 0 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 07:02:32,701 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 337.0) internal successors, (3033), 9 states have internal predecessors, (3033), 0 states have call successors, (0), 0 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 07:02:32,701 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 83 flow. Second operand 8 states and 1180 transitions. [2023-08-24 07:02:32,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 54 transitions, 240 flow [2023-08-24 07:02:32,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 54 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 07:02:32,704 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 126 flow [2023-08-24 07:02:32,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=126, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2023-08-24 07:02:32,705 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 12 predicate places. [2023-08-24 07:02:32,705 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 126 flow [2023-08-24 07:02:32,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 142.4) internal successors, (712), 5 states have internal predecessors, (712), 0 states have call successors, (0), 0 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 07:02:32,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:02:32,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:02:32,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 07:02:32,707 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 07:02:32,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:02:32,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1681636440, now seen corresponding path program 1 times [2023-08-24 07:02:32,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:02:32,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257093116] [2023-08-24 07:02:32,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:02:32,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:02:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:02:32,787 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 07:02:32,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:02:32,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257093116] [2023-08-24 07:02:32,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257093116] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:02:32,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:02:32,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 07:02:32,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892527109] [2023-08-24 07:02:32,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:02:32,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 07:02:32,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:02:32,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 07:02:32,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 07:02:32,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 337 [2023-08-24 07:02:32,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 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 07:02:32,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:02:32,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 337 [2023-08-24 07:02:32,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:02:32,912 INFO L124 PetriNetUnfolderBase]: 102/265 cut-off events. [2023-08-24 07:02:32,912 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-24 07:02:32,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 643 conditions, 265 events. 102/265 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1036 event pairs, 37 based on Foata normal form. 15/280 useless extension candidates. Maximal degree in co-relation 626. Up to 151 conditions per place. [2023-08-24 07:02:32,917 INFO L140 encePairwiseOnDemand]: 329/337 looper letters, 34 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2023-08-24 07:02:32,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 233 flow [2023-08-24 07:02:32,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 07:02:32,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 07:02:32,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 449 transitions. [2023-08-24 07:02:32,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44411473788328387 [2023-08-24 07:02:32,919 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 449 transitions. [2023-08-24 07:02:32,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 449 transitions. [2023-08-24 07:02:32,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:02:32,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 449 transitions. [2023-08-24 07:02:32,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 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 07:02:32,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 337.0) internal successors, (1348), 4 states have internal predecessors, (1348), 0 states have call successors, (0), 0 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 07:02:32,924 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 337.0) internal successors, (1348), 4 states have internal predecessors, (1348), 0 states have call successors, (0), 0 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 07:02:32,924 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 126 flow. Second operand 3 states and 449 transitions. [2023-08-24 07:02:32,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 233 flow [2023-08-24 07:02:32,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 43 transitions, 211 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-24 07:02:32,928 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 127 flow [2023-08-24 07:02:32,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2023-08-24 07:02:32,930 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2023-08-24 07:02:32,930 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 127 flow [2023-08-24 07:02:32,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 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 07:02:32,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:02:32,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:02:32,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 07:02:32,932 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 07:02:32,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:02:32,933 INFO L85 PathProgramCache]: Analyzing trace with hash -2091082340, now seen corresponding path program 1 times [2023-08-24 07:02:32,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:02:32,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153479818] [2023-08-24 07:02:32,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:02:32,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:02:32,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:02:33,144 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 07:02:33,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:02:33,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153479818] [2023-08-24 07:02:33,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153479818] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:02:33,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:02:33,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 07:02:33,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511628058] [2023-08-24 07:02:33,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:02:33,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 07:02:33,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:02:33,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 07:02:33,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-24 07:02:33,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 337 [2023-08-24 07:02:33,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 127 flow. Second operand has 6 states, 6 states have (on average 136.66666666666666) internal successors, (820), 6 states have internal predecessors, (820), 0 states have call successors, (0), 0 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 07:02:33,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:02:33,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 337 [2023-08-24 07:02:33,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:02:33,300 INFO L124 PetriNetUnfolderBase]: 63/212 cut-off events. [2023-08-24 07:02:33,300 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2023-08-24 07:02:33,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 563 conditions, 212 events. 63/212 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 919 event pairs, 31 based on Foata normal form. 10/217 useless extension candidates. Maximal degree in co-relation 547. Up to 110 conditions per place. [2023-08-24 07:02:33,302 INFO L140 encePairwiseOnDemand]: 329/337 looper letters, 41 selfloop transitions, 10 changer transitions 1/57 dead transitions. [2023-08-24 07:02:33,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 57 transitions, 311 flow [2023-08-24 07:02:33,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 07:02:33,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 07:02:33,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1132 transitions. [2023-08-24 07:02:33,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4198813056379822 [2023-08-24 07:02:33,306 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1132 transitions. [2023-08-24 07:02:33,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1132 transitions. [2023-08-24 07:02:33,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:02:33,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1132 transitions. [2023-08-24 07:02:33,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 141.5) internal successors, (1132), 8 states have internal predecessors, (1132), 0 states have call successors, (0), 0 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 07:02:33,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 337.0) internal successors, (3033), 9 states have internal predecessors, (3033), 0 states have call successors, (0), 0 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 07:02:33,317 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 337.0) internal successors, (3033), 9 states have internal predecessors, (3033), 0 states have call successors, (0), 0 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 07:02:33,317 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 127 flow. Second operand 8 states and 1132 transitions. [2023-08-24 07:02:33,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 57 transitions, 311 flow [2023-08-24 07:02:33,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 57 transitions, 297 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 07:02:33,322 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 178 flow [2023-08-24 07:02:33,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=178, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2023-08-24 07:02:33,324 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 18 predicate places. [2023-08-24 07:02:33,324 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 178 flow [2023-08-24 07:02:33,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.66666666666666) internal successors, (820), 6 states have internal predecessors, (820), 0 states have call successors, (0), 0 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 07:02:33,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:02:33,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:02:33,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 07:02:33,325 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 07:02:33,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:02:33,326 INFO L85 PathProgramCache]: Analyzing trace with hash 430968033, now seen corresponding path program 1 times [2023-08-24 07:02:33,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:02:33,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373735665] [2023-08-24 07:02:33,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:02:33,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:02:33,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:02:33,535 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 07:02:33,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:02:33,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373735665] [2023-08-24 07:02:33,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373735665] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:02:33,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:02:33,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 07:02:33,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974830370] [2023-08-24 07:02:33,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:02:33,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 07:02:33,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:02:33,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 07:02:33,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 07:02:33,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 337 [2023-08-24 07:02:33,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 138.2) internal successors, (691), 5 states have internal predecessors, (691), 0 states have call successors, (0), 0 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 07:02:33,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:02:33,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 337 [2023-08-24 07:02:33,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:02:33,660 INFO L124 PetriNetUnfolderBase]: 62/211 cut-off events. [2023-08-24 07:02:33,662 INFO L125 PetriNetUnfolderBase]: For 140/142 co-relation queries the response was YES. [2023-08-24 07:02:33,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 613 conditions, 211 events. 62/211 cut-off events. For 140/142 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 917 event pairs, 29 based on Foata normal form. 1/209 useless extension candidates. Maximal degree in co-relation 593. Up to 116 conditions per place. [2023-08-24 07:02:33,665 INFO L140 encePairwiseOnDemand]: 332/337 looper letters, 39 selfloop transitions, 8 changer transitions 0/54 dead transitions. [2023-08-24 07:02:33,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 54 transitions, 335 flow [2023-08-24 07:02:33,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 07:02:33,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 07:02:33,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 721 transitions. [2023-08-24 07:02:33,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42789317507418395 [2023-08-24 07:02:33,672 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 721 transitions. [2023-08-24 07:02:33,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 721 transitions. [2023-08-24 07:02:33,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:02:33,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 721 transitions. [2023-08-24 07:02:33,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 144.2) internal successors, (721), 5 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:02:33,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 337.0) internal successors, (2022), 6 states have internal predecessors, (2022), 0 states have call successors, (0), 0 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 07:02:33,680 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 337.0) internal successors, (2022), 6 states have internal predecessors, (2022), 0 states have call successors, (0), 0 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 07:02:33,680 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 178 flow. Second operand 5 states and 721 transitions. [2023-08-24 07:02:33,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 54 transitions, 335 flow [2023-08-24 07:02:33,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 54 transitions, 329 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 07:02:33,683 INFO L231 Difference]: Finished difference. Result has 54 places, 40 transitions, 204 flow [2023-08-24 07:02:33,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=204, PETRI_PLACES=54, PETRI_TRANSITIONS=40} [2023-08-24 07:02:33,685 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 22 predicate places. [2023-08-24 07:02:33,686 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 40 transitions, 204 flow [2023-08-24 07:02:33,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 138.2) internal successors, (691), 5 states have internal predecessors, (691), 0 states have call successors, (0), 0 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 07:02:33,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:02:33,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:02:33,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 07:02:33,687 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 07:02:33,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:02:33,687 INFO L85 PathProgramCache]: Analyzing trace with hash 2097060374, now seen corresponding path program 1 times [2023-08-24 07:02:33,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:02:33,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543636336] [2023-08-24 07:02:33,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:02:33,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:02:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:02:33,811 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 07:02:33,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:02:33,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543636336] [2023-08-24 07:02:33,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543636336] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:02:33,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:02:33,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 07:02:33,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708955346] [2023-08-24 07:02:33,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:02:33,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 07:02:33,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:02:33,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 07:02:33,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 07:02:33,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 337 [2023-08-24 07:02:33,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 40 transitions, 204 flow. Second operand has 5 states, 5 states have (on average 143.6) internal successors, (718), 5 states have internal predecessors, (718), 0 states have call successors, (0), 0 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 07:02:33,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:02:33,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 337 [2023-08-24 07:02:33,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:02:33,917 INFO L124 PetriNetUnfolderBase]: 58/193 cut-off events. [2023-08-24 07:02:33,917 INFO L125 PetriNetUnfolderBase]: For 148/150 co-relation queries the response was YES. [2023-08-24 07:02:33,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 609 conditions, 193 events. 58/193 cut-off events. For 148/150 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 817 event pairs, 32 based on Foata normal form. 7/196 useless extension candidates. Maximal degree in co-relation 587. Up to 109 conditions per place. [2023-08-24 07:02:33,919 INFO L140 encePairwiseOnDemand]: 330/337 looper letters, 40 selfloop transitions, 10 changer transitions 1/56 dead transitions. [2023-08-24 07:02:33,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 56 transitions, 374 flow [2023-08-24 07:02:33,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:02:33,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:02:33,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1035 transitions. [2023-08-24 07:02:33,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4387452310300975 [2023-08-24 07:02:33,923 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1035 transitions. [2023-08-24 07:02:33,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1035 transitions. [2023-08-24 07:02:33,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:02:33,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1035 transitions. [2023-08-24 07:02:33,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 147.85714285714286) internal successors, (1035), 7 states have internal predecessors, (1035), 0 states have call successors, (0), 0 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 07:02:33,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 337.0) internal successors, (2696), 8 states have internal predecessors, (2696), 0 states have call successors, (0), 0 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 07:02:33,931 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 337.0) internal successors, (2696), 8 states have internal predecessors, (2696), 0 states have call successors, (0), 0 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 07:02:33,931 INFO L175 Difference]: Start difference. First operand has 54 places, 40 transitions, 204 flow. Second operand 7 states and 1035 transitions. [2023-08-24 07:02:33,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 56 transitions, 374 flow [2023-08-24 07:02:33,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 56 transitions, 359 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-24 07:02:33,935 INFO L231 Difference]: Finished difference. Result has 61 places, 43 transitions, 247 flow [2023-08-24 07:02:33,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=247, PETRI_PLACES=61, PETRI_TRANSITIONS=43} [2023-08-24 07:02:33,938 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 29 predicate places. [2023-08-24 07:02:33,938 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 43 transitions, 247 flow [2023-08-24 07:02:33,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.6) internal successors, (718), 5 states have internal predecessors, (718), 0 states have call successors, (0), 0 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 07:02:33,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:02:33,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:02:33,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 07:02:33,939 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 07:02:33,939 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:02:33,940 INFO L85 PathProgramCache]: Analyzing trace with hash 475108463, now seen corresponding path program 1 times [2023-08-24 07:02:33,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:02:33,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873495867] [2023-08-24 07:02:33,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:02:33,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:02:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:02:34,099 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 07:02:34,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:02:34,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873495867] [2023-08-24 07:02:34,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873495867] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:02:34,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:02:34,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 07:02:34,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590061959] [2023-08-24 07:02:34,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:02:34,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 07:02:34,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:02:34,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 07:02:34,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-24 07:02:34,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 337 [2023-08-24 07:02:34,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 43 transitions, 247 flow. Second operand has 5 states, 5 states have (on average 132.4) internal successors, (662), 5 states have internal predecessors, (662), 0 states have call successors, (0), 0 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 07:02:34,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:02:34,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 337 [2023-08-24 07:02:34,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:02:34,178 INFO L124 PetriNetUnfolderBase]: 75/219 cut-off events. [2023-08-24 07:02:34,178 INFO L125 PetriNetUnfolderBase]: For 260/260 co-relation queries the response was YES. [2023-08-24 07:02:34,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 751 conditions, 219 events. 75/219 cut-off events. For 260/260 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 849 event pairs, 30 based on Foata normal form. 6/225 useless extension candidates. Maximal degree in co-relation 725. Up to 122 conditions per place. [2023-08-24 07:02:34,180 INFO L140 encePairwiseOnDemand]: 330/337 looper letters, 39 selfloop transitions, 11 changer transitions 3/56 dead transitions. [2023-08-24 07:02:34,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 56 transitions, 421 flow [2023-08-24 07:02:34,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 07:02:34,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 07:02:34,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 557 transitions. [2023-08-24 07:02:34,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4132047477744807 [2023-08-24 07:02:34,182 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 557 transitions. [2023-08-24 07:02:34,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 557 transitions. [2023-08-24 07:02:34,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:02:34,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 557 transitions. [2023-08-24 07:02:34,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.25) internal successors, (557), 4 states have internal predecessors, (557), 0 states have call successors, (0), 0 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 07:02:34,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 337.0) internal successors, (1685), 5 states have internal predecessors, (1685), 0 states have call successors, (0), 0 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 07:02:34,187 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 337.0) internal successors, (1685), 5 states have internal predecessors, (1685), 0 states have call successors, (0), 0 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 07:02:34,187 INFO L175 Difference]: Start difference. First operand has 61 places, 43 transitions, 247 flow. Second operand 4 states and 557 transitions. [2023-08-24 07:02:34,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 56 transitions, 421 flow [2023-08-24 07:02:34,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 56 transitions, 409 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-24 07:02:34,190 INFO L231 Difference]: Finished difference. Result has 62 places, 44 transitions, 277 flow [2023-08-24 07:02:34,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=277, PETRI_PLACES=62, PETRI_TRANSITIONS=44} [2023-08-24 07:02:34,191 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 30 predicate places. [2023-08-24 07:02:34,191 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 44 transitions, 277 flow [2023-08-24 07:02:34,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 132.4) internal successors, (662), 5 states have internal predecessors, (662), 0 states have call successors, (0), 0 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 07:02:34,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:02:34,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:02:34,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 07:02:34,192 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 07:02:34,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:02:34,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1875912903, now seen corresponding path program 1 times [2023-08-24 07:02:34,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:02:34,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627009554] [2023-08-24 07:02:34,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:02:34,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:02:34,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:02:34,329 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 07:02:34,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:02:34,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627009554] [2023-08-24 07:02:34,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627009554] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:02:34,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:02:34,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 07:02:34,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610759493] [2023-08-24 07:02:34,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:02:34,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 07:02:34,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:02:34,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 07:02:34,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-24 07:02:34,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 337 [2023-08-24 07:02:34,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 44 transitions, 277 flow. Second operand has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:02:34,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:02:34,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 337 [2023-08-24 07:02:34,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:02:34,457 INFO L124 PetriNetUnfolderBase]: 45/164 cut-off events. [2023-08-24 07:02:34,457 INFO L125 PetriNetUnfolderBase]: For 247/247 co-relation queries the response was YES. [2023-08-24 07:02:34,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 164 events. 45/164 cut-off events. For 247/247 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 621 event pairs, 7 based on Foata normal form. 6/169 useless extension candidates. Maximal degree in co-relation 601. Up to 59 conditions per place. [2023-08-24 07:02:34,459 INFO L140 encePairwiseOnDemand]: 331/337 looper letters, 39 selfloop transitions, 8 changer transitions 1/56 dead transitions. [2023-08-24 07:02:34,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 56 transitions, 435 flow [2023-08-24 07:02:34,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 07:02:34,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 07:02:34,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1095 transitions. [2023-08-24 07:02:34,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4061572700296736 [2023-08-24 07:02:34,464 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1095 transitions. [2023-08-24 07:02:34,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1095 transitions. [2023-08-24 07:02:34,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:02:34,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1095 transitions. [2023-08-24 07:02:34,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 136.875) internal successors, (1095), 8 states have internal predecessors, (1095), 0 states have call successors, (0), 0 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 07:02:34,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 337.0) internal successors, (3033), 9 states have internal predecessors, (3033), 0 states have call successors, (0), 0 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 07:02:34,472 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 337.0) internal successors, (3033), 9 states have internal predecessors, (3033), 0 states have call successors, (0), 0 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 07:02:34,472 INFO L175 Difference]: Start difference. First operand has 62 places, 44 transitions, 277 flow. Second operand 8 states and 1095 transitions. [2023-08-24 07:02:34,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 56 transitions, 435 flow [2023-08-24 07:02:34,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 56 transitions, 428 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 07:02:34,476 INFO L231 Difference]: Finished difference. Result has 64 places, 43 transitions, 280 flow [2023-08-24 07:02:34,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=280, PETRI_PLACES=64, PETRI_TRANSITIONS=43} [2023-08-24 07:02:34,477 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 32 predicate places. [2023-08-24 07:02:34,477 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 43 transitions, 280 flow [2023-08-24 07:02:34,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:02:34,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:02:34,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:02:34,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 07:02:34,478 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 07:02:34,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:02:34,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1613957931, now seen corresponding path program 1 times [2023-08-24 07:02:34,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:02:34,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561829434] [2023-08-24 07:02:34,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:02:34,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:02:34,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:02:34,659 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 07:02:34,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:02:34,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561829434] [2023-08-24 07:02:34,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561829434] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:02:34,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:02:34,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-24 07:02:34,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680856875] [2023-08-24 07:02:34,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:02:34,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:02:34,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:02:34,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:02:34,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:02:34,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 337 [2023-08-24 07:02:34,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 43 transitions, 280 flow. Second operand has 7 states, 7 states have (on average 132.85714285714286) internal successors, (930), 7 states have internal predecessors, (930), 0 states have call successors, (0), 0 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 07:02:34,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:02:34,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 337 [2023-08-24 07:02:34,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:02:34,862 INFO L124 PetriNetUnfolderBase]: 42/154 cut-off events. [2023-08-24 07:02:34,863 INFO L125 PetriNetUnfolderBase]: For 264/264 co-relation queries the response was YES. [2023-08-24 07:02:34,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 591 conditions, 154 events. 42/154 cut-off events. For 264/264 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 547 event pairs, 7 based on Foata normal form. 6/159 useless extension candidates. Maximal degree in co-relation 573. Up to 41 conditions per place. [2023-08-24 07:02:34,864 INFO L140 encePairwiseOnDemand]: 330/337 looper letters, 41 selfloop transitions, 11 changer transitions 2/62 dead transitions. [2023-08-24 07:02:34,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 62 transitions, 487 flow [2023-08-24 07:02:34,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-24 07:02:34,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-24 07:02:34,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1617 transitions. [2023-08-24 07:02:34,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39985163204747776 [2023-08-24 07:02:34,869 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1617 transitions. [2023-08-24 07:02:34,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1617 transitions. [2023-08-24 07:02:34,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:02:34,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1617 transitions. [2023-08-24 07:02:34,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 134.75) internal successors, (1617), 12 states have internal predecessors, (1617), 0 states have call successors, (0), 0 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 07:02:34,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 337.0) internal successors, (4381), 13 states have internal predecessors, (4381), 0 states have call successors, (0), 0 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 07:02:34,881 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 337.0) internal successors, (4381), 13 states have internal predecessors, (4381), 0 states have call successors, (0), 0 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 07:02:34,881 INFO L175 Difference]: Start difference. First operand has 64 places, 43 transitions, 280 flow. Second operand 12 states and 1617 transitions. [2023-08-24 07:02:34,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 62 transitions, 487 flow [2023-08-24 07:02:34,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 62 transitions, 459 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-08-24 07:02:34,884 INFO L231 Difference]: Finished difference. Result has 66 places, 43 transitions, 272 flow [2023-08-24 07:02:34,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=272, PETRI_PLACES=66, PETRI_TRANSITIONS=43} [2023-08-24 07:02:34,885 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 34 predicate places. [2023-08-24 07:02:34,885 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 43 transitions, 272 flow [2023-08-24 07:02:34,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 132.85714285714286) internal successors, (930), 7 states have internal predecessors, (930), 0 states have call successors, (0), 0 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 07:02:34,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:02:34,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:02:34,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 07:02:34,886 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 07:02:34,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:02:34,886 INFO L85 PathProgramCache]: Analyzing trace with hash -739328446, now seen corresponding path program 1 times [2023-08-24 07:02:34,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:02:34,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518416706] [2023-08-24 07:02:34,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:02:34,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:02:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:02:35,035 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 07:02:35,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:02:35,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518416706] [2023-08-24 07:02:35,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518416706] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:02:35,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:02:35,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 07:02:35,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975113468] [2023-08-24 07:02:35,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:02:35,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 07:02:35,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:02:35,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 07:02:35,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 07:02:35,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 337 [2023-08-24 07:02:35,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 43 transitions, 272 flow. Second operand has 5 states, 5 states have (on average 133.4) internal successors, (667), 5 states have internal predecessors, (667), 0 states have call successors, (0), 0 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 07:02:35,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:02:35,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 337 [2023-08-24 07:02:35,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:02:35,148 INFO L124 PetriNetUnfolderBase]: 41/150 cut-off events. [2023-08-24 07:02:35,148 INFO L125 PetriNetUnfolderBase]: For 231/235 co-relation queries the response was YES. [2023-08-24 07:02:35,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 150 events. 41/150 cut-off events. For 231/235 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 527 event pairs, 17 based on Foata normal form. 7/155 useless extension candidates. Maximal degree in co-relation 559. Up to 57 conditions per place. [2023-08-24 07:02:35,149 INFO L140 encePairwiseOnDemand]: 331/337 looper letters, 32 selfloop transitions, 13 changer transitions 8/58 dead transitions. [2023-08-24 07:02:35,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 58 transitions, 451 flow [2023-08-24 07:02:35,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:02:35,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:02:35,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 955 transitions. [2023-08-24 07:02:35,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40483255616786773 [2023-08-24 07:02:35,152 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 955 transitions. [2023-08-24 07:02:35,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 955 transitions. [2023-08-24 07:02:35,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:02:35,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 955 transitions. [2023-08-24 07:02:35,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 136.42857142857142) internal successors, (955), 7 states have internal predecessors, (955), 0 states have call successors, (0), 0 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 07:02:35,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 337.0) internal successors, (2696), 8 states have internal predecessors, (2696), 0 states have call successors, (0), 0 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 07:02:35,159 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 337.0) internal successors, (2696), 8 states have internal predecessors, (2696), 0 states have call successors, (0), 0 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 07:02:35,159 INFO L175 Difference]: Start difference. First operand has 66 places, 43 transitions, 272 flow. Second operand 7 states and 955 transitions. [2023-08-24 07:02:35,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 58 transitions, 451 flow [2023-08-24 07:02:35,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 58 transitions, 426 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-08-24 07:02:35,162 INFO L231 Difference]: Finished difference. Result has 65 places, 39 transitions, 256 flow [2023-08-24 07:02:35,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=256, PETRI_PLACES=65, PETRI_TRANSITIONS=39} [2023-08-24 07:02:35,162 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 33 predicate places. [2023-08-24 07:02:35,162 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 39 transitions, 256 flow [2023-08-24 07:02:35,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 133.4) internal successors, (667), 5 states have internal predecessors, (667), 0 states have call successors, (0), 0 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 07:02:35,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:02:35,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:02:35,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 07:02:35,163 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 07:02:35,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:02:35,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1825289824, now seen corresponding path program 1 times [2023-08-24 07:02:35,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:02:35,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606351339] [2023-08-24 07:02:35,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:02:35,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:02:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:02:35,383 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 07:02:35,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:02:35,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606351339] [2023-08-24 07:02:35,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606351339] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:02:35,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:02:35,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 07:02:35,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179309464] [2023-08-24 07:02:35,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:02:35,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 07:02:35,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:02:35,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 07:02:35,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-24 07:02:35,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 337 [2023-08-24 07:02:35,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 39 transitions, 256 flow. Second operand has 6 states, 6 states have (on average 127.5) internal successors, (765), 6 states have internal predecessors, (765), 0 states have call successors, (0), 0 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 07:02:35,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:02:35,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 337 [2023-08-24 07:02:35,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:02:35,435 INFO L124 PetriNetUnfolderBase]: 24/98 cut-off events. [2023-08-24 07:02:35,436 INFO L125 PetriNetUnfolderBase]: For 175/175 co-relation queries the response was YES. [2023-08-24 07:02:35,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 98 events. 24/98 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 280 event pairs, 10 based on Foata normal form. 15/113 useless extension candidates. Maximal degree in co-relation 369. Up to 84 conditions per place. [2023-08-24 07:02:35,436 INFO L140 encePairwiseOnDemand]: 334/337 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2023-08-24 07:02:35,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 43 transitions, 340 flow [2023-08-24 07:02:35,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 07:02:35,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 07:02:35,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 526 transitions. [2023-08-24 07:02:35,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39020771513353114 [2023-08-24 07:02:35,439 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 526 transitions. [2023-08-24 07:02:35,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 526 transitions. [2023-08-24 07:02:35,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:02:35,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 526 transitions. [2023-08-24 07:02:35,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 131.5) internal successors, (526), 4 states have internal predecessors, (526), 0 states have call successors, (0), 0 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 07:02:35,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 337.0) internal successors, (1685), 5 states have internal predecessors, (1685), 0 states have call successors, (0), 0 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 07:02:35,443 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 337.0) internal successors, (1685), 5 states have internal predecessors, (1685), 0 states have call successors, (0), 0 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 07:02:35,443 INFO L175 Difference]: Start difference. First operand has 65 places, 39 transitions, 256 flow. Second operand 4 states and 526 transitions. [2023-08-24 07:02:35,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 43 transitions, 340 flow [2023-08-24 07:02:35,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 43 transitions, 297 flow, removed 2 selfloop flow, removed 9 redundant places. [2023-08-24 07:02:35,445 INFO L231 Difference]: Finished difference. Result has 56 places, 0 transitions, 0 flow [2023-08-24 07:02:35,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=56, PETRI_TRANSITIONS=0} [2023-08-24 07:02:35,445 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 24 predicate places. [2023-08-24 07:02:35,446 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 0 transitions, 0 flow [2023-08-24 07:02:35,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.5) internal successors, (765), 6 states have internal predecessors, (765), 0 states have call successors, (0), 0 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 07:02:35,448 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-08-24 07:02:35,449 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-24 07:02:35,449 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-08-24 07:02:35,449 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2023-08-24 07:02:35,449 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-08-24 07:02:35,449 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-08-24 07:02:35,449 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-24 07:02:35,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-24 07:02:35,450 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:02:35,454 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 07:02:35,454 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 07:02:35,457 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 07:02:35 BasicIcfg [2023-08-24 07:02:35,457 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 07:02:35,457 INFO L158 Benchmark]: Toolchain (without parser) took 10061.96ms. Allocated memory was 343.9MB in the beginning and 509.6MB in the end (delta: 165.7MB). Free memory was 319.1MB in the beginning and 217.7MB in the end (delta: 101.4MB). Peak memory consumption was 267.5MB. Max. memory is 16.0GB. [2023-08-24 07:02:35,457 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 343.9MB. Free memory was 320.5MB in the beginning and 320.4MB in the end (delta: 136.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 07:02:35,458 INFO L158 Benchmark]: CACSL2BoogieTranslator took 514.73ms. Allocated memory is still 343.9MB. Free memory was 318.7MB in the beginning and 298.6MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 07:02:35,458 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.38ms. Allocated memory is still 343.9MB. Free memory was 298.6MB in the beginning and 296.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 07:02:35,458 INFO L158 Benchmark]: Boogie Preprocessor took 33.84ms. Allocated memory is still 343.9MB. Free memory was 296.5MB in the beginning and 294.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 07:02:35,458 INFO L158 Benchmark]: RCFGBuilder took 444.37ms. Allocated memory is still 343.9MB. Free memory was 294.8MB in the beginning and 276.7MB in the end (delta: 18.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 07:02:35,459 INFO L158 Benchmark]: TraceAbstraction took 8986.16ms. Allocated memory was 343.9MB in the beginning and 509.6MB in the end (delta: 165.7MB). Free memory was 276.3MB in the beginning and 217.7MB in the end (delta: 58.6MB). Peak memory consumption was 225.6MB. Max. memory is 16.0GB. [2023-08-24 07:02:35,460 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 343.9MB. Free memory was 320.5MB in the beginning and 320.4MB in the end (delta: 136.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 514.73ms. Allocated memory is still 343.9MB. Free memory was 318.7MB in the beginning and 298.6MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 68.38ms. Allocated memory is still 343.9MB. Free memory was 298.6MB in the beginning and 296.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 33.84ms. Allocated memory is still 343.9MB. Free memory was 296.5MB in the beginning and 294.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 444.37ms. Allocated memory is still 343.9MB. Free memory was 294.8MB in the beginning and 276.7MB in the end (delta: 18.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 8986.16ms. Allocated memory was 343.9MB in the beginning and 509.6MB in the end (delta: 165.7MB). Free memory was 276.3MB in the beginning and 217.7MB in the end (delta: 58.6MB). Peak memory consumption was 225.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 236]: Unsoundness Warning unspecified type, defaulting to int C: short [236] - GenericResultAtLocation [Line: 237]: Unsoundness Warning unspecified type, defaulting to int C: short [237] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.9s, 161 PlacesBefore, 32 PlacesAfterwards, 165 TransitionsBefore, 30 TransitionsAfterwards, 6992 CoEnabledTransitionPairs, 7 FixpointIterations, 41 TrivialSequentialCompositions, 101 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 22 ConcurrentYvCompositions, 6 ChoiceCompositions, 170 TotalNumberOfCompositions, 12254 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6434, independent: 6110, independent conditional: 0, independent unconditional: 6110, dependent: 324, dependent conditional: 0, dependent unconditional: 324, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3924, independent: 3856, independent conditional: 0, independent unconditional: 3856, dependent: 68, dependent conditional: 0, dependent unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6434, independent: 2254, independent conditional: 0, independent unconditional: 2254, dependent: 256, dependent conditional: 0, dependent unconditional: 256, unknown: 3924, unknown conditional: 0, unknown unconditional: 3924] , Statistics on independence cache: Total cache size (in pairs): 90, Positive cache size: 67, Positive conditional cache size: 0, Positive unconditional cache size: 67, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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 3 procedures, 231 locations, 7 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: 8.8s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 350 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 350 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 988 IncrementalHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 12 mSDtfsCounter, 988 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=280occurred in iteration=8, InterpolantAutomatonStates: 71, 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, 1.7s InterpolantComputationTime, 145 NumberOfCodeBlocks, 145 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 134 ConstructedInterpolants, 0 QuantifiedInterpolants, 704 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-24 07:02:35,476 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...