/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/weaver/array-eq-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 15:04:37,060 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 15:04:37,116 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-NoLbe.epf [2023-12-09 15:04:37,140 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 15:04:37,141 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 15:04:37,141 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 15:04:37,142 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 15:04:37,142 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 15:04:37,142 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 15:04:37,142 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 15:04:37,143 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 15:04:37,143 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 15:04:37,143 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 15:04:37,143 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 15:04:37,143 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 15:04:37,144 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 15:04:37,147 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 15:04:37,149 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 15:04:37,149 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 15:04:37,149 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 15:04:37,150 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 15:04:37,150 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 15:04:37,151 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 15:04:37,151 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 15:04:37,151 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 15:04:37,151 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:04:37,151 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 15:04:37,151 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 15:04:37,152 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 15:04:37,152 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 15:04:37,152 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 15:04:37,152 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 15:04:37,153 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 15:04:37,153 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 15:04:37,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 15:04:37,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 15:04:37,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 15:04:37,348 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 15:04:37,348 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 15:04:37,349 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/array-eq-symm.wvr.c [2023-12-09 15:04:38,369 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 15:04:38,530 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 15:04:38,530 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/array-eq-symm.wvr.c [2023-12-09 15:04:38,536 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a2b7605f/7aa06de6d59841f1a5439af768d5d8ce/FLAG05226db19 [2023-12-09 15:04:38,550 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a2b7605f/7aa06de6d59841f1a5439af768d5d8ce [2023-12-09 15:04:38,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 15:04:38,553 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 15:04:38,557 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 15:04:38,557 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 15:04:38,560 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 15:04:38,561 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:04:38" (1/1) ... [2023-12-09 15:04:38,561 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73af51b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:04:38, skipping insertion in model container [2023-12-09 15:04:38,562 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:04:38" (1/1) ... [2023-12-09 15:04:38,583 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 15:04:38,683 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/array-eq-symm.wvr.c[2277,2290] [2023-12-09 15:04:38,689 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:04:38,707 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 15:04:38,719 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/array-eq-symm.wvr.c[2277,2290] [2023-12-09 15:04:38,722 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:04:38,731 INFO L206 MainTranslator]: Completed translation [2023-12-09 15:04:38,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:04:38 WrapperNode [2023-12-09 15:04:38,732 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 15:04:38,732 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 15:04:38,732 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 15:04:38,732 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 15:04:38,737 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:04:38" (1/1) ... [2023-12-09 15:04:38,742 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:04:38" (1/1) ... [2023-12-09 15:04:38,756 INFO L138 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 117 [2023-12-09 15:04:38,756 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 15:04:38,757 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 15:04:38,757 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 15:04:38,757 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 15:04:38,762 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:04:38" (1/1) ... [2023-12-09 15:04:38,762 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:04:38" (1/1) ... [2023-12-09 15:04:38,765 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:04:38" (1/1) ... [2023-12-09 15:04:38,772 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:04:38" (1/1) ... [2023-12-09 15:04:38,783 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:04:38" (1/1) ... [2023-12-09 15:04:38,786 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:04:38" (1/1) ... [2023-12-09 15:04:38,787 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:04:38" (1/1) ... [2023-12-09 15:04:38,788 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:04:38" (1/1) ... [2023-12-09 15:04:38,790 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 15:04:38,790 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 15:04:38,790 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 15:04:38,791 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 15:04:38,791 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:04:38" (1/1) ... [2023-12-09 15:04:38,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:04:38,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:04:38,817 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) [2023-12-09 15:04:38,834 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 [2023-12-09 15:04:38,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 15:04:38,847 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-09 15:04:38,848 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-09 15:04:38,848 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-09 15:04:38,848 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-09 15:04:38,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 15:04:38,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 15:04:38,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 15:04:38,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-09 15:04:38,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 15:04:38,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 15:04:38,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 15:04:38,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 15:04:38,849 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-09 15:04:38,920 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 15:04:38,921 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 15:04:39,179 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 15:04:39,189 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 15:04:39,189 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-09 15:04:39,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:04:39 BoogieIcfgContainer [2023-12-09 15:04:39,191 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 15:04:39,192 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 15:04:39,192 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 15:04:39,215 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 15:04:39,215 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:04:38" (1/3) ... [2023-12-09 15:04:39,216 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67ccb848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:04:39, skipping insertion in model container [2023-12-09 15:04:39,216 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:04:38" (2/3) ... [2023-12-09 15:04:39,216 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67ccb848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:04:39, skipping insertion in model container [2023-12-09 15:04:39,216 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:04:39" (3/3) ... [2023-12-09 15:04:39,217 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-symm.wvr.c [2023-12-09 15:04:39,230 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 15:04:39,230 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 15:04:39,230 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 15:04:39,276 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-09 15:04:39,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 178 transitions, 370 flow [2023-12-09 15:04:39,380 INFO L124 PetriNetUnfolderBase]: 15/176 cut-off events. [2023-12-09 15:04:39,380 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:04:39,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 176 events. 15/176 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 131 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 134. Up to 3 conditions per place. [2023-12-09 15:04:39,390 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 178 transitions, 370 flow [2023-12-09 15:04:39,394 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 167 transitions, 346 flow [2023-12-09 15:04:39,416 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:04:39,421 INFO L362 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@8bfdc69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:04:39,421 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-09 15:04:39,447 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:04:39,447 INFO L124 PetriNetUnfolderBase]: 15/166 cut-off events. [2023-12-09 15:04:39,447 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:04:39,448 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:04:39,448 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:04:39,449 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:04:39,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:04:39,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1793245832, now seen corresponding path program 1 times [2023-12-09 15:04:39,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:04:39,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068281795] [2023-12-09 15:04:39,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:04:39,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:04:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:04:40,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:04:40,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:04:40,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068281795] [2023-12-09 15:04:40,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068281795] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:04:40,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:04:40,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 15:04:40,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616770172] [2023-12-09 15:04:40,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:04:40,144 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 15:04:40,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:04:40,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 15:04:40,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-09 15:04:40,171 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 178 [2023-12-09 15:04:40,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 167 transitions, 346 flow. Second operand has 6 states, 6 states have (on average 121.33333333333333) internal successors, (728), 6 states have internal predecessors, (728), 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) [2023-12-09 15:04:40,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:04:40,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 178 [2023-12-09 15:04:40,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:04:40,491 INFO L124 PetriNetUnfolderBase]: 180/664 cut-off events. [2023-12-09 15:04:40,492 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2023-12-09 15:04:40,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1065 conditions, 664 events. 180/664 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3336 event pairs, 41 based on Foata normal form. 9/580 useless extension candidates. Maximal degree in co-relation 780. Up to 138 conditions per place. [2023-12-09 15:04:40,502 INFO L140 encePairwiseOnDemand]: 157/178 looper letters, 77 selfloop transitions, 5 changer transitions 11/198 dead transitions. [2023-12-09 15:04:40,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 198 transitions, 609 flow [2023-12-09 15:04:40,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-09 15:04:40,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-09 15:04:40,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1144 transitions. [2023-12-09 15:04:40,522 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.714107365792759 [2023-12-09 15:04:40,523 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1144 transitions. [2023-12-09 15:04:40,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1144 transitions. [2023-12-09 15:04:40,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:04:40,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1144 transitions. [2023-12-09 15:04:40,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 127.11111111111111) internal successors, (1144), 9 states have internal predecessors, (1144), 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) [2023-12-09 15:04:40,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 178.0) internal successors, (1780), 10 states have internal predecessors, (1780), 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) [2023-12-09 15:04:40,540 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 178.0) internal successors, (1780), 10 states have internal predecessors, (1780), 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) [2023-12-09 15:04:40,545 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 8 predicate places. [2023-12-09 15:04:40,546 INFO L500 AbstractCegarLoop]: Abstraction has has 167 places, 198 transitions, 609 flow [2023-12-09 15:04:40,547 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 121.33333333333333) internal successors, (728), 6 states have internal predecessors, (728), 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) [2023-12-09 15:04:40,547 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:04:40,547 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:04:40,548 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 15:04:40,548 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:04:40,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:04:40,549 INFO L85 PathProgramCache]: Analyzing trace with hash 902047316, now seen corresponding path program 1 times [2023-12-09 15:04:40,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:04:40,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287012140] [2023-12-09 15:04:40,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:04:40,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:04:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:04:40,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:04:40,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:04:40,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287012140] [2023-12-09 15:04:40,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287012140] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:04:40,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:04:40,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 15:04:40,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238347148] [2023-12-09 15:04:40,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:04:40,767 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:04:40,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:04:40,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:04:40,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-09 15:04:40,772 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 178 [2023-12-09 15:04:40,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 198 transitions, 609 flow. Second operand has 7 states, 7 states have (on average 127.28571428571429) internal successors, (891), 7 states have internal predecessors, (891), 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) [2023-12-09 15:04:40,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:04:40,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 178 [2023-12-09 15:04:40,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:04:41,022 INFO L124 PetriNetUnfolderBase]: 214/879 cut-off events. [2023-12-09 15:04:41,023 INFO L125 PetriNetUnfolderBase]: For 313/335 co-relation queries the response was YES. [2023-12-09 15:04:41,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1712 conditions, 879 events. 214/879 cut-off events. For 313/335 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4768 event pairs, 46 based on Foata normal form. 0/770 useless extension candidates. Maximal degree in co-relation 977. Up to 153 conditions per place. [2023-12-09 15:04:41,030 INFO L140 encePairwiseOnDemand]: 165/178 looper letters, 86 selfloop transitions, 15 changer transitions 14/235 dead transitions. [2023-12-09 15:04:41,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 235 transitions, 945 flow [2023-12-09 15:04:41,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 15:04:41,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 15:04:41,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1310 transitions. [2023-12-09 15:04:41,034 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7359550561797753 [2023-12-09 15:04:41,034 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1310 transitions. [2023-12-09 15:04:41,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1310 transitions. [2023-12-09 15:04:41,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:04:41,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1310 transitions. [2023-12-09 15:04:41,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 131.0) internal successors, (1310), 10 states have internal predecessors, (1310), 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) [2023-12-09 15:04:41,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 178.0) internal successors, (1958), 11 states have internal predecessors, (1958), 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) [2023-12-09 15:04:41,040 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 178.0) internal successors, (1958), 11 states have internal predecessors, (1958), 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) [2023-12-09 15:04:41,041 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 17 predicate places. [2023-12-09 15:04:41,041 INFO L500 AbstractCegarLoop]: Abstraction has has 176 places, 235 transitions, 945 flow [2023-12-09 15:04:41,042 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 127.28571428571429) internal successors, (891), 7 states have internal predecessors, (891), 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) [2023-12-09 15:04:41,042 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:04:41,042 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:04:41,042 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 15:04:41,043 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:04:41,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:04:41,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1458438143, now seen corresponding path program 1 times [2023-12-09 15:04:41,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:04:41,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401633771] [2023-12-09 15:04:41,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:04:41,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:04:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:04:41,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:04:41,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:04:41,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401633771] [2023-12-09 15:04:41,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401633771] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:04:41,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:04:41,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 15:04:41,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068974772] [2023-12-09 15:04:41,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:04:41,214 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:04:41,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:04:41,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:04:41,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-09 15:04:41,217 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 178 [2023-12-09 15:04:41,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 235 transitions, 945 flow. Second operand has 7 states, 7 states have (on average 127.28571428571429) internal successors, (891), 7 states have internal predecessors, (891), 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) [2023-12-09 15:04:41,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:04:41,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 178 [2023-12-09 15:04:41,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:04:41,458 INFO L124 PetriNetUnfolderBase]: 219/888 cut-off events. [2023-12-09 15:04:41,459 INFO L125 PetriNetUnfolderBase]: For 558/604 co-relation queries the response was YES. [2023-12-09 15:04:41,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2067 conditions, 888 events. 219/888 cut-off events. For 558/604 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4568 event pairs, 56 based on Foata normal form. 0/778 useless extension candidates. Maximal degree in co-relation 1431. Up to 208 conditions per place. [2023-12-09 15:04:41,463 INFO L140 encePairwiseOnDemand]: 165/178 looper letters, 71 selfloop transitions, 11 changer transitions 37/239 dead transitions. [2023-12-09 15:04:41,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 239 transitions, 1181 flow [2023-12-09 15:04:41,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 15:04:41,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 15:04:41,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1308 transitions. [2023-12-09 15:04:41,466 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7348314606741573 [2023-12-09 15:04:41,467 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1308 transitions. [2023-12-09 15:04:41,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1308 transitions. [2023-12-09 15:04:41,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:04:41,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1308 transitions. [2023-12-09 15:04:41,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 130.8) internal successors, (1308), 10 states have internal predecessors, (1308), 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) [2023-12-09 15:04:41,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 178.0) internal successors, (1958), 11 states have internal predecessors, (1958), 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) [2023-12-09 15:04:41,472 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 178.0) internal successors, (1958), 11 states have internal predecessors, (1958), 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) [2023-12-09 15:04:41,473 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 26 predicate places. [2023-12-09 15:04:41,473 INFO L500 AbstractCegarLoop]: Abstraction has has 185 places, 239 transitions, 1181 flow [2023-12-09 15:04:41,473 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 127.28571428571429) internal successors, (891), 7 states have internal predecessors, (891), 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) [2023-12-09 15:04:41,473 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:04:41,473 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:04:41,473 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 15:04:41,474 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:04:41,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:04:41,474 INFO L85 PathProgramCache]: Analyzing trace with hash -282284416, now seen corresponding path program 1 times [2023-12-09 15:04:41,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:04:41,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904747399] [2023-12-09 15:04:41,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:04:41,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:04:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:04:41,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:04:41,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:04:41,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904747399] [2023-12-09 15:04:41,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904747399] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:04:41,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:04:41,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 15:04:41,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691130950] [2023-12-09 15:04:41,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:04:41,588 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:04:41,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:04:41,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:04:41,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-09 15:04:41,590 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 178 [2023-12-09 15:04:41,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 239 transitions, 1181 flow. Second operand has 7 states, 7 states have (on average 127.85714285714286) internal successors, (895), 7 states have internal predecessors, (895), 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) [2023-12-09 15:04:41,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:04:41,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 178 [2023-12-09 15:04:41,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:04:41,815 INFO L124 PetriNetUnfolderBase]: 253/1121 cut-off events. [2023-12-09 15:04:41,816 INFO L125 PetriNetUnfolderBase]: For 1362/1434 co-relation queries the response was YES. [2023-12-09 15:04:41,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2992 conditions, 1121 events. 253/1121 cut-off events. For 1362/1434 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 6363 event pairs, 52 based on Foata normal form. 0/997 useless extension candidates. Maximal degree in co-relation 1662. Up to 208 conditions per place. [2023-12-09 15:04:41,823 INFO L140 encePairwiseOnDemand]: 165/178 looper letters, 82 selfloop transitions, 15 changer transitions 55/276 dead transitions. [2023-12-09 15:04:41,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 276 transitions, 1761 flow [2023-12-09 15:04:41,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 15:04:41,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 15:04:41,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1295 transitions. [2023-12-09 15:04:41,826 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7275280898876404 [2023-12-09 15:04:41,826 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1295 transitions. [2023-12-09 15:04:41,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1295 transitions. [2023-12-09 15:04:41,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:04:41,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1295 transitions. [2023-12-09 15:04:41,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 129.5) internal successors, (1295), 10 states have internal predecessors, (1295), 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) [2023-12-09 15:04:41,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 178.0) internal successors, (1958), 11 states have internal predecessors, (1958), 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) [2023-12-09 15:04:41,831 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 178.0) internal successors, (1958), 11 states have internal predecessors, (1958), 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) [2023-12-09 15:04:41,832 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 35 predicate places. [2023-12-09 15:04:41,832 INFO L500 AbstractCegarLoop]: Abstraction has has 194 places, 276 transitions, 1761 flow [2023-12-09 15:04:41,833 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 127.85714285714286) internal successors, (895), 7 states have internal predecessors, (895), 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) [2023-12-09 15:04:41,833 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:04:41,833 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:04:41,833 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 15:04:41,833 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:04:41,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:04:41,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1276130531, now seen corresponding path program 1 times [2023-12-09 15:04:41,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:04:41,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726934807] [2023-12-09 15:04:41,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:04:41,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:04:41,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:04:41,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:04:41,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:04:41,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726934807] [2023-12-09 15:04:41,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726934807] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:04:41,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:04:41,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 15:04:41,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056690243] [2023-12-09 15:04:41,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:04:41,989 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:04:41,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:04:41,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:04:41,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-09 15:04:41,991 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 178 [2023-12-09 15:04:41,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 276 transitions, 1761 flow. Second operand has 7 states, 7 states have (on average 127.85714285714286) internal successors, (895), 7 states have internal predecessors, (895), 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) [2023-12-09 15:04:41,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:04:41,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 178 [2023-12-09 15:04:41,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:04:42,200 INFO L124 PetriNetUnfolderBase]: 225/1002 cut-off events. [2023-12-09 15:04:42,200 INFO L125 PetriNetUnfolderBase]: For 1804/1916 co-relation queries the response was YES. [2023-12-09 15:04:42,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3061 conditions, 1002 events. 225/1002 cut-off events. For 1804/1916 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5306 event pairs, 62 based on Foata normal form. 2/890 useless extension candidates. Maximal degree in co-relation 1895. Up to 208 conditions per place. [2023-12-09 15:04:42,207 INFO L140 encePairwiseOnDemand]: 165/178 looper letters, 75 selfloop transitions, 11 changer transitions 63/269 dead transitions. [2023-12-09 15:04:42,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 269 transitions, 1965 flow [2023-12-09 15:04:42,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 15:04:42,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 15:04:42,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1293 transitions. [2023-12-09 15:04:42,210 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7264044943820225 [2023-12-09 15:04:42,210 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1293 transitions. [2023-12-09 15:04:42,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1293 transitions. [2023-12-09 15:04:42,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:04:42,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1293 transitions. [2023-12-09 15:04:42,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 129.3) internal successors, (1293), 10 states have internal predecessors, (1293), 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) [2023-12-09 15:04:42,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 178.0) internal successors, (1958), 11 states have internal predecessors, (1958), 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) [2023-12-09 15:04:42,215 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 178.0) internal successors, (1958), 11 states have internal predecessors, (1958), 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) [2023-12-09 15:04:42,216 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 44 predicate places. [2023-12-09 15:04:42,216 INFO L500 AbstractCegarLoop]: Abstraction has has 203 places, 269 transitions, 1965 flow [2023-12-09 15:04:42,217 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 127.85714285714286) internal successors, (895), 7 states have internal predecessors, (895), 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) [2023-12-09 15:04:42,217 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:04:42,217 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:04:42,217 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-09 15:04:42,217 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:04:42,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:04:42,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1018100727, now seen corresponding path program 1 times [2023-12-09 15:04:42,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:04:42,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482468813] [2023-12-09 15:04:42,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:04:42,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:04:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:04:42,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:04:42,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:04:42,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482468813] [2023-12-09 15:04:42,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482468813] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:04:42,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21936291] [2023-12-09 15:04:42,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:04:42,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:04:42,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:04:42,463 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:04:42,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-09 15:04:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:04:42,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-09 15:04:42,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:04:42,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:04:42,998 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:04:43,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:04:43,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21936291] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-09 15:04:43,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-09 15:04:43,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 30 [2023-12-09 15:04:43,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053343496] [2023-12-09 15:04:43,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:04:43,425 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-09 15:04:43,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:04:43,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-09 15:04:43,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=667, Unknown=0, NotChecked=0, Total=870 [2023-12-09 15:04:43,427 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 178 [2023-12-09 15:04:43,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 269 transitions, 1965 flow. Second operand has 11 states, 11 states have (on average 123.9090909090909) internal successors, (1363), 11 states have internal predecessors, (1363), 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) [2023-12-09 15:04:43,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:04:43,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 178 [2023-12-09 15:04:43,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:04:43,860 INFO L124 PetriNetUnfolderBase]: 188/1013 cut-off events. [2023-12-09 15:04:43,861 INFO L125 PetriNetUnfolderBase]: For 2580/2718 co-relation queries the response was YES. [2023-12-09 15:04:43,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3343 conditions, 1013 events. 188/1013 cut-off events. For 2580/2718 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5556 event pairs, 56 based on Foata normal form. 2/917 useless extension candidates. Maximal degree in co-relation 1980. Up to 200 conditions per place. [2023-12-09 15:04:43,866 INFO L140 encePairwiseOnDemand]: 158/178 looper letters, 79 selfloop transitions, 17 changer transitions 63/277 dead transitions. [2023-12-09 15:04:43,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 277 transitions, 2373 flow [2023-12-09 15:04:43,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-09 15:04:43,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-12-09 15:04:43,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1903 transitions. [2023-12-09 15:04:43,870 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7127340823970038 [2023-12-09 15:04:43,870 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1903 transitions. [2023-12-09 15:04:43,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1903 transitions. [2023-12-09 15:04:43,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:04:43,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1903 transitions. [2023-12-09 15:04:43,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 126.86666666666666) internal successors, (1903), 15 states have internal predecessors, (1903), 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) [2023-12-09 15:04:43,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 178.0) internal successors, (2848), 16 states have internal predecessors, (2848), 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) [2023-12-09 15:04:43,877 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 178.0) internal successors, (2848), 16 states have internal predecessors, (2848), 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) [2023-12-09 15:04:43,878 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 58 predicate places. [2023-12-09 15:04:43,878 INFO L500 AbstractCegarLoop]: Abstraction has has 217 places, 277 transitions, 2373 flow [2023-12-09 15:04:43,879 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 123.9090909090909) internal successors, (1363), 11 states have internal predecessors, (1363), 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) [2023-12-09 15:04:43,879 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:04:43,879 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:04:43,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-09 15:04:44,084 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-09 15:04:44,084 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:04:44,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:04:44,085 INFO L85 PathProgramCache]: Analyzing trace with hash 782743928, now seen corresponding path program 1 times [2023-12-09 15:04:44,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:04:44,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518011174] [2023-12-09 15:04:44,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:04:44,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:04:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:04:44,310 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:04:44,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:04:44,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518011174] [2023-12-09 15:04:44,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518011174] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:04:44,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833976572] [2023-12-09 15:04:44,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:04:44,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:04:44,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:04:44,312 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:04:44,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-09 15:04:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:04:44,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-09 15:04:44,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:04:44,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:04:44,720 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:04:45,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:04:45,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833976572] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-09 15:04:45,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-09 15:04:45,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 30 [2023-12-09 15:04:45,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151294736] [2023-12-09 15:04:45,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:04:45,081 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-09 15:04:45,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:04:45,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-09 15:04:45,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=667, Unknown=0, NotChecked=0, Total=870 [2023-12-09 15:04:45,083 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 178 [2023-12-09 15:04:45,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 277 transitions, 2373 flow. Second operand has 11 states, 11 states have (on average 123.9090909090909) internal successors, (1363), 11 states have internal predecessors, (1363), 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) [2023-12-09 15:04:45,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:04:45,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 178 [2023-12-09 15:04:45,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:04:45,514 INFO L124 PetriNetUnfolderBase]: 178/1055 cut-off events. [2023-12-09 15:04:45,515 INFO L125 PetriNetUnfolderBase]: For 4038/4248 co-relation queries the response was YES. [2023-12-09 15:04:45,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3790 conditions, 1055 events. 178/1055 cut-off events. For 4038/4248 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 5942 event pairs, 51 based on Foata normal form. 0/965 useless extension candidates. Maximal degree in co-relation 2199. Up to 243 conditions per place. [2023-12-09 15:04:45,521 INFO L140 encePairwiseOnDemand]: 158/178 looper letters, 85 selfloop transitions, 17 changer transitions 63/287 dead transitions. [2023-12-09 15:04:45,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 287 transitions, 2846 flow [2023-12-09 15:04:45,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-09 15:04:45,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-12-09 15:04:45,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1905 transitions. [2023-12-09 15:04:45,525 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7134831460674157 [2023-12-09 15:04:45,525 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1905 transitions. [2023-12-09 15:04:45,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1905 transitions. [2023-12-09 15:04:45,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:04:45,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1905 transitions. [2023-12-09 15:04:45,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 127.0) internal successors, (1905), 15 states have internal predecessors, (1905), 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) [2023-12-09 15:04:45,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 178.0) internal successors, (2848), 16 states have internal predecessors, (2848), 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) [2023-12-09 15:04:45,532 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 178.0) internal successors, (2848), 16 states have internal predecessors, (2848), 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) [2023-12-09 15:04:45,533 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 72 predicate places. [2023-12-09 15:04:45,533 INFO L500 AbstractCegarLoop]: Abstraction has has 231 places, 287 transitions, 2846 flow [2023-12-09 15:04:45,533 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 123.9090909090909) internal successors, (1363), 11 states have internal predecessors, (1363), 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) [2023-12-09 15:04:45,533 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:04:45,533 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:04:45,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-09 15:04:45,738 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-09 15:04:45,739 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:04:45,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:04:45,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1953654224, now seen corresponding path program 1 times [2023-12-09 15:04:45,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:04:45,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363308508] [2023-12-09 15:04:45,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:04:45,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:04:45,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:04:46,473 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:04:46,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:04:46,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363308508] [2023-12-09 15:04:46,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363308508] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:04:46,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250284881] [2023-12-09 15:04:46,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:04:46,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:04:46,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:04:46,475 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:04:46,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-09 15:04:46,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:04:46,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-09 15:04:46,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:04:47,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-09 15:04:47,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:04:47,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:04:47,192 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-12-09 15:04:47,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2023-12-09 15:04:47,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:04:47,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250284881] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:04:47,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:04:47,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 9] total 27 [2023-12-09 15:04:47,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527212451] [2023-12-09 15:04:47,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:04:47,309 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-09 15:04:47,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:04:47,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-09 15:04:47,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2023-12-09 15:04:47,314 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:04:47,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 287 transitions, 2846 flow. Second operand has 27 states, 27 states have (on average 108.81481481481481) internal successors, (2938), 27 states have internal predecessors, (2938), 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) [2023-12-09 15:04:47,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:04:47,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:04:47,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:04:49,162 INFO L124 PetriNetUnfolderBase]: 2851/5871 cut-off events. [2023-12-09 15:04:49,162 INFO L125 PetriNetUnfolderBase]: For 19080/19104 co-relation queries the response was YES. [2023-12-09 15:04:49,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21037 conditions, 5871 events. 2851/5871 cut-off events. For 19080/19104 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 43878 event pairs, 216 based on Foata normal form. 4/5392 useless extension candidates. Maximal degree in co-relation 17151. Up to 1582 conditions per place. [2023-12-09 15:04:49,209 INFO L140 encePairwiseOnDemand]: 145/178 looper letters, 347 selfloop transitions, 101 changer transitions 66/616 dead transitions. [2023-12-09 15:04:49,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 616 transitions, 5978 flow [2023-12-09 15:04:49,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-09 15:04:49,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-12-09 15:04:49,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 5445 transitions. [2023-12-09 15:04:49,217 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6372893258426966 [2023-12-09 15:04:49,217 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 5445 transitions. [2023-12-09 15:04:49,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 5445 transitions. [2023-12-09 15:04:49,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:04:49,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 5445 transitions. [2023-12-09 15:04:49,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 113.4375) internal successors, (5445), 48 states have internal predecessors, (5445), 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) [2023-12-09 15:04:49,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 178.0) internal successors, (8722), 49 states have internal predecessors, (8722), 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) [2023-12-09 15:04:49,250 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 178.0) internal successors, (8722), 49 states have internal predecessors, (8722), 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) [2023-12-09 15:04:49,252 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 119 predicate places. [2023-12-09 15:04:49,253 INFO L500 AbstractCegarLoop]: Abstraction has has 278 places, 616 transitions, 5978 flow [2023-12-09 15:04:49,253 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 108.81481481481481) internal successors, (2938), 27 states have internal predecessors, (2938), 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) [2023-12-09 15:04:49,253 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:04:49,254 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:04:49,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-09 15:04:49,463 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:04:49,464 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:04:49,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:04:49,464 INFO L85 PathProgramCache]: Analyzing trace with hash -989077896, now seen corresponding path program 1 times [2023-12-09 15:04:49,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:04:49,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885524582] [2023-12-09 15:04:49,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:04:49,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:04:49,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:04:50,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:04:50,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:04:50,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885524582] [2023-12-09 15:04:50,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885524582] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:04:50,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:04:50,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-09 15:04:50,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842012740] [2023-12-09 15:04:50,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:04:50,304 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:04:50,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:04:50,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:04:50,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:04:50,306 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:04:50,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 616 transitions, 5978 flow. Second operand has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:04:50,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:04:50,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:04:50,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:04:51,753 INFO L124 PetriNetUnfolderBase]: 2945/6118 cut-off events. [2023-12-09 15:04:51,753 INFO L125 PetriNetUnfolderBase]: For 22528/22670 co-relation queries the response was YES. [2023-12-09 15:04:51,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26918 conditions, 6118 events. 2945/6118 cut-off events. For 22528/22670 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 46480 event pairs, 221 based on Foata normal form. 16/5642 useless extension candidates. Maximal degree in co-relation 22095. Up to 2871 conditions per place. [2023-12-09 15:04:51,814 INFO L140 encePairwiseOnDemand]: 146/178 looper letters, 424 selfloop transitions, 67 changer transitions 112/705 dead transitions. [2023-12-09 15:04:51,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 705 transitions, 7821 flow [2023-12-09 15:04:51,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-09 15:04:51,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-12-09 15:04:51,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3803 transitions. [2023-12-09 15:04:51,822 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6283873099801719 [2023-12-09 15:04:51,822 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3803 transitions. [2023-12-09 15:04:51,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3803 transitions. [2023-12-09 15:04:51,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:04:51,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3803 transitions. [2023-12-09 15:04:51,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 111.8529411764706) internal successors, (3803), 34 states have internal predecessors, (3803), 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) [2023-12-09 15:04:51,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 178.0) internal successors, (6230), 35 states have internal predecessors, (6230), 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) [2023-12-09 15:04:51,844 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 178.0) internal successors, (6230), 35 states have internal predecessors, (6230), 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) [2023-12-09 15:04:51,844 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 152 predicate places. [2023-12-09 15:04:51,845 INFO L500 AbstractCegarLoop]: Abstraction has has 311 places, 705 transitions, 7821 flow [2023-12-09 15:04:51,845 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:04:51,845 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:04:51,845 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:04:51,846 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-09 15:04:51,846 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:04:51,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:04:51,846 INFO L85 PathProgramCache]: Analyzing trace with hash -256980664, now seen corresponding path program 2 times [2023-12-09 15:04:51,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:04:51,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913483314] [2023-12-09 15:04:51,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:04:51,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:04:51,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:04:52,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:04:52,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:04:52,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913483314] [2023-12-09 15:04:52,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913483314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:04:52,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:04:52,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-09 15:04:52,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566689348] [2023-12-09 15:04:52,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:04:52,590 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:04:52,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:04:52,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:04:52,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:04:52,592 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:04:52,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 705 transitions, 7821 flow. Second operand has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:04:52,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:04:52,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:04:52,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:04:54,051 INFO L124 PetriNetUnfolderBase]: 2966/6155 cut-off events. [2023-12-09 15:04:54,052 INFO L125 PetriNetUnfolderBase]: For 24385/24599 co-relation queries the response was YES. [2023-12-09 15:04:54,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32224 conditions, 6155 events. 2966/6155 cut-off events. For 24385/24599 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 46907 event pairs, 129 based on Foata normal form. 8/5676 useless extension candidates. Maximal degree in co-relation 26777. Up to 2871 conditions per place. [2023-12-09 15:04:54,105 INFO L140 encePairwiseOnDemand]: 147/178 looper letters, 482 selfloop transitions, 103 changer transitions 159/846 dead transitions. [2023-12-09 15:04:54,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 846 transitions, 10499 flow [2023-12-09 15:04:54,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-09 15:04:54,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-12-09 15:04:54,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3783 transitions. [2023-12-09 15:04:54,111 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6250826173165895 [2023-12-09 15:04:54,111 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3783 transitions. [2023-12-09 15:04:54,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3783 transitions. [2023-12-09 15:04:54,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:04:54,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3783 transitions. [2023-12-09 15:04:54,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 111.26470588235294) internal successors, (3783), 34 states have internal predecessors, (3783), 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) [2023-12-09 15:04:54,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 178.0) internal successors, (6230), 35 states have internal predecessors, (6230), 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) [2023-12-09 15:04:54,124 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 178.0) internal successors, (6230), 35 states have internal predecessors, (6230), 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) [2023-12-09 15:04:54,124 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 185 predicate places. [2023-12-09 15:04:54,125 INFO L500 AbstractCegarLoop]: Abstraction has has 344 places, 846 transitions, 10499 flow [2023-12-09 15:04:54,125 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:04:54,125 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:04:54,125 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:04:54,125 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-09 15:04:54,126 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:04:54,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:04:54,126 INFO L85 PathProgramCache]: Analyzing trace with hash 669426520, now seen corresponding path program 2 times [2023-12-09 15:04:54,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:04:54,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463862457] [2023-12-09 15:04:54,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:04:54,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:04:54,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:04:54,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:04:54,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:04:54,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463862457] [2023-12-09 15:04:54,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463862457] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:04:54,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:04:54,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-09 15:04:54,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366113307] [2023-12-09 15:04:54,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:04:54,825 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-09 15:04:54,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:04:54,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-09 15:04:54,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-12-09 15:04:54,827 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:04:54,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 846 transitions, 10499 flow. Second operand has 20 states, 20 states have (on average 107.65) internal successors, (2153), 20 states have internal predecessors, (2153), 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) [2023-12-09 15:04:54,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:04:54,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:04:54,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:04:56,663 INFO L124 PetriNetUnfolderBase]: 3110/6384 cut-off events. [2023-12-09 15:04:56,664 INFO L125 PetriNetUnfolderBase]: For 26818/27126 co-relation queries the response was YES. [2023-12-09 15:04:56,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38936 conditions, 6384 events. 3110/6384 cut-off events. For 26818/27126 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 48602 event pairs, 139 based on Foata normal form. 7/5891 useless extension candidates. Maximal degree in co-relation 32880. Up to 2871 conditions per place. [2023-12-09 15:04:56,781 INFO L140 encePairwiseOnDemand]: 147/178 looper letters, 561 selfloop transitions, 151 changer transitions 163/977 dead transitions. [2023-12-09 15:04:56,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 977 transitions, 13676 flow [2023-12-09 15:04:56,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-09 15:04:56,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-12-09 15:04:56,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 4248 transitions. [2023-12-09 15:04:56,787 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6280307510348906 [2023-12-09 15:04:56,787 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 4248 transitions. [2023-12-09 15:04:56,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 4248 transitions. [2023-12-09 15:04:56,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:04:56,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 4248 transitions. [2023-12-09 15:04:56,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 111.78947368421052) internal successors, (4248), 38 states have internal predecessors, (4248), 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) [2023-12-09 15:04:56,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 178.0) internal successors, (6942), 39 states have internal predecessors, (6942), 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) [2023-12-09 15:04:56,803 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 178.0) internal successors, (6942), 39 states have internal predecessors, (6942), 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) [2023-12-09 15:04:56,803 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 222 predicate places. [2023-12-09 15:04:56,803 INFO L500 AbstractCegarLoop]: Abstraction has has 381 places, 977 transitions, 13676 flow [2023-12-09 15:04:56,804 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 107.65) internal successors, (2153), 20 states have internal predecessors, (2153), 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) [2023-12-09 15:04:56,804 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:04:56,804 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:04:56,804 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-09 15:04:56,804 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:04:56,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:04:56,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1441440790, now seen corresponding path program 3 times [2023-12-09 15:04:56,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:04:56,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129596089] [2023-12-09 15:04:56,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:04:56,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:04:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:04:57,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:04:57,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:04:57,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129596089] [2023-12-09 15:04:57,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129596089] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:04:57,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:04:57,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-09 15:04:57,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661857732] [2023-12-09 15:04:57,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:04:57,402 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-09 15:04:57,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:04:57,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-09 15:04:57,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2023-12-09 15:04:57,404 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:04:57,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 977 transitions, 13676 flow. Second operand has 20 states, 20 states have (on average 107.65) internal successors, (2153), 20 states have internal predecessors, (2153), 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) [2023-12-09 15:04:57,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:04:57,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:04:57,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:04:59,024 INFO L124 PetriNetUnfolderBase]: 3334/6789 cut-off events. [2023-12-09 15:04:59,024 INFO L125 PetriNetUnfolderBase]: For 30470/30937 co-relation queries the response was YES. [2023-12-09 15:04:59,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46924 conditions, 6789 events. 3334/6789 cut-off events. For 30470/30937 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 52176 event pairs, 247 based on Foata normal form. 13/6268 useless extension candidates. Maximal degree in co-relation 40049. Up to 3085 conditions per place. [2023-12-09 15:04:59,087 INFO L140 encePairwiseOnDemand]: 145/178 looper letters, 681 selfloop transitions, 149 changer transitions 168/1100 dead transitions. [2023-12-09 15:04:59,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 1100 transitions, 17232 flow [2023-12-09 15:04:59,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-09 15:04:59,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-12-09 15:04:59,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3699 transitions. [2023-12-09 15:04:59,091 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6297242083758938 [2023-12-09 15:04:59,091 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3699 transitions. [2023-12-09 15:04:59,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3699 transitions. [2023-12-09 15:04:59,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:04:59,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3699 transitions. [2023-12-09 15:04:59,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 112.0909090909091) internal successors, (3699), 33 states have internal predecessors, (3699), 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) [2023-12-09 15:04:59,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 178.0) internal successors, (6052), 34 states have internal predecessors, (6052), 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) [2023-12-09 15:04:59,101 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 178.0) internal successors, (6052), 34 states have internal predecessors, (6052), 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) [2023-12-09 15:04:59,101 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 254 predicate places. [2023-12-09 15:04:59,101 INFO L500 AbstractCegarLoop]: Abstraction has has 413 places, 1100 transitions, 17232 flow [2023-12-09 15:04:59,102 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 107.65) internal successors, (2153), 20 states have internal predecessors, (2153), 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) [2023-12-09 15:04:59,102 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:04:59,102 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:04:59,102 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-09 15:04:59,102 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:04:59,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:04:59,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1875972748, now seen corresponding path program 4 times [2023-12-09 15:04:59,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:04:59,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134085516] [2023-12-09 15:04:59,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:04:59,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:04:59,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:04:59,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:04:59,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:04:59,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134085516] [2023-12-09 15:04:59,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134085516] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:04:59,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167987983] [2023-12-09 15:04:59,621 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:04:59,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:04:59,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:04:59,637 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:04:59,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-09 15:04:59,737 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:04:59,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:04:59,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-09 15:04:59,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:05:00,107 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-12-09 15:05:00,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2023-12-09 15:05:00,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:05:00,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:05:00,238 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-12-09 15:05:00,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2023-12-09 15:05:00,467 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:05:00,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167987983] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:05:00,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:05:00,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 9, 9] total 30 [2023-12-09 15:05:00,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188847084] [2023-12-09 15:05:00,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:05:00,469 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-09 15:05:00,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:05:00,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-09 15:05:00,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=728, Unknown=0, NotChecked=0, Total=870 [2023-12-09 15:05:00,472 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:05:00,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 1100 transitions, 17232 flow. Second operand has 30 states, 30 states have (on average 109.53333333333333) internal successors, (3286), 30 states have internal predecessors, (3286), 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) [2023-12-09 15:05:00,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:05:00,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:05:00,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:05:03,097 INFO L124 PetriNetUnfolderBase]: 3721/7520 cut-off events. [2023-12-09 15:05:03,097 INFO L125 PetriNetUnfolderBase]: For 37432/38015 co-relation queries the response was YES. [2023-12-09 15:05:03,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58064 conditions, 7520 events. 3721/7520 cut-off events. For 37432/38015 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 58959 event pairs, 133 based on Foata normal form. 26/6957 useless extension candidates. Maximal degree in co-relation 50060. Up to 3610 conditions per place. [2023-12-09 15:05:03,151 INFO L140 encePairwiseOnDemand]: 142/178 looper letters, 742 selfloop transitions, 270 changer transitions 181/1295 dead transitions. [2023-12-09 15:05:03,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 1295 transitions, 22659 flow [2023-12-09 15:05:03,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-09 15:05:03,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2023-12-09 15:05:03,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 5969 transitions. [2023-12-09 15:05:03,157 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6327114691541234 [2023-12-09 15:05:03,158 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 5969 transitions. [2023-12-09 15:05:03,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 5969 transitions. [2023-12-09 15:05:03,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:05:03,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 5969 transitions. [2023-12-09 15:05:03,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 112.62264150943396) internal successors, (5969), 53 states have internal predecessors, (5969), 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) [2023-12-09 15:05:03,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 178.0) internal successors, (9612), 54 states have internal predecessors, (9612), 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) [2023-12-09 15:05:03,174 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 178.0) internal successors, (9612), 54 states have internal predecessors, (9612), 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) [2023-12-09 15:05:03,176 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 306 predicate places. [2023-12-09 15:05:03,176 INFO L500 AbstractCegarLoop]: Abstraction has has 465 places, 1295 transitions, 22659 flow [2023-12-09 15:05:03,176 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 109.53333333333333) internal successors, (3286), 30 states have internal predecessors, (3286), 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) [2023-12-09 15:05:03,176 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:05:03,177 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:05:03,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-09 15:05:03,381 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:05:03,381 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:05:03,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:05:03,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1126506192, now seen corresponding path program 5 times [2023-12-09 15:05:03,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:05:03,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899903835] [2023-12-09 15:05:03,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:05:03,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:05:03,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:05:04,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:05:04,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:05:04,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899903835] [2023-12-09 15:05:04,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899903835] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:05:04,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:05:04,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-09 15:05:04,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187369942] [2023-12-09 15:05:04,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:05:04,062 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:05:04,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:05:04,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:05:04,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:05:04,064 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:05:04,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 1295 transitions, 22659 flow. Second operand has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:05:04,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:05:04,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:05:04,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:05:06,006 INFO L124 PetriNetUnfolderBase]: 3711/7538 cut-off events. [2023-12-09 15:05:06,006 INFO L125 PetriNetUnfolderBase]: For 41110/41756 co-relation queries the response was YES. [2023-12-09 15:05:06,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64428 conditions, 7538 events. 3711/7538 cut-off events. For 41110/41756 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 59285 event pairs, 181 based on Foata normal form. 12/6968 useless extension candidates. Maximal degree in co-relation 55721. Up to 3610 conditions per place. [2023-12-09 15:05:06,076 INFO L140 encePairwiseOnDemand]: 144/178 looper letters, 856 selfloop transitions, 152 changer transitions 181/1291 dead transitions. [2023-12-09 15:05:06,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 1291 transitions, 24917 flow [2023-12-09 15:05:06,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-09 15:05:06,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-12-09 15:05:06,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3246 transitions. [2023-12-09 15:05:06,079 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6288260364199922 [2023-12-09 15:05:06,079 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3246 transitions. [2023-12-09 15:05:06,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3246 transitions. [2023-12-09 15:05:06,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:05:06,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3246 transitions. [2023-12-09 15:05:06,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 111.93103448275862) internal successors, (3246), 29 states have internal predecessors, (3246), 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) [2023-12-09 15:05:06,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 178.0) internal successors, (5340), 30 states have internal predecessors, (5340), 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) [2023-12-09 15:05:06,087 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 178.0) internal successors, (5340), 30 states have internal predecessors, (5340), 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) [2023-12-09 15:05:06,087 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 334 predicate places. [2023-12-09 15:05:06,088 INFO L500 AbstractCegarLoop]: Abstraction has has 493 places, 1291 transitions, 24917 flow [2023-12-09 15:05:06,088 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:05:06,088 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:05:06,088 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:05:06,088 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-09 15:05:06,088 INFO L425 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:05:06,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:05:06,089 INFO L85 PathProgramCache]: Analyzing trace with hash 746628756, now seen corresponding path program 6 times [2023-12-09 15:05:06,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:05:06,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156016894] [2023-12-09 15:05:06,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:05:06,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:05:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:05:06,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:05:06,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:05:06,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156016894] [2023-12-09 15:05:06,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156016894] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:05:06,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:05:06,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-09 15:05:06,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641448368] [2023-12-09 15:05:06,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:05:06,663 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-09 15:05:06,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:05:06,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-09 15:05:06,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-12-09 15:05:06,665 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:05:06,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 1291 transitions, 24917 flow. Second operand has 20 states, 20 states have (on average 107.65) internal successors, (2153), 20 states have internal predecessors, (2153), 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) [2023-12-09 15:05:06,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:05:06,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:05:06,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:05:08,752 INFO L124 PetriNetUnfolderBase]: 3763/7615 cut-off events. [2023-12-09 15:05:08,752 INFO L125 PetriNetUnfolderBase]: For 46601/47357 co-relation queries the response was YES. [2023-12-09 15:05:08,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71927 conditions, 7615 events. 3763/7615 cut-off events. For 46601/47357 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 60296 event pairs, 137 based on Foata normal form. 14/7071 useless extension candidates. Maximal degree in co-relation 62383. Up to 3718 conditions per place. [2023-12-09 15:05:08,817 INFO L140 encePairwiseOnDemand]: 145/178 looper letters, 897 selfloop transitions, 164 changer transitions 181/1344 dead transitions. [2023-12-09 15:05:08,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 1344 transitions, 28467 flow [2023-12-09 15:05:08,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-09 15:05:08,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-12-09 15:05:08,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3367 transitions. [2023-12-09 15:05:08,820 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6305243445692884 [2023-12-09 15:05:08,820 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3367 transitions. [2023-12-09 15:05:08,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3367 transitions. [2023-12-09 15:05:08,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:05:08,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3367 transitions. [2023-12-09 15:05:08,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 112.23333333333333) internal successors, (3367), 30 states have internal predecessors, (3367), 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) [2023-12-09 15:05:08,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 178.0) internal successors, (5518), 31 states have internal predecessors, (5518), 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) [2023-12-09 15:05:08,828 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 178.0) internal successors, (5518), 31 states have internal predecessors, (5518), 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) [2023-12-09 15:05:08,829 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 363 predicate places. [2023-12-09 15:05:08,829 INFO L500 AbstractCegarLoop]: Abstraction has has 522 places, 1344 transitions, 28467 flow [2023-12-09 15:05:08,829 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 107.65) internal successors, (2153), 20 states have internal predecessors, (2153), 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) [2023-12-09 15:05:08,830 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:05:08,830 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:05:08,830 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-09 15:05:08,830 INFO L425 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:05:08,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:05:08,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1367740172, now seen corresponding path program 7 times [2023-12-09 15:05:08,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:05:08,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246649710] [2023-12-09 15:05:08,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:05:08,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:05:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:05:09,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:05:09,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:05:09,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246649710] [2023-12-09 15:05:09,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246649710] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:05:09,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:05:09,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-09 15:05:09,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591512009] [2023-12-09 15:05:09,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:05:09,406 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:05:09,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:05:09,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:05:09,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:05:09,408 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:05:09,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 1344 transitions, 28467 flow. Second operand has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:05:09,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:05:09,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:05:09,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:05:11,559 INFO L124 PetriNetUnfolderBase]: 3704/7494 cut-off events. [2023-12-09 15:05:11,559 INFO L125 PetriNetUnfolderBase]: For 50565/51429 co-relation queries the response was YES. [2023-12-09 15:05:11,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77355 conditions, 7494 events. 3704/7494 cut-off events. For 50565/51429 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 59091 event pairs, 137 based on Foata normal form. 13/6957 useless extension candidates. Maximal degree in co-relation 67204. Up to 3648 conditions per place. [2023-12-09 15:05:11,631 INFO L140 encePairwiseOnDemand]: 144/178 looper letters, 905 selfloop transitions, 133 changer transitions 187/1327 dead transitions. [2023-12-09 15:05:11,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 1327 transitions, 30531 flow [2023-12-09 15:05:11,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-09 15:05:11,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-12-09 15:05:11,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3250 transitions. [2023-12-09 15:05:11,633 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6296009298721426 [2023-12-09 15:05:11,633 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3250 transitions. [2023-12-09 15:05:11,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3250 transitions. [2023-12-09 15:05:11,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:05:11,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3250 transitions. [2023-12-09 15:05:11,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 112.06896551724138) internal successors, (3250), 29 states have internal predecessors, (3250), 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) [2023-12-09 15:05:11,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 178.0) internal successors, (5340), 30 states have internal predecessors, (5340), 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) [2023-12-09 15:05:11,640 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 178.0) internal successors, (5340), 30 states have internal predecessors, (5340), 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) [2023-12-09 15:05:11,640 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 391 predicate places. [2023-12-09 15:05:11,640 INFO L500 AbstractCegarLoop]: Abstraction has has 550 places, 1327 transitions, 30531 flow [2023-12-09 15:05:11,641 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:05:11,641 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:05:11,641 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:05:11,641 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-09 15:05:11,641 INFO L425 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:05:11,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:05:11,642 INFO L85 PathProgramCache]: Analyzing trace with hash 545227608, now seen corresponding path program 3 times [2023-12-09 15:05:11,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:05:11,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676235132] [2023-12-09 15:05:11,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:05:11,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:05:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:05:12,281 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:05:12,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:05:12,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676235132] [2023-12-09 15:05:12,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676235132] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:05:12,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:05:12,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-09 15:05:12,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880569676] [2023-12-09 15:05:12,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:05:12,282 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:05:12,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:05:12,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:05:12,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:05:12,283 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:05:12,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 1327 transitions, 30531 flow. Second operand has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:05:12,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:05:12,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:05:12,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:05:14,464 INFO L124 PetriNetUnfolderBase]: 3713/7537 cut-off events. [2023-12-09 15:05:14,464 INFO L125 PetriNetUnfolderBase]: For 56124/57068 co-relation queries the response was YES. [2023-12-09 15:05:14,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83993 conditions, 7537 events. 3713/7537 cut-off events. For 56124/57068 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 59637 event pairs, 137 based on Foata normal form. 10/6997 useless extension candidates. Maximal degree in co-relation 73087. Up to 3648 conditions per place. [2023-12-09 15:05:14,608 INFO L140 encePairwiseOnDemand]: 145/178 looper letters, 916 selfloop transitions, 121 changer transitions 196/1335 dead transitions. [2023-12-09 15:05:14,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 1335 transitions, 33110 flow [2023-12-09 15:05:14,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-09 15:05:14,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-12-09 15:05:14,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3241 transitions. [2023-12-09 15:05:14,613 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6278574196048043 [2023-12-09 15:05:14,613 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3241 transitions. [2023-12-09 15:05:14,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3241 transitions. [2023-12-09 15:05:14,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:05:14,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3241 transitions. [2023-12-09 15:05:14,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 111.75862068965517) internal successors, (3241), 29 states have internal predecessors, (3241), 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) [2023-12-09 15:05:14,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 178.0) internal successors, (5340), 30 states have internal predecessors, (5340), 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) [2023-12-09 15:05:14,619 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 178.0) internal successors, (5340), 30 states have internal predecessors, (5340), 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) [2023-12-09 15:05:14,619 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 419 predicate places. [2023-12-09 15:05:14,619 INFO L500 AbstractCegarLoop]: Abstraction has has 578 places, 1335 transitions, 33110 flow [2023-12-09 15:05:14,619 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:05:14,619 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:05:14,620 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:05:14,620 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-09 15:05:14,620 INFO L425 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:05:14,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:05:14,620 INFO L85 PathProgramCache]: Analyzing trace with hash 401810556, now seen corresponding path program 4 times [2023-12-09 15:05:14,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:05:14,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514567954] [2023-12-09 15:05:14,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:05:14,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:05:14,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:05:15,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:05:15,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:05:15,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514567954] [2023-12-09 15:05:15,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514567954] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:05:15,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:05:15,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-09 15:05:15,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176967027] [2023-12-09 15:05:15,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:05:15,118 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:05:15,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:05:15,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:05:15,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:05:15,119 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:05:15,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 578 places, 1335 transitions, 33110 flow. Second operand has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:05:15,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:05:15,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:05:15,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:05:17,703 INFO L124 PetriNetUnfolderBase]: 3731/7602 cut-off events. [2023-12-09 15:05:17,703 INFO L125 PetriNetUnfolderBase]: For 63607/64761 co-relation queries the response was YES. [2023-12-09 15:05:17,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90936 conditions, 7602 events. 3731/7602 cut-off events. For 63607/64761 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 60692 event pairs, 141 based on Foata normal form. 12/7064 useless extension candidates. Maximal degree in co-relation 79143. Up to 3648 conditions per place. [2023-12-09 15:05:17,783 INFO L140 encePairwiseOnDemand]: 145/178 looper letters, 916 selfloop transitions, 115 changer transitions 217/1350 dead transitions. [2023-12-09 15:05:17,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 1350 transitions, 35931 flow [2023-12-09 15:05:17,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-09 15:05:17,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-12-09 15:05:17,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3569 transitions. [2023-12-09 15:05:17,786 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6265800561797753 [2023-12-09 15:05:17,786 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3569 transitions. [2023-12-09 15:05:17,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3569 transitions. [2023-12-09 15:05:17,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:05:17,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3569 transitions. [2023-12-09 15:05:17,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 111.53125) internal successors, (3569), 32 states have internal predecessors, (3569), 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) [2023-12-09 15:05:17,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 178.0) internal successors, (5874), 33 states have internal predecessors, (5874), 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) [2023-12-09 15:05:17,793 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 178.0) internal successors, (5874), 33 states have internal predecessors, (5874), 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) [2023-12-09 15:05:17,793 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 450 predicate places. [2023-12-09 15:05:17,794 INFO L500 AbstractCegarLoop]: Abstraction has has 609 places, 1350 transitions, 35931 flow [2023-12-09 15:05:17,794 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:05:17,794 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:05:17,794 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:05:17,794 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-09 15:05:17,794 INFO L425 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:05:17,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:05:17,794 INFO L85 PathProgramCache]: Analyzing trace with hash 2020678488, now seen corresponding path program 5 times [2023-12-09 15:05:17,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:05:17,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665651225] [2023-12-09 15:05:17,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:05:17,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:05:17,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:05:18,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:05:18,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:05:18,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665651225] [2023-12-09 15:05:18,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665651225] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:05:18,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:05:18,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-09 15:05:18,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703120067] [2023-12-09 15:05:18,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:05:18,336 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-09 15:05:18,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:05:18,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-09 15:05:18,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2023-12-09 15:05:18,337 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:05:18,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 1350 transitions, 35931 flow. Second operand has 20 states, 20 states have (on average 107.65) internal successors, (2153), 20 states have internal predecessors, (2153), 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) [2023-12-09 15:05:18,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:05:18,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:05:18,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:05:20,692 INFO L124 PetriNetUnfolderBase]: 3776/7673 cut-off events. [2023-12-09 15:05:20,707 INFO L125 PetriNetUnfolderBase]: For 69888/71203 co-relation queries the response was YES. [2023-12-09 15:05:20,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98453 conditions, 7673 events. 3776/7673 cut-off events. For 69888/71203 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 61129 event pairs, 133 based on Foata normal form. 12/7130 useless extension candidates. Maximal degree in co-relation 85947. Up to 3648 conditions per place. [2023-12-09 15:05:20,884 INFO L140 encePairwiseOnDemand]: 145/178 looper letters, 925 selfloop transitions, 141 changer transitions 217/1385 dead transitions. [2023-12-09 15:05:20,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 638 places, 1385 transitions, 39409 flow [2023-12-09 15:05:20,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-09 15:05:20,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-12-09 15:05:20,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3368 transitions. [2023-12-09 15:05:20,907 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6307116104868914 [2023-12-09 15:05:20,907 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3368 transitions. [2023-12-09 15:05:20,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3368 transitions. [2023-12-09 15:05:20,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:05:20,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3368 transitions. [2023-12-09 15:05:20,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 112.26666666666667) internal successors, (3368), 30 states have internal predecessors, (3368), 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) [2023-12-09 15:05:20,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 178.0) internal successors, (5518), 31 states have internal predecessors, (5518), 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) [2023-12-09 15:05:20,914 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 178.0) internal successors, (5518), 31 states have internal predecessors, (5518), 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) [2023-12-09 15:05:20,914 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 479 predicate places. [2023-12-09 15:05:20,914 INFO L500 AbstractCegarLoop]: Abstraction has has 638 places, 1385 transitions, 39409 flow [2023-12-09 15:05:20,915 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 107.65) internal successors, (2153), 20 states have internal predecessors, (2153), 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) [2023-12-09 15:05:20,915 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:05:20,915 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:05:20,915 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-09 15:05:20,915 INFO L425 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:05:20,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:05:20,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1303868910, now seen corresponding path program 8 times [2023-12-09 15:05:20,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:05:20,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403614268] [2023-12-09 15:05:20,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:05:20,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:05:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:05:21,393 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:05:21,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:05:21,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403614268] [2023-12-09 15:05:21,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403614268] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:05:21,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:05:21,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-09 15:05:21,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643111833] [2023-12-09 15:05:21,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:05:21,394 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:05:21,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:05:21,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:05:21,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:05:21,395 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:05:21,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 638 places, 1385 transitions, 39409 flow. Second operand has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:05:21,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:05:21,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:05:21,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:05:24,152 INFO L124 PetriNetUnfolderBase]: 3901/7873 cut-off events. [2023-12-09 15:05:24,152 INFO L125 PetriNetUnfolderBase]: For 78081/79479 co-relation queries the response was YES. [2023-12-09 15:05:24,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107777 conditions, 7873 events. 3901/7873 cut-off events. For 78081/79479 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 62424 event pairs, 133 based on Foata normal form. 11/7303 useless extension candidates. Maximal degree in co-relation 94549. Up to 3652 conditions per place. [2023-12-09 15:05:24,245 INFO L140 encePairwiseOnDemand]: 144/178 looper letters, 982 selfloop transitions, 178 changer transitions 227/1489 dead transitions. [2023-12-09 15:05:24,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 667 places, 1489 transitions, 44919 flow [2023-12-09 15:05:24,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-09 15:05:24,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-12-09 15:05:24,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3360 transitions. [2023-12-09 15:05:24,248 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6292134831460674 [2023-12-09 15:05:24,248 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3360 transitions. [2023-12-09 15:05:24,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3360 transitions. [2023-12-09 15:05:24,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:05:24,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3360 transitions. [2023-12-09 15:05:24,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 112.0) internal successors, (3360), 30 states have internal predecessors, (3360), 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) [2023-12-09 15:05:24,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 178.0) internal successors, (5518), 31 states have internal predecessors, (5518), 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) [2023-12-09 15:05:24,254 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 178.0) internal successors, (5518), 31 states have internal predecessors, (5518), 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) [2023-12-09 15:05:24,254 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 508 predicate places. [2023-12-09 15:05:24,255 INFO L500 AbstractCegarLoop]: Abstraction has has 667 places, 1489 transitions, 44919 flow [2023-12-09 15:05:24,255 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:05:24,255 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:05:24,255 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:05:24,255 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-09 15:05:24,255 INFO L425 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:05:24,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:05:24,255 INFO L85 PathProgramCache]: Analyzing trace with hash -23758020, now seen corresponding path program 9 times [2023-12-09 15:05:24,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:05:24,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4789637] [2023-12-09 15:05:24,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:05:24,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:05:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:05:24,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:05:24,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:05:24,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4789637] [2023-12-09 15:05:24,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4789637] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:05:24,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:05:24,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-09 15:05:24,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849870745] [2023-12-09 15:05:24,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:05:24,787 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:05:24,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:05:24,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:05:24,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:05:24,788 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:05:24,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 667 places, 1489 transitions, 44919 flow. Second operand has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:05:24,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:05:24,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:05:24,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:05:27,401 INFO L124 PetriNetUnfolderBase]: 3932/7941 cut-off events. [2023-12-09 15:05:27,401 INFO L125 PetriNetUnfolderBase]: For 83819/85379 co-relation queries the response was YES. [2023-12-09 15:05:27,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115395 conditions, 7941 events. 3932/7941 cut-off events. For 83819/85379 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 63333 event pairs, 133 based on Foata normal form. 12/7368 useless extension candidates. Maximal degree in co-relation 101455. Up to 3652 conditions per place. [2023-12-09 15:05:27,496 INFO L140 encePairwiseOnDemand]: 145/178 looper letters, 1000 selfloop transitions, 162 changer transitions 247/1511 dead transitions. [2023-12-09 15:05:27,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 698 places, 1511 transitions, 48297 flow [2023-12-09 15:05:27,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-09 15:05:27,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-12-09 15:05:27,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3571 transitions. [2023-12-09 15:05:27,499 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6269311797752809 [2023-12-09 15:05:27,499 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3571 transitions. [2023-12-09 15:05:27,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3571 transitions. [2023-12-09 15:05:27,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:05:27,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3571 transitions. [2023-12-09 15:05:27,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 111.59375) internal successors, (3571), 32 states have internal predecessors, (3571), 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) [2023-12-09 15:05:27,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 178.0) internal successors, (5874), 33 states have internal predecessors, (5874), 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) [2023-12-09 15:05:27,506 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 178.0) internal successors, (5874), 33 states have internal predecessors, (5874), 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) [2023-12-09 15:05:27,506 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 539 predicate places. [2023-12-09 15:05:27,507 INFO L500 AbstractCegarLoop]: Abstraction has has 698 places, 1511 transitions, 48297 flow [2023-12-09 15:05:27,507 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:05:27,507 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:05:27,507 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:05:27,507 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-09 15:05:27,507 INFO L425 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:05:27,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:05:27,507 INFO L85 PathProgramCache]: Analyzing trace with hash 695368586, now seen corresponding path program 10 times [2023-12-09 15:05:27,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:05:27,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117750783] [2023-12-09 15:05:27,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:05:27,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:05:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:05:28,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:05:28,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:05:28,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117750783] [2023-12-09 15:05:28,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117750783] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:05:28,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:05:28,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-09 15:05:28,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064527746] [2023-12-09 15:05:28,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:05:28,101 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-09 15:05:28,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:05:28,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-09 15:05:28,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2023-12-09 15:05:28,102 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:05:28,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 698 places, 1511 transitions, 48297 flow. Second operand has 20 states, 20 states have (on average 107.65) internal successors, (2153), 20 states have internal predecessors, (2153), 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) [2023-12-09 15:05:28,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:05:28,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:05:28,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:05:31,030 INFO L124 PetriNetUnfolderBase]: 4246/8499 cut-off events. [2023-12-09 15:05:31,030 INFO L125 PetriNetUnfolderBase]: For 98270/100033 co-relation queries the response was YES. [2023-12-09 15:05:31,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131068 conditions, 8499 events. 4246/8499 cut-off events. For 98270/100033 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 68380 event pairs, 141 based on Foata normal form. 14/7873 useless extension candidates. Maximal degree in co-relation 115455. Up to 4098 conditions per place. [2023-12-09 15:05:31,139 INFO L140 encePairwiseOnDemand]: 145/178 looper letters, 1061 selfloop transitions, 205 changer transitions 247/1615 dead transitions. [2023-12-09 15:05:31,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 732 places, 1615 transitions, 54859 flow [2023-12-09 15:05:31,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-09 15:05:31,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-12-09 15:05:31,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3942 transitions. [2023-12-09 15:05:31,142 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.632744783306581 [2023-12-09 15:05:31,142 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3942 transitions. [2023-12-09 15:05:31,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3942 transitions. [2023-12-09 15:05:31,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:05:31,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3942 transitions. [2023-12-09 15:05:31,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 112.62857142857143) internal successors, (3942), 35 states have internal predecessors, (3942), 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) [2023-12-09 15:05:31,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 178.0) internal successors, (6408), 36 states have internal predecessors, (6408), 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) [2023-12-09 15:05:31,165 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 178.0) internal successors, (6408), 36 states have internal predecessors, (6408), 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) [2023-12-09 15:05:31,166 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 573 predicate places. [2023-12-09 15:05:31,166 INFO L500 AbstractCegarLoop]: Abstraction has has 732 places, 1615 transitions, 54859 flow [2023-12-09 15:05:31,166 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 107.65) internal successors, (2153), 20 states have internal predecessors, (2153), 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) [2023-12-09 15:05:31,166 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:05:31,166 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:05:31,166 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-09 15:05:31,166 INFO L425 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:05:31,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:05:31,167 INFO L85 PathProgramCache]: Analyzing trace with hash 252444720, now seen corresponding path program 11 times [2023-12-09 15:05:31,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:05:31,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874203496] [2023-12-09 15:05:31,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:05:31,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:05:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:05:31,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:05:31,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:05:31,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874203496] [2023-12-09 15:05:31,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874203496] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:05:31,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:05:31,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-09 15:05:31,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346840315] [2023-12-09 15:05:31,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:05:31,755 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:05:31,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:05:31,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:05:31,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:05:31,757 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:05:31,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 732 places, 1615 transitions, 54859 flow. Second operand has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:05:31,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:05:31,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:05:31,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:05:34,776 INFO L124 PetriNetUnfolderBase]: 4242/8565 cut-off events. [2023-12-09 15:05:34,776 INFO L125 PetriNetUnfolderBase]: For 107674/109538 co-relation queries the response was YES. [2023-12-09 15:05:34,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138437 conditions, 8565 events. 4242/8565 cut-off events. For 107674/109538 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 69621 event pairs, 177 based on Foata normal form. 13/7944 useless extension candidates. Maximal degree in co-relation 122046. Up to 4098 conditions per place. [2023-12-09 15:05:34,885 INFO L140 encePairwiseOnDemand]: 144/178 looper letters, 1078 selfloop transitions, 191 changer transitions 247/1618 dead transitions. [2023-12-09 15:05:34,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 760 places, 1618 transitions, 57923 flow [2023-12-09 15:05:34,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-09 15:05:34,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-12-09 15:05:34,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3246 transitions. [2023-12-09 15:05:34,888 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6288260364199922 [2023-12-09 15:05:34,888 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3246 transitions. [2023-12-09 15:05:34,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3246 transitions. [2023-12-09 15:05:34,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:05:34,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3246 transitions. [2023-12-09 15:05:34,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 111.93103448275862) internal successors, (3246), 29 states have internal predecessors, (3246), 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) [2023-12-09 15:05:34,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 178.0) internal successors, (5340), 30 states have internal predecessors, (5340), 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) [2023-12-09 15:05:34,918 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 178.0) internal successors, (5340), 30 states have internal predecessors, (5340), 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) [2023-12-09 15:05:34,919 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 601 predicate places. [2023-12-09 15:05:34,919 INFO L500 AbstractCegarLoop]: Abstraction has has 760 places, 1618 transitions, 57923 flow [2023-12-09 15:05:34,919 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:05:34,919 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:05:34,919 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:05:34,919 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-09 15:05:34,919 INFO L425 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:05:34,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:05:34,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1418789872, now seen corresponding path program 12 times [2023-12-09 15:05:34,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:05:34,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683547217] [2023-12-09 15:05:34,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:05:34,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:05:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:05:35,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:05:35,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:05:35,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683547217] [2023-12-09 15:05:35,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683547217] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:05:35,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:05:35,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-09 15:05:35,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422990935] [2023-12-09 15:05:35,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:05:35,435 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-09 15:05:35,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:05:35,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-09 15:05:35,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2023-12-09 15:05:35,436 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:05:35,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 760 places, 1618 transitions, 57923 flow. Second operand has 20 states, 20 states have (on average 107.65) internal successors, (2153), 20 states have internal predecessors, (2153), 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) [2023-12-09 15:05:35,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:05:35,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:05:35,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:05:38,781 INFO L124 PetriNetUnfolderBase]: 4362/8769 cut-off events. [2023-12-09 15:05:38,782 INFO L125 PetriNetUnfolderBase]: For 122454/124522 co-relation queries the response was YES. [2023-12-09 15:05:38,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149640 conditions, 8769 events. 4362/8769 cut-off events. For 122454/124522 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 71423 event pairs, 157 based on Foata normal form. 13/8138 useless extension candidates. Maximal degree in co-relation 131999. Up to 4302 conditions per place. [2023-12-09 15:05:38,900 INFO L140 encePairwiseOnDemand]: 145/178 looper letters, 1104 selfloop transitions, 205 changer transitions 247/1658 dead transitions. [2023-12-09 15:05:38,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 789 places, 1658 transitions, 62519 flow [2023-12-09 15:05:38,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-09 15:05:38,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-12-09 15:05:38,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3367 transitions. [2023-12-09 15:05:38,921 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6305243445692884 [2023-12-09 15:05:38,921 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3367 transitions. [2023-12-09 15:05:38,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3367 transitions. [2023-12-09 15:05:38,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:05:38,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3367 transitions. [2023-12-09 15:05:38,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 112.23333333333333) internal successors, (3367), 30 states have internal predecessors, (3367), 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) [2023-12-09 15:05:38,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 178.0) internal successors, (5518), 31 states have internal predecessors, (5518), 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) [2023-12-09 15:05:38,926 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 178.0) internal successors, (5518), 31 states have internal predecessors, (5518), 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) [2023-12-09 15:05:38,927 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 630 predicate places. [2023-12-09 15:05:38,927 INFO L500 AbstractCegarLoop]: Abstraction has has 789 places, 1658 transitions, 62519 flow [2023-12-09 15:05:38,927 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 107.65) internal successors, (2153), 20 states have internal predecessors, (2153), 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) [2023-12-09 15:05:38,927 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:05:38,927 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:05:38,927 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-09 15:05:38,927 INFO L425 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:05:38,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:05:38,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1394164872, now seen corresponding path program 13 times [2023-12-09 15:05:38,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:05:38,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784247368] [2023-12-09 15:05:38,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:05:38,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:05:38,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:05:39,473 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:05:39,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:05:39,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784247368] [2023-12-09 15:05:39,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784247368] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:05:39,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:05:39,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-09 15:05:39,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065717704] [2023-12-09 15:05:39,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:05:39,476 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:05:39,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:05:39,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:05:39,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:05:39,477 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:05:39,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 789 places, 1658 transitions, 62519 flow. Second operand has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:05:39,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:05:39,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:05:39,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:05:42,629 INFO L124 PetriNetUnfolderBase]: 4310/8684 cut-off events. [2023-12-09 15:05:42,629 INFO L125 PetriNetUnfolderBase]: For 128730/131004 co-relation queries the response was YES. [2023-12-09 15:05:42,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155458 conditions, 8684 events. 4310/8684 cut-off events. For 128730/131004 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 70742 event pairs, 189 based on Foata normal form. 12/8059 useless extension candidates. Maximal degree in co-relation 137189. Up to 4232 conditions per place. [2023-12-09 15:05:42,760 INFO L140 encePairwiseOnDemand]: 144/178 looper letters, 1132 selfloop transitions, 162 changer transitions 253/1649 dead transitions. [2023-12-09 15:05:42,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 818 places, 1649 transitions, 65209 flow [2023-12-09 15:05:42,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-09 15:05:42,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-12-09 15:05:42,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3358 transitions. [2023-12-09 15:05:42,762 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6288389513108614 [2023-12-09 15:05:42,762 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3358 transitions. [2023-12-09 15:05:42,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3358 transitions. [2023-12-09 15:05:42,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:05:42,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3358 transitions. [2023-12-09 15:05:42,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 111.93333333333334) internal successors, (3358), 30 states have internal predecessors, (3358), 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) [2023-12-09 15:05:42,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 178.0) internal successors, (5518), 31 states have internal predecessors, (5518), 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) [2023-12-09 15:05:42,768 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 178.0) internal successors, (5518), 31 states have internal predecessors, (5518), 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) [2023-12-09 15:05:42,768 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 659 predicate places. [2023-12-09 15:05:42,768 INFO L500 AbstractCegarLoop]: Abstraction has has 818 places, 1649 transitions, 65209 flow [2023-12-09 15:05:42,769 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:05:42,769 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:05:42,769 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:05:42,769 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-09 15:05:42,769 INFO L425 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:05:42,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:05:42,770 INFO L85 PathProgramCache]: Analyzing trace with hash -514998030, now seen corresponding path program 14 times [2023-12-09 15:05:42,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:05:42,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772146016] [2023-12-09 15:05:42,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:05:42,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:05:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:05:43,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:05:43,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:05:43,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772146016] [2023-12-09 15:05:43,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772146016] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:05:43,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:05:43,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-09 15:05:43,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52456371] [2023-12-09 15:05:43,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:05:43,354 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-09 15:05:43,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:05:43,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-09 15:05:43,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-12-09 15:05:43,355 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:05:43,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 818 places, 1649 transitions, 65209 flow. Second operand has 20 states, 20 states have (on average 107.65) internal successors, (2153), 20 states have internal predecessors, (2153), 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) [2023-12-09 15:05:43,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:05:43,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:05:43,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:05:46,438 INFO L124 PetriNetUnfolderBase]: 4322/8721 cut-off events. [2023-12-09 15:05:46,439 INFO L125 PetriNetUnfolderBase]: For 143256/145646 co-relation queries the response was YES. [2023-12-09 15:05:46,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163754 conditions, 8721 events. 4322/8721 cut-off events. For 143256/145646 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 71138 event pairs, 133 based on Foata normal form. 15/8125 useless extension candidates. Maximal degree in co-relation 144607. Up to 4272 conditions per place. [2023-12-09 15:05:46,562 INFO L140 encePairwiseOnDemand]: 145/178 looper letters, 1132 selfloop transitions, 196 changer transitions 253/1683 dead transitions. [2023-12-09 15:05:46,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 848 places, 1683 transitions, 69787 flow [2023-12-09 15:05:46,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-09 15:05:46,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-12-09 15:05:46,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3479 transitions. [2023-12-09 15:05:46,572 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6304820587169264 [2023-12-09 15:05:46,573 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3479 transitions. [2023-12-09 15:05:46,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3479 transitions. [2023-12-09 15:05:46,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:05:46,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3479 transitions. [2023-12-09 15:05:46,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 112.2258064516129) internal successors, (3479), 31 states have internal predecessors, (3479), 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) [2023-12-09 15:05:46,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 178.0) internal successors, (5696), 32 states have internal predecessors, (5696), 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) [2023-12-09 15:05:46,580 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 178.0) internal successors, (5696), 32 states have internal predecessors, (5696), 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) [2023-12-09 15:05:46,581 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 689 predicate places. [2023-12-09 15:05:46,581 INFO L500 AbstractCegarLoop]: Abstraction has has 848 places, 1683 transitions, 69787 flow [2023-12-09 15:05:46,581 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 107.65) internal successors, (2153), 20 states have internal predecessors, (2153), 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) [2023-12-09 15:05:46,581 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:05:46,581 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:05:46,581 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-09 15:05:46,581 INFO L425 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:05:46,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:05:46,582 INFO L85 PathProgramCache]: Analyzing trace with hash 603398346, now seen corresponding path program 15 times [2023-12-09 15:05:46,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:05:46,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75859273] [2023-12-09 15:05:46,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:05:46,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:05:46,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:05:47,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:05:47,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:05:47,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75859273] [2023-12-09 15:05:47,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75859273] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:05:47,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:05:47,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-09 15:05:47,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942119534] [2023-12-09 15:05:47,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:05:47,169 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:05:47,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:05:47,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:05:47,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:05:47,171 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:05:47,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 848 places, 1683 transitions, 69787 flow. Second operand has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:05:47,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:05:47,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:05:47,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:05:50,600 INFO L124 PetriNetUnfolderBase]: 4255/8560 cut-off events. [2023-12-09 15:05:50,600 INFO L125 PetriNetUnfolderBase]: For 150783/153241 co-relation queries the response was YES. [2023-12-09 15:05:50,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168784 conditions, 8560 events. 4255/8560 cut-off events. For 150783/153241 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 69251 event pairs, 129 based on Foata normal form. 14/7975 useless extension candidates. Maximal degree in co-relation 149035. Up to 4202 conditions per place. [2023-12-09 15:05:50,718 INFO L140 encePairwiseOnDemand]: 144/178 looper letters, 1152 selfloop transitions, 152 changer transitions 258/1664 dead transitions. [2023-12-09 15:05:50,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 877 places, 1664 transitions, 72071 flow [2023-12-09 15:05:50,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-09 15:05:50,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-12-09 15:05:50,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3362 transitions. [2023-12-09 15:05:50,721 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6295880149812734 [2023-12-09 15:05:50,721 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3362 transitions. [2023-12-09 15:05:50,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3362 transitions. [2023-12-09 15:05:50,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:05:50,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3362 transitions. [2023-12-09 15:05:50,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 112.06666666666666) internal successors, (3362), 30 states have internal predecessors, (3362), 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) [2023-12-09 15:05:50,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 178.0) internal successors, (5518), 31 states have internal predecessors, (5518), 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) [2023-12-09 15:05:50,726 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 178.0) internal successors, (5518), 31 states have internal predecessors, (5518), 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) [2023-12-09 15:05:50,726 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 718 predicate places. [2023-12-09 15:05:50,726 INFO L500 AbstractCegarLoop]: Abstraction has has 877 places, 1664 transitions, 72071 flow [2023-12-09 15:05:50,726 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:05:50,726 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:05:50,727 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:05:50,727 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-09 15:05:50,727 INFO L425 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:05:50,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:05:50,727 INFO L85 PathProgramCache]: Analyzing trace with hash 759051702, now seen corresponding path program 6 times [2023-12-09 15:05:50,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:05:50,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385160503] [2023-12-09 15:05:50,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:05:50,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:05:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:05:51,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:05:51,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:05:51,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385160503] [2023-12-09 15:05:51,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385160503] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:05:51,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:05:51,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-09 15:05:51,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480314479] [2023-12-09 15:05:51,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:05:51,268 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-09 15:05:51,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:05:51,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-09 15:05:51,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2023-12-09 15:05:51,269 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:05:51,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 877 places, 1664 transitions, 72071 flow. Second operand has 20 states, 20 states have (on average 107.65) internal successors, (2153), 20 states have internal predecessors, (2153), 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) [2023-12-09 15:05:51,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:05:51,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:05:51,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:05:54,582 INFO L124 PetriNetUnfolderBase]: 4300/8646 cut-off events. [2023-12-09 15:05:54,582 INFO L125 PetriNetUnfolderBase]: For 162179/164904 co-relation queries the response was YES. [2023-12-09 15:05:54,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177875 conditions, 8646 events. 4300/8646 cut-off events. For 162179/164904 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 70219 event pairs, 133 based on Foata normal form. 9/8052 useless extension candidates. Maximal degree in co-relation 157347. Up to 4202 conditions per place. [2023-12-09 15:05:54,714 INFO L140 encePairwiseOnDemand]: 145/178 looper letters, 1154 selfloop transitions, 171 changer transitions 258/1685 dead transitions. [2023-12-09 15:05:54,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 907 places, 1685 transitions, 76131 flow [2023-12-09 15:05:54,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-09 15:05:54,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-12-09 15:05:54,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3480 transitions. [2023-12-09 15:05:54,716 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6306632837984777 [2023-12-09 15:05:54,716 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3480 transitions. [2023-12-09 15:05:54,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3480 transitions. [2023-12-09 15:05:54,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:05:54,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3480 transitions. [2023-12-09 15:05:54,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 112.25806451612904) internal successors, (3480), 31 states have internal predecessors, (3480), 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) [2023-12-09 15:05:54,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 178.0) internal successors, (5696), 32 states have internal predecessors, (5696), 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) [2023-12-09 15:05:54,721 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 178.0) internal successors, (5696), 32 states have internal predecessors, (5696), 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) [2023-12-09 15:05:54,828 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 748 predicate places. [2023-12-09 15:05:54,828 INFO L500 AbstractCegarLoop]: Abstraction has has 907 places, 1685 transitions, 76131 flow [2023-12-09 15:05:54,829 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 107.65) internal successors, (2153), 20 states have internal predecessors, (2153), 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) [2023-12-09 15:05:54,829 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:05:54,829 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:05:54,829 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-09 15:05:54,829 INFO L425 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:05:54,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:05:54,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1904671168, now seen corresponding path program 7 times [2023-12-09 15:05:54,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:05:54,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252097890] [2023-12-09 15:05:54,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:05:54,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:05:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:05:55,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:05:55,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:05:55,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252097890] [2023-12-09 15:05:55,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252097890] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:05:55,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:05:55,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-09 15:05:55,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769640958] [2023-12-09 15:05:55,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:05:55,576 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:05:55,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:05:55,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:05:55,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:05:55,578 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:05:55,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 907 places, 1685 transitions, 76131 flow. Second operand has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:05:55,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:05:55,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:05:55,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:05:59,236 INFO L124 PetriNetUnfolderBase]: 4306/8664 cut-off events. [2023-12-09 15:05:59,236 INFO L125 PetriNetUnfolderBase]: For 176302/179174 co-relation queries the response was YES. [2023-12-09 15:05:59,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185594 conditions, 8664 events. 4306/8664 cut-off events. For 176302/179174 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 70488 event pairs, 133 based on Foata normal form. 11/8072 useless extension candidates. Maximal degree in co-relation 164183. Up to 4202 conditions per place. [2023-12-09 15:05:59,398 INFO L140 encePairwiseOnDemand]: 145/178 looper letters, 1180 selfloop transitions, 142 changer transitions 266/1690 dead transitions. [2023-12-09 15:05:59,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 935 places, 1690 transitions, 79480 flow [2023-12-09 15:05:59,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-09 15:05:59,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-12-09 15:05:59,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3240 transitions. [2023-12-09 15:05:59,403 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6276636962417668 [2023-12-09 15:05:59,403 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3240 transitions. [2023-12-09 15:05:59,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3240 transitions. [2023-12-09 15:05:59,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:05:59,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3240 transitions. [2023-12-09 15:05:59,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 111.72413793103448) internal successors, (3240), 29 states have internal predecessors, (3240), 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) [2023-12-09 15:05:59,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 178.0) internal successors, (5340), 30 states have internal predecessors, (5340), 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) [2023-12-09 15:05:59,409 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 178.0) internal successors, (5340), 30 states have internal predecessors, (5340), 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) [2023-12-09 15:05:59,409 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 776 predicate places. [2023-12-09 15:05:59,410 INFO L500 AbstractCegarLoop]: Abstraction has has 935 places, 1690 transitions, 79480 flow [2023-12-09 15:05:59,410 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:05:59,410 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:05:59,410 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:05:59,410 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-09 15:05:59,410 INFO L425 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:05:59,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:05:59,411 INFO L85 PathProgramCache]: Analyzing trace with hash 356680666, now seen corresponding path program 8 times [2023-12-09 15:05:59,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:05:59,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955591781] [2023-12-09 15:05:59,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:05:59,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:05:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:05:59,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:05:59,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:05:59,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955591781] [2023-12-09 15:05:59,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955591781] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:05:59,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:05:59,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-09 15:05:59,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914484370] [2023-12-09 15:05:59,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:05:59,953 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-09 15:05:59,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:05:59,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-09 15:05:59,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-12-09 15:05:59,957 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:05:59,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 935 places, 1690 transitions, 79480 flow. Second operand has 20 states, 20 states have (on average 107.65) internal successors, (2153), 20 states have internal predecessors, (2153), 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) [2023-12-09 15:05:59,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:05:59,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:05:59,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:06:03,737 INFO L124 PetriNetUnfolderBase]: 4396/8809 cut-off events. [2023-12-09 15:06:03,737 INFO L125 PetriNetUnfolderBase]: For 188287/191417 co-relation queries the response was YES. [2023-12-09 15:06:03,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196702 conditions, 8809 events. 4396/8809 cut-off events. For 188287/191417 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 71879 event pairs, 141 based on Foata normal form. 9/8206 useless extension candidates. Maximal degree in co-relation 174507. Up to 4202 conditions per place. [2023-12-09 15:06:03,894 INFO L140 encePairwiseOnDemand]: 145/178 looper letters, 1173 selfloop transitions, 194 changer transitions 266/1735 dead transitions. [2023-12-09 15:06:03,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 967 places, 1735 transitions, 84900 flow [2023-12-09 15:06:03,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-09 15:06:03,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-12-09 15:06:03,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3690 transitions. [2023-12-09 15:06:03,896 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6281920326864147 [2023-12-09 15:06:03,896 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3690 transitions. [2023-12-09 15:06:03,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3690 transitions. [2023-12-09 15:06:03,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:06:03,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3690 transitions. [2023-12-09 15:06:03,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 111.81818181818181) internal successors, (3690), 33 states have internal predecessors, (3690), 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) [2023-12-09 15:06:03,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 178.0) internal successors, (6052), 34 states have internal predecessors, (6052), 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) [2023-12-09 15:06:03,902 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 178.0) internal successors, (6052), 34 states have internal predecessors, (6052), 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) [2023-12-09 15:06:03,902 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 808 predicate places. [2023-12-09 15:06:03,902 INFO L500 AbstractCegarLoop]: Abstraction has has 967 places, 1735 transitions, 84900 flow [2023-12-09 15:06:03,903 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 107.65) internal successors, (2153), 20 states have internal predecessors, (2153), 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) [2023-12-09 15:06:03,903 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:06:03,903 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:06:03,903 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-09 15:06:03,903 INFO L425 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:06:03,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:06:03,903 INFO L85 PathProgramCache]: Analyzing trace with hash -144740140, now seen corresponding path program 9 times [2023-12-09 15:06:03,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:06:03,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088499823] [2023-12-09 15:06:03,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:06:03,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:06:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:06:04,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:06:04,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:06:04,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088499823] [2023-12-09 15:06:04,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088499823] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:06:04,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:06:04,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-09 15:06:04,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804164010] [2023-12-09 15:06:04,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:06:04,546 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-09 15:06:04,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:06:04,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-09 15:06:04,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-12-09 15:06:04,547 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:06:04,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 967 places, 1735 transitions, 84900 flow. Second operand has 20 states, 20 states have (on average 107.65) internal successors, (2153), 20 states have internal predecessors, (2153), 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) [2023-12-09 15:06:04,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:06:04,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:06:04,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:06:08,717 INFO L124 PetriNetUnfolderBase]: 4417/8886 cut-off events. [2023-12-09 15:06:08,718 INFO L125 PetriNetUnfolderBase]: For 201729/205093 co-relation queries the response was YES. [2023-12-09 15:06:08,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205346 conditions, 8886 events. 4417/8886 cut-off events. For 201729/205093 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 72926 event pairs, 212 based on Foata normal form. 7/8281 useless extension candidates. Maximal degree in co-relation 182372. Up to 4202 conditions per place. [2023-12-09 15:06:08,880 INFO L140 encePairwiseOnDemand]: 145/178 looper letters, 1187 selfloop transitions, 190 changer transitions 266/1745 dead transitions. [2023-12-09 15:06:08,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 997 places, 1745 transitions, 88646 flow [2023-12-09 15:06:08,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-09 15:06:08,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-12-09 15:06:08,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3474 transitions. [2023-12-09 15:06:08,882 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6295759333091699 [2023-12-09 15:06:08,882 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3474 transitions. [2023-12-09 15:06:08,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3474 transitions. [2023-12-09 15:06:08,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:06:08,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3474 transitions. [2023-12-09 15:06:08,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 112.06451612903226) internal successors, (3474), 31 states have internal predecessors, (3474), 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) [2023-12-09 15:06:08,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 178.0) internal successors, (5696), 32 states have internal predecessors, (5696), 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) [2023-12-09 15:06:08,887 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 178.0) internal successors, (5696), 32 states have internal predecessors, (5696), 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) [2023-12-09 15:06:08,888 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 838 predicate places. [2023-12-09 15:06:08,888 INFO L500 AbstractCegarLoop]: Abstraction has has 997 places, 1745 transitions, 88646 flow [2023-12-09 15:06:08,888 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 107.65) internal successors, (2153), 20 states have internal predecessors, (2153), 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) [2023-12-09 15:06:08,888 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:06:08,888 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:06:08,888 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-09 15:06:08,888 INFO L425 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:06:08,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:06:08,889 INFO L85 PathProgramCache]: Analyzing trace with hash -2017276748, now seen corresponding path program 10 times [2023-12-09 15:06:08,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:06:08,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94564208] [2023-12-09 15:06:08,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:06:08,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:06:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:06:09,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:06:09,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:06:09,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94564208] [2023-12-09 15:06:09,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94564208] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:06:09,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844861575] [2023-12-09 15:06:09,475 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:06:09,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:06:09,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:06:09,486 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:06:09,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-09 15:06:09,592 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:06:09,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:06:09,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-09 15:06:09,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:06:09,898 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-12-09 15:06:09,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2023-12-09 15:06:09,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:06:09,908 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:06:10,024 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-12-09 15:06:10,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2023-12-09 15:06:10,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:06:10,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844861575] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:06:10,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:06:10,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 9, 9] total 30 [2023-12-09 15:06:10,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965955825] [2023-12-09 15:06:10,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:06:10,142 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-09 15:06:10,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:06:10,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-09 15:06:10,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=719, Unknown=0, NotChecked=0, Total=870 [2023-12-09 15:06:10,143 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:06:10,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 997 places, 1745 transitions, 88646 flow. Second operand has 30 states, 30 states have (on average 109.4) internal successors, (3282), 30 states have internal predecessors, (3282), 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) [2023-12-09 15:06:10,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:06:10,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:06:10,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:06:15,077 INFO L124 PetriNetUnfolderBase]: 4711/9400 cut-off events. [2023-12-09 15:06:15,077 INFO L125 PetriNetUnfolderBase]: For 223090/227062 co-relation queries the response was YES. [2023-12-09 15:06:15,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226686 conditions, 9400 events. 4711/9400 cut-off events. For 223090/227062 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 77675 event pairs, 130 based on Foata normal form. 15/8781 useless extension candidates. Maximal degree in co-relation 201686. Up to 4412 conditions per place. [2023-12-09 15:06:15,248 INFO L140 encePairwiseOnDemand]: 144/178 looper letters, 1281 selfloop transitions, 307 changer transitions 284/1974 dead transitions. [2023-12-09 15:06:15,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1040 places, 1974 transitions, 104603 flow [2023-12-09 15:06:15,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-09 15:06:15,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-12-09 15:06:15,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 4945 transitions. [2023-12-09 15:06:15,250 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6313840653728294 [2023-12-09 15:06:15,250 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 4945 transitions. [2023-12-09 15:06:15,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 4945 transitions. [2023-12-09 15:06:15,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:06:15,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 4945 transitions. [2023-12-09 15:06:15,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 112.38636363636364) internal successors, (4945), 44 states have internal predecessors, (4945), 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) [2023-12-09 15:06:15,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 178.0) internal successors, (8010), 45 states have internal predecessors, (8010), 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) [2023-12-09 15:06:15,258 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 178.0) internal successors, (8010), 45 states have internal predecessors, (8010), 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) [2023-12-09 15:06:15,258 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 881 predicate places. [2023-12-09 15:06:15,258 INFO L500 AbstractCegarLoop]: Abstraction has has 1040 places, 1974 transitions, 104603 flow [2023-12-09 15:06:15,259 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 109.4) internal successors, (3282), 30 states have internal predecessors, (3282), 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) [2023-12-09 15:06:15,259 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:06:15,259 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:06:15,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-09 15:06:15,464 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:06:15,464 INFO L425 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:06:15,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:06:15,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1678361370, now seen corresponding path program 11 times [2023-12-09 15:06:15,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:06:15,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260367620] [2023-12-09 15:06:15,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:06:15,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:06:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:06:16,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:06:16,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:06:16,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260367620] [2023-12-09 15:06:16,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260367620] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:06:16,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:06:16,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-09 15:06:16,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579868975] [2023-12-09 15:06:16,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:06:16,020 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:06:16,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:06:16,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:06:16,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:06:16,022 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:06:16,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1040 places, 1974 transitions, 104603 flow. Second operand has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:06:16,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:06:16,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:06:16,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:06:20,452 INFO L124 PetriNetUnfolderBase]: 4756/9516 cut-off events. [2023-12-09 15:06:20,453 INFO L125 PetriNetUnfolderBase]: For 243309/247467 co-relation queries the response was YES. [2023-12-09 15:06:20,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237162 conditions, 9516 events. 4756/9516 cut-off events. For 243309/247467 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 78907 event pairs, 134 based on Foata normal form. 15/8891 useless extension candidates. Maximal degree in co-relation 210569. Up to 4412 conditions per place. [2023-12-09 15:06:20,630 INFO L140 encePairwiseOnDemand]: 145/178 looper letters, 1446 selfloop transitions, 148 changer transitions 312/2008 dead transitions. [2023-12-09 15:06:20,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1071 places, 2008 transitions, 110229 flow [2023-12-09 15:06:20,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-09 15:06:20,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-12-09 15:06:20,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3569 transitions. [2023-12-09 15:06:20,633 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6265800561797753 [2023-12-09 15:06:20,633 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3569 transitions. [2023-12-09 15:06:20,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3569 transitions. [2023-12-09 15:06:20,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:06:20,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3569 transitions. [2023-12-09 15:06:20,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 111.53125) internal successors, (3569), 32 states have internal predecessors, (3569), 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) [2023-12-09 15:06:20,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 178.0) internal successors, (5874), 33 states have internal predecessors, (5874), 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) [2023-12-09 15:06:20,638 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 178.0) internal successors, (5874), 33 states have internal predecessors, (5874), 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) [2023-12-09 15:06:20,638 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 912 predicate places. [2023-12-09 15:06:20,639 INFO L500 AbstractCegarLoop]: Abstraction has has 1071 places, 2008 transitions, 110229 flow [2023-12-09 15:06:20,639 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:06:20,639 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:06:20,639 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:06:20,639 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-09 15:06:20,639 INFO L425 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:06:20,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:06:20,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1593419202, now seen corresponding path program 12 times [2023-12-09 15:06:20,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:06:20,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011483501] [2023-12-09 15:06:20,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:06:20,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:06:20,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:06:21,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:06:21,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:06:21,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011483501] [2023-12-09 15:06:21,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011483501] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:06:21,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:06:21,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-09 15:06:21,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457610145] [2023-12-09 15:06:21,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:06:21,175 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:06:21,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:06:21,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:06:21,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:06:21,176 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:06:21,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1071 places, 2008 transitions, 110229 flow. Second operand has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:06:21,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:06:21,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:06:21,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:06:25,777 INFO L124 PetriNetUnfolderBase]: 4744/9520 cut-off events. [2023-12-09 15:06:25,777 INFO L125 PetriNetUnfolderBase]: For 264474/268881 co-relation queries the response was YES. [2023-12-09 15:06:25,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244885 conditions, 9520 events. 4744/9520 cut-off events. For 264474/268881 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 79103 event pairs, 126 based on Foata normal form. 20/8905 useless extension candidates. Maximal degree in co-relation 217609. Up to 4412 conditions per place. [2023-12-09 15:06:25,957 INFO L140 encePairwiseOnDemand]: 145/178 looper letters, 1434 selfloop transitions, 147 changer transitions 319/2002 dead transitions. [2023-12-09 15:06:25,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1100 places, 2002 transitions, 113624 flow [2023-12-09 15:06:25,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-09 15:06:25,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-12-09 15:06:25,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3353 transitions. [2023-12-09 15:06:25,960 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6279026217228464 [2023-12-09 15:06:25,960 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3353 transitions. [2023-12-09 15:06:25,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3353 transitions. [2023-12-09 15:06:25,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:06:25,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3353 transitions. [2023-12-09 15:06:25,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 111.76666666666667) internal successors, (3353), 30 states have internal predecessors, (3353), 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) [2023-12-09 15:06:25,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 178.0) internal successors, (5518), 31 states have internal predecessors, (5518), 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) [2023-12-09 15:06:25,965 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 178.0) internal successors, (5518), 31 states have internal predecessors, (5518), 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) [2023-12-09 15:06:25,965 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 941 predicate places. [2023-12-09 15:06:25,965 INFO L500 AbstractCegarLoop]: Abstraction has has 1100 places, 2002 transitions, 113624 flow [2023-12-09 15:06:25,965 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:06:25,965 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:06:25,966 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:06:25,966 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-09 15:06:25,966 INFO L425 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:06:25,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:06:25,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1537026124, now seen corresponding path program 16 times [2023-12-09 15:06:25,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:06:25,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546087621] [2023-12-09 15:06:25,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:06:25,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:06:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:06:26,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:06:26,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:06:26,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546087621] [2023-12-09 15:06:26,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546087621] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:06:26,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:06:26,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-09 15:06:26,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615374380] [2023-12-09 15:06:26,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:06:26,479 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:06:26,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:06:26,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:06:26,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:06:26,481 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:06:26,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1100 places, 2002 transitions, 113624 flow. Second operand has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:06:26,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:06:26,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:06:26,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:06:31,113 INFO L124 PetriNetUnfolderBase]: 4825/9655 cut-off events. [2023-12-09 15:06:31,113 INFO L125 PetriNetUnfolderBase]: For 276607/280991 co-relation queries the response was YES. [2023-12-09 15:06:31,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256923 conditions, 9655 events. 4825/9655 cut-off events. For 276607/280991 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 80401 event pairs, 130 based on Foata normal form. 14/9017 useless extension candidates. Maximal degree in co-relation 228797. Up to 4412 conditions per place. [2023-12-09 15:06:31,296 INFO L140 encePairwiseOnDemand]: 146/178 looper letters, 1436 selfloop transitions, 185 changer transitions 344/2067 dead transitions. [2023-12-09 15:06:31,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1131 places, 2067 transitions, 121162 flow [2023-12-09 15:06:31,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-09 15:06:31,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-12-09 15:06:31,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3562 transitions. [2023-12-09 15:06:31,298 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6253511235955056 [2023-12-09 15:06:31,298 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3562 transitions. [2023-12-09 15:06:31,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3562 transitions. [2023-12-09 15:06:31,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:06:31,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3562 transitions. [2023-12-09 15:06:31,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 111.3125) internal successors, (3562), 32 states have internal predecessors, (3562), 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) [2023-12-09 15:06:31,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 178.0) internal successors, (5874), 33 states have internal predecessors, (5874), 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) [2023-12-09 15:06:31,304 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 178.0) internal successors, (5874), 33 states have internal predecessors, (5874), 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) [2023-12-09 15:06:31,304 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 972 predicate places. [2023-12-09 15:06:31,304 INFO L500 AbstractCegarLoop]: Abstraction has has 1131 places, 2067 transitions, 121162 flow [2023-12-09 15:06:31,304 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:06:31,304 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:06:31,304 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:06:31,305 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-09 15:06:31,305 INFO L425 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:06:31,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:06:31,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1325926156, now seen corresponding path program 17 times [2023-12-09 15:06:31,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:06:31,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276801935] [2023-12-09 15:06:31,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:06:31,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:06:31,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:06:31,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:06:31,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:06:31,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276801935] [2023-12-09 15:06:31,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276801935] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:06:31,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:06:31,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-09 15:06:31,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775873657] [2023-12-09 15:06:31,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:06:31,889 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:06:31,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:06:31,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:06:31,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:06:31,890 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:06:31,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1131 places, 2067 transitions, 121162 flow. Second operand has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:06:31,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:06:31,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:06:31,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:06:37,010 INFO L124 PetriNetUnfolderBase]: 4817/9665 cut-off events. [2023-12-09 15:06:37,010 INFO L125 PetriNetUnfolderBase]: For 295205/299704 co-relation queries the response was YES. [2023-12-09 15:06:37,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265027 conditions, 9665 events. 4817/9665 cut-off events. For 295205/299704 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 80612 event pairs, 122 based on Foata normal form. 17/9037 useless extension candidates. Maximal degree in co-relation 236052. Up to 4412 conditions per place. [2023-12-09 15:06:37,207 INFO L140 encePairwiseOnDemand]: 145/178 looper letters, 1427 selfloop transitions, 186 changer transitions 349/2064 dead transitions. [2023-12-09 15:06:37,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1159 places, 2064 transitions, 124848 flow [2023-12-09 15:06:37,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-09 15:06:37,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-12-09 15:06:37,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3236 transitions. [2023-12-09 15:06:37,209 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6268888027896165 [2023-12-09 15:06:37,209 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3236 transitions. [2023-12-09 15:06:37,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3236 transitions. [2023-12-09 15:06:37,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:06:37,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3236 transitions. [2023-12-09 15:06:37,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 111.58620689655173) internal successors, (3236), 29 states have internal predecessors, (3236), 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) [2023-12-09 15:06:37,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 178.0) internal successors, (5340), 30 states have internal predecessors, (5340), 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) [2023-12-09 15:06:37,214 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 178.0) internal successors, (5340), 30 states have internal predecessors, (5340), 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) [2023-12-09 15:06:37,214 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 1000 predicate places. [2023-12-09 15:06:37,214 INFO L500 AbstractCegarLoop]: Abstraction has has 1159 places, 2064 transitions, 124848 flow [2023-12-09 15:06:37,214 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:06:37,214 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:06:37,215 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:06:37,215 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-09 15:06:37,215 INFO L425 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:06:37,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:06:37,215 INFO L85 PathProgramCache]: Analyzing trace with hash -70616848, now seen corresponding path program 18 times [2023-12-09 15:06:37,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:06:37,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991523578] [2023-12-09 15:06:37,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:06:37,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:06:37,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:06:37,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:06:37,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:06:37,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991523578] [2023-12-09 15:06:37,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991523578] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:06:37,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:06:37,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-09 15:06:37,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223635949] [2023-12-09 15:06:37,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:06:37,793 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:06:37,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:06:37,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:06:37,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:06:37,795 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:06:37,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1159 places, 2064 transitions, 124848 flow. Second operand has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:06:37,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:06:37,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:06:37,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:06:42,653 INFO L124 PetriNetUnfolderBase]: 4812/9678 cut-off events. [2023-12-09 15:06:42,653 INFO L125 PetriNetUnfolderBase]: For 304054/308856 co-relation queries the response was YES. [2023-12-09 15:06:42,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273164 conditions, 9678 events. 4812/9678 cut-off events. For 304054/308856 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 80700 event pairs, 174 based on Foata normal form. 15/9053 useless extension candidates. Maximal degree in co-relation 243334. Up to 4414 conditions per place. [2023-12-09 15:06:42,844 INFO L140 encePairwiseOnDemand]: 145/178 looper letters, 1425 selfloop transitions, 182 changer transitions 349/2058 dead transitions. [2023-12-09 15:06:42,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1186 places, 2058 transitions, 128352 flow [2023-12-09 15:06:42,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-09 15:06:42,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-12-09 15:06:42,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3127 transitions. [2023-12-09 15:06:42,846 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6274077046548957 [2023-12-09 15:06:42,846 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3127 transitions. [2023-12-09 15:06:42,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3127 transitions. [2023-12-09 15:06:42,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:06:42,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3127 transitions. [2023-12-09 15:06:42,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 111.67857142857143) internal successors, (3127), 28 states have internal predecessors, (3127), 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) [2023-12-09 15:06:42,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 178.0) internal successors, (5162), 29 states have internal predecessors, (5162), 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) [2023-12-09 15:06:42,851 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 178.0) internal successors, (5162), 29 states have internal predecessors, (5162), 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) [2023-12-09 15:06:42,851 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 1027 predicate places. [2023-12-09 15:06:42,852 INFO L500 AbstractCegarLoop]: Abstraction has has 1186 places, 2058 transitions, 128352 flow [2023-12-09 15:06:42,852 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:06:42,852 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:06:42,852 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:06:42,852 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-09 15:06:42,852 INFO L425 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:06:42,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:06:42,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1191903976, now seen corresponding path program 19 times [2023-12-09 15:06:42,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:06:42,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859545465] [2023-12-09 15:06:42,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:06:42,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:06:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:06:43,443 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:06:43,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:06:43,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859545465] [2023-12-09 15:06:43,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859545465] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:06:43,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082087198] [2023-12-09 15:06:43,444 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-09 15:06:43,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:06:43,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:06:43,445 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:06:43,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-09 15:06:43,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:06:43,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-09 15:06:43,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:06:43,945 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:06:43,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2023-12-09 15:06:43,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:06:43,978 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:06:44,095 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-12-09 15:06:44,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2023-12-09 15:06:44,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:06:44,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082087198] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:06:44,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:06:44,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 9] total 29 [2023-12-09 15:06:44,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618832264] [2023-12-09 15:06:44,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:06:44,179 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-09 15:06:44,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:06:44,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-09 15:06:44,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2023-12-09 15:06:44,181 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:06:44,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1186 places, 2058 transitions, 128352 flow. Second operand has 29 states, 29 states have (on average 108.48275862068965) internal successors, (3146), 29 states have internal predecessors, (3146), 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) [2023-12-09 15:06:44,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:06:44,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:06:44,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:06:49,450 INFO L124 PetriNetUnfolderBase]: 5033/10092 cut-off events. [2023-12-09 15:06:49,450 INFO L125 PetriNetUnfolderBase]: For 336685/342086 co-relation queries the response was YES. [2023-12-09 15:06:49,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293874 conditions, 10092 events. 5033/10092 cut-off events. For 336685/342086 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 84974 event pairs, 134 based on Foata normal form. 53/9481 useless extension candidates. Maximal degree in co-relation 262657. Up to 4670 conditions per place. [2023-12-09 15:06:49,741 INFO L140 encePairwiseOnDemand]: 142/178 looper letters, 1349 selfloop transitions, 373 changer transitions 373/2197 dead transitions. [2023-12-09 15:06:49,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1221 places, 2197 transitions, 141509 flow [2023-12-09 15:06:49,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-09 15:06:49,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-12-09 15:06:49,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 4057 transitions. [2023-12-09 15:06:49,746 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6331148564294632 [2023-12-09 15:06:49,746 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 4057 transitions. [2023-12-09 15:06:49,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 4057 transitions. [2023-12-09 15:06:49,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:06:49,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 4057 transitions. [2023-12-09 15:06:49,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 112.69444444444444) internal successors, (4057), 36 states have internal predecessors, (4057), 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) [2023-12-09 15:06:49,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 178.0) internal successors, (6586), 37 states have internal predecessors, (6586), 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) [2023-12-09 15:06:49,752 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 178.0) internal successors, (6586), 37 states have internal predecessors, (6586), 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) [2023-12-09 15:06:49,753 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 1062 predicate places. [2023-12-09 15:06:49,753 INFO L500 AbstractCegarLoop]: Abstraction has has 1221 places, 2197 transitions, 141509 flow [2023-12-09 15:06:49,753 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 108.48275862068965) internal successors, (3146), 29 states have internal predecessors, (3146), 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) [2023-12-09 15:06:49,753 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:06:49,754 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:06:49,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-09 15:06:49,958 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-09 15:06:49,959 INFO L425 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:06:49,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:06:49,959 INFO L85 PathProgramCache]: Analyzing trace with hash -226307566, now seen corresponding path program 20 times [2023-12-09 15:06:49,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:06:49,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724505683] [2023-12-09 15:06:49,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:06:49,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:06:49,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:06:50,391 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:06:50,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:06:50,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724505683] [2023-12-09 15:06:50,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724505683] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:06:50,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:06:50,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-09 15:06:50,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711801132] [2023-12-09 15:06:50,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:06:50,392 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-09 15:06:50,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:06:50,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-09 15:06:50,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2023-12-09 15:06:50,394 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:06:50,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1221 places, 2197 transitions, 141509 flow. Second operand has 20 states, 20 states have (on average 107.65) internal successors, (2153), 20 states have internal predecessors, (2153), 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) [2023-12-09 15:06:50,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:06:50,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:06:50,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:06:55,858 INFO L124 PetriNetUnfolderBase]: 5125/10232 cut-off events. [2023-12-09 15:06:55,858 INFO L125 PetriNetUnfolderBase]: For 351702/356453 co-relation queries the response was YES. [2023-12-09 15:06:55,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307860 conditions, 10232 events. 5125/10232 cut-off events. For 351702/356453 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 86101 event pairs, 126 based on Foata normal form. 16/9575 useless extension candidates. Maximal degree in co-relation 275218. Up to 4808 conditions per place. [2023-12-09 15:06:56,068 INFO L140 encePairwiseOnDemand]: 146/178 looper letters, 1563 selfloop transitions, 209 changer transitions 373/2247 dead transitions. [2023-12-09 15:06:56,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1252 places, 2247 transitions, 149139 flow [2023-12-09 15:06:56,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-09 15:06:56,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-12-09 15:06:56,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3575 transitions. [2023-12-09 15:06:56,070 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6276334269662921 [2023-12-09 15:06:56,070 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3575 transitions. [2023-12-09 15:06:56,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3575 transitions. [2023-12-09 15:06:56,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:06:56,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3575 transitions. [2023-12-09 15:06:56,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 111.71875) internal successors, (3575), 32 states have internal predecessors, (3575), 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) [2023-12-09 15:06:56,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 178.0) internal successors, (5874), 33 states have internal predecessors, (5874), 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) [2023-12-09 15:06:56,076 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 178.0) internal successors, (5874), 33 states have internal predecessors, (5874), 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) [2023-12-09 15:06:56,076 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 1093 predicate places. [2023-12-09 15:06:56,077 INFO L500 AbstractCegarLoop]: Abstraction has has 1252 places, 2247 transitions, 149139 flow [2023-12-09 15:06:56,077 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 107.65) internal successors, (2153), 20 states have internal predecessors, (2153), 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) [2023-12-09 15:06:56,077 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:06:56,077 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:06:56,077 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-09 15:06:56,077 INFO L425 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:06:56,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:06:56,077 INFO L85 PathProgramCache]: Analyzing trace with hash 65062898, now seen corresponding path program 21 times [2023-12-09 15:06:56,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:06:56,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014414469] [2023-12-09 15:06:56,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:06:56,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:06:56,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:06:56,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:06:56,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:06:56,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014414469] [2023-12-09 15:06:56,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014414469] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:06:56,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:06:56,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-09 15:06:56,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404561517] [2023-12-09 15:06:56,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:06:56,631 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:06:56,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:06:56,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:06:56,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:06:56,632 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:06:56,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1252 places, 2247 transitions, 149139 flow. Second operand has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:06:56,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:06:56,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:06:56,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:07:02,587 INFO L124 PetriNetUnfolderBase]: 5132/10252 cut-off events. [2023-12-09 15:07:02,588 INFO L125 PetriNetUnfolderBase]: For 369903/375000 co-relation queries the response was YES. [2023-12-09 15:07:02,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317151 conditions, 10252 events. 5132/10252 cut-off events. For 369903/375000 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 86501 event pairs, 126 based on Foata normal form. 15/9594 useless extension candidates. Maximal degree in co-relation 283629. Up to 4808 conditions per place. [2023-12-09 15:07:02,810 INFO L140 encePairwiseOnDemand]: 146/178 looper letters, 1587 selfloop transitions, 178 changer transitions 386/2253 dead transitions. [2023-12-09 15:07:02,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1283 places, 2253 transitions, 153773 flow [2023-12-09 15:07:02,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-09 15:07:02,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-12-09 15:07:02,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3560 transitions. [2023-12-09 15:07:02,812 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.625 [2023-12-09 15:07:02,812 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3560 transitions. [2023-12-09 15:07:02,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3560 transitions. [2023-12-09 15:07:02,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:07:02,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3560 transitions. [2023-12-09 15:07:02,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 111.25) internal successors, (3560), 32 states have internal predecessors, (3560), 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) [2023-12-09 15:07:02,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 178.0) internal successors, (5874), 33 states have internal predecessors, (5874), 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) [2023-12-09 15:07:02,817 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 178.0) internal successors, (5874), 33 states have internal predecessors, (5874), 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) [2023-12-09 15:07:02,817 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 1124 predicate places. [2023-12-09 15:07:02,817 INFO L500 AbstractCegarLoop]: Abstraction has has 1283 places, 2253 transitions, 153773 flow [2023-12-09 15:07:02,818 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:07:02,818 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:07:02,818 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:07:02,818 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-09 15:07:02,818 INFO L425 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:07:02,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:07:02,818 INFO L85 PathProgramCache]: Analyzing trace with hash 840410954, now seen corresponding path program 22 times [2023-12-09 15:07:02,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:07:02,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770795389] [2023-12-09 15:07:02,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:07:02,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:07:02,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:07:03,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:07:03,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:07:03,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770795389] [2023-12-09 15:07:03,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770795389] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:07:03,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:07:03,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-09 15:07:03,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241795010] [2023-12-09 15:07:03,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:07:03,320 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:07:03,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:07:03,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:07:03,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:07:03,322 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:07:03,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1283 places, 2253 transitions, 153773 flow. Second operand has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:07:03,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:07:03,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:07:03,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:07:09,439 INFO L124 PetriNetUnfolderBase]: 5175/10341 cut-off events. [2023-12-09 15:07:09,440 INFO L125 PetriNetUnfolderBase]: For 395271/400378 co-relation queries the response was YES. [2023-12-09 15:07:09,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328441 conditions, 10341 events. 5175/10341 cut-off events. For 395271/400378 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 87190 event pairs, 122 based on Foata normal form. 15/9675 useless extension candidates. Maximal degree in co-relation 294031. Up to 4808 conditions per place. [2023-12-09 15:07:09,658 INFO L140 encePairwiseOnDemand]: 145/178 looper letters, 1601 selfloop transitions, 190 changer transitions 397/2290 dead transitions. [2023-12-09 15:07:09,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1312 places, 2290 transitions, 160601 flow [2023-12-09 15:07:09,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-09 15:07:09,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-12-09 15:07:09,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3350 transitions. [2023-12-09 15:07:09,660 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6273408239700374 [2023-12-09 15:07:09,660 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3350 transitions. [2023-12-09 15:07:09,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3350 transitions. [2023-12-09 15:07:09,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:07:09,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3350 transitions. [2023-12-09 15:07:09,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 111.66666666666667) internal successors, (3350), 30 states have internal predecessors, (3350), 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) [2023-12-09 15:07:09,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 178.0) internal successors, (5518), 31 states have internal predecessors, (5518), 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) [2023-12-09 15:07:09,664 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 178.0) internal successors, (5518), 31 states have internal predecessors, (5518), 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) [2023-12-09 15:07:09,665 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 1153 predicate places. [2023-12-09 15:07:09,665 INFO L500 AbstractCegarLoop]: Abstraction has has 1312 places, 2290 transitions, 160601 flow [2023-12-09 15:07:09,665 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:07:09,665 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:07:09,665 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:07:09,665 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-12-09 15:07:09,665 INFO L425 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:07:09,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:07:09,666 INFO L85 PathProgramCache]: Analyzing trace with hash 43534028, now seen corresponding path program 23 times [2023-12-09 15:07:09,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:07:09,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813045546] [2023-12-09 15:07:09,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:07:09,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:07:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:07:10,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:07:10,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:07:10,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813045546] [2023-12-09 15:07:10,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813045546] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:07:10,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:07:10,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-09 15:07:10,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726644972] [2023-12-09 15:07:10,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:07:10,082 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:07:10,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:07:10,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:07:10,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:07:10,084 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:07:10,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1312 places, 2290 transitions, 160601 flow. Second operand has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:07:10,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:07:10,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:07:10,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:07:15,950 INFO L124 PetriNetUnfolderBase]: 5165/10331 cut-off events. [2023-12-09 15:07:15,950 INFO L125 PetriNetUnfolderBase]: For 394307/399388 co-relation queries the response was YES. [2023-12-09 15:07:15,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337005 conditions, 10331 events. 5165/10331 cut-off events. For 394307/399388 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 87247 event pairs, 188 based on Foata normal form. 12/9670 useless extension candidates. Maximal degree in co-relation 301716. Up to 4808 conditions per place. [2023-12-09 15:07:16,179 INFO L140 encePairwiseOnDemand]: 145/178 looper letters, 1590 selfloop transitions, 192 changer transitions 402/2286 dead transitions. [2023-12-09 15:07:16,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1340 places, 2286 transitions, 164625 flow [2023-12-09 15:07:16,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-09 15:07:16,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-12-09 15:07:16,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3236 transitions. [2023-12-09 15:07:16,181 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6268888027896165 [2023-12-09 15:07:16,181 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3236 transitions. [2023-12-09 15:07:16,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3236 transitions. [2023-12-09 15:07:16,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:07:16,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3236 transitions. [2023-12-09 15:07:16,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 111.58620689655173) internal successors, (3236), 29 states have internal predecessors, (3236), 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) [2023-12-09 15:07:16,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 178.0) internal successors, (5340), 30 states have internal predecessors, (5340), 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) [2023-12-09 15:07:16,186 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 178.0) internal successors, (5340), 30 states have internal predecessors, (5340), 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) [2023-12-09 15:07:16,186 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 1181 predicate places. [2023-12-09 15:07:16,186 INFO L500 AbstractCegarLoop]: Abstraction has has 1340 places, 2286 transitions, 164625 flow [2023-12-09 15:07:16,186 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:07:16,186 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:07:16,186 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:07:16,186 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-12-09 15:07:16,187 INFO L425 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:07:16,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:07:16,187 INFO L85 PathProgramCache]: Analyzing trace with hash 208224392, now seen corresponding path program 24 times [2023-12-09 15:07:16,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:07:16,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054431432] [2023-12-09 15:07:16,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:07:16,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:07:16,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:07:16,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:07:16,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:07:16,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054431432] [2023-12-09 15:07:16,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054431432] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:07:16,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046601432] [2023-12-09 15:07:16,694 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-09 15:07:16,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:07:16,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:07:16,703 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:07:16,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-09 15:07:16,880 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-12-09 15:07:16,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:07:16,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-09 15:07:16,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:07:17,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-09 15:07:17,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-09 15:07:17,519 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-09 15:07:17,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-09 15:07:17,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-09 15:07:17,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-09 15:07:17,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-09 15:07:18,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2023-12-09 15:07:18,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:07:18,233 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:07:19,479 INFO L349 Elim1Store]: treesize reduction 23, result has 60.3 percent of original size [2023-12-09 15:07:19,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 192 treesize of output 98 [2023-12-09 15:07:19,564 INFO L349 Elim1Store]: treesize reduction 28, result has 78.6 percent of original size [2023-12-09 15:07:19,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 854 treesize of output 820 [2023-12-09 15:07:19,588 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-09 15:07:19,589 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-09 15:07:19,610 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:07:19,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 700 treesize of output 652 [2023-12-09 15:07:19,635 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-09 15:07:19,637 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-09 15:07:19,659 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:07:19,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 604 treesize of output 460 [2023-12-09 15:07:20,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-12-09 15:07:20,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:07:20,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046601432] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:07:20,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:07:20,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 23] total 60 [2023-12-09 15:07:20,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442508272] [2023-12-09 15:07:20,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:07:20,949 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-09 15:07:20,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:07:20,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-09 15:07:20,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=756, Invalid=2662, Unknown=122, NotChecked=0, Total=3540 [2023-12-09 15:07:20,952 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 178 [2023-12-09 15:07:20,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1340 places, 2286 transitions, 164625 flow. Second operand has 60 states, 60 states have (on average 86.06666666666666) internal successors, (5164), 60 states have internal predecessors, (5164), 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) [2023-12-09 15:07:20,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:07:20,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 178 [2023-12-09 15:07:20,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:07:32,702 INFO L124 PetriNetUnfolderBase]: 5913/11797 cut-off events. [2023-12-09 15:07:32,703 INFO L125 PetriNetUnfolderBase]: For 496114/502495 co-relation queries the response was YES. [2023-12-09 15:07:32,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394918 conditions, 11797 events. 5913/11797 cut-off events. For 496114/502495 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 101410 event pairs, 130 based on Foata normal form. 67/11089 useless extension candidates. Maximal degree in co-relation 353126. Up to 6046 conditions per place. [2023-12-09 15:07:32,977 INFO L140 encePairwiseOnDemand]: 135/178 looper letters, 1641 selfloop transitions, 479 changer transitions 406/2604 dead transitions. [2023-12-09 15:07:32,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1391 places, 2604 transitions, 193833 flow [2023-12-09 15:07:32,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-09 15:07:32,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-12-09 15:07:32,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 4742 transitions. [2023-12-09 15:07:32,981 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5123163353500432 [2023-12-09 15:07:32,981 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 4742 transitions. [2023-12-09 15:07:32,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 4742 transitions. [2023-12-09 15:07:32,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:07:32,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 4742 transitions. [2023-12-09 15:07:32,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 91.1923076923077) internal successors, (4742), 52 states have internal predecessors, (4742), 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) [2023-12-09 15:07:32,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 178.0) internal successors, (9434), 53 states have internal predecessors, (9434), 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) [2023-12-09 15:07:32,988 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 178.0) internal successors, (9434), 53 states have internal predecessors, (9434), 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) [2023-12-09 15:07:32,989 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 1232 predicate places. [2023-12-09 15:07:32,989 INFO L500 AbstractCegarLoop]: Abstraction has has 1391 places, 2604 transitions, 193833 flow [2023-12-09 15:07:32,989 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 86.06666666666666) internal successors, (5164), 60 states have internal predecessors, (5164), 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) [2023-12-09 15:07:32,989 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:07:32,989 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:07:32,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-09 15:07:33,194 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:07:33,194 INFO L425 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:07:33,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:07:33,195 INFO L85 PathProgramCache]: Analyzing trace with hash 750114992, now seen corresponding path program 25 times [2023-12-09 15:07:33,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:07:33,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328173826] [2023-12-09 15:07:33,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:07:33,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:07:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:07:33,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:07:33,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:07:33,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328173826] [2023-12-09 15:07:33,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328173826] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:07:33,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:07:33,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-09 15:07:33,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733956608] [2023-12-09 15:07:33,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:07:33,684 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:07:33,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:07:33,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:07:33,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:07:33,685 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:07:33,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1391 places, 2604 transitions, 193833 flow. Second operand has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:07:33,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:07:33,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:07:33,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:07:42,519 INFO L124 PetriNetUnfolderBase]: 5914/11777 cut-off events. [2023-12-09 15:07:42,519 INFO L125 PetriNetUnfolderBase]: For 509614/515823 co-relation queries the response was YES. [2023-12-09 15:07:42,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405211 conditions, 11777 events. 5914/11777 cut-off events. For 509614/515823 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 101157 event pairs, 134 based on Foata normal form. 19/11026 useless extension candidates. Maximal degree in co-relation 362399. Up to 6048 conditions per place. [2023-12-09 15:07:42,925 INFO L140 encePairwiseOnDemand]: 145/178 looper letters, 1897 selfloop transitions, 199 changer transitions 406/2604 dead transitions. [2023-12-09 15:07:42,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1419 places, 2604 transitions, 198789 flow [2023-12-09 15:07:42,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-09 15:07:42,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-12-09 15:07:42,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3235 transitions. [2023-12-09 15:07:42,927 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6266950794265789 [2023-12-09 15:07:42,927 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3235 transitions. [2023-12-09 15:07:42,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3235 transitions. [2023-12-09 15:07:42,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:07:42,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3235 transitions. [2023-12-09 15:07:42,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 111.55172413793103) internal successors, (3235), 29 states have internal predecessors, (3235), 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) [2023-12-09 15:07:42,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 178.0) internal successors, (5340), 30 states have internal predecessors, (5340), 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) [2023-12-09 15:07:42,932 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 178.0) internal successors, (5340), 30 states have internal predecessors, (5340), 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) [2023-12-09 15:07:42,932 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 1260 predicate places. [2023-12-09 15:07:42,932 INFO L500 AbstractCegarLoop]: Abstraction has has 1419 places, 2604 transitions, 198789 flow [2023-12-09 15:07:42,933 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:07:42,933 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:07:42,933 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:07:42,933 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-12-09 15:07:42,933 INFO L425 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:07:42,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:07:42,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1546991918, now seen corresponding path program 26 times [2023-12-09 15:07:42,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:07:42,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85999228] [2023-12-09 15:07:42,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:07:42,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:07:42,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:07:43,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:07:43,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:07:43,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85999228] [2023-12-09 15:07:43,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85999228] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:07:43,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:07:43,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-09 15:07:43,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185983509] [2023-12-09 15:07:43,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:07:43,415 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:07:43,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:07:43,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:07:43,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:07:43,417 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:07:43,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1419 places, 2604 transitions, 198789 flow. Second operand has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:07:43,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:07:43,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:07:43,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:07:51,270 INFO L124 PetriNetUnfolderBase]: 5847/11671 cut-off events. [2023-12-09 15:07:51,270 INFO L125 PetriNetUnfolderBase]: For 536708/542981 co-relation queries the response was YES. [2023-12-09 15:07:51,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 410952 conditions, 11671 events. 5847/11671 cut-off events. For 536708/542981 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 99893 event pairs, 136 based on Foata normal form. 20/10933 useless extension candidates. Maximal degree in co-relation 367277. Up to 6021 conditions per place. [2023-12-09 15:07:51,543 INFO L140 encePairwiseOnDemand]: 145/178 looper letters, 1881 selfloop transitions, 186 changer transitions 406/2575 dead transitions. [2023-12-09 15:07:51,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1445 places, 2575 transitions, 201403 flow [2023-12-09 15:07:51,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-09 15:07:51,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-12-09 15:07:51,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3239 transitions. [2023-12-09 15:07:51,545 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6274699728787292 [2023-12-09 15:07:51,545 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3239 transitions. [2023-12-09 15:07:51,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3239 transitions. [2023-12-09 15:07:51,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:07:51,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3239 transitions. [2023-12-09 15:07:51,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 111.6896551724138) internal successors, (3239), 29 states have internal predecessors, (3239), 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) [2023-12-09 15:07:51,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 178.0) internal successors, (5340), 30 states have internal predecessors, (5340), 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) [2023-12-09 15:07:51,551 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 178.0) internal successors, (5340), 30 states have internal predecessors, (5340), 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) [2023-12-09 15:07:51,551 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 1286 predicate places. [2023-12-09 15:07:51,551 INFO L500 AbstractCegarLoop]: Abstraction has has 1445 places, 2575 transitions, 201403 flow [2023-12-09 15:07:51,551 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 107.78947368421052) internal successors, (2048), 19 states have internal predecessors, (2048), 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) [2023-12-09 15:07:51,551 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:07:51,551 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:07:51,551 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-12-09 15:07:51,551 INFO L425 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:07:51,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:07:51,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1477128980, now seen corresponding path program 27 times [2023-12-09 15:07:51,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:07:51,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454267177] [2023-12-09 15:07:51,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:07:51,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:07:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:07:52,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:07:52,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:07:52,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454267177] [2023-12-09 15:07:52,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454267177] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:07:52,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655728045] [2023-12-09 15:07:52,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:07:52,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:07:52,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:07:52,385 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:07:52,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-09 15:07:52,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-09 15:07:52,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:07:52,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-09 15:07:52,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:07:52,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-09 15:07:52,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-09 15:07:53,075 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-09 15:07:53,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-09 15:07:53,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-09 15:07:53,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-09 15:07:53,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-09 15:07:53,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-09 15:07:53,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:07:53,952 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:07:55,067 INFO L349 Elim1Store]: treesize reduction 23, result has 60.3 percent of original size [2023-12-09 15:07:55,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 192 treesize of output 98 [2023-12-09 15:07:55,143 INFO L349 Elim1Store]: treesize reduction 28, result has 78.6 percent of original size [2023-12-09 15:07:55,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 3398 treesize of output 2980 [2023-12-09 15:07:55,175 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-09 15:07:55,178 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-09 15:07:55,194 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:07:55,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 700 treesize of output 652 [2023-12-09 15:07:55,209 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-09 15:07:55,212 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-09 15:07:55,228 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:07:55,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 604 treesize of output 460 [2023-12-09 15:07:56,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-12-09 15:07:56,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:07:56,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655728045] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:07:56,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:07:56,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 23] total 60 [2023-12-09 15:07:56,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368096670] [2023-12-09 15:07:56,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:07:56,547 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-09 15:07:56,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:07:56,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-09 15:07:56,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=764, Invalid=2656, Unknown=120, NotChecked=0, Total=3540 [2023-12-09 15:07:56,550 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 178 [2023-12-09 15:07:56,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1445 places, 2575 transitions, 201403 flow. Second operand has 60 states, 60 states have (on average 85.95) internal successors, (5157), 60 states have internal predecessors, (5157), 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) [2023-12-09 15:07:56,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:07:56,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 178 [2023-12-09 15:07:56,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:08:08,073 INFO L124 PetriNetUnfolderBase]: 6016/11991 cut-off events. [2023-12-09 15:08:08,073 INFO L125 PetriNetUnfolderBase]: For 583490/589937 co-relation queries the response was YES. [2023-12-09 15:08:08,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432902 conditions, 11991 events. 6016/11991 cut-off events. For 583490/589937 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 102700 event pairs, 128 based on Foata normal form. 67/11283 useless extension candidates. Maximal degree in co-relation 386822. Up to 6295 conditions per place. [2023-12-09 15:08:08,500 INFO L140 encePairwiseOnDemand]: 132/178 looper letters, 1654 selfloop transitions, 534 changer transitions 406/2672 dead transitions. [2023-12-09 15:08:08,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1496 places, 2672 transitions, 214515 flow [2023-12-09 15:08:08,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-09 15:08:08,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-12-09 15:08:08,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 4670 transitions. [2023-12-09 15:08:08,503 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5045375972342264 [2023-12-09 15:08:08,503 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 4670 transitions. [2023-12-09 15:08:08,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 4670 transitions. [2023-12-09 15:08:08,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:08:08,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 4670 transitions. [2023-12-09 15:08:08,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 89.8076923076923) internal successors, (4670), 52 states have internal predecessors, (4670), 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) [2023-12-09 15:08:08,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 178.0) internal successors, (9434), 53 states have internal predecessors, (9434), 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) [2023-12-09 15:08:08,510 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 178.0) internal successors, (9434), 53 states have internal predecessors, (9434), 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) [2023-12-09 15:08:08,510 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 1337 predicate places. [2023-12-09 15:08:08,510 INFO L500 AbstractCegarLoop]: Abstraction has has 1496 places, 2672 transitions, 214515 flow [2023-12-09 15:08:08,511 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 85.95) internal successors, (5157), 60 states have internal predecessors, (5157), 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) [2023-12-09 15:08:08,511 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:08:08,511 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:08:08,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-09 15:08:08,715 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-12-09 15:08:08,715 INFO L425 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:08:08,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:08:08,716 INFO L85 PathProgramCache]: Analyzing trace with hash -2020961390, now seen corresponding path program 28 times [2023-12-09 15:08:08,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:08:08,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565503344] [2023-12-09 15:08:08,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:08:08,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:08:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:08:09,196 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:08:09,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:08:09,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565503344] [2023-12-09 15:08:09,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565503344] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:08:09,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285137044] [2023-12-09 15:08:09,196 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:08:09,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:08:09,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:08:09,197 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:08:09,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-09 15:08:09,329 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:08:09,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:08:09,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-09 15:08:09,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:08:09,602 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:08:09,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2023-12-09 15:08:09,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:08:09,633 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:08:09,741 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-12-09 15:08:09,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2023-12-09 15:08:09,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:08:09,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285137044] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:08:09,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:08:09,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 9, 9] total 30 [2023-12-09 15:08:09,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027496809] [2023-12-09 15:08:09,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:08:09,833 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-09 15:08:09,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:08:09,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-09 15:08:09,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=720, Unknown=0, NotChecked=0, Total=870 [2023-12-09 15:08:09,836 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:08:09,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1496 places, 2672 transitions, 214515 flow. Second operand has 30 states, 30 states have (on average 109.3) internal successors, (3279), 30 states have internal predecessors, (3279), 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) [2023-12-09 15:08:09,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:08:09,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:08:09,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:08:18,330 INFO L124 PetriNetUnfolderBase]: 5795/11486 cut-off events. [2023-12-09 15:08:18,330 INFO L125 PetriNetUnfolderBase]: For 585632/591714 co-relation queries the response was YES. [2023-12-09 15:08:18,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426738 conditions, 11486 events. 5795/11486 cut-off events. For 585632/591714 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 97572 event pairs, 126 based on Foata normal form. 71/10864 useless extension candidates. Maximal degree in co-relation 381957. Up to 5880 conditions per place. [2023-12-09 15:08:18,803 INFO L140 encePairwiseOnDemand]: 142/178 looper letters, 1729 selfloop transitions, 455 changer transitions 406/2692 dead transitions. [2023-12-09 15:08:18,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1534 places, 2692 transitions, 221327 flow [2023-12-09 15:08:18,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-09 15:08:18,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-12-09 15:08:18,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 4390 transitions. [2023-12-09 15:08:18,806 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6323825986747335 [2023-12-09 15:08:18,806 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 4390 transitions. [2023-12-09 15:08:18,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 4390 transitions. [2023-12-09 15:08:18,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:08:18,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 4390 transitions. [2023-12-09 15:08:18,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 112.56410256410257) internal successors, (4390), 39 states have internal predecessors, (4390), 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) [2023-12-09 15:08:18,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 178.0) internal successors, (7120), 40 states have internal predecessors, (7120), 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) [2023-12-09 15:08:18,812 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 178.0) internal successors, (7120), 40 states have internal predecessors, (7120), 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) [2023-12-09 15:08:18,812 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 1375 predicate places. [2023-12-09 15:08:18,812 INFO L500 AbstractCegarLoop]: Abstraction has has 1534 places, 2692 transitions, 221327 flow [2023-12-09 15:08:18,812 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 109.3) internal successors, (3279), 30 states have internal predecessors, (3279), 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) [2023-12-09 15:08:18,812 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:08:18,813 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:08:18,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-09 15:08:19,021 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-12-09 15:08:19,022 INFO L425 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:08:19,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:08:19,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1978864472, now seen corresponding path program 13 times [2023-12-09 15:08:19,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:08:19,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960710084] [2023-12-09 15:08:19,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:08:19,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:08:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:08:19,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:08:19,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:08:19,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960710084] [2023-12-09 15:08:19,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960710084] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:08:19,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:08:19,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-09 15:08:19,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777094093] [2023-12-09 15:08:19,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:08:19,438 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-09 15:08:19,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:08:19,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-09 15:08:19,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-12-09 15:08:19,439 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:08:19,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1534 places, 2692 transitions, 221327 flow. Second operand has 20 states, 20 states have (on average 107.65) internal successors, (2153), 20 states have internal predecessors, (2153), 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) [2023-12-09 15:08:19,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:08:19,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:08:19,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:08:27,950 INFO L124 PetriNetUnfolderBase]: 5843/11573 cut-off events. [2023-12-09 15:08:27,950 INFO L125 PetriNetUnfolderBase]: For 608673/615002 co-relation queries the response was YES. [2023-12-09 15:08:27,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440157 conditions, 11573 events. 5843/11573 cut-off events. For 608673/615002 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 98478 event pairs, 134 based on Foata normal form. 17/10894 useless extension candidates. Maximal degree in co-relation 394379. Up to 5880 conditions per place. [2023-12-09 15:08:28,243 INFO L140 encePairwiseOnDemand]: 146/178 looper letters, 1956 selfloop transitions, 254 changer transitions 406/2718 dead transitions. [2023-12-09 15:08:28,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1563 places, 2718 transitions, 228703 flow [2023-12-09 15:08:28,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-09 15:08:28,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-12-09 15:08:28,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3351 transitions. [2023-12-09 15:08:28,245 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6275280898876404 [2023-12-09 15:08:28,245 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3351 transitions. [2023-12-09 15:08:28,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3351 transitions. [2023-12-09 15:08:28,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:08:28,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3351 transitions. [2023-12-09 15:08:28,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 111.7) internal successors, (3351), 30 states have internal predecessors, (3351), 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) [2023-12-09 15:08:28,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 178.0) internal successors, (5518), 31 states have internal predecessors, (5518), 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) [2023-12-09 15:08:28,250 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 178.0) internal successors, (5518), 31 states have internal predecessors, (5518), 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) [2023-12-09 15:08:28,250 INFO L308 CegarLoopForPetriNet]: 159 programPoint places, 1404 predicate places. [2023-12-09 15:08:28,250 INFO L500 AbstractCegarLoop]: Abstraction has has 1563 places, 2718 transitions, 228703 flow [2023-12-09 15:08:28,251 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 107.65) internal successors, (2153), 20 states have internal predecessors, (2153), 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) [2023-12-09 15:08:28,251 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:08:28,251 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:08:28,251 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-12-09 15:08:28,251 INFO L425 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:08:28,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:08:28,251 INFO L85 PathProgramCache]: Analyzing trace with hash 2083895376, now seen corresponding path program 14 times [2023-12-09 15:08:28,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:08:28,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365316567] [2023-12-09 15:08:28,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:08:28,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:08:28,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:08:28,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:08:28,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:08:28,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365316567] [2023-12-09 15:08:28,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365316567] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:08:28,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:08:28,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-09 15:08:28,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568948137] [2023-12-09 15:08:28,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:08:28,675 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-09 15:08:28,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:08:28,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-09 15:08:28,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2023-12-09 15:08:28,676 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 178 [2023-12-09 15:08:28,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1563 places, 2718 transitions, 228703 flow. Second operand has 20 states, 20 states have (on average 107.65) internal successors, (2153), 20 states have internal predecessors, (2153), 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) [2023-12-09 15:08:28,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:08:28,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 178 [2023-12-09 15:08:28,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-12-09 15:08:37,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-09 15:08:37,357 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-12-09 15:08:37,357 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-12-09 15:08:37,358 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (20states, 105/178 universal loopers) in iteration 49,while PetriNetUnfolder was constructing finite prefix that currently has 445065 conditions, 11339 events (5790/11338 cut-off events. For 596568/603083 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 97978 event pairs, 122 based on Foata normal form. 14/10758 useless extension candidates. Maximal degree in co-relation 404023. Up to 5548 conditions per place.). [2023-12-09 15:08:37,359 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-12-09 15:08:37,359 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-12-09 15:08:37,360 INFO L457 BasicCegarLoop]: Path program histogram: [28, 14, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:08:37,366 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 15:08:37,366 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 15:08:37,373 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-09 15:08:37,375 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:08:37 BasicIcfg [2023-12-09 15:08:37,375 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 15:08:37,376 INFO L158 Benchmark]: Toolchain (without parser) took 238822.59ms. Allocated memory was 188.7MB in the beginning and 6.3GB in the end (delta: 6.1GB). Free memory was 130.8MB in the beginning and 4.4GB in the end (delta: -4.2GB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. [2023-12-09 15:08:37,376 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory is still 141.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 15:08:37,376 INFO L158 Benchmark]: CACSL2BoogieTranslator took 174.87ms. Allocated memory is still 188.7MB. Free memory was 130.5MB in the beginning and 118.9MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-09 15:08:37,376 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.05ms. Allocated memory is still 188.7MB. Free memory was 118.9MB in the beginning and 117.3MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-09 15:08:37,377 INFO L158 Benchmark]: Boogie Preprocessor took 33.08ms. Allocated memory is still 188.7MB. Free memory was 117.3MB in the beginning and 115.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 15:08:37,377 INFO L158 Benchmark]: RCFGBuilder took 400.25ms. Allocated memory is still 188.7MB. Free memory was 115.5MB in the beginning and 97.9MB in the end (delta: 17.5MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-09 15:08:37,377 INFO L158 Benchmark]: TraceAbstraction took 238183.22ms. Allocated memory was 188.7MB in the beginning and 6.3GB in the end (delta: 6.1GB). Free memory was 97.2MB in the beginning and 4.4GB in the end (delta: -4.3GB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. [2023-12-09 15:08:37,378 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory is still 141.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 174.87ms. Allocated memory is still 188.7MB. Free memory was 130.5MB in the beginning and 118.9MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.05ms. Allocated memory is still 188.7MB. Free memory was 118.9MB in the beginning and 117.3MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.08ms. Allocated memory is still 188.7MB. Free memory was 117.3MB in the beginning and 115.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 400.25ms. Allocated memory is still 188.7MB. Free memory was 115.5MB in the beginning and 97.9MB in the end (delta: 17.5MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 238183.22ms. Allocated memory was 188.7MB in the beginning and 6.3GB in the end (delta: 6.1GB). Free memory was 97.2MB in the beginning and 4.4GB in the end (delta: -4.3GB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (20states, 105/178 universal loopers) in iteration 49,while PetriNetUnfolder was constructing finite prefix that currently has 445065 conditions, 11339 events (5790/11338 cut-off events. For 596568/603083 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 97978 event pairs, 122 based on Foata normal form. 14/10758 useless extension candidates. Maximal degree in co-relation 404023. Up to 5548 conditions per place.). - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (20states, 105/178 universal loopers) in iteration 49,while PetriNetUnfolder was constructing finite prefix that currently has 445065 conditions, 11339 events (5790/11338 cut-off events. For 596568/603083 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 97978 event pairs, 122 based on Foata normal form. 14/10758 useless extension candidates. Maximal degree in co-relation 404023. Up to 5548 conditions per place.). - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (20states, 105/178 universal loopers) in iteration 49,while PetriNetUnfolder was constructing finite prefix that currently has 445065 conditions, 11339 events (5790/11338 cut-off events. For 596568/603083 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 97978 event pairs, 122 based on Foata normal form. 14/10758 useless extension candidates. Maximal degree in co-relation 404023. Up to 5548 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 196 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 238.0s, OverallIterations: 49, TraceHistogramMax: 1, PathProgramHistogramMax: 28, EmptinessCheckTime: 0.0s, AutomataDifference: 196.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 495 mSolverCounterUnknown, 11215 SdHoareTripleChecker+Valid, 19.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11215 mSDsluCounter, 26138 SdHoareTripleChecker+Invalid, 15.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23288 mSDsCounter, 216 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 43488 IncrementalHoareTripleChecker+Invalid, 44199 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 216 mSolverCounterUnsat, 2850 mSDtfsCounter, 43488 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 495 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4487 GetRequests, 2541 SyntacticMatches, 3 SemanticMatches, 1943 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21521 ImplicationChecksByTransitivity, 26.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=228703occurred in iteration=48, InterpolantAutomatonStates: 1454, 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: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 37.1s InterpolantComputationTime, 8176 NumberOfCodeBlocks, 8140 NumberOfCodeBlocksAsserted, 60 NumberOfCheckSat, 9386 ConstructedInterpolants, 170 QuantifiedInterpolants, 84721 SizeOfPredicates, 194 NumberOfNonLiveVariables, 2717 ConjunctsInSsa, 307 ConjunctsInUnsatCore, 67 InterpolantComputations, 42 PerfectInterpolantSequences, 155/192 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown