/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.fix-rcfgbuilder-lbe-0ccecc1-m [2023-11-10 12:09:37,844 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-10 12:09:37,895 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 [2023-11-10 12:09:37,917 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-10 12:09:37,918 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-10 12:09:37,918 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-10 12:09:37,919 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-10 12:09:37,919 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-10 12:09:37,919 INFO L153 SettingsManager]: * Use SBE=true [2023-11-10 12:09:37,922 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-10 12:09:37,922 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-10 12:09:37,923 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-10 12:09:37,923 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-10 12:09:37,924 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-10 12:09:37,924 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-10 12:09:37,924 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-10 12:09:37,925 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-10 12:09:37,925 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-10 12:09:37,925 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-10 12:09:37,925 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-10 12:09:37,925 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-10 12:09:37,926 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-10 12:09:37,926 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-10 12:09:37,926 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-10 12:09:37,927 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-10 12:09:37,927 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 12:09:37,927 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-10 12:09:37,927 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-10 12:09:37,927 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-10 12:09:37,927 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-10 12:09:37,928 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-10 12:09:37,928 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-10 12:09:37,929 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-10 12:09:37,929 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-10 12:09:38,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-10 12:09:38,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-10 12:09:38,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-10 12:09:38,164 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-10 12:09:38,164 INFO L274 PluginConnector]: CDTParser initialized [2023-11-10 12:09:38,165 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c [2023-11-10 12:09:39,238 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-10 12:09:39,374 INFO L384 CDTParser]: Found 1 translation units. [2023-11-10 12:09:39,374 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c [2023-11-10 12:09:39,379 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeeca66ff/7edd5d08c8224ecbacc505edd0f80c8f/FLAG6517655fb [2023-11-10 12:09:39,388 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeeca66ff/7edd5d08c8224ecbacc505edd0f80c8f [2023-11-10 12:09:39,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-10 12:09:39,392 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-10 12:09:39,394 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-10 12:09:39,395 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-10 12:09:39,398 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-10 12:09:39,398 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:09:39" (1/1) ... [2023-11-10 12:09:39,399 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@178f8c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:09:39, skipping insertion in model container [2023-11-10 12:09:39,400 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:09:39" (1/1) ... [2023-11-10 12:09:39,417 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-10 12:09:39,518 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/chl-chromosome-opt-symm.wvr.c[2566,2579] [2023-11-10 12:09:39,523 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 12:09:39,530 INFO L202 MainTranslator]: Completed pre-run [2023-11-10 12:09:39,558 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/chl-chromosome-opt-symm.wvr.c[2566,2579] [2023-11-10 12:09:39,560 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 12:09:39,570 INFO L206 MainTranslator]: Completed translation [2023-11-10 12:09:39,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:09:39 WrapperNode [2023-11-10 12:09:39,570 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-10 12:09:39,571 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-10 12:09:39,571 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-10 12:09:39,571 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-10 12:09:39,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:09:39" (1/1) ... [2023-11-10 12:09:39,589 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:09:39" (1/1) ... [2023-11-10 12:09:39,612 INFO L138 Inliner]: procedures = 24, calls = 35, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 179 [2023-11-10 12:09:39,613 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-10 12:09:39,613 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-10 12:09:39,613 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-10 12:09:39,613 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-10 12:09:39,618 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:09:39" (1/1) ... [2023-11-10 12:09:39,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:09:39" (1/1) ... [2023-11-10 12:09:39,631 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:09:39" (1/1) ... [2023-11-10 12:09:39,631 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:09:39" (1/1) ... [2023-11-10 12:09:39,635 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:09:39" (1/1) ... [2023-11-10 12:09:39,638 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:09:39" (1/1) ... [2023-11-10 12:09:39,639 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:09:39" (1/1) ... [2023-11-10 12:09:39,639 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:09:39" (1/1) ... [2023-11-10 12:09:39,651 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-10 12:09:39,652 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-10 12:09:39,652 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-10 12:09:39,652 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-10 12:09:39,653 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:09:39" (1/1) ... [2023-11-10 12:09:39,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 12:09:39,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:09:39,673 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) [2023-11-10 12:09:39,675 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 [2023-11-10 12:09:39,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-10 12:09:39,694 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-10 12:09:39,694 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-10 12:09:39,694 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-10 12:09:39,694 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-10 12:09:39,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-10 12:09:39,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-10 12:09:39,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-10 12:09:39,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-10 12:09:39,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-10 12:09:39,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-10 12:09:39,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-10 12:09:39,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-10 12:09:39,696 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-10 12:09:39,778 INFO L236 CfgBuilder]: Building ICFG [2023-11-10 12:09:39,780 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-10 12:09:40,018 INFO L277 CfgBuilder]: Performing block encoding [2023-11-10 12:09:40,036 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-10 12:09:40,037 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-10 12:09:40,040 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:09:40 BoogieIcfgContainer [2023-11-10 12:09:40,040 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-10 12:09:40,042 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-10 12:09:40,042 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-10 12:09:40,044 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-10 12:09:40,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 12:09:39" (1/3) ... [2023-11-10 12:09:40,045 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d00156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:09:40, skipping insertion in model container [2023-11-10 12:09:40,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:09:39" (2/3) ... [2023-11-10 12:09:40,045 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d00156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:09:40, skipping insertion in model container [2023-11-10 12:09:40,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:09:40" (3/3) ... [2023-11-10 12:09:40,046 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-opt-symm.wvr.c [2023-11-10 12:09:40,057 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-10 12:09:40,057 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-10 12:09:40,058 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-10 12:09:40,116 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-10 12:09:40,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 214 transitions, 442 flow [2023-11-10 12:09:40,207 INFO L124 PetriNetUnfolderBase]: 19/212 cut-off events. [2023-11-10 12:09:40,208 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-10 12:09:40,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 212 events. 19/212 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 218 event pairs, 0 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 152. Up to 3 conditions per place. [2023-11-10 12:09:40,212 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 214 transitions, 442 flow [2023-11-10 12:09:40,216 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 203 transitions, 418 flow [2023-11-10 12:09:40,225 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 12:09:40,229 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@3b421a7c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 12:09:40,230 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-10 12:09:40,269 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 12:09:40,269 INFO L124 PetriNetUnfolderBase]: 19/202 cut-off events. [2023-11-10 12:09:40,269 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-10 12:09:40,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:09:40,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:09:40,270 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:09:40,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:09:40,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1677984603, now seen corresponding path program 1 times [2023-11-10 12:09:40,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:09:40,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292574194] [2023-11-10 12:09:40,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:09:40,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:09:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:09:40,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:09:40,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:09:40,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292574194] [2023-11-10 12:09:40,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292574194] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:09:40,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:09:40,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-10 12:09:40,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977386203] [2023-11-10 12:09:40,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:09:40,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-10 12:09:40,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:09:40,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-10 12:09:40,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-10 12:09:40,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 214 [2023-11-10 12:09:40,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 203 transitions, 418 flow. Second operand has 5 states, 5 states have (on average 173.2) internal successors, (866), 5 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:40,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:09:40,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 214 [2023-11-10 12:09:40,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:09:40,849 INFO L124 PetriNetUnfolderBase]: 8/206 cut-off events. [2023-11-10 12:09:40,849 INFO L125 PetriNetUnfolderBase]: For 9/10 co-relation queries the response was YES. [2023-11-10 12:09:40,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 206 events. 8/206 cut-off events. For 9/10 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 203 event pairs, 0 based on Foata normal form. 11/202 useless extension candidates. Maximal degree in co-relation 197. Up to 22 conditions per place. [2023-11-10 12:09:40,853 INFO L140 encePairwiseOnDemand]: 189/214 looper letters, 30 selfloop transitions, 12 changer transitions 5/200 dead transitions. [2023-11-10 12:09:40,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 200 transitions, 496 flow [2023-11-10 12:09:40,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-10 12:09:40,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-10 12:09:40,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 897 transitions. [2023-11-10 12:09:40,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8383177570093457 [2023-11-10 12:09:40,869 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 897 transitions. [2023-11-10 12:09:40,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 897 transitions. [2023-11-10 12:09:40,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:09:40,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 897 transitions. [2023-11-10 12:09:40,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 179.4) internal successors, (897), 5 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:40,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 214.0) internal successors, (1284), 6 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:40,884 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 214.0) internal successors, (1284), 6 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:40,885 INFO L175 Difference]: Start difference. First operand has 191 places, 203 transitions, 418 flow. Second operand 5 states and 897 transitions. [2023-11-10 12:09:40,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 200 transitions, 496 flow [2023-11-10 12:09:40,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 200 transitions, 488 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-10 12:09:40,893 INFO L231 Difference]: Finished difference. Result has 192 places, 189 transitions, 418 flow [2023-11-10 12:09:40,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=418, PETRI_PLACES=192, PETRI_TRANSITIONS=189} [2023-11-10 12:09:40,897 INFO L281 CegarLoopForPetriNet]: 191 programPoint places, 1 predicate places. [2023-11-10 12:09:40,898 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 189 transitions, 418 flow [2023-11-10 12:09:40,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 173.2) internal successors, (866), 5 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:40,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:09:40,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:09:40,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-10 12:09:40,900 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:09:40,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:09:40,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1681426266, now seen corresponding path program 1 times [2023-11-10 12:09:40,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:09:40,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435683409] [2023-11-10 12:09:40,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:09:40,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:09:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:09:41,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-10 12:09:41,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:09:41,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435683409] [2023-11-10 12:09:41,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435683409] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:09:41,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120657136] [2023-11-10 12:09:41,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:09:41,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:09:41,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:09:41,216 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) [2023-11-10 12:09:41,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-10 12:09:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:09:41,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-10 12:09:41,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:09:41,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-10 12:09:41,503 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:09:41,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-10 12:09:41,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120657136] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:09:41,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:09:41,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-10 12:09:41,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706280509] [2023-11-10 12:09:41,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:09:41,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-10 12:09:41,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:09:41,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-10 12:09:41,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-11-10 12:09:41,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 214 [2023-11-10 12:09:41,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 189 transitions, 418 flow. Second operand has 15 states, 15 states have (on average 169.73333333333332) internal successors, (2546), 15 states have internal predecessors, (2546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:41,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:09:41,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 214 [2023-11-10 12:09:41,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:09:41,812 INFO L124 PetriNetUnfolderBase]: 8/221 cut-off events. [2023-11-10 12:09:41,812 INFO L125 PetriNetUnfolderBase]: For 12/13 co-relation queries the response was YES. [2023-11-10 12:09:41,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 221 events. 8/221 cut-off events. For 12/13 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 176 event pairs, 0 based on Foata normal form. 4/217 useless extension candidates. Maximal degree in co-relation 117. Up to 16 conditions per place. [2023-11-10 12:09:41,816 INFO L140 encePairwiseOnDemand]: 194/214 looper letters, 32 selfloop transitions, 26 changer transitions 0/209 dead transitions. [2023-11-10 12:09:41,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 209 transitions, 578 flow [2023-11-10 12:09:41,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-10 12:09:41,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-10 12:09:41,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1888 transitions. [2023-11-10 12:09:41,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8020390824129142 [2023-11-10 12:09:41,819 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1888 transitions. [2023-11-10 12:09:41,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1888 transitions. [2023-11-10 12:09:41,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:09:41,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1888 transitions. [2023-11-10 12:09:41,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 171.63636363636363) internal successors, (1888), 11 states have internal predecessors, (1888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:41,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 214.0) internal successors, (2568), 12 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:41,828 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 214.0) internal successors, (2568), 12 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:41,828 INFO L175 Difference]: Start difference. First operand has 192 places, 189 transitions, 418 flow. Second operand 11 states and 1888 transitions. [2023-11-10 12:09:41,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 209 transitions, 578 flow [2023-11-10 12:09:41,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 209 transitions, 558 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-10 12:09:41,833 INFO L231 Difference]: Finished difference. Result has 197 places, 201 transitions, 518 flow [2023-11-10 12:09:41,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=518, PETRI_PLACES=197, PETRI_TRANSITIONS=201} [2023-11-10 12:09:41,834 INFO L281 CegarLoopForPetriNet]: 191 programPoint places, 6 predicate places. [2023-11-10 12:09:41,835 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 201 transitions, 518 flow [2023-11-10 12:09:41,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 169.73333333333332) internal successors, (2546), 15 states have internal predecessors, (2546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:41,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:09:41,836 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:09:41,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-10 12:09:42,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:09:42,041 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:09:42,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:09:42,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1596035132, now seen corresponding path program 2 times [2023-11-10 12:09:42,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:09:42,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809311978] [2023-11-10 12:09:42,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:09:42,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:09:42,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:09:42,307 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-10 12:09:42,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:09:42,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809311978] [2023-11-10 12:09:42,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809311978] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:09:42,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074121818] [2023-11-10 12:09:42,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-10 12:09:42,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:09:42,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:09:42,309 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) [2023-11-10 12:09:42,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-10 12:09:42,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-10 12:09:42,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:09:42,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-10 12:09:42,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:09:42,530 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-10 12:09:42,530 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-10 12:09:42,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074121818] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:09:42,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-10 12:09:42,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2023-11-10 12:09:42,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236072935] [2023-11-10 12:09:42,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:09:42,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 12:09:42,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:09:42,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 12:09:42,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-11-10 12:09:42,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 214 [2023-11-10 12:09:42,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 201 transitions, 518 flow. Second operand has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:42,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:09:42,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 214 [2023-11-10 12:09:42,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:09:42,767 INFO L124 PetriNetUnfolderBase]: 142/763 cut-off events. [2023-11-10 12:09:42,767 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-10 12:09:42,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1082 conditions, 763 events. 142/763 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3855 event pairs, 2 based on Foata normal form. 0/693 useless extension candidates. Maximal degree in co-relation 902. Up to 59 conditions per place. [2023-11-10 12:09:42,771 INFO L140 encePairwiseOnDemand]: 204/214 looper letters, 67 selfloop transitions, 18 changer transitions 1/265 dead transitions. [2023-11-10 12:09:42,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 265 transitions, 828 flow [2023-11-10 12:09:42,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-10 12:09:42,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-10 12:09:42,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1890 transitions. [2023-11-10 12:09:42,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.883177570093458 [2023-11-10 12:09:42,774 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1890 transitions. [2023-11-10 12:09:42,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1890 transitions. [2023-11-10 12:09:42,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:09:42,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1890 transitions. [2023-11-10 12:09:42,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 189.0) internal successors, (1890), 10 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:42,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 214.0) internal successors, (2354), 11 states have internal predecessors, (2354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:42,782 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 214.0) internal successors, (2354), 11 states have internal predecessors, (2354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:42,782 INFO L175 Difference]: Start difference. First operand has 197 places, 201 transitions, 518 flow. Second operand 10 states and 1890 transitions. [2023-11-10 12:09:42,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 265 transitions, 828 flow [2023-11-10 12:09:42,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 265 transitions, 804 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-10 12:09:42,789 INFO L231 Difference]: Finished difference. Result has 212 places, 214 transitions, 618 flow [2023-11-10 12:09:42,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=618, PETRI_PLACES=212, PETRI_TRANSITIONS=214} [2023-11-10 12:09:42,790 INFO L281 CegarLoopForPetriNet]: 191 programPoint places, 21 predicate places. [2023-11-10 12:09:42,790 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 214 transitions, 618 flow [2023-11-10 12:09:42,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:42,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:09:42,791 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:09:42,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-10 12:09:42,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-10 12:09:42,996 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:09:42,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:09:42,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1624029986, now seen corresponding path program 3 times [2023-11-10 12:09:42,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:09:42,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954167549] [2023-11-10 12:09:42,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:09:42,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:09:43,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:09:43,206 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-10 12:09:43,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:09:43,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954167549] [2023-11-10 12:09:43,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954167549] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:09:43,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147280864] [2023-11-10 12:09:43,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-10 12:09:43,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:09:43,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:09:43,219 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) [2023-11-10 12:09:43,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-10 12:09:43,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-10 12:09:43,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:09:43,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-10 12:09:43,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:09:43,418 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-10 12:09:43,419 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-10 12:09:43,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147280864] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:09:43,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-10 12:09:43,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2023-11-10 12:09:43,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680946596] [2023-11-10 12:09:43,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:09:43,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 12:09:43,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:09:43,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 12:09:43,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-11-10 12:09:43,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 214 [2023-11-10 12:09:43,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 214 transitions, 618 flow. Second operand has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:43,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:09:43,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 214 [2023-11-10 12:09:43,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:09:43,786 INFO L124 PetriNetUnfolderBase]: 456/2159 cut-off events. [2023-11-10 12:09:43,786 INFO L125 PetriNetUnfolderBase]: For 276/279 co-relation queries the response was YES. [2023-11-10 12:09:43,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3253 conditions, 2159 events. 456/2159 cut-off events. For 276/279 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 16196 event pairs, 133 based on Foata normal form. 0/1935 useless extension candidates. Maximal degree in co-relation 3075. Up to 327 conditions per place. [2023-11-10 12:09:43,801 INFO L140 encePairwiseOnDemand]: 204/214 looper letters, 61 selfloop transitions, 14 changer transitions 1/268 dead transitions. [2023-11-10 12:09:43,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 268 transitions, 882 flow [2023-11-10 12:09:43,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-10 12:09:43,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-10 12:09:43,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1520 transitions. [2023-11-10 12:09:43,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8878504672897196 [2023-11-10 12:09:43,805 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1520 transitions. [2023-11-10 12:09:43,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1520 transitions. [2023-11-10 12:09:43,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:09:43,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1520 transitions. [2023-11-10 12:09:43,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:43,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 214.0) internal successors, (1926), 9 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:43,813 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 214.0) internal successors, (1926), 9 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:43,813 INFO L175 Difference]: Start difference. First operand has 212 places, 214 transitions, 618 flow. Second operand 8 states and 1520 transitions. [2023-11-10 12:09:43,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 268 transitions, 882 flow [2023-11-10 12:09:43,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 268 transitions, 882 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-10 12:09:43,821 INFO L231 Difference]: Finished difference. Result has 224 places, 227 transitions, 724 flow [2023-11-10 12:09:43,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=724, PETRI_PLACES=224, PETRI_TRANSITIONS=227} [2023-11-10 12:09:43,822 INFO L281 CegarLoopForPetriNet]: 191 programPoint places, 33 predicate places. [2023-11-10 12:09:43,822 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 227 transitions, 724 flow [2023-11-10 12:09:43,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:43,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:09:43,823 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:09:43,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-10 12:09:44,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:09:44,029 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:09:44,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:09:44,030 INFO L85 PathProgramCache]: Analyzing trace with hash 2064136618, now seen corresponding path program 4 times [2023-11-10 12:09:44,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:09:44,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19070285] [2023-11-10 12:09:44,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:09:44,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:09:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:09:44,228 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-10 12:09:44,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:09:44,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19070285] [2023-11-10 12:09:44,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19070285] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:09:44,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683454634] [2023-11-10 12:09:44,229 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-10 12:09:44,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:09:44,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:09:44,241 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) [2023-11-10 12:09:44,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-10 12:09:44,346 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-10 12:09:44,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:09:44,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-10 12:09:44,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:09:44,493 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-10 12:09:44,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:09:44,608 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-10 12:09:44,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683454634] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:09:44,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:09:44,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2023-11-10 12:09:44,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125943549] [2023-11-10 12:09:44,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:09:44,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-10 12:09:44,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:09:44,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-10 12:09:44,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2023-11-10 12:09:44,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 214 [2023-11-10 12:09:44,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 227 transitions, 724 flow. Second operand has 22 states, 22 states have (on average 169.45454545454547) internal successors, (3728), 22 states have internal predecessors, (3728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:44,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:09:44,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 214 [2023-11-10 12:09:44,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:09:45,040 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([581] thread2EXIT-->L90-2: Formula: (and (= 0 v_thread2Thread1of1ForFork1_thidvar2_4) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem22#1_6| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_thread2Thread1of1ForFork1_thidvar0_4) (= 0 v_thread2Thread1of1ForFork1_thidvar1_4)) InVars {thread2Thread1of1ForFork1_thidvar2=v_thread2Thread1of1ForFork1_thidvar2_4, ULTIMATE.start_main_#t~mem22#1=|v_ULTIMATE.start_main_#t~mem22#1_6|, thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_4, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_4} OutVars{thread2Thread1of1ForFork1_thidvar2=v_thread2Thread1of1ForFork1_thidvar2_4, ULTIMATE.start_main_#t~mem22#1=|v_ULTIMATE.start_main_#t~mem22#1_6|, thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_4, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_4} AuxVars[] AssignedVars[][241], [Black: 2088#(<= |thread2Thread1of1ForFork1_~i~1#1| 0), Black: 2202#(and (<= |thread2Thread1of1ForFork1_~i~1#1| 0) (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 1) (not (= ~isNullA~0 0))), 1548#(not (= ~isNullB~0 0)), Black: 1092#(and (<= 5 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= 5 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 1)), Black: 1098#(and (<= 5 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= 5 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= (+ |ULTIMATE.start_create_fresh_int_array_~i~2#1| 1) |ULTIMATE.start_create_fresh_int_array_~size#1|)), Black: 1084#(and (<= 5 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= 5 |ULTIMATE.start_create_fresh_int_array_#in~size#1|)), 2112#(and (<= |thread2Thread1of1ForFork1_~i~1#1| 0) (not (= ~isNullA~0 0))), Black: 1643#(and (= |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| 1) (= |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| 1) (not (= ~isNullB~0 0))), Black: 1645#(and (= |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| 1) (not (= ~isNullB~0 0))), Black: 1647#(and (= |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| 1) (<= |thread1Thread1of1ForFork0_~i~0#1| 0) (= |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| 1) (not (= ~isNullB~0 0))), Black: 1641#(and (or (and (= |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| 1) (not (= ~isNullB~0 0))) (and (= ~isNullB~0 0) (= |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| 0))) (or (and (= |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| 1) (not (= ~isNullB~0 0))) (and (= ~isNullB~0 0) (= |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| 0)))), Black: 213#(and (<= 5 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= 5 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 0)), Black: 1567#(and (<= |thread1Thread1of1ForFork0_~i~0#1| 0) (not (= ~isNullB~0 0))), 2210#true, Black: 1537#(or (and (= |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| 1) (not (= ~isNullB~0 0))) (and (= ~isNullB~0 0) (= |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| 0))), Black: 1103#true, Black: 1649#(and (= |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| 1) (<= |thread1Thread1of1ForFork0_~i~0#1| 0) (not (= ~isNullB~0 0))), Black: 2198#(and (<= |thread2Thread1of1ForFork1_~i~1#1| 0) (or (and (= |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| 1) (not (= ~isNullA~0 0))) (and (= |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| 0) (= ~isNullA~0 0))) (or (and (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 0) (= ~isNullA~0 0)) (and (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 1) (not (= ~isNullA~0 0))))), Black: 2101#(and (<= |thread2Thread1of1ForFork1_~i~1#1| 0) (or (and (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 0) (= ~isNullA~0 0)) (and (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 1) (not (= ~isNullA~0 0))))), 121#L90-2true, Black: 2200#(and (<= |thread2Thread1of1ForFork1_~i~1#1| 0) (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 1) (= |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| 1) (not (= ~isNullA~0 0)))]) [2023-11-10 12:09:45,040 INFO L294 olderBase$Statistics]: this new event has 223 ancestors and is cut-off event [2023-11-10 12:09:45,040 INFO L297 olderBase$Statistics]: existing Event has 211 ancestors and is cut-off event [2023-11-10 12:09:45,040 INFO L297 olderBase$Statistics]: existing Event has 211 ancestors and is cut-off event [2023-11-10 12:09:45,040 INFO L297 olderBase$Statistics]: existing Event has 199 ancestors and is cut-off event [2023-11-10 12:09:45,069 INFO L124 PetriNetUnfolderBase]: 129/1247 cut-off events. [2023-11-10 12:09:45,070 INFO L125 PetriNetUnfolderBase]: For 364/392 co-relation queries the response was YES. [2023-11-10 12:09:45,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1930 conditions, 1247 events. 129/1247 cut-off events. For 364/392 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 8402 event pairs, 19 based on Foata normal form. 5/1167 useless extension candidates. Maximal degree in co-relation 1619. Up to 50 conditions per place. [2023-11-10 12:09:45,080 INFO L140 encePairwiseOnDemand]: 194/214 looper letters, 40 selfloop transitions, 38 changer transitions 0/255 dead transitions. [2023-11-10 12:09:45,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 255 transitions, 992 flow [2023-11-10 12:09:45,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-10 12:09:45,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-10 12:09:45,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2904 transitions. [2023-11-10 12:09:45,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7982407916437603 [2023-11-10 12:09:45,087 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2904 transitions. [2023-11-10 12:09:45,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2904 transitions. [2023-11-10 12:09:45,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:09:45,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2904 transitions. [2023-11-10 12:09:45,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 170.8235294117647) internal successors, (2904), 17 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:45,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 214.0) internal successors, (3852), 18 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:45,102 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 214.0) internal successors, (3852), 18 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:45,102 INFO L175 Difference]: Start difference. First operand has 224 places, 227 transitions, 724 flow. Second operand 17 states and 2904 transitions. [2023-11-10 12:09:45,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 255 transitions, 992 flow [2023-11-10 12:09:45,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 255 transitions, 992 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-10 12:09:45,110 INFO L231 Difference]: Finished difference. Result has 243 places, 241 transitions, 908 flow [2023-11-10 12:09:45,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=724, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=908, PETRI_PLACES=243, PETRI_TRANSITIONS=241} [2023-11-10 12:09:45,112 INFO L281 CegarLoopForPetriNet]: 191 programPoint places, 52 predicate places. [2023-11-10 12:09:45,112 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 241 transitions, 908 flow [2023-11-10 12:09:45,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 169.45454545454547) internal successors, (3728), 22 states have internal predecessors, (3728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:45,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:09:45,114 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:09:45,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-10 12:09:45,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:09:45,320 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:09:45,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:09:45,321 INFO L85 PathProgramCache]: Analyzing trace with hash -2101273732, now seen corresponding path program 5 times [2023-11-10 12:09:45,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:09:45,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446822174] [2023-11-10 12:09:45,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:09:45,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:09:45,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:09:45,536 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-10 12:09:45,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:09:45,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446822174] [2023-11-10 12:09:45,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446822174] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:09:45,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:09:45,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 12:09:45,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349003637] [2023-11-10 12:09:45,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:09:45,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 12:09:45,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:09:45,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 12:09:45,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-10 12:09:45,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 214 [2023-11-10 12:09:45,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 241 transitions, 908 flow. Second operand has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:45,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:09:45,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 214 [2023-11-10 12:09:45,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:09:46,100 INFO L124 PetriNetUnfolderBase]: 544/2867 cut-off events. [2023-11-10 12:09:46,100 INFO L125 PetriNetUnfolderBase]: For 1350/1448 co-relation queries the response was YES. [2023-11-10 12:09:46,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5011 conditions, 2867 events. 544/2867 cut-off events. For 1350/1448 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 23764 event pairs, 99 based on Foata normal form. 10/2670 useless extension candidates. Maximal degree in co-relation 4709. Up to 519 conditions per place. [2023-11-10 12:09:46,125 INFO L140 encePairwiseOnDemand]: 205/214 looper letters, 69 selfloop transitions, 15 changer transitions 6/296 dead transitions. [2023-11-10 12:09:46,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 296 transitions, 1300 flow [2023-11-10 12:09:46,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-10 12:09:46,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-10 12:09:46,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1515 transitions. [2023-11-10 12:09:46,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.884929906542056 [2023-11-10 12:09:46,130 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1515 transitions. [2023-11-10 12:09:46,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1515 transitions. [2023-11-10 12:09:46,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:09:46,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1515 transitions. [2023-11-10 12:09:46,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 189.375) internal successors, (1515), 8 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:46,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 214.0) internal successors, (1926), 9 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:46,137 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 214.0) internal successors, (1926), 9 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:46,137 INFO L175 Difference]: Start difference. First operand has 243 places, 241 transitions, 908 flow. Second operand 8 states and 1515 transitions. [2023-11-10 12:09:46,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 296 transitions, 1300 flow [2023-11-10 12:09:46,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 296 transitions, 1248 flow, removed 8 selfloop flow, removed 8 redundant places. [2023-11-10 12:09:46,149 INFO L231 Difference]: Finished difference. Result has 247 places, 252 transitions, 982 flow [2023-11-10 12:09:46,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=982, PETRI_PLACES=247, PETRI_TRANSITIONS=252} [2023-11-10 12:09:46,151 INFO L281 CegarLoopForPetriNet]: 191 programPoint places, 56 predicate places. [2023-11-10 12:09:46,151 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 252 transitions, 982 flow [2023-11-10 12:09:46,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:46,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:09:46,152 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:09:46,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-10 12:09:46,152 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:09:46,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:09:46,152 INFO L85 PathProgramCache]: Analyzing trace with hash 23958294, now seen corresponding path program 6 times [2023-11-10 12:09:46,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:09:46,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48405325] [2023-11-10 12:09:46,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:09:46,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:09:46,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:09:46,328 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-10 12:09:46,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:09:46,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48405325] [2023-11-10 12:09:46,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48405325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:09:46,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:09:46,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 12:09:46,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953931816] [2023-11-10 12:09:46,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:09:46,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 12:09:46,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:09:46,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 12:09:46,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-10 12:09:46,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 214 [2023-11-10 12:09:46,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 252 transitions, 982 flow. Second operand has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:46,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:09:46,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 214 [2023-11-10 12:09:46,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:09:46,846 INFO L124 PetriNetUnfolderBase]: 569/2852 cut-off events. [2023-11-10 12:09:46,846 INFO L125 PetriNetUnfolderBase]: For 2573/2732 co-relation queries the response was YES. [2023-11-10 12:09:46,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5406 conditions, 2852 events. 569/2852 cut-off events. For 2573/2732 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 23835 event pairs, 118 based on Foata normal form. 31/2651 useless extension candidates. Maximal degree in co-relation 5124. Up to 759 conditions per place. [2023-11-10 12:09:46,868 INFO L140 encePairwiseOnDemand]: 207/214 looper letters, 59 selfloop transitions, 15 changer transitions 4/284 dead transitions. [2023-11-10 12:09:46,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 284 transitions, 1347 flow [2023-11-10 12:09:46,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-10 12:09:46,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-10 12:09:46,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1131 transitions. [2023-11-10 12:09:46,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8808411214953271 [2023-11-10 12:09:46,871 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1131 transitions. [2023-11-10 12:09:46,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1131 transitions. [2023-11-10 12:09:46,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:09:46,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1131 transitions. [2023-11-10 12:09:46,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 188.5) internal successors, (1131), 6 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:46,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 214.0) internal successors, (1498), 7 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:46,877 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 214.0) internal successors, (1498), 7 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:46,877 INFO L175 Difference]: Start difference. First operand has 247 places, 252 transitions, 982 flow. Second operand 6 states and 1131 transitions. [2023-11-10 12:09:46,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 284 transitions, 1347 flow [2023-11-10 12:09:46,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 284 transitions, 1337 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-11-10 12:09:46,890 INFO L231 Difference]: Finished difference. Result has 255 places, 259 transitions, 1109 flow [2023-11-10 12:09:46,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=974, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1109, PETRI_PLACES=255, PETRI_TRANSITIONS=259} [2023-11-10 12:09:46,891 INFO L281 CegarLoopForPetriNet]: 191 programPoint places, 64 predicate places. [2023-11-10 12:09:46,891 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 259 transitions, 1109 flow [2023-11-10 12:09:46,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:46,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:09:46,892 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:09:46,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-10 12:09:46,892 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:09:46,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:09:46,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1596619070, now seen corresponding path program 7 times [2023-11-10 12:09:46,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:09:46,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253863818] [2023-11-10 12:09:46,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:09:46,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:09:46,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:09:47,076 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-10 12:09:47,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:09:47,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253863818] [2023-11-10 12:09:47,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253863818] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:09:47,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:09:47,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 12:09:47,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757440697] [2023-11-10 12:09:47,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:09:47,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 12:09:47,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:09:47,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 12:09:47,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-10 12:09:47,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 214 [2023-11-10 12:09:47,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 259 transitions, 1109 flow. Second operand has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:47,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:09:47,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 214 [2023-11-10 12:09:47,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:09:47,724 INFO L124 PetriNetUnfolderBase]: 647/3546 cut-off events. [2023-11-10 12:09:47,724 INFO L125 PetriNetUnfolderBase]: For 3929/4171 co-relation queries the response was YES. [2023-11-10 12:09:47,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6628 conditions, 3546 events. 647/3546 cut-off events. For 3929/4171 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 32375 event pairs, 108 based on Foata normal form. 42/3318 useless extension candidates. Maximal degree in co-relation 6342. Up to 613 conditions per place. [2023-11-10 12:09:47,759 INFO L140 encePairwiseOnDemand]: 205/214 looper letters, 68 selfloop transitions, 21 changer transitions 2/297 dead transitions. [2023-11-10 12:09:47,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 297 transitions, 1521 flow [2023-11-10 12:09:47,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-10 12:09:47,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-10 12:09:47,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1143 transitions. [2023-11-10 12:09:47,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8901869158878505 [2023-11-10 12:09:47,762 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1143 transitions. [2023-11-10 12:09:47,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1143 transitions. [2023-11-10 12:09:47,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:09:47,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1143 transitions. [2023-11-10 12:09:47,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 190.5) internal successors, (1143), 6 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:47,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 214.0) internal successors, (1498), 7 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:47,768 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 214.0) internal successors, (1498), 7 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:47,768 INFO L175 Difference]: Start difference. First operand has 255 places, 259 transitions, 1109 flow. Second operand 6 states and 1143 transitions. [2023-11-10 12:09:47,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 297 transitions, 1521 flow [2023-11-10 12:09:47,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 297 transitions, 1511 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-11-10 12:09:47,785 INFO L231 Difference]: Finished difference. Result has 264 places, 269 transitions, 1294 flow [2023-11-10 12:09:47,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=1103, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1294, PETRI_PLACES=264, PETRI_TRANSITIONS=269} [2023-11-10 12:09:47,788 INFO L281 CegarLoopForPetriNet]: 191 programPoint places, 73 predicate places. [2023-11-10 12:09:47,788 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 269 transitions, 1294 flow [2023-11-10 12:09:47,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:47,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:09:47,790 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:09:47,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-10 12:09:47,791 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:09:47,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:09:47,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1820746962, now seen corresponding path program 8 times [2023-11-10 12:09:47,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:09:47,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878137006] [2023-11-10 12:09:47,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:09:47,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:09:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:09:47,999 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-10 12:09:47,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:09:48,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878137006] [2023-11-10 12:09:48,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878137006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:09:48,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:09:48,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 12:09:48,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607760424] [2023-11-10 12:09:48,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:09:48,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 12:09:48,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:09:48,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 12:09:48,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-10 12:09:48,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 214 [2023-11-10 12:09:48,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 269 transitions, 1294 flow. Second operand has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:48,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:09:48,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 214 [2023-11-10 12:09:48,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:09:48,971 INFO L124 PetriNetUnfolderBase]: 955/5497 cut-off events. [2023-11-10 12:09:48,972 INFO L125 PetriNetUnfolderBase]: For 6816/7127 co-relation queries the response was YES. [2023-11-10 12:09:49,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10183 conditions, 5497 events. 955/5497 cut-off events. For 6816/7127 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 58240 event pairs, 75 based on Foata normal form. 59/5160 useless extension candidates. Maximal degree in co-relation 9893. Up to 666 conditions per place. [2023-11-10 12:09:49,022 INFO L140 encePairwiseOnDemand]: 204/214 looper letters, 91 selfloop transitions, 41 changer transitions 1/339 dead transitions. [2023-11-10 12:09:49,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 339 transitions, 2089 flow [2023-11-10 12:09:49,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-10 12:09:49,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-10 12:09:49,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1336 transitions. [2023-11-10 12:09:49,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8918558077436582 [2023-11-10 12:09:49,026 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1336 transitions. [2023-11-10 12:09:49,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1336 transitions. [2023-11-10 12:09:49,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:09:49,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1336 transitions. [2023-11-10 12:09:49,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 190.85714285714286) internal successors, (1336), 7 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:49,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 214.0) internal successors, (1712), 8 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:49,033 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 214.0) internal successors, (1712), 8 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:49,034 INFO L175 Difference]: Start difference. First operand has 264 places, 269 transitions, 1294 flow. Second operand 7 states and 1336 transitions. [2023-11-10 12:09:49,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 339 transitions, 2089 flow [2023-11-10 12:09:49,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 339 transitions, 2077 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-10 12:09:49,066 INFO L231 Difference]: Finished difference. Result has 275 places, 295 transitions, 1768 flow [2023-11-10 12:09:49,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1768, PETRI_PLACES=275, PETRI_TRANSITIONS=295} [2023-11-10 12:09:49,068 INFO L281 CegarLoopForPetriNet]: 191 programPoint places, 84 predicate places. [2023-11-10 12:09:49,068 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 295 transitions, 1768 flow [2023-11-10 12:09:49,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:49,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:09:49,069 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:09:49,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-10 12:09:49,069 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:09:49,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:09:49,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1246726368, now seen corresponding path program 9 times [2023-11-10 12:09:49,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:09:49,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620619732] [2023-11-10 12:09:49,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:09:49,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:09:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:09:49,298 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-10 12:09:49,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:09:49,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620619732] [2023-11-10 12:09:49,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620619732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:09:49,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:09:49,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 12:09:49,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862485661] [2023-11-10 12:09:49,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:09:49,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 12:09:49,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:09:49,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 12:09:49,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-10 12:09:49,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 214 [2023-11-10 12:09:49,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 295 transitions, 1768 flow. Second operand has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:49,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:09:49,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 214 [2023-11-10 12:09:49,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:09:50,410 INFO L124 PetriNetUnfolderBase]: 986/5670 cut-off events. [2023-11-10 12:09:50,410 INFO L125 PetriNetUnfolderBase]: For 9607/10090 co-relation queries the response was YES. [2023-11-10 12:09:50,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11308 conditions, 5670 events. 986/5670 cut-off events. For 9607/10090 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 60693 event pairs, 17 based on Foata normal form. 106/5381 useless extension candidates. Maximal degree in co-relation 11013. Up to 623 conditions per place. [2023-11-10 12:09:50,469 INFO L140 encePairwiseOnDemand]: 203/214 looper letters, 103 selfloop transitions, 49 changer transitions 5/363 dead transitions. [2023-11-10 12:09:50,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 363 transitions, 2564 flow [2023-11-10 12:09:50,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-10 12:09:50,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-10 12:09:50,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1524 transitions. [2023-11-10 12:09:50,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8901869158878505 [2023-11-10 12:09:50,474 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1524 transitions. [2023-11-10 12:09:50,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1524 transitions. [2023-11-10 12:09:50,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:09:50,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1524 transitions. [2023-11-10 12:09:50,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 190.5) internal successors, (1524), 8 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:50,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 214.0) internal successors, (1926), 9 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:50,481 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 214.0) internal successors, (1926), 9 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:50,481 INFO L175 Difference]: Start difference. First operand has 275 places, 295 transitions, 1768 flow. Second operand 8 states and 1524 transitions. [2023-11-10 12:09:50,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 363 transitions, 2564 flow [2023-11-10 12:09:50,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 363 transitions, 2524 flow, removed 20 selfloop flow, removed 0 redundant places. [2023-11-10 12:09:50,528 INFO L231 Difference]: Finished difference. Result has 285 places, 303 transitions, 1988 flow [2023-11-10 12:09:50,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=1728, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1988, PETRI_PLACES=285, PETRI_TRANSITIONS=303} [2023-11-10 12:09:50,530 INFO L281 CegarLoopForPetriNet]: 191 programPoint places, 94 predicate places. [2023-11-10 12:09:50,530 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 303 transitions, 1988 flow [2023-11-10 12:09:50,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:50,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:09:50,531 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:09:50,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-10 12:09:50,531 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:09:50,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:09:50,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1130734978, now seen corresponding path program 10 times [2023-11-10 12:09:50,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:09:50,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359635075] [2023-11-10 12:09:50,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:09:50,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:09:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:09:50,740 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-10 12:09:50,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:09:50,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359635075] [2023-11-10 12:09:50,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359635075] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:09:50,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:09:50,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 12:09:50,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926895751] [2023-11-10 12:09:50,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:09:50,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 12:09:50,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:09:50,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 12:09:50,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-10 12:09:50,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 214 [2023-11-10 12:09:50,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 303 transitions, 1988 flow. Second operand has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:50,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:09:50,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 214 [2023-11-10 12:09:50,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:09:52,080 INFO L124 PetriNetUnfolderBase]: 990/5667 cut-off events. [2023-11-10 12:09:52,080 INFO L125 PetriNetUnfolderBase]: For 11384/11909 co-relation queries the response was YES. [2023-11-10 12:09:52,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11695 conditions, 5667 events. 990/5667 cut-off events. For 11384/11909 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 60539 event pairs, 62 based on Foata normal form. 88/5351 useless extension candidates. Maximal degree in co-relation 11396. Up to 707 conditions per place. [2023-11-10 12:09:52,123 INFO L140 encePairwiseOnDemand]: 203/214 looper letters, 95 selfloop transitions, 54 changer transitions 5/360 dead transitions. [2023-11-10 12:09:52,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 360 transitions, 2630 flow [2023-11-10 12:09:52,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-10 12:09:52,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-10 12:09:52,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1526 transitions. [2023-11-10 12:09:52,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8913551401869159 [2023-11-10 12:09:52,127 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1526 transitions. [2023-11-10 12:09:52,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1526 transitions. [2023-11-10 12:09:52,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:09:52,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1526 transitions. [2023-11-10 12:09:52,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 190.75) internal successors, (1526), 8 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:52,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 214.0) internal successors, (1926), 9 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:52,134 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 214.0) internal successors, (1926), 9 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:52,134 INFO L175 Difference]: Start difference. First operand has 285 places, 303 transitions, 1988 flow. Second operand 8 states and 1526 transitions. [2023-11-10 12:09:52,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 360 transitions, 2630 flow [2023-11-10 12:09:52,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 360 transitions, 2605 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-10 12:09:52,174 INFO L231 Difference]: Finished difference. Result has 295 places, 309 transitions, 2218 flow [2023-11-10 12:09:52,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=1952, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2218, PETRI_PLACES=295, PETRI_TRANSITIONS=309} [2023-11-10 12:09:52,175 INFO L281 CegarLoopForPetriNet]: 191 programPoint places, 104 predicate places. [2023-11-10 12:09:52,175 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 309 transitions, 2218 flow [2023-11-10 12:09:52,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:52,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:09:52,176 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:09:52,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-10 12:09:52,177 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:09:52,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:09:52,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1026633442, now seen corresponding path program 11 times [2023-11-10 12:09:52,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:09:52,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95675900] [2023-11-10 12:09:52,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:09:52,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:09:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:09:52,348 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-10 12:09:52,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:09:52,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95675900] [2023-11-10 12:09:52,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95675900] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:09:52,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:09:52,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 12:09:52,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737334397] [2023-11-10 12:09:52,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:09:52,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 12:09:52,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:09:52,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 12:09:52,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-10 12:09:52,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 214 [2023-11-10 12:09:52,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 309 transitions, 2218 flow. Second operand has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:52,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:09:52,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 214 [2023-11-10 12:09:52,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:09:53,595 INFO L124 PetriNetUnfolderBase]: 991/6524 cut-off events. [2023-11-10 12:09:53,595 INFO L125 PetriNetUnfolderBase]: For 10953/11211 co-relation queries the response was YES. [2023-11-10 12:09:53,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13174 conditions, 6524 events. 991/6524 cut-off events. For 10953/11211 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 71444 event pairs, 212 based on Foata normal form. 100/6150 useless extension candidates. Maximal degree in co-relation 12871. Up to 724 conditions per place. [2023-11-10 12:09:53,637 INFO L140 encePairwiseOnDemand]: 205/214 looper letters, 54 selfloop transitions, 19 changer transitions 0/347 dead transitions. [2023-11-10 12:09:53,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 347 transitions, 2546 flow [2023-11-10 12:09:53,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-10 12:09:53,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-10 12:09:53,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1138 transitions. [2023-11-10 12:09:53,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8862928348909658 [2023-11-10 12:09:53,640 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1138 transitions. [2023-11-10 12:09:53,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1138 transitions. [2023-11-10 12:09:53,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:09:53,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1138 transitions. [2023-11-10 12:09:53,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 189.66666666666666) internal successors, (1138), 6 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:53,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 214.0) internal successors, (1498), 7 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:53,644 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 214.0) internal successors, (1498), 7 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:53,644 INFO L175 Difference]: Start difference. First operand has 295 places, 309 transitions, 2218 flow. Second operand 6 states and 1138 transitions. [2023-11-10 12:09:53,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 347 transitions, 2546 flow [2023-11-10 12:09:53,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 347 transitions, 2453 flow, removed 20 selfloop flow, removed 4 redundant places. [2023-11-10 12:09:53,676 INFO L231 Difference]: Finished difference. Result has 299 places, 316 transitions, 2249 flow [2023-11-10 12:09:53,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=2125, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2249, PETRI_PLACES=299, PETRI_TRANSITIONS=316} [2023-11-10 12:09:53,676 INFO L281 CegarLoopForPetriNet]: 191 programPoint places, 108 predicate places. [2023-11-10 12:09:53,676 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 316 transitions, 2249 flow [2023-11-10 12:09:53,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:53,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:09:53,677 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:09:53,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-10 12:09:53,677 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:09:53,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:09:53,678 INFO L85 PathProgramCache]: Analyzing trace with hash -549162230, now seen corresponding path program 12 times [2023-11-10 12:09:53,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:09:53,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970202479] [2023-11-10 12:09:53,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:09:53,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:09:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:09:53,819 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-10 12:09:53,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:09:53,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970202479] [2023-11-10 12:09:53,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970202479] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:09:53,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:09:53,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 12:09:53,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882601359] [2023-11-10 12:09:53,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:09:53,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 12:09:53,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:09:53,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 12:09:53,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-10 12:09:53,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 214 [2023-11-10 12:09:53,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 316 transitions, 2249 flow. Second operand has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:53,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:09:53,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 214 [2023-11-10 12:09:53,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:09:55,521 INFO L124 PetriNetUnfolderBase]: 1547/11441 cut-off events. [2023-11-10 12:09:55,521 INFO L125 PetriNetUnfolderBase]: For 19713/20082 co-relation queries the response was YES. [2023-11-10 12:09:55,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22330 conditions, 11441 events. 1547/11441 cut-off events. For 19713/20082 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 145672 event pairs, 67 based on Foata normal form. 135/10772 useless extension candidates. Maximal degree in co-relation 22023. Up to 1249 conditions per place. [2023-11-10 12:09:55,608 INFO L140 encePairwiseOnDemand]: 203/214 looper letters, 75 selfloop transitions, 31 changer transitions 0/380 dead transitions. [2023-11-10 12:09:55,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 380 transitions, 2841 flow [2023-11-10 12:09:55,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-10 12:09:55,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-10 12:09:55,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1335 transitions. [2023-11-10 12:09:55,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8911882510013351 [2023-11-10 12:09:55,612 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1335 transitions. [2023-11-10 12:09:55,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1335 transitions. [2023-11-10 12:09:55,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:09:55,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1335 transitions. [2023-11-10 12:09:55,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 190.71428571428572) internal successors, (1335), 7 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:55,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 214.0) internal successors, (1712), 8 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:55,618 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 214.0) internal successors, (1712), 8 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:55,618 INFO L175 Difference]: Start difference. First operand has 299 places, 316 transitions, 2249 flow. Second operand 7 states and 1335 transitions. [2023-11-10 12:09:55,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 380 transitions, 2841 flow [2023-11-10 12:09:55,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 380 transitions, 2820 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-10 12:09:55,690 INFO L231 Difference]: Finished difference. Result has 309 places, 339 transitions, 2579 flow [2023-11-10 12:09:55,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=2237, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2579, PETRI_PLACES=309, PETRI_TRANSITIONS=339} [2023-11-10 12:09:55,692 INFO L281 CegarLoopForPetriNet]: 191 programPoint places, 118 predicate places. [2023-11-10 12:09:55,692 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 339 transitions, 2579 flow [2023-11-10 12:09:55,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:55,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:09:55,693 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:09:55,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-10 12:09:55,693 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:09:55,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:09:55,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1575497332, now seen corresponding path program 13 times [2023-11-10 12:09:55,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:09:55,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377688415] [2023-11-10 12:09:55,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:09:55,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:09:55,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:09:55,986 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-10 12:09:55,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:09:55,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377688415] [2023-11-10 12:09:55,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377688415] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:09:55,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:09:55,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 12:09:55,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753813802] [2023-11-10 12:09:55,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:09:55,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 12:09:55,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:09:55,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 12:09:55,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-10 12:09:55,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 214 [2023-11-10 12:09:55,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 339 transitions, 2579 flow. Second operand has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:55,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:09:55,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 214 [2023-11-10 12:09:55,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:09:58,356 INFO L124 PetriNetUnfolderBase]: 1611/11829 cut-off events. [2023-11-10 12:09:58,357 INFO L125 PetriNetUnfolderBase]: For 23783/24307 co-relation queries the response was YES. [2023-11-10 12:09:58,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24288 conditions, 11829 events. 1611/11829 cut-off events. For 23783/24307 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 152370 event pairs, 198 based on Foata normal form. 157/11138 useless extension candidates. Maximal degree in co-relation 23977. Up to 1673 conditions per place. [2023-11-10 12:09:58,470 INFO L140 encePairwiseOnDemand]: 205/214 looper letters, 75 selfloop transitions, 32 changer transitions 0/381 dead transitions. [2023-11-10 12:09:58,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 381 transitions, 3109 flow [2023-11-10 12:09:58,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-10 12:09:58,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-10 12:09:58,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1141 transitions. [2023-11-10 12:09:58,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8886292834890965 [2023-11-10 12:09:58,499 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1141 transitions. [2023-11-10 12:09:58,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1141 transitions. [2023-11-10 12:09:58,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:09:58,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1141 transitions. [2023-11-10 12:09:58,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 190.16666666666666) internal successors, (1141), 6 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:58,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 214.0) internal successors, (1498), 7 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:58,503 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 214.0) internal successors, (1498), 7 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:58,503 INFO L175 Difference]: Start difference. First operand has 309 places, 339 transitions, 2579 flow. Second operand 6 states and 1141 transitions. [2023-11-10 12:09:58,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 381 transitions, 3109 flow [2023-11-10 12:09:58,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 381 transitions, 3043 flow, removed 33 selfloop flow, removed 0 redundant places. [2023-11-10 12:09:58,589 INFO L231 Difference]: Finished difference. Result has 319 places, 353 transitions, 2839 flow [2023-11-10 12:09:58,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=2537, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2839, PETRI_PLACES=319, PETRI_TRANSITIONS=353} [2023-11-10 12:09:58,590 INFO L281 CegarLoopForPetriNet]: 191 programPoint places, 128 predicate places. [2023-11-10 12:09:58,591 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 353 transitions, 2839 flow [2023-11-10 12:09:58,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:58,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:09:58,591 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:09:58,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-10 12:09:58,591 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:09:58,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:09:58,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1743287213, now seen corresponding path program 1 times [2023-11-10 12:09:58,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:09:58,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291470894] [2023-11-10 12:09:58,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:09:58,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:09:58,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:09:58,965 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-10 12:09:58,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:09:58,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291470894] [2023-11-10 12:09:58,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291470894] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:09:58,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:09:58,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 12:09:58,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970660403] [2023-11-10 12:09:58,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:09:58,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 12:09:58,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:09:58,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 12:09:58,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-10 12:09:58,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 214 [2023-11-10 12:09:58,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 353 transitions, 2839 flow. Second operand has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:09:58,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:09:58,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 214 [2023-11-10 12:09:58,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:10:01,703 INFO L124 PetriNetUnfolderBase]: 1700/12769 cut-off events. [2023-11-10 12:10:01,703 INFO L125 PetriNetUnfolderBase]: For 27718/28255 co-relation queries the response was YES. [2023-11-10 12:10:01,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26457 conditions, 12769 events. 1700/12769 cut-off events. For 27718/28255 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 166897 event pairs, 308 based on Foata normal form. 108/11898 useless extension candidates. Maximal degree in co-relation 26141. Up to 1193 conditions per place. [2023-11-10 12:10:01,823 INFO L140 encePairwiseOnDemand]: 206/214 looper letters, 96 selfloop transitions, 19 changer transitions 6/395 dead transitions. [2023-11-10 12:10:01,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 395 transitions, 3427 flow [2023-11-10 12:10:01,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-10 12:10:01,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-10 12:10:01,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1312 transitions. [2023-11-10 12:10:01,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8758344459279038 [2023-11-10 12:10:01,825 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1312 transitions. [2023-11-10 12:10:01,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1312 transitions. [2023-11-10 12:10:01,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:10:01,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1312 transitions. [2023-11-10 12:10:01,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 187.42857142857142) internal successors, (1312), 7 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:01,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 214.0) internal successors, (1712), 8 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:01,829 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 214.0) internal successors, (1712), 8 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:01,830 INFO L175 Difference]: Start difference. First operand has 319 places, 353 transitions, 2839 flow. Second operand 7 states and 1312 transitions. [2023-11-10 12:10:01,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 395 transitions, 3427 flow [2023-11-10 12:10:01,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 395 transitions, 3407 flow, removed 10 selfloop flow, removed 0 redundant places. [2023-11-10 12:10:01,925 INFO L231 Difference]: Finished difference. Result has 329 places, 354 transitions, 2903 flow [2023-11-10 12:10:01,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=2825, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2903, PETRI_PLACES=329, PETRI_TRANSITIONS=354} [2023-11-10 12:10:01,926 INFO L281 CegarLoopForPetriNet]: 191 programPoint places, 138 predicate places. [2023-11-10 12:10:01,926 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 354 transitions, 2903 flow [2023-11-10 12:10:01,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:01,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:10:01,927 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:10:01,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-10 12:10:01,927 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:10:01,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:10:01,928 INFO L85 PathProgramCache]: Analyzing trace with hash -2027440083, now seen corresponding path program 2 times [2023-11-10 12:10:01,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:10:01,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976293489] [2023-11-10 12:10:01,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:10:01,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:10:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:10:02,265 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-10 12:10:02,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:10:02,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976293489] [2023-11-10 12:10:02,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976293489] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:10:02,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:10:02,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 12:10:02,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024767332] [2023-11-10 12:10:02,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:10:02,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 12:10:02,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:10:02,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 12:10:02,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-10 12:10:02,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 214 [2023-11-10 12:10:02,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 354 transitions, 2903 flow. Second operand has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:02,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:10:02,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 214 [2023-11-10 12:10:02,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:10:04,792 INFO L124 PetriNetUnfolderBase]: 1692/12983 cut-off events. [2023-11-10 12:10:04,792 INFO L125 PetriNetUnfolderBase]: For 29624/30187 co-relation queries the response was YES. [2023-11-10 12:10:04,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27079 conditions, 12983 events. 1692/12983 cut-off events. For 29624/30187 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 171287 event pairs, 156 based on Foata normal form. 169/12220 useless extension candidates. Maximal degree in co-relation 26757. Up to 1047 conditions per place. [2023-11-10 12:10:04,874 INFO L140 encePairwiseOnDemand]: 201/214 looper letters, 78 selfloop transitions, 59 changer transitions 2/413 dead transitions. [2023-11-10 12:10:04,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 413 transitions, 3635 flow [2023-11-10 12:10:04,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-10 12:10:04,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-10 12:10:04,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1337 transitions. [2023-11-10 12:10:04,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8925233644859814 [2023-11-10 12:10:04,876 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1337 transitions. [2023-11-10 12:10:04,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1337 transitions. [2023-11-10 12:10:04,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:10:04,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1337 transitions. [2023-11-10 12:10:04,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:04,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 214.0) internal successors, (1712), 8 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:04,880 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 214.0) internal successors, (1712), 8 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:04,880 INFO L175 Difference]: Start difference. First operand has 329 places, 354 transitions, 2903 flow. Second operand 7 states and 1337 transitions. [2023-11-10 12:10:04,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 413 transitions, 3635 flow [2023-11-10 12:10:04,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 413 transitions, 3602 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-10 12:10:04,949 INFO L231 Difference]: Finished difference. Result has 333 places, 375 transitions, 3400 flow [2023-11-10 12:10:04,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=2879, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3400, PETRI_PLACES=333, PETRI_TRANSITIONS=375} [2023-11-10 12:10:04,950 INFO L281 CegarLoopForPetriNet]: 191 programPoint places, 142 predicate places. [2023-11-10 12:10:04,950 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 375 transitions, 3400 flow [2023-11-10 12:10:04,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:04,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:10:04,951 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:10:04,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-10 12:10:04,951 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:10:04,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:10:04,951 INFO L85 PathProgramCache]: Analyzing trace with hash 245386605, now seen corresponding path program 3 times [2023-11-10 12:10:04,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:10:04,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264264350] [2023-11-10 12:10:04,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:10:04,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:10:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:10:05,065 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-10 12:10:05,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:10:05,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264264350] [2023-11-10 12:10:05,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264264350] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:10:05,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:10:05,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 12:10:05,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595544676] [2023-11-10 12:10:05,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:10:05,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 12:10:05,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:10:05,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 12:10:05,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-10 12:10:05,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 214 [2023-11-10 12:10:05,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 375 transitions, 3400 flow. Second operand has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:05,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:10:05,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 214 [2023-11-10 12:10:05,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:10:07,237 INFO L124 PetriNetUnfolderBase]: 1595/11792 cut-off events. [2023-11-10 12:10:07,238 INFO L125 PetriNetUnfolderBase]: For 31956/32595 co-relation queries the response was YES. [2023-11-10 12:10:07,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25950 conditions, 11792 events. 1595/11792 cut-off events. For 31956/32595 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 152262 event pairs, 212 based on Foata normal form. 148/11087 useless extension candidates. Maximal degree in co-relation 25626. Up to 1048 conditions per place. [2023-11-10 12:10:07,316 INFO L140 encePairwiseOnDemand]: 205/214 looper letters, 74 selfloop transitions, 49 changer transitions 5/402 dead transitions. [2023-11-10 12:10:07,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 402 transitions, 3789 flow [2023-11-10 12:10:07,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-10 12:10:07,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-10 12:10:07,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1140 transitions. [2023-11-10 12:10:07,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8878504672897196 [2023-11-10 12:10:07,318 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1140 transitions. [2023-11-10 12:10:07,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1140 transitions. [2023-11-10 12:10:07,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:10:07,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1140 transitions. [2023-11-10 12:10:07,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:07,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 214.0) internal successors, (1498), 7 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:07,321 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 214.0) internal successors, (1498), 7 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:07,321 INFO L175 Difference]: Start difference. First operand has 333 places, 375 transitions, 3400 flow. Second operand 6 states and 1140 transitions. [2023-11-10 12:10:07,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 402 transitions, 3789 flow [2023-11-10 12:10:07,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 402 transitions, 3740 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-11-10 12:10:07,386 INFO L231 Difference]: Finished difference. Result has 338 places, 375 transitions, 3490 flow [2023-11-10 12:10:07,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=3351, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3490, PETRI_PLACES=338, PETRI_TRANSITIONS=375} [2023-11-10 12:10:07,387 INFO L281 CegarLoopForPetriNet]: 191 programPoint places, 147 predicate places. [2023-11-10 12:10:07,387 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 375 transitions, 3490 flow [2023-11-10 12:10:07,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:07,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:10:07,388 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:10:07,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-10 12:10:07,388 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:10:07,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:10:07,388 INFO L85 PathProgramCache]: Analyzing trace with hash 172371747, now seen corresponding path program 1 times [2023-11-10 12:10:07,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:10:07,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091184594] [2023-11-10 12:10:07,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:10:07,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:10:07,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:10:07,496 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-10 12:10:07,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:10:07,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091184594] [2023-11-10 12:10:07,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091184594] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:10:07,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:10:07,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 12:10:07,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016110706] [2023-11-10 12:10:07,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:10:07,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 12:10:07,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:10:07,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 12:10:07,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-10 12:10:07,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 214 [2023-11-10 12:10:07,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 375 transitions, 3490 flow. Second operand has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:07,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:10:07,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 214 [2023-11-10 12:10:07,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:10:10,795 INFO L124 PetriNetUnfolderBase]: 2211/14114 cut-off events. [2023-11-10 12:10:10,796 INFO L125 PetriNetUnfolderBase]: For 42592/43378 co-relation queries the response was YES. [2023-11-10 12:10:10,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30850 conditions, 14114 events. 2211/14114 cut-off events. For 42592/43378 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 189747 event pairs, 194 based on Foata normal form. 172/13149 useless extension candidates. Maximal degree in co-relation 30524. Up to 1467 conditions per place. [2023-11-10 12:10:10,979 INFO L140 encePairwiseOnDemand]: 203/214 looper letters, 97 selfloop transitions, 65 changer transitions 7/439 dead transitions. [2023-11-10 12:10:10,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 439 transitions, 4232 flow [2023-11-10 12:10:10,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-10 12:10:10,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-10 12:10:10,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1715 transitions. [2023-11-10 12:10:10,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8904465212876428 [2023-11-10 12:10:10,981 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1715 transitions. [2023-11-10 12:10:10,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1715 transitions. [2023-11-10 12:10:10,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:10:10,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1715 transitions. [2023-11-10 12:10:10,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 190.55555555555554) internal successors, (1715), 9 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:10,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 214.0) internal successors, (2140), 10 states have internal predecessors, (2140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:10,990 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 214.0) internal successors, (2140), 10 states have internal predecessors, (2140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:10,990 INFO L175 Difference]: Start difference. First operand has 338 places, 375 transitions, 3490 flow. Second operand 9 states and 1715 transitions. [2023-11-10 12:10:10,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 439 transitions, 4232 flow [2023-11-10 12:10:11,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 439 transitions, 4156 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-11-10 12:10:11,123 INFO L231 Difference]: Finished difference. Result has 344 places, 386 transitions, 3787 flow [2023-11-10 12:10:11,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=3414, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3787, PETRI_PLACES=344, PETRI_TRANSITIONS=386} [2023-11-10 12:10:11,124 INFO L281 CegarLoopForPetriNet]: 191 programPoint places, 153 predicate places. [2023-11-10 12:10:11,124 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 386 transitions, 3787 flow [2023-11-10 12:10:11,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:11,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:10:11,125 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:10:11,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-10 12:10:11,125 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:10:11,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:10:11,125 INFO L85 PathProgramCache]: Analyzing trace with hash 794706547, now seen corresponding path program 2 times [2023-11-10 12:10:11,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:10:11,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161577250] [2023-11-10 12:10:11,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:10:11,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:10:11,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:10:11,292 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-10 12:10:11,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:10:11,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161577250] [2023-11-10 12:10:11,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161577250] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:10:11,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:10:11,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 12:10:11,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754985230] [2023-11-10 12:10:11,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:10:11,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 12:10:11,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:10:11,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 12:10:11,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-10 12:10:11,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 214 [2023-11-10 12:10:11,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 386 transitions, 3787 flow. Second operand has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:11,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:10:11,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 214 [2023-11-10 12:10:11,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:10:14,837 INFO L124 PetriNetUnfolderBase]: 2172/13885 cut-off events. [2023-11-10 12:10:14,838 INFO L125 PetriNetUnfolderBase]: For 46487/47364 co-relation queries the response was YES. [2023-11-10 12:10:14,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31110 conditions, 13885 events. 2172/13885 cut-off events. For 46487/47364 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 185431 event pairs, 763 based on Foata normal form. 112/12801 useless extension candidates. Maximal degree in co-relation 30782. Up to 1742 conditions per place. [2023-11-10 12:10:14,965 INFO L140 encePairwiseOnDemand]: 205/214 looper letters, 111 selfloop transitions, 37 changer transitions 8/426 dead transitions. [2023-11-10 12:10:14,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 426 transitions, 4417 flow [2023-11-10 12:10:14,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-10 12:10:14,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-10 12:10:14,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1869 transitions. [2023-11-10 12:10:14,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8733644859813084 [2023-11-10 12:10:14,967 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1869 transitions. [2023-11-10 12:10:14,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1869 transitions. [2023-11-10 12:10:14,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:10:14,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1869 transitions. [2023-11-10 12:10:14,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 186.9) internal successors, (1869), 10 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:14,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 214.0) internal successors, (2354), 11 states have internal predecessors, (2354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:14,973 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 214.0) internal successors, (2354), 11 states have internal predecessors, (2354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:14,973 INFO L175 Difference]: Start difference. First operand has 344 places, 386 transitions, 3787 flow. Second operand 10 states and 1869 transitions. [2023-11-10 12:10:14,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 426 transitions, 4417 flow [2023-11-10 12:10:15,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 426 transitions, 4358 flow, removed 24 selfloop flow, removed 2 redundant places. [2023-11-10 12:10:15,103 INFO L231 Difference]: Finished difference. Result has 355 places, 387 transitions, 3878 flow [2023-11-10 12:10:15,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=3738, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3878, PETRI_PLACES=355, PETRI_TRANSITIONS=387} [2023-11-10 12:10:15,103 INFO L281 CegarLoopForPetriNet]: 191 programPoint places, 164 predicate places. [2023-11-10 12:10:15,104 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 387 transitions, 3878 flow [2023-11-10 12:10:15,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:15,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:10:15,104 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:10:15,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-10 12:10:15,104 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:10:15,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:10:15,105 INFO L85 PathProgramCache]: Analyzing trace with hash -844921977, now seen corresponding path program 3 times [2023-11-10 12:10:15,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:10:15,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980906013] [2023-11-10 12:10:15,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:10:15,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:10:15,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:10:15,243 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-10 12:10:15,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:10:15,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980906013] [2023-11-10 12:10:15,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980906013] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:10:15,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:10:15,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 12:10:15,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136108403] [2023-11-10 12:10:15,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:10:15,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 12:10:15,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:10:15,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 12:10:15,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-10 12:10:15,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 214 [2023-11-10 12:10:15,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 387 transitions, 3878 flow. Second operand has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:15,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:10:15,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 214 [2023-11-10 12:10:15,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:10:18,678 INFO L124 PetriNetUnfolderBase]: 2192/14072 cut-off events. [2023-11-10 12:10:18,678 INFO L125 PetriNetUnfolderBase]: For 48920/49830 co-relation queries the response was YES. [2023-11-10 12:10:18,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31643 conditions, 14072 events. 2192/14072 cut-off events. For 48920/49830 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 189080 event pairs, 247 based on Foata normal form. 164/13091 useless extension candidates. Maximal degree in co-relation 31310. Up to 1467 conditions per place. [2023-11-10 12:10:18,819 INFO L140 encePairwiseOnDemand]: 205/214 looper letters, 93 selfloop transitions, 55 changer transitions 6/424 dead transitions. [2023-11-10 12:10:18,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 424 transitions, 4372 flow [2023-11-10 12:10:18,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-10 12:10:18,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-10 12:10:18,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1514 transitions. [2023-11-10 12:10:18,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8843457943925234 [2023-11-10 12:10:18,821 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1514 transitions. [2023-11-10 12:10:18,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1514 transitions. [2023-11-10 12:10:18,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:10:18,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1514 transitions. [2023-11-10 12:10:18,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 189.25) internal successors, (1514), 8 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:18,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 214.0) internal successors, (1926), 9 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:18,825 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 214.0) internal successors, (1926), 9 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:18,825 INFO L175 Difference]: Start difference. First operand has 355 places, 387 transitions, 3878 flow. Second operand 8 states and 1514 transitions. [2023-11-10 12:10:18,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 424 transitions, 4372 flow [2023-11-10 12:10:18,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 424 transitions, 4316 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-11-10 12:10:18,946 INFO L231 Difference]: Finished difference. Result has 355 places, 386 transitions, 3920 flow [2023-11-10 12:10:18,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=3828, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3920, PETRI_PLACES=355, PETRI_TRANSITIONS=386} [2023-11-10 12:10:18,947 INFO L281 CegarLoopForPetriNet]: 191 programPoint places, 164 predicate places. [2023-11-10 12:10:18,947 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 386 transitions, 3920 flow [2023-11-10 12:10:18,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:18,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:10:18,948 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:10:18,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-10 12:10:18,948 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:10:18,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:10:18,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1099150935, now seen corresponding path program 4 times [2023-11-10 12:10:18,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:10:18,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927258332] [2023-11-10 12:10:18,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:10:18,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:10:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:10:19,114 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-10 12:10:19,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:10:19,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927258332] [2023-11-10 12:10:19,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927258332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:10:19,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:10:19,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 12:10:19,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308896271] [2023-11-10 12:10:19,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:10:19,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 12:10:19,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:10:19,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 12:10:19,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-10 12:10:19,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 214 [2023-11-10 12:10:19,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 386 transitions, 3920 flow. Second operand has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:19,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:10:19,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 214 [2023-11-10 12:10:19,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:10:21,721 INFO L124 PetriNetUnfolderBase]: 1536/11290 cut-off events. [2023-11-10 12:10:21,721 INFO L125 PetriNetUnfolderBase]: For 39743/40395 co-relation queries the response was YES. [2023-11-10 12:10:21,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26476 conditions, 11290 events. 1536/11290 cut-off events. For 39743/40395 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 143535 event pairs, 151 based on Foata normal form. 147/10626 useless extension candidates. Maximal degree in co-relation 26145. Up to 1627 conditions per place. [2023-11-10 12:10:21,823 INFO L140 encePairwiseOnDemand]: 205/214 looper letters, 89 selfloop transitions, 43 changer transitions 4/421 dead transitions. [2023-11-10 12:10:21,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 421 transitions, 4456 flow [2023-11-10 12:10:21,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-10 12:10:21,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-10 12:10:21,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1136 transitions. [2023-11-10 12:10:21,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8847352024922118 [2023-11-10 12:10:21,825 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1136 transitions. [2023-11-10 12:10:21,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1136 transitions. [2023-11-10 12:10:21,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:10:21,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1136 transitions. [2023-11-10 12:10:21,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 189.33333333333334) internal successors, (1136), 6 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:21,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 214.0) internal successors, (1498), 7 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:21,829 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 214.0) internal successors, (1498), 7 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:21,829 INFO L175 Difference]: Start difference. First operand has 355 places, 386 transitions, 3920 flow. Second operand 6 states and 1136 transitions. [2023-11-10 12:10:21,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 421 transitions, 4456 flow [2023-11-10 12:10:21,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 421 transitions, 4308 flow, removed 4 selfloop flow, removed 8 redundant places. [2023-11-10 12:10:21,946 INFO L231 Difference]: Finished difference. Result has 353 places, 390 transitions, 3976 flow [2023-11-10 12:10:21,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=3772, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3976, PETRI_PLACES=353, PETRI_TRANSITIONS=390} [2023-11-10 12:10:21,947 INFO L281 CegarLoopForPetriNet]: 191 programPoint places, 162 predicate places. [2023-11-10 12:10:21,947 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 390 transitions, 3976 flow [2023-11-10 12:10:21,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:21,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:10:21,948 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:10:21,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-10 12:10:21,948 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:10:21,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:10:21,949 INFO L85 PathProgramCache]: Analyzing trace with hash -363467089, now seen corresponding path program 5 times [2023-11-10 12:10:21,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:10:21,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489419807] [2023-11-10 12:10:21,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:10:21,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:10:21,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:10:22,141 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-10 12:10:22,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:10:22,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489419807] [2023-11-10 12:10:22,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489419807] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:10:22,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:10:22,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 12:10:22,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848424106] [2023-11-10 12:10:22,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:10:22,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 12:10:22,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:10:22,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 12:10:22,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-10 12:10:22,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 214 [2023-11-10 12:10:22,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 390 transitions, 3976 flow. Second operand has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:22,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:10:22,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 214 [2023-11-10 12:10:22,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:10:24,657 INFO L124 PetriNetUnfolderBase]: 1597/11994 cut-off events. [2023-11-10 12:10:24,657 INFO L125 PetriNetUnfolderBase]: For 40082/40708 co-relation queries the response was YES. [2023-11-10 12:10:24,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27714 conditions, 11994 events. 1597/11994 cut-off events. For 40082/40708 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 154647 event pairs, 124 based on Foata normal form. 166/11296 useless extension candidates. Maximal degree in co-relation 27383. Up to 1627 conditions per place. [2023-11-10 12:10:24,763 INFO L140 encePairwiseOnDemand]: 203/214 looper letters, 82 selfloop transitions, 57 changer transitions 2/426 dead transitions. [2023-11-10 12:10:24,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 426 transitions, 4419 flow [2023-11-10 12:10:24,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-10 12:10:24,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-10 12:10:24,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1332 transitions. [2023-11-10 12:10:24,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8891855807743658 [2023-11-10 12:10:24,767 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1332 transitions. [2023-11-10 12:10:24,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1332 transitions. [2023-11-10 12:10:24,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:10:24,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1332 transitions. [2023-11-10 12:10:24,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 190.28571428571428) internal successors, (1332), 7 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:24,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 214.0) internal successors, (1712), 8 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:24,770 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 214.0) internal successors, (1712), 8 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:24,770 INFO L175 Difference]: Start difference. First operand has 353 places, 390 transitions, 3976 flow. Second operand 7 states and 1332 transitions. [2023-11-10 12:10:24,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 426 transitions, 4419 flow [2023-11-10 12:10:24,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 426 transitions, 4365 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-11-10 12:10:24,861 INFO L231 Difference]: Finished difference. Result has 358 places, 393 transitions, 4133 flow [2023-11-10 12:10:24,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=3910, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4133, PETRI_PLACES=358, PETRI_TRANSITIONS=393} [2023-11-10 12:10:24,863 INFO L281 CegarLoopForPetriNet]: 191 programPoint places, 167 predicate places. [2023-11-10 12:10:24,863 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 393 transitions, 4133 flow [2023-11-10 12:10:24,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:24,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:10:24,864 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:10:24,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-10 12:10:24,864 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:10:24,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:10:24,864 INFO L85 PathProgramCache]: Analyzing trace with hash -964182179, now seen corresponding path program 6 times [2023-11-10 12:10:24,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:10:24,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844889976] [2023-11-10 12:10:24,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:10:24,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:10:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:10:25,112 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-10 12:10:25,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:10:25,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844889976] [2023-11-10 12:10:25,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844889976] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:10:25,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:10:25,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 12:10:25,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880321667] [2023-11-10 12:10:25,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:10:25,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 12:10:25,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:10:25,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 12:10:25,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-10 12:10:25,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 214 [2023-11-10 12:10:25,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 393 transitions, 4133 flow. Second operand has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:25,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:10:25,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 214 [2023-11-10 12:10:25,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:10:27,285 INFO L124 PetriNetUnfolderBase]: 1633/12613 cut-off events. [2023-11-10 12:10:27,285 INFO L125 PetriNetUnfolderBase]: For 44430/45075 co-relation queries the response was YES. [2023-11-10 12:10:27,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29324 conditions, 12613 events. 1633/12613 cut-off events. For 44430/45075 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 164226 event pairs, 19 based on Foata normal form. 195/11921 useless extension candidates. Maximal degree in co-relation 28991. Up to 1367 conditions per place. [2023-11-10 12:10:27,378 INFO L140 encePairwiseOnDemand]: 203/214 looper letters, 84 selfloop transitions, 61 changer transitions 3/433 dead transitions. [2023-11-10 12:10:27,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 433 transitions, 4676 flow [2023-11-10 12:10:27,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-10 12:10:27,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-10 12:10:27,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1330 transitions. [2023-11-10 12:10:27,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8878504672897196 [2023-11-10 12:10:27,380 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1330 transitions. [2023-11-10 12:10:27,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1330 transitions. [2023-11-10 12:10:27,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:10:27,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1330 transitions. [2023-11-10 12:10:27,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:27,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 214.0) internal successors, (1712), 8 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:27,383 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 214.0) internal successors, (1712), 8 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:27,383 INFO L175 Difference]: Start difference. First operand has 358 places, 393 transitions, 4133 flow. Second operand 7 states and 1330 transitions. [2023-11-10 12:10:27,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 433 transitions, 4676 flow [2023-11-10 12:10:27,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 433 transitions, 4599 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-11-10 12:10:27,490 INFO L231 Difference]: Finished difference. Result has 363 places, 397 transitions, 4300 flow [2023-11-10 12:10:27,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=4050, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4300, PETRI_PLACES=363, PETRI_TRANSITIONS=397} [2023-11-10 12:10:27,490 INFO L281 CegarLoopForPetriNet]: 191 programPoint places, 172 predicate places. [2023-11-10 12:10:27,491 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 397 transitions, 4300 flow [2023-11-10 12:10:27,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:27,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:10:27,491 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:10:27,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-10 12:10:27,491 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:10:27,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:10:27,491 INFO L85 PathProgramCache]: Analyzing trace with hash 409786800, now seen corresponding path program 1 times [2023-11-10 12:10:27,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:10:27,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764110126] [2023-11-10 12:10:27,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:10:27,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:10:27,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:10:28,337 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-10 12:10:28,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:10:28,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764110126] [2023-11-10 12:10:28,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764110126] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:10:28,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:10:28,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-11-10 12:10:28,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225548192] [2023-11-10 12:10:28,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:10:28,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-10 12:10:28,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:10:28,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-10 12:10:28,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2023-11-10 12:10:28,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 214 [2023-11-10 12:10:28,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 397 transitions, 4300 flow. Second operand has 19 states, 19 states have (on average 142.57894736842104) internal successors, (2709), 19 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:10:28,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:10:28,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 214 [2023-11-10 12:10:28,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:11:00,726 INFO L124 PetriNetUnfolderBase]: 55262/131137 cut-off events. [2023-11-10 12:11:00,726 INFO L125 PetriNetUnfolderBase]: For 385976/387078 co-relation queries the response was YES. [2023-11-10 12:11:02,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326393 conditions, 131137 events. 55262/131137 cut-off events. For 385976/387078 co-relation queries the response was YES. Maximal size of possible extension queue 5064. Compared 1793946 event pairs, 21385 based on Foata normal form. 276/120809 useless extension candidates. Maximal degree in co-relation 326029. Up to 27956 conditions per place. [2023-11-10 12:11:02,506 INFO L140 encePairwiseOnDemand]: 185/214 looper letters, 338 selfloop transitions, 164 changer transitions 0/729 dead transitions. [2023-11-10 12:11:02,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 729 transitions, 8449 flow [2023-11-10 12:11:02,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-10 12:11:02,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-10 12:11:02,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3909 transitions. [2023-11-10 12:11:02,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7025521207764198 [2023-11-10 12:11:02,510 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3909 transitions. [2023-11-10 12:11:02,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3909 transitions. [2023-11-10 12:11:02,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:11:02,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3909 transitions. [2023-11-10 12:11:02,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 150.34615384615384) internal successors, (3909), 26 states have internal predecessors, (3909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:11:02,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 214.0) internal successors, (5778), 27 states have internal predecessors, (5778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:11:02,517 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 214.0) internal successors, (5778), 27 states have internal predecessors, (5778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:11:02,517 INFO L175 Difference]: Start difference. First operand has 363 places, 397 transitions, 4300 flow. Second operand 26 states and 3909 transitions. [2023-11-10 12:11:02,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 729 transitions, 8449 flow [2023-11-10 12:11:03,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 729 transitions, 8362 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-11-10 12:11:03,411 INFO L231 Difference]: Finished difference. Result has 394 places, 508 transitions, 6545 flow [2023-11-10 12:11:03,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=4221, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=6545, PETRI_PLACES=394, PETRI_TRANSITIONS=508} [2023-11-10 12:11:03,411 INFO L281 CegarLoopForPetriNet]: 191 programPoint places, 203 predicate places. [2023-11-10 12:11:03,411 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 508 transitions, 6545 flow [2023-11-10 12:11:03,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 142.57894736842104) internal successors, (2709), 19 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:11:03,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:11:03,412 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:11:03,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-10 12:11:03,412 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:11:03,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:11:03,413 INFO L85 PathProgramCache]: Analyzing trace with hash 451410676, now seen corresponding path program 2 times [2023-11-10 12:11:03,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:11:03,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541965376] [2023-11-10 12:11:03,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:11:03,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:11:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:11:04,029 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-10 12:11:04,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:11:04,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541965376] [2023-11-10 12:11:04,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541965376] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:11:04,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:11:04,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-11-10 12:11:04,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373631860] [2023-11-10 12:11:04,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:11:04,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-10 12:11:04,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:11:04,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-10 12:11:04,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2023-11-10 12:11:04,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 214 [2023-11-10 12:11:04,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 508 transitions, 6545 flow. Second operand has 19 states, 19 states have (on average 142.57894736842104) internal successors, (2709), 19 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:11:04,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:11:04,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 214 [2023-11-10 12:11:04,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand