/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 15:36:19,688 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 15:36:19,749 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-12-09 15:36:19,779 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 15:36:19,780 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 15:36:19,780 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 15:36:19,781 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 15:36:19,781 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 15:36:19,781 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 15:36:19,784 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 15:36:19,785 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 15:36:19,785 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 15:36:19,785 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 15:36:19,786 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 15:36:19,786 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 15:36:19,786 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 15:36:19,787 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 15:36:19,787 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 15:36:19,787 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 15:36:19,787 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 15:36:19,787 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 15:36:19,788 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 15:36:19,788 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 15:36:19,788 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 15:36:19,788 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 15:36:19,789 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:36:19,790 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 15:36:19,790 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 15:36:19,790 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 15:36:19,790 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 15:36:19,791 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 15:36:19,791 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 15:36:19,791 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 15:36:19,791 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 15:36:20,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 15:36:20,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 15:36:20,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 15:36:20,036 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 15:36:20,038 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 15:36:20,039 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c [2023-12-09 15:36:21,073 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 15:36:21,288 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 15:36:21,289 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c [2023-12-09 15:36:21,296 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e0f82d4d/cf55075f77f745c999f7f0b3fce2be3e/FLAG6a91987cc [2023-12-09 15:36:21,310 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e0f82d4d/cf55075f77f745c999f7f0b3fce2be3e [2023-12-09 15:36:21,313 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 15:36:21,314 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 15:36:21,321 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 15:36:21,321 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 15:36:21,324 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 15:36:21,325 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:36:21" (1/1) ... [2023-12-09 15:36:21,326 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45556a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:36:21, skipping insertion in model container [2023-12-09 15:36:21,340 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:36:21" (1/1) ... [2023-12-09 15:36:21,364 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 15:36:21,464 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/test-easy11.wvr.c[2031,2044] [2023-12-09 15:36:21,467 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:36:21,473 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 15:36:21,486 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/test-easy11.wvr.c[2031,2044] [2023-12-09 15:36:21,486 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:36:21,491 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:36:21,491 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:36:21,496 INFO L206 MainTranslator]: Completed translation [2023-12-09 15:36:21,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:36:21 WrapperNode [2023-12-09 15:36:21,496 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 15:36:21,497 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 15:36:21,497 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 15:36:21,497 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 15:36:21,502 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:36:21" (1/1) ... [2023-12-09 15:36:21,507 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:36:21" (1/1) ... [2023-12-09 15:36:21,518 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2023-12-09 15:36:21,518 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 15:36:21,519 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 15:36:21,519 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 15:36:21,519 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 15:36:21,525 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:36:21" (1/1) ... [2023-12-09 15:36:21,525 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:36:21" (1/1) ... [2023-12-09 15:36:21,527 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:36:21" (1/1) ... [2023-12-09 15:36:21,527 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:36:21" (1/1) ... [2023-12-09 15:36:21,529 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:36:21" (1/1) ... [2023-12-09 15:36:21,531 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:36:21" (1/1) ... [2023-12-09 15:36:21,532 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:36:21" (1/1) ... [2023-12-09 15:36:21,533 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:36:21" (1/1) ... [2023-12-09 15:36:21,534 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 15:36:21,534 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 15:36:21,534 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 15:36:21,535 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 15:36:21,535 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:36:21" (1/1) ... [2023-12-09 15:36:21,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:36:21,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:36:21,563 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-09 15:36:21,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-09 15:36:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 15:36:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-09 15:36:21,613 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-09 15:36:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-09 15:36:21,614 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-09 15:36:21,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 15:36:21,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 15:36:21,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 15:36:21,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-09 15:36:21,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-09 15:36:21,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 15:36:21,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 15:36:21,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 15:36:21,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 15:36:21,615 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-09 15:36:21,708 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 15:36:21,711 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 15:36:21,844 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 15:36:21,851 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 15:36:21,851 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-09 15:36:21,852 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:36:21 BoogieIcfgContainer [2023-12-09 15:36:21,852 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 15:36:21,853 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 15:36:21,854 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 15:36:21,855 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 15:36:21,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:36:21" (1/3) ... [2023-12-09 15:36:21,856 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a62ab8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:36:21, skipping insertion in model container [2023-12-09 15:36:21,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:36:21" (2/3) ... [2023-12-09 15:36:21,856 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a62ab8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:36:21, skipping insertion in model container [2023-12-09 15:36:21,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:36:21" (3/3) ... [2023-12-09 15:36:21,857 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2023-12-09 15:36:21,868 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 15:36:21,868 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 15:36:21,868 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 15:36:21,903 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-09 15:36:21,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 86 transitions, 186 flow [2023-12-09 15:36:21,956 INFO L124 PetriNetUnfolderBase]: 6/84 cut-off events. [2023-12-09 15:36:21,956 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:36:21,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 84 events. 6/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 56 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2023-12-09 15:36:21,960 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 86 transitions, 186 flow [2023-12-09 15:36:21,962 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 75 transitions, 162 flow [2023-12-09 15:36:21,969 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:36:21,973 INFO L362 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7994b35f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:36:21,973 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-09 15:36:21,989 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:36:21,989 INFO L124 PetriNetUnfolderBase]: 6/74 cut-off events. [2023-12-09 15:36:21,989 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:36:21,989 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:21,990 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:21,990 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:21,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:21,994 INFO L85 PathProgramCache]: Analyzing trace with hash -953594484, now seen corresponding path program 1 times [2023-12-09 15:36:22,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:22,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448590866] [2023-12-09 15:36:22,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:22,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:22,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:22,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:22,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:22,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448590866] [2023-12-09 15:36:22,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448590866] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:22,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:36:22,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-09 15:36:22,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202613432] [2023-12-09 15:36:22,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:22,781 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-09 15:36:22,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:22,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-09 15:36:22,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-12-09 15:36:22,810 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2023-12-09 15:36:22,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 75 transitions, 162 flow. Second operand has 15 states, 15 states have (on average 47.8) internal successors, (717), 15 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:22,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:22,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2023-12-09 15:36:22,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:23,215 INFO L124 PetriNetUnfolderBase]: 91/300 cut-off events. [2023-12-09 15:36:23,216 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-12-09 15:36:23,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 544 conditions, 300 events. 91/300 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1249 event pairs, 29 based on Foata normal form. 3/266 useless extension candidates. Maximal degree in co-relation 415. Up to 62 conditions per place. [2023-12-09 15:36:23,221 INFO L140 encePairwiseOnDemand]: 64/86 looper letters, 59 selfloop transitions, 16 changer transitions 10/121 dead transitions. [2023-12-09 15:36:23,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 121 transitions, 433 flow [2023-12-09 15:36:23,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-09 15:36:23,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-12-09 15:36:23,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 834 transitions. [2023-12-09 15:36:23,237 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6061046511627907 [2023-12-09 15:36:23,237 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 834 transitions. [2023-12-09 15:36:23,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 834 transitions. [2023-12-09 15:36:23,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:23,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 834 transitions. [2023-12-09 15:36:23,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 52.125) internal successors, (834), 16 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:23,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:23,251 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:23,253 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 15 predicate places. [2023-12-09 15:36:23,254 INFO L500 AbstractCegarLoop]: Abstraction has has 91 places, 121 transitions, 433 flow [2023-12-09 15:36:23,254 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 47.8) internal successors, (717), 15 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:23,254 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:23,254 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:23,255 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 15:36:23,255 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:23,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:23,255 INFO L85 PathProgramCache]: Analyzing trace with hash -637867570, now seen corresponding path program 2 times [2023-12-09 15:36:23,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:23,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402920550] [2023-12-09 15:36:23,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:23,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:23,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:23,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:23,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:23,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402920550] [2023-12-09 15:36:23,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402920550] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:23,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:36:23,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-09 15:36:23,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705725867] [2023-12-09 15:36:23,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:23,525 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-09 15:36:23,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:23,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-09 15:36:23,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-09 15:36:23,527 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2023-12-09 15:36:23,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 121 transitions, 433 flow. Second operand has 14 states, 14 states have (on average 47.92857142857143) internal successors, (671), 14 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:23,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:23,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2023-12-09 15:36:23,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:23,772 INFO L124 PetriNetUnfolderBase]: 137/438 cut-off events. [2023-12-09 15:36:23,772 INFO L125 PetriNetUnfolderBase]: For 174/208 co-relation queries the response was YES. [2023-12-09 15:36:23,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1087 conditions, 438 events. 137/438 cut-off events. For 174/208 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2162 event pairs, 16 based on Foata normal form. 2/385 useless extension candidates. Maximal degree in co-relation 785. Up to 117 conditions per place. [2023-12-09 15:36:23,778 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 88 selfloop transitions, 31 changer transitions 19/174 dead transitions. [2023-12-09 15:36:23,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 174 transitions, 945 flow [2023-12-09 15:36:23,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-09 15:36:23,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-12-09 15:36:23,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 828 transitions. [2023-12-09 15:36:23,780 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6017441860465116 [2023-12-09 15:36:23,780 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 828 transitions. [2023-12-09 15:36:23,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 828 transitions. [2023-12-09 15:36:23,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:23,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 828 transitions. [2023-12-09 15:36:23,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 51.75) internal successors, (828), 16 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:23,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:23,785 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:23,785 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 30 predicate places. [2023-12-09 15:36:23,785 INFO L500 AbstractCegarLoop]: Abstraction has has 106 places, 174 transitions, 945 flow [2023-12-09 15:36:23,786 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 47.92857142857143) internal successors, (671), 14 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:23,786 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:23,786 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:23,786 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 15:36:23,787 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:23,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:23,787 INFO L85 PathProgramCache]: Analyzing trace with hash -293212212, now seen corresponding path program 3 times [2023-12-09 15:36:23,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:23,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209063969] [2023-12-09 15:36:23,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:23,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:24,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:24,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:24,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209063969] [2023-12-09 15:36:24,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209063969] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:24,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:36:24,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-09 15:36:24,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26233158] [2023-12-09 15:36:24,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:24,046 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-09 15:36:24,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:24,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-09 15:36:24,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-12-09 15:36:24,047 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2023-12-09 15:36:24,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 174 transitions, 945 flow. Second operand has 14 states, 14 states have (on average 47.92857142857143) internal successors, (671), 14 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:24,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:24,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2023-12-09 15:36:24,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:24,301 INFO L124 PetriNetUnfolderBase]: 148/497 cut-off events. [2023-12-09 15:36:24,302 INFO L125 PetriNetUnfolderBase]: For 385/455 co-relation queries the response was YES. [2023-12-09 15:36:24,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1549 conditions, 497 events. 148/497 cut-off events. For 385/455 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2696 event pairs, 15 based on Foata normal form. 14/454 useless extension candidates. Maximal degree in co-relation 1083. Up to 148 conditions per place. [2023-12-09 15:36:24,305 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 96 selfloop transitions, 35 changer transitions 28/195 dead transitions. [2023-12-09 15:36:24,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 195 transitions, 1401 flow [2023-12-09 15:36:24,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-09 15:36:24,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-12-09 15:36:24,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 826 transitions. [2023-12-09 15:36:24,307 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6002906976744186 [2023-12-09 15:36:24,307 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 826 transitions. [2023-12-09 15:36:24,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 826 transitions. [2023-12-09 15:36:24,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:24,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 826 transitions. [2023-12-09 15:36:24,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 51.625) internal successors, (826), 16 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:24,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:24,311 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:24,311 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 45 predicate places. [2023-12-09 15:36:24,311 INFO L500 AbstractCegarLoop]: Abstraction has has 121 places, 195 transitions, 1401 flow [2023-12-09 15:36:24,311 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 47.92857142857143) internal successors, (671), 14 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:24,312 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:24,312 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:24,312 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 15:36:24,312 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:24,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:24,312 INFO L85 PathProgramCache]: Analyzing trace with hash -2107972776, now seen corresponding path program 4 times [2023-12-09 15:36:24,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:24,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037009232] [2023-12-09 15:36:24,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:24,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:24,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:24,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:24,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037009232] [2023-12-09 15:36:24,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037009232] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:24,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:36:24,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-09 15:36:24,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751385564] [2023-12-09 15:36:24,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:24,499 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-09 15:36:24,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:24,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-09 15:36:24,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-09 15:36:24,500 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2023-12-09 15:36:24,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 195 transitions, 1401 flow. Second operand has 14 states, 14 states have (on average 47.92857142857143) internal successors, (671), 14 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:24,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:24,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2023-12-09 15:36:24,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:24,747 INFO L124 PetriNetUnfolderBase]: 147/507 cut-off events. [2023-12-09 15:36:24,747 INFO L125 PetriNetUnfolderBase]: For 647/734 co-relation queries the response was YES. [2023-12-09 15:36:24,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1917 conditions, 507 events. 147/507 cut-off events. For 647/734 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2803 event pairs, 12 based on Foata normal form. 20/471 useless extension candidates. Maximal degree in co-relation 1325. Up to 166 conditions per place. [2023-12-09 15:36:24,750 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 96 selfloop transitions, 33 changer transitions 37/202 dead transitions. [2023-12-09 15:36:24,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 202 transitions, 1798 flow [2023-12-09 15:36:24,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-09 15:36:24,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-12-09 15:36:24,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 821 transitions. [2023-12-09 15:36:24,752 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.596656976744186 [2023-12-09 15:36:24,752 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 821 transitions. [2023-12-09 15:36:24,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 821 transitions. [2023-12-09 15:36:24,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:24,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 821 transitions. [2023-12-09 15:36:24,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 51.3125) internal successors, (821), 16 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:24,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:24,756 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:24,756 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 60 predicate places. [2023-12-09 15:36:24,756 INFO L500 AbstractCegarLoop]: Abstraction has has 136 places, 202 transitions, 1798 flow [2023-12-09 15:36:24,757 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 47.92857142857143) internal successors, (671), 14 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:24,757 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:24,757 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:24,757 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 15:36:24,757 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:24,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:24,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1591978096, now seen corresponding path program 5 times [2023-12-09 15:36:24,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:24,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276251987] [2023-12-09 15:36:24,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:24,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:24,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:24,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:24,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276251987] [2023-12-09 15:36:24,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276251987] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:24,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:36:24,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-09 15:36:24,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526043549] [2023-12-09 15:36:24,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:24,970 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-09 15:36:24,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:24,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-09 15:36:24,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-09 15:36:24,972 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2023-12-09 15:36:24,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 202 transitions, 1798 flow. Second operand has 14 states, 14 states have (on average 47.92857142857143) internal successors, (671), 14 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:24,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:24,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2023-12-09 15:36:24,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:25,202 INFO L124 PetriNetUnfolderBase]: 146/510 cut-off events. [2023-12-09 15:36:25,202 INFO L125 PetriNetUnfolderBase]: For 930/1018 co-relation queries the response was YES. [2023-12-09 15:36:25,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2295 conditions, 510 events. 146/510 cut-off events. For 930/1018 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2895 event pairs, 13 based on Foata normal form. 10/463 useless extension candidates. Maximal degree in co-relation 1842. Up to 174 conditions per place. [2023-12-09 15:36:25,206 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 96 selfloop transitions, 31 changer transitions 46/209 dead transitions. [2023-12-09 15:36:25,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 209 transitions, 2220 flow [2023-12-09 15:36:25,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-09 15:36:25,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-12-09 15:36:25,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 820 transitions. [2023-12-09 15:36:25,208 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5959302325581395 [2023-12-09 15:36:25,208 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 820 transitions. [2023-12-09 15:36:25,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 820 transitions. [2023-12-09 15:36:25,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:25,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 820 transitions. [2023-12-09 15:36:25,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 51.25) internal successors, (820), 16 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:25,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:25,212 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:25,213 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 75 predicate places. [2023-12-09 15:36:25,213 INFO L500 AbstractCegarLoop]: Abstraction has has 151 places, 209 transitions, 2220 flow [2023-12-09 15:36:25,214 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 47.92857142857143) internal successors, (671), 14 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:25,214 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:25,214 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:25,214 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-09 15:36:25,214 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:25,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:25,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1906178888, now seen corresponding path program 6 times [2023-12-09 15:36:25,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:25,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590427363] [2023-12-09 15:36:25,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:25,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:25,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:25,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:25,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:25,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590427363] [2023-12-09 15:36:25,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590427363] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:25,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:36:25,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-09 15:36:25,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051239534] [2023-12-09 15:36:25,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:25,409 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-09 15:36:25,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:25,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-09 15:36:25,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-09 15:36:25,411 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2023-12-09 15:36:25,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 209 transitions, 2220 flow. Second operand has 14 states, 14 states have (on average 47.92857142857143) internal successors, (671), 14 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:25,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:25,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2023-12-09 15:36:25,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:25,718 INFO L124 PetriNetUnfolderBase]: 176/605 cut-off events. [2023-12-09 15:36:25,718 INFO L125 PetriNetUnfolderBase]: For 1567/1694 co-relation queries the response was YES. [2023-12-09 15:36:25,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3120 conditions, 605 events. 176/605 cut-off events. For 1567/1694 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3616 event pairs, 12 based on Foata normal form. 13/552 useless extension candidates. Maximal degree in co-relation 2150. Up to 204 conditions per place. [2023-12-09 15:36:25,722 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 111 selfloop transitions, 41 changer transitions 55/243 dead transitions. [2023-12-09 15:36:25,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 243 transitions, 3054 flow [2023-12-09 15:36:25,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-09 15:36:25,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-12-09 15:36:25,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 828 transitions. [2023-12-09 15:36:25,724 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6017441860465116 [2023-12-09 15:36:25,724 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 828 transitions. [2023-12-09 15:36:25,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 828 transitions. [2023-12-09 15:36:25,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:25,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 828 transitions. [2023-12-09 15:36:25,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 51.75) internal successors, (828), 16 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:25,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:25,728 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:25,731 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 90 predicate places. [2023-12-09 15:36:25,731 INFO L500 AbstractCegarLoop]: Abstraction has has 166 places, 243 transitions, 3054 flow [2023-12-09 15:36:25,731 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 47.92857142857143) internal successors, (671), 14 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:25,731 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:25,731 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:25,731 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-09 15:36:25,731 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:25,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:25,732 INFO L85 PathProgramCache]: Analyzing trace with hash 305743164, now seen corresponding path program 7 times [2023-12-09 15:36:25,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:25,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782045398] [2023-12-09 15:36:25,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:25,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:25,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:25,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:25,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:25,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782045398] [2023-12-09 15:36:25,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782045398] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:25,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:36:25,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-09 15:36:25,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260590383] [2023-12-09 15:36:25,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:25,925 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-09 15:36:25,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:25,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-09 15:36:25,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-09 15:36:25,926 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2023-12-09 15:36:25,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 243 transitions, 3054 flow. Second operand has 14 states, 14 states have (on average 47.92857142857143) internal successors, (671), 14 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:25,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:25,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2023-12-09 15:36:25,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:26,246 INFO L124 PetriNetUnfolderBase]: 176/616 cut-off events. [2023-12-09 15:36:26,246 INFO L125 PetriNetUnfolderBase]: For 2072/2227 co-relation queries the response was YES. [2023-12-09 15:36:26,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3604 conditions, 616 events. 176/616 cut-off events. For 2072/2227 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3741 event pairs, 12 based on Foata normal form. 8/558 useless extension candidates. Maximal degree in co-relation 2937. Up to 212 conditions per place. [2023-12-09 15:36:26,251 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 112 selfloop transitions, 41 changer transitions 63/252 dead transitions. [2023-12-09 15:36:26,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 252 transitions, 3618 flow [2023-12-09 15:36:26,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-09 15:36:26,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-12-09 15:36:26,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 823 transitions. [2023-12-09 15:36:26,260 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5981104651162791 [2023-12-09 15:36:26,260 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 823 transitions. [2023-12-09 15:36:26,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 823 transitions. [2023-12-09 15:36:26,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:26,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 823 transitions. [2023-12-09 15:36:26,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 51.4375) internal successors, (823), 16 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:26,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:26,266 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:26,267 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 105 predicate places. [2023-12-09 15:36:26,267 INFO L500 AbstractCegarLoop]: Abstraction has has 181 places, 252 transitions, 3618 flow [2023-12-09 15:36:26,267 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 47.92857142857143) internal successors, (671), 14 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:26,267 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:26,267 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:26,268 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-09 15:36:26,268 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:26,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:26,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1709758470, now seen corresponding path program 8 times [2023-12-09 15:36:26,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:26,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943082911] [2023-12-09 15:36:26,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:26,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:26,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:26,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:26,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943082911] [2023-12-09 15:36:26,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943082911] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:26,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:36:26,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-09 15:36:26,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462181116] [2023-12-09 15:36:26,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:26,440 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-09 15:36:26,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:26,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-09 15:36:26,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-09 15:36:26,441 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2023-12-09 15:36:26,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 252 transitions, 3618 flow. Second operand has 14 states, 14 states have (on average 47.92857142857143) internal successors, (671), 14 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:26,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:26,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2023-12-09 15:36:26,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:26,701 INFO L124 PetriNetUnfolderBase]: 176/638 cut-off events. [2023-12-09 15:36:26,701 INFO L125 PetriNetUnfolderBase]: For 2992/3254 co-relation queries the response was YES. [2023-12-09 15:36:26,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4118 conditions, 638 events. 176/638 cut-off events. For 2992/3254 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3977 event pairs, 15 based on Foata normal form. 10/581 useless extension candidates. Maximal degree in co-relation 2769. Up to 220 conditions per place. [2023-12-09 15:36:26,706 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 112 selfloop transitions, 40 changer transitions 72/260 dead transitions. [2023-12-09 15:36:26,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 260 transitions, 4203 flow [2023-12-09 15:36:26,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-09 15:36:26,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-12-09 15:36:26,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 823 transitions. [2023-12-09 15:36:26,709 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5981104651162791 [2023-12-09 15:36:26,709 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 823 transitions. [2023-12-09 15:36:26,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 823 transitions. [2023-12-09 15:36:26,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:26,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 823 transitions. [2023-12-09 15:36:26,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 51.4375) internal successors, (823), 16 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:26,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:26,714 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:26,718 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 120 predicate places. [2023-12-09 15:36:26,718 INFO L500 AbstractCegarLoop]: Abstraction has has 196 places, 260 transitions, 4203 flow [2023-12-09 15:36:26,719 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 47.92857142857143) internal successors, (671), 14 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:26,719 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:26,719 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:26,719 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-09 15:36:26,719 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:26,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:26,720 INFO L85 PathProgramCache]: Analyzing trace with hash 131321028, now seen corresponding path program 9 times [2023-12-09 15:36:26,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:26,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474708038] [2023-12-09 15:36:26,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:26,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:26,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:26,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:26,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474708038] [2023-12-09 15:36:26,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474708038] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:26,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:36:26,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-09 15:36:26,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183764014] [2023-12-09 15:36:26,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:26,898 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-09 15:36:26,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:26,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-09 15:36:26,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-09 15:36:26,900 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2023-12-09 15:36:26,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 260 transitions, 4203 flow. Second operand has 14 states, 14 states have (on average 47.92857142857143) internal successors, (671), 14 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:26,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:26,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2023-12-09 15:36:26,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:27,179 INFO L124 PetriNetUnfolderBase]: 175/645 cut-off events. [2023-12-09 15:36:27,180 INFO L125 PetriNetUnfolderBase]: For 3668/3907 co-relation queries the response was YES. [2023-12-09 15:36:27,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4607 conditions, 645 events. 175/645 cut-off events. For 3668/3907 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4090 event pairs, 12 based on Foata normal form. 11/590 useless extension candidates. Maximal degree in co-relation 3686. Up to 225 conditions per place. [2023-12-09 15:36:27,185 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 111 selfloop transitions, 38 changer transitions 82/267 dead transitions. [2023-12-09 15:36:27,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 267 transitions, 4800 flow [2023-12-09 15:36:27,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-09 15:36:27,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-12-09 15:36:27,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 824 transitions. [2023-12-09 15:36:27,187 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5988372093023255 [2023-12-09 15:36:27,187 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 824 transitions. [2023-12-09 15:36:27,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 824 transitions. [2023-12-09 15:36:27,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:27,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 824 transitions. [2023-12-09 15:36:27,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 51.5) internal successors, (824), 16 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:27,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:27,191 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:27,192 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 135 predicate places. [2023-12-09 15:36:27,192 INFO L500 AbstractCegarLoop]: Abstraction has has 211 places, 267 transitions, 4800 flow [2023-12-09 15:36:27,192 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 47.92857142857143) internal successors, (671), 14 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:27,192 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:27,193 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:27,193 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-09 15:36:27,193 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:27,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:27,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1549940518, now seen corresponding path program 10 times [2023-12-09 15:36:27,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:27,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845734939] [2023-12-09 15:36:27,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:27,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:27,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:27,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:27,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845734939] [2023-12-09 15:36:27,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845734939] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:27,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:36:27,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-09 15:36:27,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221159375] [2023-12-09 15:36:27,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:27,376 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-09 15:36:27,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:27,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-09 15:36:27,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-09 15:36:27,380 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2023-12-09 15:36:27,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 267 transitions, 4800 flow. Second operand has 14 states, 14 states have (on average 47.92857142857143) internal successors, (671), 14 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:27,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:27,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2023-12-09 15:36:27,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:27,709 INFO L124 PetriNetUnfolderBase]: 175/670 cut-off events. [2023-12-09 15:36:27,710 INFO L125 PetriNetUnfolderBase]: For 4620/4880 co-relation queries the response was YES. [2023-12-09 15:36:27,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5186 conditions, 670 events. 175/670 cut-off events. For 4620/4880 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4388 event pairs, 12 based on Foata normal form. 7/610 useless extension candidates. Maximal degree in co-relation 4123. Up to 236 conditions per place. [2023-12-09 15:36:27,716 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 114 selfloop transitions, 39 changer transitions 90/279 dead transitions. [2023-12-09 15:36:27,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 279 transitions, 5532 flow [2023-12-09 15:36:27,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-09 15:36:27,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-12-09 15:36:27,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 825 transitions. [2023-12-09 15:36:27,718 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5995639534883721 [2023-12-09 15:36:27,718 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 825 transitions. [2023-12-09 15:36:27,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 825 transitions. [2023-12-09 15:36:27,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:27,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 825 transitions. [2023-12-09 15:36:27,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 51.5625) internal successors, (825), 16 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:27,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:27,724 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:27,725 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 150 predicate places. [2023-12-09 15:36:27,725 INFO L500 AbstractCegarLoop]: Abstraction has has 226 places, 279 transitions, 5532 flow [2023-12-09 15:36:27,725 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 47.92857142857143) internal successors, (671), 14 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:27,725 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:27,725 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:27,725 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-09 15:36:27,726 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:27,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:27,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1044886740, now seen corresponding path program 11 times [2023-12-09 15:36:27,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:27,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939102596] [2023-12-09 15:36:27,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:27,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:27,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:27,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:27,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:27,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939102596] [2023-12-09 15:36:27,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939102596] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:27,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:36:27,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-09 15:36:27,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827631683] [2023-12-09 15:36:27,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:27,892 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-09 15:36:27,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:27,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-09 15:36:27,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-09 15:36:27,894 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2023-12-09 15:36:27,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 279 transitions, 5532 flow. Second operand has 14 states, 14 states have (on average 47.92857142857143) internal successors, (671), 14 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:27,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:27,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2023-12-09 15:36:27,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:28,123 INFO L124 PetriNetUnfolderBase]: 174/683 cut-off events. [2023-12-09 15:36:28,123 INFO L125 PetriNetUnfolderBase]: For 6108/6504 co-relation queries the response was YES. [2023-12-09 15:36:28,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5711 conditions, 683 events. 174/683 cut-off events. For 6108/6504 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4489 event pairs, 15 based on Foata normal form. 5/620 useless extension candidates. Maximal degree in co-relation 3731. Up to 241 conditions per place. [2023-12-09 15:36:28,129 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 114 selfloop transitions, 36 changer transitions 99/285 dead transitions. [2023-12-09 15:36:28,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 285 transitions, 6168 flow [2023-12-09 15:36:28,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-09 15:36:28,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-12-09 15:36:28,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 822 transitions. [2023-12-09 15:36:28,130 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5973837209302325 [2023-12-09 15:36:28,130 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 822 transitions. [2023-12-09 15:36:28,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 822 transitions. [2023-12-09 15:36:28,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:28,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 822 transitions. [2023-12-09 15:36:28,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 51.375) internal successors, (822), 16 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:28,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:28,134 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:28,135 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 165 predicate places. [2023-12-09 15:36:28,135 INFO L500 AbstractCegarLoop]: Abstraction has has 241 places, 285 transitions, 6168 flow [2023-12-09 15:36:28,135 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 47.92857142857143) internal successors, (671), 14 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:28,135 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:28,135 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:28,136 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-09 15:36:28,136 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:28,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:28,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1408486842, now seen corresponding path program 12 times [2023-12-09 15:36:28,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:28,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693253389] [2023-12-09 15:36:28,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:28,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:28,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:28,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:28,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693253389] [2023-12-09 15:36:28,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693253389] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:28,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:36:28,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-09 15:36:28,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55207191] [2023-12-09 15:36:28,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:28,323 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-09 15:36:28,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:28,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-09 15:36:28,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-09 15:36:28,324 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2023-12-09 15:36:28,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 285 transitions, 6168 flow. Second operand has 14 states, 14 states have (on average 47.92857142857143) internal successors, (671), 14 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:28,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:28,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2023-12-09 15:36:28,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:28,568 INFO L124 PetriNetUnfolderBase]: 177/709 cut-off events. [2023-12-09 15:36:28,569 INFO L125 PetriNetUnfolderBase]: For 7372/7756 co-relation queries the response was YES. [2023-12-09 15:36:28,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6358 conditions, 709 events. 177/709 cut-off events. For 7372/7756 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4744 event pairs, 17 based on Foata normal form. 8/649 useless extension candidates. Maximal degree in co-relation 4139. Up to 250 conditions per place. [2023-12-09 15:36:28,574 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 116 selfloop transitions, 40 changer transitions 108/300 dead transitions. [2023-12-09 15:36:28,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 300 transitions, 7065 flow [2023-12-09 15:36:28,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-09 15:36:28,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-12-09 15:36:28,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 819 transitions. [2023-12-09 15:36:28,577 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.595203488372093 [2023-12-09 15:36:28,577 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 819 transitions. [2023-12-09 15:36:28,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 819 transitions. [2023-12-09 15:36:28,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:28,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 819 transitions. [2023-12-09 15:36:28,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 51.1875) internal successors, (819), 16 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:28,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:28,581 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:28,581 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 180 predicate places. [2023-12-09 15:36:28,581 INFO L500 AbstractCegarLoop]: Abstraction has has 256 places, 300 transitions, 7065 flow [2023-12-09 15:36:28,582 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 47.92857142857143) internal successors, (671), 14 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:28,582 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:28,582 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:28,582 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-09 15:36:28,582 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:28,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:28,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1087495914, now seen corresponding path program 13 times [2023-12-09 15:36:28,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:28,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500032861] [2023-12-09 15:36:28,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:28,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:28,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:28,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:28,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:28,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500032861] [2023-12-09 15:36:28,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500032861] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:28,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:36:28,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-09 15:36:28,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913244678] [2023-12-09 15:36:28,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:28,736 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-09 15:36:28,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:28,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-09 15:36:28,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-09 15:36:28,737 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2023-12-09 15:36:28,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 300 transitions, 7065 flow. Second operand has 14 states, 14 states have (on average 47.92857142857143) internal successors, (671), 14 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:28,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:28,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2023-12-09 15:36:28,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:29,022 INFO L124 PetriNetUnfolderBase]: 179/737 cut-off events. [2023-12-09 15:36:29,022 INFO L125 PetriNetUnfolderBase]: For 9180/9752 co-relation queries the response was YES. [2023-12-09 15:36:29,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7060 conditions, 737 events. 179/737 cut-off events. For 9180/9752 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5063 event pairs, 15 based on Foata normal form. 2/669 useless extension candidates. Maximal degree in co-relation 4565. Up to 265 conditions per place. [2023-12-09 15:36:29,028 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 119 selfloop transitions, 41 changer transitions 116/312 dead transitions. [2023-12-09 15:36:29,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 312 transitions, 7935 flow [2023-12-09 15:36:29,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-09 15:36:29,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-12-09 15:36:29,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 822 transitions. [2023-12-09 15:36:29,030 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5973837209302325 [2023-12-09 15:36:29,030 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 822 transitions. [2023-12-09 15:36:29,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 822 transitions. [2023-12-09 15:36:29,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:29,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 822 transitions. [2023-12-09 15:36:29,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 51.375) internal successors, (822), 16 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:29,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:29,033 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:29,034 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 195 predicate places. [2023-12-09 15:36:29,034 INFO L500 AbstractCegarLoop]: Abstraction has has 271 places, 312 transitions, 7935 flow [2023-12-09 15:36:29,034 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 47.92857142857143) internal successors, (671), 14 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:29,034 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:29,034 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:29,034 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-09 15:36:29,034 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:29,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:29,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1706126252, now seen corresponding path program 14 times [2023-12-09 15:36:29,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:29,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596080345] [2023-12-09 15:36:29,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:29,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:29,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:29,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:29,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596080345] [2023-12-09 15:36:29,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596080345] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:29,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:36:29,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-09 15:36:29,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54548537] [2023-12-09 15:36:29,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:29,205 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-09 15:36:29,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:29,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-09 15:36:29,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-09 15:36:29,207 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2023-12-09 15:36:29,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 312 transitions, 7935 flow. Second operand has 14 states, 14 states have (on average 47.92857142857143) internal successors, (671), 14 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:29,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:29,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2023-12-09 15:36:29,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:29,410 INFO L124 PetriNetUnfolderBase]: 178/748 cut-off events. [2023-12-09 15:36:29,410 INFO L125 PetriNetUnfolderBase]: For 10976/11652 co-relation queries the response was YES. [2023-12-09 15:36:29,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7637 conditions, 748 events. 178/748 cut-off events. For 10976/11652 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5188 event pairs, 15 based on Foata normal form. 2/680 useless extension candidates. Maximal degree in co-relation 4881. Up to 270 conditions per place. [2023-12-09 15:36:29,422 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 119 selfloop transitions, 38 changer transitions 125/318 dead transitions. [2023-12-09 15:36:29,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 318 transitions, 8673 flow [2023-12-09 15:36:29,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-09 15:36:29,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-12-09 15:36:29,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 818 transitions. [2023-12-09 15:36:29,433 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5944767441860465 [2023-12-09 15:36:29,433 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 818 transitions. [2023-12-09 15:36:29,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 818 transitions. [2023-12-09 15:36:29,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:29,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 818 transitions. [2023-12-09 15:36:29,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 51.125) internal successors, (818), 16 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:29,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:29,436 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:29,437 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 210 predicate places. [2023-12-09 15:36:29,437 INFO L500 AbstractCegarLoop]: Abstraction has has 286 places, 318 transitions, 8673 flow [2023-12-09 15:36:29,437 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 47.92857142857143) internal successors, (671), 14 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:29,437 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:29,437 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:29,437 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-09 15:36:29,438 INFO L425 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:29,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:29,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1760477266, now seen corresponding path program 15 times [2023-12-09 15:36:29,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:29,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986742076] [2023-12-09 15:36:29,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:29,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:29,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:29,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:29,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:29,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986742076] [2023-12-09 15:36:29,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986742076] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:29,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:36:29,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-09 15:36:29,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565869553] [2023-12-09 15:36:29,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:29,647 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-09 15:36:29,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:29,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-09 15:36:29,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-12-09 15:36:29,648 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2023-12-09 15:36:29,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 318 transitions, 8673 flow. Second operand has 15 states, 15 states have (on average 47.8) internal successors, (717), 15 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:29,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:29,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2023-12-09 15:36:29,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:29,888 INFO L124 PetriNetUnfolderBase]: 193/787 cut-off events. [2023-12-09 15:36:29,889 INFO L125 PetriNetUnfolderBase]: For 12734/13440 co-relation queries the response was YES. [2023-12-09 15:36:29,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8690 conditions, 787 events. 193/787 cut-off events. For 12734/13440 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5491 event pairs, 18 based on Foata normal form. 8/721 useless extension candidates. Maximal degree in co-relation 5663. Up to 280 conditions per place. [2023-12-09 15:36:29,897 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 127 selfloop transitions, 45 changer transitions 134/342 dead transitions. [2023-12-09 15:36:29,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 342 transitions, 10014 flow [2023-12-09 15:36:29,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-09 15:36:29,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-12-09 15:36:29,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 823 transitions. [2023-12-09 15:36:29,898 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5981104651162791 [2023-12-09 15:36:29,898 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 823 transitions. [2023-12-09 15:36:29,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 823 transitions. [2023-12-09 15:36:29,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:29,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 823 transitions. [2023-12-09 15:36:29,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 51.4375) internal successors, (823), 16 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:29,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:29,902 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:29,902 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 225 predicate places. [2023-12-09 15:36:29,902 INFO L500 AbstractCegarLoop]: Abstraction has has 301 places, 342 transitions, 10014 flow [2023-12-09 15:36:29,911 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 47.8) internal successors, (717), 15 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:29,912 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:29,912 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:29,912 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-09 15:36:29,912 INFO L425 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:29,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:29,912 INFO L85 PathProgramCache]: Analyzing trace with hash 223713006, now seen corresponding path program 16 times [2023-12-09 15:36:29,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:29,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337194404] [2023-12-09 15:36:29,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:29,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:30,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:30,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:30,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337194404] [2023-12-09 15:36:30,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337194404] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:30,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:36:30,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-09 15:36:30,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122865598] [2023-12-09 15:36:30,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:30,060 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-09 15:36:30,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:30,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-09 15:36:30,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-12-09 15:36:30,061 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2023-12-09 15:36:30,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 342 transitions, 10014 flow. Second operand has 14 states, 14 states have (on average 47.92857142857143) internal successors, (671), 14 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:30,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:30,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2023-12-09 15:36:30,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:30,465 INFO L124 PetriNetUnfolderBase]: 192/806 cut-off events. [2023-12-09 15:36:30,465 INFO L125 PetriNetUnfolderBase]: For 14389/15121 co-relation queries the response was YES. [2023-12-09 15:36:30,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9392 conditions, 806 events. 192/806 cut-off events. For 14389/15121 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5835 event pairs, 14 based on Foata normal form. 6/740 useless extension candidates. Maximal degree in co-relation 6080. Up to 289 conditions per place. [2023-12-09 15:36:30,472 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 130 selfloop transitions, 46 changer transitions 142/354 dead transitions. [2023-12-09 15:36:30,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 354 transitions, 11040 flow [2023-12-09 15:36:30,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-09 15:36:30,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-12-09 15:36:30,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 825 transitions. [2023-12-09 15:36:30,481 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5995639534883721 [2023-12-09 15:36:30,481 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 825 transitions. [2023-12-09 15:36:30,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 825 transitions. [2023-12-09 15:36:30,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:30,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 825 transitions. [2023-12-09 15:36:30,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 51.5625) internal successors, (825), 16 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:30,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:30,484 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:30,485 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 240 predicate places. [2023-12-09 15:36:30,485 INFO L500 AbstractCegarLoop]: Abstraction has has 316 places, 354 transitions, 11040 flow [2023-12-09 15:36:30,485 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 47.92857142857143) internal successors, (671), 14 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:30,485 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:30,485 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:30,485 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-09 15:36:30,485 INFO L425 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:30,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:30,486 INFO L85 PathProgramCache]: Analyzing trace with hash 31408318, now seen corresponding path program 17 times [2023-12-09 15:36:30,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:30,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771340174] [2023-12-09 15:36:30,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:30,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:30,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:30,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:30,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:30,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771340174] [2023-12-09 15:36:30,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771340174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:30,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:36:30,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-09 15:36:30,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233516170] [2023-12-09 15:36:30,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:30,652 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-09 15:36:30,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:30,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-09 15:36:30,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-09 15:36:30,653 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2023-12-09 15:36:30,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 354 transitions, 11040 flow. Second operand has 14 states, 14 states have (on average 47.92857142857143) internal successors, (671), 14 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:30,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:30,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2023-12-09 15:36:30,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:30,955 INFO L124 PetriNetUnfolderBase]: 194/828 cut-off events. [2023-12-09 15:36:30,955 INFO L125 PetriNetUnfolderBase]: For 17758/18739 co-relation queries the response was YES. [2023-12-09 15:36:30,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10169 conditions, 828 events. 194/828 cut-off events. For 17758/18739 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6083 event pairs, 13 based on Foata normal form. 10/764 useless extension candidates. Maximal degree in co-relation 6501. Up to 301 conditions per place. [2023-12-09 15:36:30,963 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 131 selfloop transitions, 44 changer transitions 151/362 dead transitions. [2023-12-09 15:36:30,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 362 transitions, 11973 flow [2023-12-09 15:36:30,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-09 15:36:30,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-12-09 15:36:30,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 822 transitions. [2023-12-09 15:36:30,965 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5973837209302325 [2023-12-09 15:36:30,965 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 822 transitions. [2023-12-09 15:36:30,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 822 transitions. [2023-12-09 15:36:30,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:30,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 822 transitions. [2023-12-09 15:36:30,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 51.375) internal successors, (822), 16 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:30,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:30,967 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:30,968 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 255 predicate places. [2023-12-09 15:36:30,968 INFO L500 AbstractCegarLoop]: Abstraction has has 331 places, 362 transitions, 11973 flow [2023-12-09 15:36:30,968 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 47.92857142857143) internal successors, (671), 14 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:30,968 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:30,968 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:30,968 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-09 15:36:30,968 INFO L425 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:30,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:30,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1458873042, now seen corresponding path program 18 times [2023-12-09 15:36:30,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:30,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880140342] [2023-12-09 15:36:30,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:30,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:31,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:31,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:31,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880140342] [2023-12-09 15:36:31,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880140342] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:31,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:36:31,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-09 15:36:31,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133665096] [2023-12-09 15:36:31,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:31,118 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-09 15:36:31,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:31,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-09 15:36:31,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-12-09 15:36:31,119 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2023-12-09 15:36:31,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 362 transitions, 11973 flow. Second operand has 15 states, 15 states have (on average 47.8) internal successors, (717), 15 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:31,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:31,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2023-12-09 15:36:31,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:31,462 INFO L124 PetriNetUnfolderBase]: 196/856 cut-off events. [2023-12-09 15:36:31,462 INFO L125 PetriNetUnfolderBase]: For 20417/21470 co-relation queries the response was YES. [2023-12-09 15:36:31,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11016 conditions, 856 events. 196/856 cut-off events. For 20417/21470 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6417 event pairs, 14 based on Foata normal form. 14/797 useless extension candidates. Maximal degree in co-relation 6893. Up to 315 conditions per place. [2023-12-09 15:36:31,469 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 135 selfloop transitions, 44 changer transitions 160/375 dead transitions. [2023-12-09 15:36:31,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 375 transitions, 13131 flow [2023-12-09 15:36:31,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-09 15:36:31,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-12-09 15:36:31,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 826 transitions. [2023-12-09 15:36:31,471 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6002906976744186 [2023-12-09 15:36:31,471 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 826 transitions. [2023-12-09 15:36:31,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 826 transitions. [2023-12-09 15:36:31,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:31,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 826 transitions. [2023-12-09 15:36:31,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 51.625) internal successors, (826), 16 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:31,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:31,474 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:31,474 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 270 predicate places. [2023-12-09 15:36:31,474 INFO L500 AbstractCegarLoop]: Abstraction has has 346 places, 375 transitions, 13131 flow [2023-12-09 15:36:31,474 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 47.8) internal successors, (717), 15 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:31,474 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:31,474 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:31,475 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-09 15:36:31,475 INFO L425 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:31,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:31,475 INFO L85 PathProgramCache]: Analyzing trace with hash 220155180, now seen corresponding path program 19 times [2023-12-09 15:36:31,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:31,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012354463] [2023-12-09 15:36:31,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:31,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:31,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:31,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:31,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012354463] [2023-12-09 15:36:31,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012354463] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:31,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:36:31,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-09 15:36:31,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991536389] [2023-12-09 15:36:31,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:31,636 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-09 15:36:31,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:31,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-09 15:36:31,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-09 15:36:31,639 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2023-12-09 15:36:31,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 375 transitions, 13131 flow. Second operand has 14 states, 14 states have (on average 47.92857142857143) internal successors, (671), 14 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:31,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:31,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2023-12-09 15:36:31,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:31,961 INFO L124 PetriNetUnfolderBase]: 195/870 cut-off events. [2023-12-09 15:36:31,961 INFO L125 PetriNetUnfolderBase]: For 23304/24435 co-relation queries the response was YES. [2023-12-09 15:36:31,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11724 conditions, 870 events. 195/870 cut-off events. For 23304/24435 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 6600 event pairs, 14 based on Foata normal form. 8/805 useless extension candidates. Maximal degree in co-relation 7275. Up to 321 conditions per place. [2023-12-09 15:36:31,970 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 135 selfloop transitions, 42 changer transitions 169/382 dead transitions. [2023-12-09 15:36:31,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 382 transitions, 14095 flow [2023-12-09 15:36:31,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-09 15:36:31,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-12-09 15:36:31,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 822 transitions. [2023-12-09 15:36:31,971 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5973837209302325 [2023-12-09 15:36:31,971 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 822 transitions. [2023-12-09 15:36:31,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 822 transitions. [2023-12-09 15:36:31,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:31,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 822 transitions. [2023-12-09 15:36:31,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 51.375) internal successors, (822), 16 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:31,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:31,974 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:31,974 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 285 predicate places. [2023-12-09 15:36:31,974 INFO L500 AbstractCegarLoop]: Abstraction has has 361 places, 382 transitions, 14095 flow [2023-12-09 15:36:31,975 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 47.92857142857143) internal successors, (671), 14 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:31,975 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:31,975 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:31,975 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-09 15:36:31,975 INFO L425 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:31,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:31,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1953115860, now seen corresponding path program 20 times [2023-12-09 15:36:31,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:31,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363878523] [2023-12-09 15:36:31,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:31,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:32,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:32,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:32,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363878523] [2023-12-09 15:36:32,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363878523] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:32,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:36:32,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-09 15:36:32,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382997694] [2023-12-09 15:36:32,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:32,136 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-09 15:36:32,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:32,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-09 15:36:32,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-09 15:36:32,137 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2023-12-09 15:36:32,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 382 transitions, 14095 flow. Second operand has 14 states, 14 states have (on average 47.92857142857143) internal successors, (671), 14 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:32,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:32,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2023-12-09 15:36:32,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:32,488 INFO L124 PetriNetUnfolderBase]: 194/874 cut-off events. [2023-12-09 15:36:32,489 INFO L125 PetriNetUnfolderBase]: For 25539/26727 co-relation queries the response was YES. [2023-12-09 15:36:32,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12416 conditions, 874 events. 194/874 cut-off events. For 25539/26727 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 6614 event pairs, 14 based on Foata normal form. 2/803 useless extension candidates. Maximal degree in co-relation 9383. Up to 326 conditions per place. [2023-12-09 15:36:32,498 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 134 selfloop transitions, 40 changer transitions 178/388 dead transitions. [2023-12-09 15:36:32,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 388 transitions, 15045 flow [2023-12-09 15:36:32,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-09 15:36:32,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-12-09 15:36:32,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 821 transitions. [2023-12-09 15:36:32,499 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.596656976744186 [2023-12-09 15:36:32,499 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 821 transitions. [2023-12-09 15:36:32,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 821 transitions. [2023-12-09 15:36:32,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:32,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 821 transitions. [2023-12-09 15:36:32,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 51.3125) internal successors, (821), 16 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:32,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:32,502 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 86.0) internal successors, (1462), 17 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:32,502 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 300 predicate places. [2023-12-09 15:36:32,502 INFO L500 AbstractCegarLoop]: Abstraction has has 376 places, 388 transitions, 15045 flow [2023-12-09 15:36:32,502 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 47.92857142857143) internal successors, (671), 14 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:32,502 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:32,502 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:32,503 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-09 15:36:32,503 INFO L425 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:32,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:32,503 INFO L85 PathProgramCache]: Analyzing trace with hash -578456715, now seen corresponding path program 1 times [2023-12-09 15:36:32,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:32,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019436871] [2023-12-09 15:36:32,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:32,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:32,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:32,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:32,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019436871] [2023-12-09 15:36:32,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019436871] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:36:32,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607448566] [2023-12-09 15:36:32,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:32,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:36:32,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:36:32,531 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:36:32,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-09 15:36:32,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:32,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-09 15:36:32,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:36:32,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:32,649 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:36:32,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:32,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607448566] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-09 15:36:32,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-09 15:36:32,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2023-12-09 15:36:32,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051445765] [2023-12-09 15:36:32,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:32,671 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:36:32,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:32,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:36:32,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-09 15:36:32,672 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 86 [2023-12-09 15:36:32,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 388 transitions, 15045 flow. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:32,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:32,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 86 [2023-12-09 15:36:32,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:32,861 INFO L124 PetriNetUnfolderBase]: 201/894 cut-off events. [2023-12-09 15:36:32,862 INFO L125 PetriNetUnfolderBase]: For 30020/31477 co-relation queries the response was YES. [2023-12-09 15:36:32,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13456 conditions, 894 events. 201/894 cut-off events. For 30020/31477 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6721 event pairs, 4 based on Foata normal form. 7/827 useless extension candidates. Maximal degree in co-relation 8364. Up to 339 conditions per place. [2023-12-09 15:36:32,870 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 161 selfloop transitions, 64 changer transitions 178/451 dead transitions. [2023-12-09 15:36:32,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 451 transitions, 18363 flow [2023-12-09 15:36:32,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-09 15:36:32,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-12-09 15:36:32,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 476 transitions. [2023-12-09 15:36:32,872 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7906976744186046 [2023-12-09 15:36:32,872 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 476 transitions. [2023-12-09 15:36:32,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 476 transitions. [2023-12-09 15:36:32,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:32,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 476 transitions. [2023-12-09 15:36:32,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 68.0) internal successors, (476), 7 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:32,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 86.0) internal successors, (688), 8 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:32,873 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 86.0) internal successors, (688), 8 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:32,874 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 306 predicate places. [2023-12-09 15:36:32,874 INFO L500 AbstractCegarLoop]: Abstraction has has 382 places, 451 transitions, 18363 flow [2023-12-09 15:36:32,874 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:32,874 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:32,874 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:32,895 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-09 15:36:33,078 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-12-09 15:36:33,078 INFO L425 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:33,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:33,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1938803617, now seen corresponding path program 1 times [2023-12-09 15:36:33,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:33,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411878490] [2023-12-09 15:36:33,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:33,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:33,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:33,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:33,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411878490] [2023-12-09 15:36:33,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411878490] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:33,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:36:33,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:36:33,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993301847] [2023-12-09 15:36:33,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:33,137 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:36:33,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:33,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:36:33,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:36:33,138 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 86 [2023-12-09 15:36:33,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 451 transitions, 18363 flow. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:33,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:33,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 86 [2023-12-09 15:36:33,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:33,403 INFO L124 PetriNetUnfolderBase]: 212/908 cut-off events. [2023-12-09 15:36:33,403 INFO L125 PetriNetUnfolderBase]: For 30550/32100 co-relation queries the response was YES. [2023-12-09 15:36:33,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14473 conditions, 908 events. 212/908 cut-off events. For 30550/32100 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6766 event pairs, 4 based on Foata normal form. 24/861 useless extension candidates. Maximal degree in co-relation 9430. Up to 325 conditions per place. [2023-12-09 15:36:33,411 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 192 selfloop transitions, 45 changer transitions 187/472 dead transitions. [2023-12-09 15:36:33,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 472 transitions, 19974 flow [2023-12-09 15:36:33,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-09 15:36:33,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-12-09 15:36:33,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 480 transitions. [2023-12-09 15:36:33,413 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7973421926910299 [2023-12-09 15:36:33,413 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 480 transitions. [2023-12-09 15:36:33,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 480 transitions. [2023-12-09 15:36:33,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:33,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 480 transitions. [2023-12-09 15:36:33,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 68.57142857142857) internal successors, (480), 7 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:33,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 86.0) internal successors, (688), 8 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:33,414 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 86.0) internal successors, (688), 8 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:33,414 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 312 predicate places. [2023-12-09 15:36:33,415 INFO L500 AbstractCegarLoop]: Abstraction has has 388 places, 472 transitions, 19974 flow [2023-12-09 15:36:33,415 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:33,415 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:33,415 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:33,415 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-09 15:36:33,415 INFO L425 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:33,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:33,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1559775845, now seen corresponding path program 2 times [2023-12-09 15:36:33,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:33,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467093458] [2023-12-09 15:36:33,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:33,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:33,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:33,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:33,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:33,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467093458] [2023-12-09 15:36:33,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467093458] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:33,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:36:33,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:36:33,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655564870] [2023-12-09 15:36:33,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:33,443 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:36:33,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:33,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:36:33,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:36:33,444 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 86 [2023-12-09 15:36:33,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 472 transitions, 19974 flow. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:33,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:33,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 86 [2023-12-09 15:36:33,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:33,675 INFO L124 PetriNetUnfolderBase]: 233/992 cut-off events. [2023-12-09 15:36:33,675 INFO L125 PetriNetUnfolderBase]: For 33622/34797 co-relation queries the response was YES. [2023-12-09 15:36:33,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16557 conditions, 992 events. 233/992 cut-off events. For 33622/34797 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 7566 event pairs, 6 based on Foata normal form. 27/944 useless extension candidates. Maximal degree in co-relation 10978. Up to 371 conditions per place. [2023-12-09 15:36:33,686 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 209 selfloop transitions, 75 changer transitions 187/519 dead transitions. [2023-12-09 15:36:33,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 519 transitions, 22929 flow [2023-12-09 15:36:33,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 15:36:33,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 15:36:33,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 559 transitions. [2023-12-09 15:36:33,687 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8125 [2023-12-09 15:36:33,687 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 559 transitions. [2023-12-09 15:36:33,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 559 transitions. [2023-12-09 15:36:33,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:33,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 559 transitions. [2023-12-09 15:36:33,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 69.875) internal successors, (559), 8 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:33,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 86.0) internal successors, (774), 9 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:33,689 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 86.0) internal successors, (774), 9 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:33,689 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 319 predicate places. [2023-12-09 15:36:33,690 INFO L500 AbstractCegarLoop]: Abstraction has has 395 places, 519 transitions, 22929 flow [2023-12-09 15:36:33,690 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:33,690 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:33,690 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:33,690 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-09 15:36:33,690 INFO L425 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:33,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:33,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1616175277, now seen corresponding path program 3 times [2023-12-09 15:36:33,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:33,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435766009] [2023-12-09 15:36:33,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:33,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:33,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:33,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:33,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435766009] [2023-12-09 15:36:33,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435766009] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:33,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:36:33,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:36:33,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012834323] [2023-12-09 15:36:33,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:33,716 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:36:33,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:33,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:36:33,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:36:33,717 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 86 [2023-12-09 15:36:33,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 519 transitions, 22929 flow. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:33,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:33,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 86 [2023-12-09 15:36:33,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:34,079 INFO L124 PetriNetUnfolderBase]: 262/1069 cut-off events. [2023-12-09 15:36:34,079 INFO L125 PetriNetUnfolderBase]: For 37793/39030 co-relation queries the response was YES. [2023-12-09 15:36:34,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18869 conditions, 1069 events. 262/1069 cut-off events. For 37793/39030 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8221 event pairs, 3 based on Foata normal form. 24/1015 useless extension candidates. Maximal degree in co-relation 12807. Up to 392 conditions per place. [2023-12-09 15:36:34,092 INFO L140 encePairwiseOnDemand]: 76/86 looper letters, 222 selfloop transitions, 124 changer transitions 190/584 dead transitions. [2023-12-09 15:36:34,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 584 transitions, 26978 flow [2023-12-09 15:36:34,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-09 15:36:34,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-09 15:36:34,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 608 transitions. [2023-12-09 15:36:34,093 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7855297157622739 [2023-12-09 15:36:34,093 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 608 transitions. [2023-12-09 15:36:34,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 608 transitions. [2023-12-09 15:36:34,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:34,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 608 transitions. [2023-12-09 15:36:34,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 67.55555555555556) internal successors, (608), 9 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:34,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:34,095 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:34,095 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 327 predicate places. [2023-12-09 15:36:34,096 INFO L500 AbstractCegarLoop]: Abstraction has has 403 places, 584 transitions, 26978 flow [2023-12-09 15:36:34,096 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:34,096 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:34,096 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:34,096 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-09 15:36:34,096 INFO L425 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:34,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:34,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1638411597, now seen corresponding path program 2 times [2023-12-09 15:36:34,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:34,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736357655] [2023-12-09 15:36:34,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:34,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:34,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:34,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:34,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736357655] [2023-12-09 15:36:34,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736357655] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:34,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:36:34,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:36:34,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168554787] [2023-12-09 15:36:34,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:34,129 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:36:34,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:34,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:36:34,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:36:34,130 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 86 [2023-12-09 15:36:34,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 584 transitions, 26978 flow. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:34,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:34,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 86 [2023-12-09 15:36:34,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:34,470 INFO L124 PetriNetUnfolderBase]: 288/1192 cut-off events. [2023-12-09 15:36:34,470 INFO L125 PetriNetUnfolderBase]: For 44622/45905 co-relation queries the response was YES. [2023-12-09 15:36:34,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21510 conditions, 1192 events. 288/1192 cut-off events. For 44622/45905 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9498 event pairs, 3 based on Foata normal form. 19/1131 useless extension candidates. Maximal degree in co-relation 17435. Up to 449 conditions per place. [2023-12-09 15:36:34,489 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 288 selfloop transitions, 107 changer transitions 190/633 dead transitions. [2023-12-09 15:36:34,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 633 transitions, 30455 flow [2023-12-09 15:36:34,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 15:36:34,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 15:36:34,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 561 transitions. [2023-12-09 15:36:34,490 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.815406976744186 [2023-12-09 15:36:34,490 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 561 transitions. [2023-12-09 15:36:34,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 561 transitions. [2023-12-09 15:36:34,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:34,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 561 transitions. [2023-12-09 15:36:34,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:34,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 86.0) internal successors, (774), 9 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:34,492 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 86.0) internal successors, (774), 9 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:34,492 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 334 predicate places. [2023-12-09 15:36:34,492 INFO L500 AbstractCegarLoop]: Abstraction has has 410 places, 633 transitions, 30455 flow [2023-12-09 15:36:34,493 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:34,493 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:34,493 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:34,493 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-09 15:36:34,493 INFO L425 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:34,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:34,494 INFO L85 PathProgramCache]: Analyzing trace with hash 2088803767, now seen corresponding path program 3 times [2023-12-09 15:36:34,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:34,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236092452] [2023-12-09 15:36:34,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:34,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:34,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:34,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:34,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236092452] [2023-12-09 15:36:34,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236092452] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:34,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:36:34,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:36:34,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054526751] [2023-12-09 15:36:34,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:34,524 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:36:34,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:34,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:36:34,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:36:34,525 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 86 [2023-12-09 15:36:34,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 633 transitions, 30455 flow. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:34,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:34,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 86 [2023-12-09 15:36:34,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:34,883 INFO L124 PetriNetUnfolderBase]: 282/1172 cut-off events. [2023-12-09 15:36:34,883 INFO L125 PetriNetUnfolderBase]: For 48690/50107 co-relation queries the response was YES. [2023-12-09 15:36:34,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21617 conditions, 1172 events. 282/1172 cut-off events. For 48690/50107 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9274 event pairs, 5 based on Foata normal form. 16/1112 useless extension candidates. Maximal degree in co-relation 14652. Up to 431 conditions per place. [2023-12-09 15:36:34,898 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 311 selfloop transitions, 79 changer transitions 192/630 dead transitions. [2023-12-09 15:36:34,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 630 transitions, 31299 flow [2023-12-09 15:36:34,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 15:36:34,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 15:36:34,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 554 transitions. [2023-12-09 15:36:34,899 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8052325581395349 [2023-12-09 15:36:34,899 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 554 transitions. [2023-12-09 15:36:34,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 554 transitions. [2023-12-09 15:36:34,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:34,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 554 transitions. [2023-12-09 15:36:34,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 69.25) internal successors, (554), 8 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:34,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 86.0) internal successors, (774), 9 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:34,901 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 86.0) internal successors, (774), 9 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:34,901 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 341 predicate places. [2023-12-09 15:36:34,901 INFO L500 AbstractCegarLoop]: Abstraction has has 417 places, 630 transitions, 31299 flow [2023-12-09 15:36:34,902 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:34,902 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:34,902 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:34,902 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-09 15:36:34,902 INFO L425 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:34,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:34,902 INFO L85 PathProgramCache]: Analyzing trace with hash -2083635953, now seen corresponding path program 4 times [2023-12-09 15:36:34,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:34,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407983634] [2023-12-09 15:36:34,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:34,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:34,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:34,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:34,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407983634] [2023-12-09 15:36:34,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407983634] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:34,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:36:34,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:36:34,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369585096] [2023-12-09 15:36:34,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:34,930 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:36:34,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:34,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:36:34,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:36:34,930 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 86 [2023-12-09 15:36:34,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 630 transitions, 31299 flow. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:34,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:34,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 86 [2023-12-09 15:36:34,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:35,331 INFO L124 PetriNetUnfolderBase]: 267/1109 cut-off events. [2023-12-09 15:36:35,331 INFO L125 PetriNetUnfolderBase]: For 47839/49059 co-relation queries the response was YES. [2023-12-09 15:36:35,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21208 conditions, 1109 events. 267/1109 cut-off events. For 47839/49059 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 8713 event pairs, 3 based on Foata normal form. 15/1056 useless extension candidates. Maximal degree in co-relation 17381. Up to 397 conditions per place. [2023-12-09 15:36:35,344 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 293 selfloop transitions, 72 changer transitions 195/608 dead transitions. [2023-12-09 15:36:35,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 608 transitions, 31049 flow [2023-12-09 15:36:35,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 15:36:35,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 15:36:35,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 552 transitions. [2023-12-09 15:36:35,345 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8023255813953488 [2023-12-09 15:36:35,345 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 552 transitions. [2023-12-09 15:36:35,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 552 transitions. [2023-12-09 15:36:35,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:35,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 552 transitions. [2023-12-09 15:36:35,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 69.0) internal successors, (552), 8 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:35,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 86.0) internal successors, (774), 9 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:35,347 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 86.0) internal successors, (774), 9 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:35,347 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 348 predicate places. [2023-12-09 15:36:35,347 INFO L500 AbstractCegarLoop]: Abstraction has has 424 places, 608 transitions, 31049 flow [2023-12-09 15:36:35,347 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:35,347 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:35,348 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:35,348 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-09 15:36:35,348 INFO L425 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:35,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:35,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1931866579, now seen corresponding path program 4 times [2023-12-09 15:36:35,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:35,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841054443] [2023-12-09 15:36:35,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:35,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:35,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:35,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:35,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841054443] [2023-12-09 15:36:35,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841054443] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:35,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:36:35,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:36:35,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089509678] [2023-12-09 15:36:35,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:35,376 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:36:35,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:35,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:36:35,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:36:35,377 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 86 [2023-12-09 15:36:35,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 608 transitions, 31049 flow. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:35,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:35,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 86 [2023-12-09 15:36:35,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:35,676 INFO L124 PetriNetUnfolderBase]: 262/1106 cut-off events. [2023-12-09 15:36:35,676 INFO L125 PetriNetUnfolderBase]: For 52135/53504 co-relation queries the response was YES. [2023-12-09 15:36:35,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21557 conditions, 1106 events. 262/1106 cut-off events. For 52135/53504 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8663 event pairs, 5 based on Foata normal form. 21/1060 useless extension candidates. Maximal degree in co-relation 14900. Up to 389 conditions per place. [2023-12-09 15:36:35,691 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 299 selfloop transitions, 49 changer transitions 202/598 dead transitions. [2023-12-09 15:36:35,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 598 transitions, 31425 flow [2023-12-09 15:36:35,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-09 15:36:35,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-12-09 15:36:35,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 478 transitions. [2023-12-09 15:36:35,692 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7940199335548173 [2023-12-09 15:36:35,692 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 478 transitions. [2023-12-09 15:36:35,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 478 transitions. [2023-12-09 15:36:35,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:35,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 478 transitions. [2023-12-09 15:36:35,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 68.28571428571429) internal successors, (478), 7 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:35,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 86.0) internal successors, (688), 8 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:35,694 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 86.0) internal successors, (688), 8 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:35,697 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 354 predicate places. [2023-12-09 15:36:35,697 INFO L500 AbstractCegarLoop]: Abstraction has has 430 places, 598 transitions, 31425 flow [2023-12-09 15:36:35,697 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:35,697 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:35,697 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:35,697 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-09 15:36:35,697 INFO L425 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:35,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:35,697 INFO L85 PathProgramCache]: Analyzing trace with hash -163392557, now seen corresponding path program 5 times [2023-12-09 15:36:35,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:35,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574338994] [2023-12-09 15:36:35,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:35,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:35,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:35,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:35,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574338994] [2023-12-09 15:36:35,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574338994] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:35,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:36:35,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:36:35,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326583255] [2023-12-09 15:36:35,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:35,723 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:36:35,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:35,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:36:35,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:36:35,724 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 86 [2023-12-09 15:36:35,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 598 transitions, 31425 flow. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:35,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:35,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 86 [2023-12-09 15:36:35,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:36,049 INFO L124 PetriNetUnfolderBase]: 258/1092 cut-off events. [2023-12-09 15:36:36,049 INFO L125 PetriNetUnfolderBase]: For 54252/55483 co-relation queries the response was YES. [2023-12-09 15:36:36,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21960 conditions, 1092 events. 258/1092 cut-off events. For 54252/55483 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 8570 event pairs, 2 based on Foata normal form. 16/1045 useless extension candidates. Maximal degree in co-relation 18029. Up to 384 conditions per place. [2023-12-09 15:36:36,064 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 275 selfloop transitions, 64 changer transitions 204/591 dead transitions. [2023-12-09 15:36:36,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 591 transitions, 31941 flow [2023-12-09 15:36:36,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 15:36:36,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 15:36:36,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 553 transitions. [2023-12-09 15:36:36,068 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8037790697674418 [2023-12-09 15:36:36,068 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 553 transitions. [2023-12-09 15:36:36,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 553 transitions. [2023-12-09 15:36:36,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:36,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 553 transitions. [2023-12-09 15:36:36,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 69.125) internal successors, (553), 8 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:36,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 86.0) internal successors, (774), 9 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:36,071 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 86.0) internal successors, (774), 9 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:36,072 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 361 predicate places. [2023-12-09 15:36:36,073 INFO L500 AbstractCegarLoop]: Abstraction has has 437 places, 591 transitions, 31941 flow [2023-12-09 15:36:36,073 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:36,073 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:36,073 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:36,073 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-09 15:36:36,073 INFO L425 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:36,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:36,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1757682921, now seen corresponding path program 6 times [2023-12-09 15:36:36,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:36,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328798050] [2023-12-09 15:36:36,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:36,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:36,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:36,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:36,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:36,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328798050] [2023-12-09 15:36:36,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328798050] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:36,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:36:36,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:36:36,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040324416] [2023-12-09 15:36:36,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:36,105 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:36:36,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:36,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:36:36,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:36:36,105 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 86 [2023-12-09 15:36:36,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 591 transitions, 31941 flow. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:36,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:36,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 86 [2023-12-09 15:36:36,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:36,465 INFO L124 PetriNetUnfolderBase]: 244/1028 cut-off events. [2023-12-09 15:36:36,465 INFO L125 PetriNetUnfolderBase]: For 55269/56694 co-relation queries the response was YES. [2023-12-09 15:36:36,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21526 conditions, 1028 events. 244/1028 cut-off events. For 55269/56694 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 7989 event pairs, 3 based on Foata normal form. 14/990 useless extension candidates. Maximal degree in co-relation 17724. Up to 361 conditions per place. [2023-12-09 15:36:36,480 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 233 selfloop transitions, 81 changer transitions 204/566 dead transitions. [2023-12-09 15:36:36,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 566 transitions, 31310 flow [2023-12-09 15:36:36,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 15:36:36,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 15:36:36,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 555 transitions. [2023-12-09 15:36:36,481 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8066860465116279 [2023-12-09 15:36:36,481 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 555 transitions. [2023-12-09 15:36:36,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 555 transitions. [2023-12-09 15:36:36,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:36,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 555 transitions. [2023-12-09 15:36:36,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 69.375) internal successors, (555), 8 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:36,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 86.0) internal successors, (774), 9 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:36,483 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 86.0) internal successors, (774), 9 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:36,483 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 368 predicate places. [2023-12-09 15:36:36,483 INFO L500 AbstractCegarLoop]: Abstraction has has 444 places, 566 transitions, 31310 flow [2023-12-09 15:36:36,483 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:36,483 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:36,483 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:36,484 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-09 15:36:36,484 INFO L425 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:36,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:36,484 INFO L85 PathProgramCache]: Analyzing trace with hash 267773011, now seen corresponding path program 5 times [2023-12-09 15:36:36,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:36,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740198175] [2023-12-09 15:36:36,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:36,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:36,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:36,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:36,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740198175] [2023-12-09 15:36:36,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740198175] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:36,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:36:36,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:36:36,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349720943] [2023-12-09 15:36:36,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:36,513 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:36:36,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:36,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:36:36,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:36:36,514 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 86 [2023-12-09 15:36:36,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 566 transitions, 31310 flow. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:36,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:36,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 86 [2023-12-09 15:36:36,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:36,815 INFO L124 PetriNetUnfolderBase]: 237/1007 cut-off events. [2023-12-09 15:36:36,815 INFO L125 PetriNetUnfolderBase]: For 57620/59169 co-relation queries the response was YES. [2023-12-09 15:36:36,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21712 conditions, 1007 events. 237/1007 cut-off events. For 57620/59169 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7761 event pairs, 2 based on Foata normal form. 11/969 useless extension candidates. Maximal degree in co-relation 17859. Up to 351 conditions per place. [2023-12-09 15:36:36,829 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 247 selfloop transitions, 56 changer transitions 207/558 dead transitions. [2023-12-09 15:36:36,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 558 transitions, 31667 flow [2023-12-09 15:36:36,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 15:36:36,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 15:36:36,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 548 transitions. [2023-12-09 15:36:36,830 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7965116279069767 [2023-12-09 15:36:36,830 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 548 transitions. [2023-12-09 15:36:36,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 548 transitions. [2023-12-09 15:36:36,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:36,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 548 transitions. [2023-12-09 15:36:36,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 68.5) internal successors, (548), 8 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:36,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 86.0) internal successors, (774), 9 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:36,832 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 86.0) internal successors, (774), 9 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:36,832 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 375 predicate places. [2023-12-09 15:36:36,832 INFO L500 AbstractCegarLoop]: Abstraction has has 451 places, 558 transitions, 31667 flow [2023-12-09 15:36:36,832 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:36,832 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:36,832 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:36,833 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-09 15:36:36,833 INFO L425 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:36,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:36,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1561947113, now seen corresponding path program 6 times [2023-12-09 15:36:36,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:36,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308581014] [2023-12-09 15:36:36,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:36,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:36,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:36,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:36,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:36,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308581014] [2023-12-09 15:36:36,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308581014] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:36,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:36:36,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:36:36,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231633477] [2023-12-09 15:36:36,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:36,859 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:36:36,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:36,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:36:36,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:36:36,860 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 86 [2023-12-09 15:36:36,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 558 transitions, 31667 flow. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:36,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:36,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 86 [2023-12-09 15:36:36,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:37,171 INFO L124 PetriNetUnfolderBase]: 214/944 cut-off events. [2023-12-09 15:36:37,171 INFO L125 PetriNetUnfolderBase]: For 58224/59986 co-relation queries the response was YES. [2023-12-09 15:36:37,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20594 conditions, 944 events. 214/944 cut-off events. For 58224/59986 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7200 event pairs, 4 based on Foata normal form. 13/919 useless extension candidates. Maximal degree in co-relation 14518. Up to 310 conditions per place. [2023-12-09 15:36:37,184 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 189 selfloop transitions, 83 changer transitions 207/527 dead transitions. [2023-12-09 15:36:37,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 527 transitions, 30456 flow [2023-12-09 15:36:37,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 15:36:37,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 15:36:37,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 550 transitions. [2023-12-09 15:36:37,185 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7994186046511628 [2023-12-09 15:36:37,185 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 550 transitions. [2023-12-09 15:36:37,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 550 transitions. [2023-12-09 15:36:37,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:37,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 550 transitions. [2023-12-09 15:36:37,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 68.75) internal successors, (550), 8 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:37,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 86.0) internal successors, (774), 9 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:37,186 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 86.0) internal successors, (774), 9 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:37,187 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 382 predicate places. [2023-12-09 15:36:37,187 INFO L500 AbstractCegarLoop]: Abstraction has has 458 places, 527 transitions, 30456 flow [2023-12-09 15:36:37,187 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:37,187 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:37,187 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:37,187 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-09 15:36:37,187 INFO L425 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:37,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:37,188 INFO L85 PathProgramCache]: Analyzing trace with hash -2060121536, now seen corresponding path program 1 times [2023-12-09 15:36:37,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:37,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004755808] [2023-12-09 15:36:37,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:37,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:37,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:37,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:37,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:37,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004755808] [2023-12-09 15:36:37,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004755808] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:36:37,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707460402] [2023-12-09 15:36:37,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:37,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:36:37,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:36:37,393 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:36:37,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-09 15:36:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:37,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-09 15:36:37,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:36:37,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:37,699 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:36:38,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:38,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707460402] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:36:38,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:36:38,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2023-12-09 15:36:38,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630642299] [2023-12-09 15:36:38,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:36:38,188 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-09 15:36:38,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:38,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-09 15:36:38,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2023-12-09 15:36:38,190 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2023-12-09 15:36:38,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 527 transitions, 30456 flow. Second operand has 34 states, 34 states have (on average 45.94117647058823) internal successors, (1562), 34 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:38,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:38,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2023-12-09 15:36:38,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:40,405 INFO L124 PetriNetUnfolderBase]: 637/2119 cut-off events. [2023-12-09 15:36:40,405 INFO L125 PetriNetUnfolderBase]: For 163145/165913 co-relation queries the response was YES. [2023-12-09 15:36:40,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49586 conditions, 2119 events. 637/2119 cut-off events. For 163145/165913 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 17770 event pairs, 9 based on Foata normal form. 42/2053 useless extension candidates. Maximal degree in co-relation 35214. Up to 948 conditions per place. [2023-12-09 15:36:40,447 INFO L140 encePairwiseOnDemand]: 64/86 looper letters, 394 selfloop transitions, 458 changer transitions 258/1144 dead transitions. [2023-12-09 15:36:40,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 1144 transitions, 71365 flow [2023-12-09 15:36:40,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-12-09 15:36:40,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2023-12-09 15:36:40,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 3313 transitions. [2023-12-09 15:36:40,451 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5749739673724401 [2023-12-09 15:36:40,451 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 3313 transitions. [2023-12-09 15:36:40,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 3313 transitions. [2023-12-09 15:36:40,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:40,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 3313 transitions. [2023-12-09 15:36:40,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 49.44776119402985) internal successors, (3313), 67 states have internal predecessors, (3313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:40,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 86.0) internal successors, (5848), 68 states have internal predecessors, (5848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:40,460 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 86.0) internal successors, (5848), 68 states have internal predecessors, (5848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:40,461 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 448 predicate places. [2023-12-09 15:36:40,461 INFO L500 AbstractCegarLoop]: Abstraction has has 524 places, 1144 transitions, 71365 flow [2023-12-09 15:36:40,461 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 45.94117647058823) internal successors, (1562), 34 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:40,461 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:40,461 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:40,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-09 15:36:40,666 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-09 15:36:40,666 INFO L425 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:40,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:40,666 INFO L85 PathProgramCache]: Analyzing trace with hash 962328850, now seen corresponding path program 2 times [2023-12-09 15:36:40,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:40,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584690358] [2023-12-09 15:36:40,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:40,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:40,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:40,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:40,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:40,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584690358] [2023-12-09 15:36:40,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584690358] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:36:40,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592788197] [2023-12-09 15:36:40,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:36:40,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:36:40,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:36:40,865 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:36:40,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-09 15:36:40,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:36:40,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:36:40,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-09 15:36:40,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:36:41,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:41,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:36:41,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:41,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592788197] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:36:41,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:36:41,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2023-12-09 15:36:41,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107838720] [2023-12-09 15:36:41,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:36:41,751 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-09 15:36:41,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:41,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-09 15:36:41,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2023-12-09 15:36:41,753 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2023-12-09 15:36:41,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 1144 transitions, 71365 flow. Second operand has 34 states, 34 states have (on average 45.970588235294116) internal successors, (1563), 34 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:41,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:41,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2023-12-09 15:36:41,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:44,266 INFO L124 PetriNetUnfolderBase]: 684/2302 cut-off events. [2023-12-09 15:36:44,267 INFO L125 PetriNetUnfolderBase]: For 185290/188376 co-relation queries the response was YES. [2023-12-09 15:36:44,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55449 conditions, 2302 events. 684/2302 cut-off events. For 185290/188376 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 19977 event pairs, 18 based on Foata normal form. 61/2243 useless extension candidates. Maximal degree in co-relation 39719. Up to 1043 conditions per place. [2023-12-09 15:36:44,307 INFO L140 encePairwiseOnDemand]: 64/86 looper letters, 415 selfloop transitions, 490 changer transitions 306/1245 dead transitions. [2023-12-09 15:36:44,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 1245 transitions, 79986 flow [2023-12-09 15:36:44,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-12-09 15:36:44,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2023-12-09 15:36:44,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 3481 transitions. [2023-12-09 15:36:44,311 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5700949885358664 [2023-12-09 15:36:44,311 INFO L72 ComplementDD]: Start complementDD. Operand 71 states and 3481 transitions. [2023-12-09 15:36:44,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 3481 transitions. [2023-12-09 15:36:44,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:44,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 71 states and 3481 transitions. [2023-12-09 15:36:44,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 72 states, 71 states have (on average 49.028169014084504) internal successors, (3481), 71 states have internal predecessors, (3481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:44,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 72 states, 72 states have (on average 86.0) internal successors, (6192), 72 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:44,321 INFO L81 ComplementDD]: Finished complementDD. Result has 72 states, 72 states have (on average 86.0) internal successors, (6192), 72 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:44,321 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 518 predicate places. [2023-12-09 15:36:44,321 INFO L500 AbstractCegarLoop]: Abstraction has has 594 places, 1245 transitions, 79986 flow [2023-12-09 15:36:44,322 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 45.970588235294116) internal successors, (1563), 34 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:44,322 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:44,322 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:44,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-09 15:36:44,526 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:36:44,526 INFO L425 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:44,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:44,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1055438814, now seen corresponding path program 3 times [2023-12-09 15:36:44,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:44,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706529295] [2023-12-09 15:36:44,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:44,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:44,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:44,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:44,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706529295] [2023-12-09 15:36:44,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706529295] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:36:44,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512896915] [2023-12-09 15:36:44,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:36:44,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:36:44,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:36:44,680 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:36:44,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-09 15:36:44,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-09 15:36:44,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:36:44,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-09 15:36:44,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:36:44,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:44,956 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:36:45,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:45,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512896915] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:36:45,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:36:45,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2023-12-09 15:36:45,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581882160] [2023-12-09 15:36:45,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:36:45,453 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-09 15:36:45,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:45,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-09 15:36:45,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=983, Unknown=0, NotChecked=0, Total=1122 [2023-12-09 15:36:45,455 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2023-12-09 15:36:45,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 1245 transitions, 79986 flow. Second operand has 34 states, 34 states have (on average 45.911764705882355) internal successors, (1561), 34 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:45,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:45,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2023-12-09 15:36:45,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:48,010 INFO L124 PetriNetUnfolderBase]: 707/2431 cut-off events. [2023-12-09 15:36:48,010 INFO L125 PetriNetUnfolderBase]: For 206067/209693 co-relation queries the response was YES. [2023-12-09 15:36:48,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59700 conditions, 2431 events. 707/2431 cut-off events. For 206067/209693 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 21598 event pairs, 9 based on Foata normal form. 77/2386 useless extension candidates. Maximal degree in co-relation 39860. Up to 1077 conditions per place. [2023-12-09 15:36:48,044 INFO L140 encePairwiseOnDemand]: 64/86 looper letters, 427 selfloop transitions, 480 changer transitions 368/1309 dead transitions. [2023-12-09 15:36:48,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 661 places, 1309 transitions, 86562 flow [2023-12-09 15:36:48,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-12-09 15:36:48,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2023-12-09 15:36:48,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 3347 transitions. [2023-12-09 15:36:48,048 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5723324213406292 [2023-12-09 15:36:48,048 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 3347 transitions. [2023-12-09 15:36:48,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 3347 transitions. [2023-12-09 15:36:48,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:48,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 3347 transitions. [2023-12-09 15:36:48,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 49.220588235294116) internal successors, (3347), 68 states have internal predecessors, (3347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:48,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 86.0) internal successors, (5934), 69 states have internal predecessors, (5934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:48,060 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 86.0) internal successors, (5934), 69 states have internal predecessors, (5934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:48,060 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 585 predicate places. [2023-12-09 15:36:48,061 INFO L500 AbstractCegarLoop]: Abstraction has has 661 places, 1309 transitions, 86562 flow [2023-12-09 15:36:48,061 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 45.911764705882355) internal successors, (1561), 34 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:48,061 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:48,061 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:48,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-09 15:36:48,266 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:36:48,266 INFO L425 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:48,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:48,267 INFO L85 PathProgramCache]: Analyzing trace with hash -63857258, now seen corresponding path program 4 times [2023-12-09 15:36:48,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:48,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869341336] [2023-12-09 15:36:48,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:48,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:48,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:48,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:48,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869341336] [2023-12-09 15:36:48,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869341336] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:36:48,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249154532] [2023-12-09 15:36:48,434 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:36:48,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:36:48,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:36:48,435 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:36:48,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-09 15:36:48,547 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:36:48,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:36:48,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-09 15:36:48,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:36:48,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:48,817 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:36:49,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:49,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249154532] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:36:49,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:36:49,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2023-12-09 15:36:49,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967523245] [2023-12-09 15:36:49,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:36:49,079 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-09 15:36:49,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:49,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-09 15:36:49,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2023-12-09 15:36:49,080 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2023-12-09 15:36:49,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 661 places, 1309 transitions, 86562 flow. Second operand has 33 states, 33 states have (on average 46.06060606060606) internal successors, (1520), 33 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) [2023-12-09 15:36:49,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:49,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2023-12-09 15:36:49,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:51,312 INFO L124 PetriNetUnfolderBase]: 734/2552 cut-off events. [2023-12-09 15:36:51,313 INFO L125 PetriNetUnfolderBase]: For 222953/226815 co-relation queries the response was YES. [2023-12-09 15:36:51,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64133 conditions, 2552 events. 734/2552 cut-off events. For 222953/226815 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 23187 event pairs, 10 based on Foata normal form. 36/2460 useless extension candidates. Maximal degree in co-relation 42560. Up to 1117 conditions per place. [2023-12-09 15:36:51,356 INFO L140 encePairwiseOnDemand]: 66/86 looper letters, 631 selfloop transitions, 302 changer transitions 400/1367 dead transitions. [2023-12-09 15:36:51,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 699 places, 1367 transitions, 93152 flow [2023-12-09 15:36:51,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-09 15:36:51,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-12-09 15:36:51,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1979 transitions. [2023-12-09 15:36:51,359 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5900417412045319 [2023-12-09 15:36:51,359 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 1979 transitions. [2023-12-09 15:36:51,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 1979 transitions. [2023-12-09 15:36:51,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:51,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 1979 transitions. [2023-12-09 15:36:51,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 50.743589743589745) internal successors, (1979), 39 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:51,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 86.0) internal successors, (3440), 40 states have internal predecessors, (3440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:51,366 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 86.0) internal successors, (3440), 40 states have internal predecessors, (3440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:51,366 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 623 predicate places. [2023-12-09 15:36:51,366 INFO L500 AbstractCegarLoop]: Abstraction has has 699 places, 1367 transitions, 93152 flow [2023-12-09 15:36:51,367 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 46.06060606060606) internal successors, (1520), 33 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) [2023-12-09 15:36:51,367 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:51,367 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:51,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-09 15:36:51,571 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-09 15:36:51,572 INFO L425 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:51,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:51,572 INFO L85 PathProgramCache]: Analyzing trace with hash -2076084770, now seen corresponding path program 5 times [2023-12-09 15:36:51,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:51,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282006936] [2023-12-09 15:36:51,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:51,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:51,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:51,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:51,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282006936] [2023-12-09 15:36:51,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282006936] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:36:51,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606492000] [2023-12-09 15:36:51,748 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-09 15:36:51,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:36:51,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:36:51,765 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:36:51,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-09 15:36:51,823 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:36:51,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:36:51,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-09 15:36:51,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:36:52,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:52,036 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-09 15:36:52,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606492000] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:52,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-09 15:36:52,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [16] total 25 [2023-12-09 15:36:52,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442676524] [2023-12-09 15:36:52,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:52,043 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-09 15:36:52,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:52,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-09 15:36:52,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2023-12-09 15:36:52,044 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2023-12-09 15:36:52,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 699 places, 1367 transitions, 93152 flow. Second operand has 15 states, 15 states have (on average 48.2) internal successors, (723), 15 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:52,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:52,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2023-12-09 15:36:52,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:53,671 INFO L124 PetriNetUnfolderBase]: 745/2539 cut-off events. [2023-12-09 15:36:53,671 INFO L125 PetriNetUnfolderBase]: For 233779/237888 co-relation queries the response was YES. [2023-12-09 15:36:53,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66938 conditions, 2539 events. 745/2539 cut-off events. For 233779/237888 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 22945 event pairs, 14 based on Foata normal form. 23/2425 useless extension candidates. Maximal degree in co-relation 59921. Up to 1127 conditions per place. [2023-12-09 15:36:53,714 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 606 selfloop transitions, 361 changer transitions 443/1446 dead transitions. [2023-12-09 15:36:53,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 717 places, 1446 transitions, 101353 flow [2023-12-09 15:36:53,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-09 15:36:53,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-12-09 15:36:53,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 999 transitions. [2023-12-09 15:36:53,716 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6113831089351285 [2023-12-09 15:36:53,716 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 999 transitions. [2023-12-09 15:36:53,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 999 transitions. [2023-12-09 15:36:53,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:53,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 999 transitions. [2023-12-09 15:36:53,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 52.578947368421055) internal successors, (999), 19 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:53,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 86.0) internal successors, (1720), 20 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:53,718 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 86.0) internal successors, (1720), 20 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:53,718 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 641 predicate places. [2023-12-09 15:36:53,719 INFO L500 AbstractCegarLoop]: Abstraction has has 717 places, 1446 transitions, 101353 flow [2023-12-09 15:36:53,719 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 48.2) internal successors, (723), 15 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:53,719 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:53,719 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:53,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-09 15:36:53,923 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-09 15:36:53,923 INFO L425 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:53,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:53,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1113342440, now seen corresponding path program 6 times [2023-12-09 15:36:53,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:53,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489851418] [2023-12-09 15:36:53,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:53,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:54,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:54,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:54,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489851418] [2023-12-09 15:36:54,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489851418] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:36:54,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949715833] [2023-12-09 15:36:54,080 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-09 15:36:54,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:36:54,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:36:54,081 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:36:54,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-09 15:36:54,140 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-12-09 15:36:54,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:36:54,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-09 15:36:54,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:36:54,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:54,337 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:36:54,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:54,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949715833] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:36:54,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:36:54,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2023-12-09 15:36:54,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942316111] [2023-12-09 15:36:54,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:36:54,671 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-09 15:36:54,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:54,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-09 15:36:54,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2023-12-09 15:36:54,673 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2023-12-09 15:36:54,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 717 places, 1446 transitions, 101353 flow. Second operand has 34 states, 34 states have (on average 45.85294117647059) internal successors, (1559), 34 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:54,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:54,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2023-12-09 15:36:54,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:37:02,901 INFO L124 PetriNetUnfolderBase]: 1245/3852 cut-off events. [2023-12-09 15:37:02,901 INFO L125 PetriNetUnfolderBase]: For 352492/358325 co-relation queries the response was YES. [2023-12-09 15:37:02,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107302 conditions, 3852 events. 1245/3852 cut-off events. For 352492/358325 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 36357 event pairs, 20 based on Foata normal form. 83/3692 useless extension candidates. Maximal degree in co-relation 85222. Up to 1811 conditions per place. [2023-12-09 15:37:02,975 INFO L140 encePairwiseOnDemand]: 61/86 looper letters, 574 selfloop transitions, 1140 changer transitions 573/2321 dead transitions. [2023-12-09 15:37:02,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 943 places, 2321 transitions, 168004 flow [2023-12-09 15:37:02,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2023-12-09 15:37:02,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2023-12-09 15:37:02,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 10809 transitions. [2023-12-09 15:37:02,989 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5536830242802991 [2023-12-09 15:37:02,989 INFO L72 ComplementDD]: Start complementDD. Operand 227 states and 10809 transitions. [2023-12-09 15:37:02,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 227 states and 10809 transitions. [2023-12-09 15:37:02,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:37:02,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 227 states and 10809 transitions. [2023-12-09 15:37:03,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 228 states, 227 states have (on average 47.61674008810573) internal successors, (10809), 227 states have internal predecessors, (10809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:37:03,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 228 states, 228 states have (on average 86.0) internal successors, (19608), 228 states have internal predecessors, (19608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:37:03,016 INFO L81 ComplementDD]: Finished complementDD. Result has 228 states, 228 states have (on average 86.0) internal successors, (19608), 228 states have internal predecessors, (19608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:37:03,017 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 867 predicate places. [2023-12-09 15:37:03,017 INFO L500 AbstractCegarLoop]: Abstraction has has 943 places, 2321 transitions, 168004 flow [2023-12-09 15:37:03,017 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 45.85294117647059) internal successors, (1559), 34 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:37:03,017 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:37:03,017 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:37:03,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-09 15:37:03,222 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:37:03,222 INFO L425 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:37:03,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:37:03,223 INFO L85 PathProgramCache]: Analyzing trace with hash 69400298, now seen corresponding path program 7 times [2023-12-09 15:37:03,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:37:03,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40794005] [2023-12-09 15:37:03,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:37:03,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:37:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:37:03,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:37:03,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:37:03,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40794005] [2023-12-09 15:37:03,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40794005] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:37:03,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389397233] [2023-12-09 15:37:03,384 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-09 15:37:03,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:37:03,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:37:03,401 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:37:03,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-09 15:37:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:37:03,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-09 15:37:03,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:37:03,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:37:03,707 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:37:04,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:37:04,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389397233] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:37:04,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:37:04,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2023-12-09 15:37:04,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468489111] [2023-12-09 15:37:04,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:37:04,069 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-09 15:37:04,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:37:04,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-09 15:37:04,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=972, Unknown=0, NotChecked=0, Total=1122 [2023-12-09 15:37:04,070 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2023-12-09 15:37:04,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 943 places, 2321 transitions, 168004 flow. Second operand has 34 states, 34 states have (on average 45.911764705882355) internal successors, (1561), 34 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:37:04,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:37:04,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2023-12-09 15:37:04,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:37:12,104 INFO L124 PetriNetUnfolderBase]: 1248/3935 cut-off events. [2023-12-09 15:37:12,105 INFO L125 PetriNetUnfolderBase]: For 383017/389063 co-relation queries the response was YES. [2023-12-09 15:37:12,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111982 conditions, 3935 events. 1248/3935 cut-off events. For 383017/389063 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 37681 event pairs, 21 based on Foata normal form. 94/3784 useless extension candidates. Maximal degree in co-relation 88582. Up to 1823 conditions per place. [2023-12-09 15:37:12,172 INFO L140 encePairwiseOnDemand]: 61/86 looper letters, 638 selfloop transitions, 1086 changer transitions 603/2361 dead transitions. [2023-12-09 15:37:12,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1140 places, 2361 transitions, 175358 flow [2023-12-09 15:37:12,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2023-12-09 15:37:12,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2023-12-09 15:37:12,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 9475 transitions. [2023-12-09 15:37:12,181 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5564364575992483 [2023-12-09 15:37:12,181 INFO L72 ComplementDD]: Start complementDD. Operand 198 states and 9475 transitions. [2023-12-09 15:37:12,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 198 states and 9475 transitions. [2023-12-09 15:37:12,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:37:12,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 198 states and 9475 transitions. [2023-12-09 15:37:12,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 199 states, 198 states have (on average 47.85353535353536) internal successors, (9475), 198 states have internal predecessors, (9475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:37:12,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 199 states, 199 states have (on average 86.0) internal successors, (17114), 199 states have internal predecessors, (17114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:37:12,201 INFO L81 ComplementDD]: Finished complementDD. Result has 199 states, 199 states have (on average 86.0) internal successors, (17114), 199 states have internal predecessors, (17114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:37:12,202 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 1064 predicate places. [2023-12-09 15:37:12,202 INFO L500 AbstractCegarLoop]: Abstraction has has 1140 places, 2361 transitions, 175358 flow [2023-12-09 15:37:12,203 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 45.911764705882355) internal successors, (1561), 34 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:37:12,203 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:37:12,203 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:37:12,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-09 15:37:12,408 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-09 15:37:12,408 INFO L425 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:37:12,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:37:12,409 INFO L85 PathProgramCache]: Analyzing trace with hash -926873758, now seen corresponding path program 8 times [2023-12-09 15:37:12,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:37:12,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109830463] [2023-12-09 15:37:12,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:37:12,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:37:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:37:12,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:37:12,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:37:12,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109830463] [2023-12-09 15:37:12,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109830463] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:37:12,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245939357] [2023-12-09 15:37:12,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:37:12,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:37:12,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:37:12,574 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:37:12,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-09 15:37:12,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:37:12,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:37:12,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-09 15:37:12,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:37:12,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:37:12,834 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:37:13,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:37:13,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245939357] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:37:13,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:37:13,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2023-12-09 15:37:13,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7213371] [2023-12-09 15:37:13,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:37:13,215 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-09 15:37:13,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:37:13,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-09 15:37:13,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=971, Unknown=0, NotChecked=0, Total=1122 [2023-12-09 15:37:13,216 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2023-12-09 15:37:13,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1140 places, 2361 transitions, 175358 flow. Second operand has 34 states, 34 states have (on average 45.85294117647059) internal successors, (1559), 34 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:37:13,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:37:13,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2023-12-09 15:37:13,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:37:20,681 INFO L124 PetriNetUnfolderBase]: 1240/4044 cut-off events. [2023-12-09 15:37:20,681 INFO L125 PetriNetUnfolderBase]: For 402217/407759 co-relation queries the response was YES. [2023-12-09 15:37:20,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116754 conditions, 4044 events. 1240/4044 cut-off events. For 402217/407759 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 39346 event pairs, 13 based on Foata normal form. 89/3894 useless extension candidates. Maximal degree in co-relation 104104. Up to 1823 conditions per place. [2023-12-09 15:37:20,749 INFO L140 encePairwiseOnDemand]: 61/86 looper letters, 646 selfloop transitions, 1074 changer transitions 659/2413 dead transitions. [2023-12-09 15:37:20,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1338 places, 2413 transitions, 183484 flow [2023-12-09 15:37:20,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2023-12-09 15:37:20,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2023-12-09 15:37:20,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 9525 transitions. [2023-12-09 15:37:20,755 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5565618791632582 [2023-12-09 15:37:20,755 INFO L72 ComplementDD]: Start complementDD. Operand 199 states and 9525 transitions. [2023-12-09 15:37:20,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 199 states and 9525 transitions. [2023-12-09 15:37:20,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:37:20,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 199 states and 9525 transitions. [2023-12-09 15:37:20,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 200 states, 199 states have (on average 47.8643216080402) internal successors, (9525), 199 states have internal predecessors, (9525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:37:20,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 200 states, 200 states have (on average 86.0) internal successors, (17200), 200 states have internal predecessors, (17200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:37:20,775 INFO L81 ComplementDD]: Finished complementDD. Result has 200 states, 200 states have (on average 86.0) internal successors, (17200), 200 states have internal predecessors, (17200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:37:20,776 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 1262 predicate places. [2023-12-09 15:37:20,776 INFO L500 AbstractCegarLoop]: Abstraction has has 1338 places, 2413 transitions, 183484 flow [2023-12-09 15:37:20,776 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 45.85294117647059) internal successors, (1559), 34 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:37:20,776 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:37:20,776 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:37:20,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-09 15:37:20,981 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-09 15:37:20,981 INFO L425 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:37:20,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:37:20,981 INFO L85 PathProgramCache]: Analyzing trace with hash 2141153750, now seen corresponding path program 9 times [2023-12-09 15:37:20,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:37:20,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137497951] [2023-12-09 15:37:20,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:37:20,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:37:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:37:21,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:37:21,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:37:21,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137497951] [2023-12-09 15:37:21,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137497951] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:37:21,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571179326] [2023-12-09 15:37:21,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:37:21,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:37:21,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:37:21,153 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:37:21,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-09 15:37:21,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-09 15:37:21,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:37:21,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-09 15:37:21,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:37:21,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:37:21,405 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:37:21,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:37:21,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571179326] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:37:21,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:37:21,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2023-12-09 15:37:21,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980246040] [2023-12-09 15:37:21,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:37:21,676 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-09 15:37:21,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:37:21,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-09 15:37:21,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=935, Unknown=0, NotChecked=0, Total=1056 [2023-12-09 15:37:21,678 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2023-12-09 15:37:21,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1338 places, 2413 transitions, 183484 flow. Second operand has 33 states, 33 states have (on average 45.90909090909091) internal successors, (1515), 33 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) [2023-12-09 15:37:21,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:37:21,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2023-12-09 15:37:21,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:37:26,216 INFO L124 PetriNetUnfolderBase]: 1417/4677 cut-off events. [2023-12-09 15:37:26,216 INFO L125 PetriNetUnfolderBase]: For 496897/504190 co-relation queries the response was YES. [2023-12-09 15:37:26,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136846 conditions, 4677 events. 1417/4677 cut-off events. For 496897/504190 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 47222 event pairs, 21 based on Foata normal form. 107/4516 useless extension candidates. Maximal degree in co-relation 92864. Up to 2162 conditions per place. [2023-12-09 15:37:26,315 INFO L140 encePairwiseOnDemand]: 66/86 looper letters, 812 selfloop transitions, 1151 changer transitions 736/2733 dead transitions. [2023-12-09 15:37:26,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1397 places, 2733 transitions, 213159 flow [2023-12-09 15:37:26,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-12-09 15:37:26,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2023-12-09 15:37:26,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 2925 transitions. [2023-12-09 15:37:26,318 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5668604651162791 [2023-12-09 15:37:26,318 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 2925 transitions. [2023-12-09 15:37:26,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 2925 transitions. [2023-12-09 15:37:26,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:37:26,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 2925 transitions. [2023-12-09 15:37:26,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 48.75) internal successors, (2925), 60 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:37:26,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 86.0) internal successors, (5246), 61 states have internal predecessors, (5246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:37:26,323 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 86.0) internal successors, (5246), 61 states have internal predecessors, (5246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:37:26,323 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 1321 predicate places. [2023-12-09 15:37:26,323 INFO L500 AbstractCegarLoop]: Abstraction has has 1397 places, 2733 transitions, 213159 flow [2023-12-09 15:37:26,324 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 45.90909090909091) internal successors, (1515), 33 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) [2023-12-09 15:37:26,324 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:37:26,324 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:37:26,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-09 15:37:26,528 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-12-09 15:37:26,528 INFO L425 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:37:26,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:37:26,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1902099210, now seen corresponding path program 10 times [2023-12-09 15:37:26,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:37:26,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028574608] [2023-12-09 15:37:26,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:37:26,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:37:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:37:26,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:37:26,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:37:26,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028574608] [2023-12-09 15:37:26,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028574608] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:37:26,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664313232] [2023-12-09 15:37:26,928 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:37:26,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:37:26,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:37:26,929 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:37:26,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-09 15:37:26,988 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:37:26,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:37:26,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-09 15:37:26,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:37:27,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:37:27,336 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:37:27,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:37:27,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664313232] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:37:27,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:37:27,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2023-12-09 15:37:27,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294593421] [2023-12-09 15:37:27,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:37:27,588 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-09 15:37:27,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:37:27,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-09 15:37:27,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2023-12-09 15:37:27,589 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2023-12-09 15:37:27,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1397 places, 2733 transitions, 213159 flow. Second operand has 33 states, 33 states have (on average 46.06060606060606) internal successors, (1520), 33 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) [2023-12-09 15:37:27,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:37:27,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2023-12-09 15:37:27,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:37:34,527 INFO L124 PetriNetUnfolderBase]: 1557/5009 cut-off events. [2023-12-09 15:37:34,527 INFO L125 PetriNetUnfolderBase]: For 530612/537748 co-relation queries the response was YES. [2023-12-09 15:37:34,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152053 conditions, 5009 events. 1557/5009 cut-off events. For 530612/537748 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 51042 event pairs, 24 based on Foata normal form. 40/4756 useless extension candidates. Maximal degree in co-relation 137657. Up to 2356 conditions per place. [2023-12-09 15:37:34,714 INFO L140 encePairwiseOnDemand]: 64/86 looper letters, 1181 selfloop transitions, 954 changer transitions 835/3004 dead transitions. [2023-12-09 15:37:34,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1501 places, 3004 transitions, 239286 flow [2023-12-09 15:37:34,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2023-12-09 15:37:34,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2023-12-09 15:37:34,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 5071 transitions. [2023-12-09 15:37:34,742 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5615725359911407 [2023-12-09 15:37:34,742 INFO L72 ComplementDD]: Start complementDD. Operand 105 states and 5071 transitions. [2023-12-09 15:37:34,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 105 states and 5071 transitions. [2023-12-09 15:37:34,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:37:34,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 105 states and 5071 transitions. [2023-12-09 15:37:34,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 106 states, 105 states have (on average 48.2952380952381) internal successors, (5071), 105 states have internal predecessors, (5071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:37:34,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 106 states, 106 states have (on average 86.0) internal successors, (9116), 106 states have internal predecessors, (9116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:37:34,755 INFO L81 ComplementDD]: Finished complementDD. Result has 106 states, 106 states have (on average 86.0) internal successors, (9116), 106 states have internal predecessors, (9116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:37:34,756 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 1425 predicate places. [2023-12-09 15:37:34,756 INFO L500 AbstractCegarLoop]: Abstraction has has 1501 places, 3004 transitions, 239286 flow [2023-12-09 15:37:34,756 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 46.06060606060606) internal successors, (1520), 33 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) [2023-12-09 15:37:34,756 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:37:34,756 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:37:34,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-09 15:37:34,972 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-12-09 15:37:34,972 INFO L425 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:37:34,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:37:34,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1849117608, now seen corresponding path program 11 times [2023-12-09 15:37:34,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:37:34,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296327672] [2023-12-09 15:37:34,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:37:34,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:37:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:37:35,284 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:37:35,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:37:35,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296327672] [2023-12-09 15:37:35,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296327672] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:37:35,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106546774] [2023-12-09 15:37:35,285 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-09 15:37:35,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:37:35,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:37:35,297 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:37:35,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-09 15:37:35,374 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-09 15:37:35,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:37:35,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-09 15:37:35,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:37:35,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:37:35,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:37:35,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:37:35,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106546774] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:37:35,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:37:35,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2023-12-09 15:37:35,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113412570] [2023-12-09 15:37:35,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:37:35,856 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-09 15:37:35,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:37:35,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-09 15:37:35,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=919, Unknown=0, NotChecked=0, Total=1056 [2023-12-09 15:37:35,858 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2023-12-09 15:37:35,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1501 places, 3004 transitions, 239286 flow. Second operand has 33 states, 33 states have (on average 45.84848484848485) internal successors, (1513), 33 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:37:35,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:37:35,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2023-12-09 15:37:35,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:37:42,232 INFO L124 PetriNetUnfolderBase]: 1647/5173 cut-off events. [2023-12-09 15:37:42,232 INFO L125 PetriNetUnfolderBase]: For 565997/574666 co-relation queries the response was YES. [2023-12-09 15:37:42,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162846 conditions, 5173 events. 1647/5173 cut-off events. For 565997/574666 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 52357 event pairs, 30 based on Foata normal form. 130/4968 useless extension candidates. Maximal degree in co-relation 146333. Up to 2415 conditions per place. [2023-12-09 15:37:42,331 INFO L140 encePairwiseOnDemand]: 65/86 looper letters, 731 selfloop transitions, 1639 changer transitions 845/3249 dead transitions. [2023-12-09 15:37:42,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1587 places, 3249 transitions, 264328 flow [2023-12-09 15:37:42,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2023-12-09 15:37:42,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2023-12-09 15:37:42,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 4188 transitions. [2023-12-09 15:37:42,334 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5597433841218925 [2023-12-09 15:37:42,334 INFO L72 ComplementDD]: Start complementDD. Operand 87 states and 4188 transitions. [2023-12-09 15:37:42,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 4188 transitions. [2023-12-09 15:37:42,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:37:42,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 87 states and 4188 transitions. [2023-12-09 15:37:42,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 88 states, 87 states have (on average 48.13793103448276) internal successors, (4188), 87 states have internal predecessors, (4188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:37:42,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 88 states, 88 states have (on average 86.0) internal successors, (7568), 88 states have internal predecessors, (7568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:37:42,341 INFO L81 ComplementDD]: Finished complementDD. Result has 88 states, 88 states have (on average 86.0) internal successors, (7568), 88 states have internal predecessors, (7568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:37:42,341 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 1511 predicate places. [2023-12-09 15:37:42,341 INFO L500 AbstractCegarLoop]: Abstraction has has 1587 places, 3249 transitions, 264328 flow [2023-12-09 15:37:42,341 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 45.84848484848485) internal successors, (1513), 33 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:37:42,342 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:37:42,342 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:37:42,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-09 15:37:42,545 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-12-09 15:37:42,546 INFO L425 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:37:42,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:37:42,546 INFO L85 PathProgramCache]: Analyzing trace with hash 308538782, now seen corresponding path program 12 times [2023-12-09 15:37:42,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:37:42,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534369625] [2023-12-09 15:37:42,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:37:42,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:37:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:37:42,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:37:42,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:37:42,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534369625] [2023-12-09 15:37:42,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534369625] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:37:42,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73121215] [2023-12-09 15:37:42,699 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-09 15:37:42,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:37:42,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:37:42,702 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:37:42,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-09 15:37:42,770 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-12-09 15:37:42,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:37:42,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-09 15:37:42,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:37:42,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:37:42,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:37:43,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:37:43,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73121215] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:37:43,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:37:43,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2023-12-09 15:37:43,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042634274] [2023-12-09 15:37:43,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:37:43,158 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-09 15:37:43,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:37:43,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-09 15:37:43,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2023-12-09 15:37:43,159 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2023-12-09 15:37:43,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1587 places, 3249 transitions, 264328 flow. Second operand has 33 states, 33 states have (on average 45.90909090909091) internal successors, (1515), 33 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) [2023-12-09 15:37:43,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:37:43,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2023-12-09 15:37:43,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:37:50,053 INFO L124 PetriNetUnfolderBase]: 1707/5489 cut-off events. [2023-12-09 15:37:50,053 INFO L125 PetriNetUnfolderBase]: For 621926/630787 co-relation queries the response was YES. [2023-12-09 15:37:50,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175281 conditions, 5489 events. 1707/5489 cut-off events. For 621926/630787 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 56945 event pairs, 14 based on Foata normal form. 121/5274 useless extension candidates. Maximal degree in co-relation 117836. Up to 2531 conditions per place. [2023-12-09 15:37:50,171 INFO L140 encePairwiseOnDemand]: 66/86 looper letters, 911 selfloop transitions, 1389 changer transitions 1066/3400 dead transitions. [2023-12-09 15:37:50,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1643 places, 3400 transitions, 283467 flow [2023-12-09 15:37:50,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-09 15:37:50,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2023-12-09 15:37:50,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 2786 transitions. [2023-12-09 15:37:50,174 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5683394532843737 [2023-12-09 15:37:50,174 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 2786 transitions. [2023-12-09 15:37:50,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 2786 transitions. [2023-12-09 15:37:50,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:37:50,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 2786 transitions. [2023-12-09 15:37:50,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 48.87719298245614) internal successors, (2786), 57 states have internal predecessors, (2786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:37:50,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 86.0) internal successors, (4988), 58 states have internal predecessors, (4988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:37:50,179 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 86.0) internal successors, (4988), 58 states have internal predecessors, (4988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:37:50,179 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 1567 predicate places. [2023-12-09 15:37:50,179 INFO L500 AbstractCegarLoop]: Abstraction has has 1643 places, 3400 transitions, 283467 flow [2023-12-09 15:37:50,179 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 45.90909090909091) internal successors, (1515), 33 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) [2023-12-09 15:37:50,179 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:37:50,180 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:37:50,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-09 15:37:50,384 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-12-09 15:37:50,384 INFO L425 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:37:50,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:37:50,385 INFO L85 PathProgramCache]: Analyzing trace with hash 487581282, now seen corresponding path program 13 times [2023-12-09 15:37:50,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:37:50,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172353884] [2023-12-09 15:37:50,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:37:50,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:37:50,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:37:50,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:37:50,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:37:50,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172353884] [2023-12-09 15:37:50,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172353884] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:37:50,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826595510] [2023-12-09 15:37:50,640 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-09 15:37:50,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:37:50,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:37:50,642 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:37:50,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-09 15:37:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:37:50,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-09 15:37:50,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:37:50,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:37:50,908 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:37:51,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:37:51,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826595510] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:37:51,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:37:51,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2023-12-09 15:37:51,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755202502] [2023-12-09 15:37:51,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:37:51,225 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-09 15:37:51,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:37:51,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-09 15:37:51,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=974, Unknown=0, NotChecked=0, Total=1122 [2023-12-09 15:37:51,226 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2023-12-09 15:37:51,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1643 places, 3400 transitions, 283467 flow. Second operand has 34 states, 34 states have (on average 45.94117647058823) internal successors, (1562), 34 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:37:51,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:37:51,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2023-12-09 15:37:51,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:37:58,396 INFO L124 PetriNetUnfolderBase]: 1712/5533 cut-off events. [2023-12-09 15:37:58,396 INFO L125 PetriNetUnfolderBase]: For 664596/674610 co-relation queries the response was YES. [2023-12-09 15:37:58,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181256 conditions, 5533 events. 1712/5533 cut-off events. For 664596/674610 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 57579 event pairs, 18 based on Foata normal form. 135/5327 useless extension candidates. Maximal degree in co-relation 121506. Up to 2561 conditions per place. [2023-12-09 15:37:58,498 INFO L140 encePairwiseOnDemand]: 63/86 looper letters, 651 selfloop transitions, 1648 changer transitions 1107/3440 dead transitions. [2023-12-09 15:37:58,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1705 places, 3440 transitions, 293501 flow [2023-12-09 15:37:58,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-09 15:37:58,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2023-12-09 15:37:58,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 3031 transitions. [2023-12-09 15:37:58,500 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5594315245478036 [2023-12-09 15:37:58,500 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 3031 transitions. [2023-12-09 15:37:58,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 3031 transitions. [2023-12-09 15:37:58,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:37:58,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 3031 transitions. [2023-12-09 15:37:58,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 48.111111111111114) internal successors, (3031), 63 states have internal predecessors, (3031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:37:58,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 86.0) internal successors, (5504), 64 states have internal predecessors, (5504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:37:58,505 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 86.0) internal successors, (5504), 64 states have internal predecessors, (5504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:37:58,506 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 1629 predicate places. [2023-12-09 15:37:58,506 INFO L500 AbstractCegarLoop]: Abstraction has has 1705 places, 3440 transitions, 293501 flow [2023-12-09 15:37:58,506 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 45.94117647058823) internal successors, (1562), 34 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:37:58,506 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:37:58,506 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:37:58,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-09 15:37:58,710 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:37:58,710 INFO L425 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:37:58,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:37:58,711 INFO L85 PathProgramCache]: Analyzing trace with hash -540564684, now seen corresponding path program 14 times [2023-12-09 15:37:58,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:37:58,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781371307] [2023-12-09 15:37:58,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:37:58,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:37:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:37:58,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:37:58,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:37:58,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781371307] [2023-12-09 15:37:58,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781371307] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:37:58,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768951913] [2023-12-09 15:37:58,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:37:58,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:37:58,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:37:58,864 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:37:58,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-09 15:37:58,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:37:58,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:37:58,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-09 15:37:58,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:37:59,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:37:59,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:37:59,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:37:59,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768951913] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:37:59,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:37:59,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2023-12-09 15:37:59,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462705483] [2023-12-09 15:37:59,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:37:59,466 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-09 15:37:59,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:37:59,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-09 15:37:59,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=973, Unknown=0, NotChecked=0, Total=1122 [2023-12-09 15:37:59,467 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2023-12-09 15:37:59,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1705 places, 3440 transitions, 293501 flow. Second operand has 34 states, 34 states have (on average 45.911764705882355) internal successors, (1561), 34 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:37:59,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:37:59,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2023-12-09 15:37:59,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:38:07,334 INFO L124 PetriNetUnfolderBase]: 1711/5566 cut-off events. [2023-12-09 15:38:07,334 INFO L125 PetriNetUnfolderBase]: For 677259/686553 co-relation queries the response was YES. [2023-12-09 15:38:07,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185732 conditions, 5566 events. 1711/5566 cut-off events. For 677259/686553 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 58328 event pairs, 15 based on Foata normal form. 100/5329 useless extension candidates. Maximal degree in co-relation 167767. Up to 2563 conditions per place. [2023-12-09 15:38:07,440 INFO L140 encePairwiseOnDemand]: 63/86 looper letters, 654 selfloop transitions, 1629 changer transitions 1129/3446 dead transitions. [2023-12-09 15:38:07,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1765 places, 3446 transitions, 300787 flow [2023-12-09 15:38:07,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-09 15:38:07,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2023-12-09 15:38:07,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 2934 transitions. [2023-12-09 15:38:07,442 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5592832634388105 [2023-12-09 15:38:07,442 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 2934 transitions. [2023-12-09 15:38:07,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 2934 transitions. [2023-12-09 15:38:07,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:38:07,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 2934 transitions. [2023-12-09 15:38:07,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 62 states, 61 states have (on average 48.09836065573771) internal successors, (2934), 61 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:07,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 62 states, 62 states have (on average 86.0) internal successors, (5332), 62 states have internal predecessors, (5332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:07,447 INFO L81 ComplementDD]: Finished complementDD. Result has 62 states, 62 states have (on average 86.0) internal successors, (5332), 62 states have internal predecessors, (5332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:07,447 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 1689 predicate places. [2023-12-09 15:38:07,447 INFO L500 AbstractCegarLoop]: Abstraction has has 1765 places, 3446 transitions, 300787 flow [2023-12-09 15:38:07,447 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 45.911764705882355) internal successors, (1561), 34 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:07,447 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:38:07,448 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:38:07,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-09 15:38:07,652 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:38:07,652 INFO L425 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:38:07,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:38:07,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1955023310, now seen corresponding path program 15 times [2023-12-09 15:38:07,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:38:07,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988302272] [2023-12-09 15:38:07,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:38:07,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:38:07,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:38:07,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:38:07,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:38:07,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988302272] [2023-12-09 15:38:07,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988302272] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:38:07,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824439640] [2023-12-09 15:38:07,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:38:07,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:38:07,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:38:07,797 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:38:07,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-09 15:38:07,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-09 15:38:07,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:38:07,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-09 15:38:07,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:38:08,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:38:08,048 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:38:08,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:38:08,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824439640] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:38:08,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:38:08,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2023-12-09 15:38:08,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117802818] [2023-12-09 15:38:08,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:38:08,340 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-09 15:38:08,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:38:08,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-09 15:38:08,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=995, Unknown=0, NotChecked=0, Total=1122 [2023-12-09 15:38:08,342 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2023-12-09 15:38:08,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1765 places, 3446 transitions, 300787 flow. Second operand has 34 states, 34 states have (on average 45.794117647058826) internal successors, (1557), 34 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:08,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:38:08,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2023-12-09 15:38:08,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:38:17,245 INFO L124 PetriNetUnfolderBase]: 1923/5992 cut-off events. [2023-12-09 15:38:17,245 INFO L125 PetriNetUnfolderBase]: For 725548/735737 co-relation queries the response was YES. [2023-12-09 15:38:17,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208272 conditions, 5992 events. 1923/5992 cut-off events. For 725548/735737 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 62044 event pairs, 15 based on Foata normal form. 99/5722 useless extension candidates. Maximal degree in co-relation 174062. Up to 2856 conditions per place. [2023-12-09 15:38:17,372 INFO L140 encePairwiseOnDemand]: 64/86 looper letters, 1235 selfloop transitions, 1403 changer transitions 1174/3846 dead transitions. [2023-12-09 15:38:17,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1819 places, 3846 transitions, 343873 flow [2023-12-09 15:38:17,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-09 15:38:17,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2023-12-09 15:38:17,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 2669 transitions. [2023-12-09 15:38:17,374 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5642706131078224 [2023-12-09 15:38:17,374 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 2669 transitions. [2023-12-09 15:38:17,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 2669 transitions. [2023-12-09 15:38:17,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:38:17,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 2669 transitions. [2023-12-09 15:38:17,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 48.527272727272724) internal successors, (2669), 55 states have internal predecessors, (2669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:17,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 86.0) internal successors, (4816), 56 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:17,378 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 86.0) internal successors, (4816), 56 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:17,379 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 1743 predicate places. [2023-12-09 15:38:17,379 INFO L500 AbstractCegarLoop]: Abstraction has has 1819 places, 3846 transitions, 343873 flow [2023-12-09 15:38:17,379 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 45.794117647058826) internal successors, (1557), 34 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:17,379 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:38:17,379 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:38:17,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-09 15:38:17,587 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-12-09 15:38:17,587 INFO L425 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:38:17,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:38:17,589 INFO L85 PathProgramCache]: Analyzing trace with hash -962655666, now seen corresponding path program 16 times [2023-12-09 15:38:17,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:38:17,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117959039] [2023-12-09 15:38:17,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:38:17,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:38:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:38:17,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:38:17,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:38:17,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117959039] [2023-12-09 15:38:17,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117959039] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:38:17,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048853002] [2023-12-09 15:38:17,738 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:38:17,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:38:17,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:38:17,739 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:38:17,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-09 15:38:17,801 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:38:17,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:38:17,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-09 15:38:17,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:38:17,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:38:17,982 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:38:18,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:38:18,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048853002] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:38:18,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:38:18,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 32 [2023-12-09 15:38:18,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796328092] [2023-12-09 15:38:18,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:38:18,238 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-09 15:38:18,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:38:18,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-09 15:38:18,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2023-12-09 15:38:18,239 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2023-12-09 15:38:18,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1819 places, 3846 transitions, 343873 flow. Second operand has 32 states, 32 states have (on average 45.96875) internal successors, (1471), 32 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:18,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:38:18,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2023-12-09 15:38:18,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:38:27,962 INFO L124 PetriNetUnfolderBase]: 2022/6231 cut-off events. [2023-12-09 15:38:27,962 INFO L125 PetriNetUnfolderBase]: For 770538/780262 co-relation queries the response was YES. [2023-12-09 15:38:27,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222025 conditions, 6231 events. 2022/6231 cut-off events. For 770538/780262 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 64382 event pairs, 11 based on Foata normal form. 99/5946 useless extension candidates. Maximal degree in co-relation 200358. Up to 2955 conditions per place. [2023-12-09 15:38:28,096 INFO L140 encePairwiseOnDemand]: 65/86 looper letters, 1720 selfloop transitions, 1077 changer transitions 1231/4062 dead transitions. [2023-12-09 15:38:28,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1872 places, 4062 transitions, 369669 flow [2023-12-09 15:38:28,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-12-09 15:38:28,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2023-12-09 15:38:28,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 2579 transitions. [2023-12-09 15:38:28,098 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5553402239448751 [2023-12-09 15:38:28,098 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 2579 transitions. [2023-12-09 15:38:28,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 2579 transitions. [2023-12-09 15:38:28,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:38:28,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 2579 transitions. [2023-12-09 15:38:28,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 47.75925925925926) internal successors, (2579), 54 states have internal predecessors, (2579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:28,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 86.0) internal successors, (4730), 55 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:28,102 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 86.0) internal successors, (4730), 55 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:28,103 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 1796 predicate places. [2023-12-09 15:38:28,103 INFO L500 AbstractCegarLoop]: Abstraction has has 1872 places, 4062 transitions, 369669 flow [2023-12-09 15:38:28,103 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 45.96875) internal successors, (1471), 32 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:28,103 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:38:28,103 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:38:28,108 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-09 15:38:28,308 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-12-09 15:38:28,308 INFO L425 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:38:28,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:38:28,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1703868648, now seen corresponding path program 17 times [2023-12-09 15:38:28,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:38:28,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407605409] [2023-12-09 15:38:28,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:38:28,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:38:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:38:28,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:38:28,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:38:28,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407605409] [2023-12-09 15:38:28,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407605409] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:38:28,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215852194] [2023-12-09 15:38:28,459 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-09 15:38:28,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:38:28,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:38:28,470 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:38:28,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-09 15:38:28,558 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-09 15:38:28,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:38:28,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-09 15:38:28,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:38:28,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:38:28,768 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:38:29,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:38:29,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215852194] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:38:29,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:38:29,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2023-12-09 15:38:29,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294731270] [2023-12-09 15:38:29,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:38:29,152 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-09 15:38:29,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:38:29,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-09 15:38:29,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=938, Unknown=0, NotChecked=0, Total=1056 [2023-12-09 15:38:29,153 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2023-12-09 15:38:29,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1872 places, 4062 transitions, 369669 flow. Second operand has 33 states, 33 states have (on average 45.84848484848485) internal successors, (1513), 33 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:29,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:38:29,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2023-12-09 15:38:29,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:38:40,213 INFO L124 PetriNetUnfolderBase]: 2214/6656 cut-off events. [2023-12-09 15:38:40,213 INFO L125 PetriNetUnfolderBase]: For 809078/819027 co-relation queries the response was YES. [2023-12-09 15:38:40,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242694 conditions, 6656 events. 2214/6656 cut-off events. For 809078/819027 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 68561 event pairs, 18 based on Foata normal form. 83/6321 useless extension candidates. Maximal degree in co-relation 221863. Up to 3137 conditions per place. [2023-12-09 15:38:40,367 INFO L140 encePairwiseOnDemand]: 66/86 looper letters, 1426 selfloop transitions, 1727 changer transitions 1265/4452 dead transitions. [2023-12-09 15:38:40,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1914 places, 4452 transitions, 408929 flow [2023-12-09 15:38:40,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-09 15:38:40,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-12-09 15:38:40,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 2070 transitions. [2023-12-09 15:38:40,369 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5597620335316387 [2023-12-09 15:38:40,369 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 2070 transitions. [2023-12-09 15:38:40,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 2070 transitions. [2023-12-09 15:38:40,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:38:40,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 2070 transitions. [2023-12-09 15:38:40,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 48.13953488372093) internal successors, (2070), 43 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:40,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 86.0) internal successors, (3784), 44 states have internal predecessors, (3784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:40,372 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 86.0) internal successors, (3784), 44 states have internal predecessors, (3784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:40,373 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 1838 predicate places. [2023-12-09 15:38:40,373 INFO L500 AbstractCegarLoop]: Abstraction has has 1914 places, 4452 transitions, 408929 flow [2023-12-09 15:38:40,373 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 45.84848484848485) internal successors, (1513), 33 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:40,373 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:38:40,373 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:38:40,378 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-09 15:38:40,577 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-12-09 15:38:40,577 INFO L425 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:38:40,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:38:40,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1854829964, now seen corresponding path program 18 times [2023-12-09 15:38:40,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:38:40,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389558287] [2023-12-09 15:38:40,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:38:40,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:38:40,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:38:40,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:38:40,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:38:40,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389558287] [2023-12-09 15:38:40,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389558287] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:38:40,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942907927] [2023-12-09 15:38:40,787 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-09 15:38:40,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:38:40,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:38:40,788 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:38:40,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-09 15:38:40,878 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-12-09 15:38:40,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:38:40,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-09 15:38:40,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:38:41,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:38:41,028 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:38:41,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:38:41,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942907927] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:38:41,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:38:41,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2023-12-09 15:38:41,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841950532] [2023-12-09 15:38:41,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:38:41,257 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-09 15:38:41,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:38:41,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-09 15:38:41,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=929, Unknown=0, NotChecked=0, Total=1056 [2023-12-09 15:38:41,259 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2023-12-09 15:38:41,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1914 places, 4452 transitions, 408929 flow. Second operand has 33 states, 33 states have (on average 45.84848484848485) internal successors, (1513), 33 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:41,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:38:41,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2023-12-09 15:38:41,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:38:55,239 INFO L124 PetriNetUnfolderBase]: 2601/7446 cut-off events. [2023-12-09 15:38:55,239 INFO L125 PetriNetUnfolderBase]: For 891368/901759 co-relation queries the response was YES. [2023-12-09 15:38:55,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281756 conditions, 7446 events. 2601/7446 cut-off events. For 891368/901759 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 76083 event pairs, 13 based on Foata normal form. 83/7043 useless extension candidates. Maximal degree in co-relation 260014. Up to 3601 conditions per place. [2023-12-09 15:38:55,418 INFO L140 encePairwiseOnDemand]: 65/86 looper letters, 1479 selfloop transitions, 2359 changer transitions 1316/5188 dead transitions. [2023-12-09 15:38:55,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1970 places, 5188 transitions, 484785 flow [2023-12-09 15:38:55,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-09 15:38:55,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2023-12-09 15:38:55,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 2752 transitions. [2023-12-09 15:38:55,420 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5614035087719298 [2023-12-09 15:38:55,420 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 2752 transitions. [2023-12-09 15:38:55,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 2752 transitions. [2023-12-09 15:38:55,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:38:55,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 2752 transitions. [2023-12-09 15:38:55,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 48.280701754385966) internal successors, (2752), 57 states have internal predecessors, (2752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:55,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 86.0) internal successors, (4988), 58 states have internal predecessors, (4988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:55,424 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 86.0) internal successors, (4988), 58 states have internal predecessors, (4988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:55,425 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 1894 predicate places. [2023-12-09 15:38:55,425 INFO L500 AbstractCegarLoop]: Abstraction has has 1970 places, 5188 transitions, 484785 flow [2023-12-09 15:38:55,425 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 45.84848484848485) internal successors, (1513), 33 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:55,425 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:38:55,425 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:38:55,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-09 15:38:55,630 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:38:55,630 INFO L425 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:38:55,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:38:55,630 INFO L85 PathProgramCache]: Analyzing trace with hash -828076840, now seen corresponding path program 19 times [2023-12-09 15:38:55,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:38:55,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878360838] [2023-12-09 15:38:55,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:38:55,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:38:55,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:38:55,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:38:55,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:38:55,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878360838] [2023-12-09 15:38:55,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878360838] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:38:55,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805152356] [2023-12-09 15:38:55,786 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-09 15:38:55,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:38:55,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:38:55,787 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:38:55,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-09 15:38:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:38:55,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-09 15:38:55,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:38:56,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:38:56,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:38:56,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:38:56,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805152356] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:38:56,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:38:56,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2023-12-09 15:38:56,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955888245] [2023-12-09 15:38:56,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:38:56,360 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-09 15:38:56,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:38:56,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-09 15:38:56,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2023-12-09 15:38:56,363 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2023-12-09 15:38:56,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1970 places, 5188 transitions, 484785 flow. Second operand has 34 states, 34 states have (on average 45.794117647058826) internal successors, (1557), 34 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:38:56,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:38:56,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2023-12-09 15:38:56,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:39:13,771 INFO L124 PetriNetUnfolderBase]: 2731/7776 cut-off events. [2023-12-09 15:39:13,771 INFO L125 PetriNetUnfolderBase]: For 940840/951695 co-relation queries the response was YES. [2023-12-09 15:39:13,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300873 conditions, 7776 events. 2731/7776 cut-off events. For 940840/951695 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 79705 event pairs, 14 based on Foata normal form. 89/7358 useless extension candidates. Maximal degree in co-relation 278422. Up to 3781 conditions per place. [2023-12-09 15:39:13,973 INFO L140 encePairwiseOnDemand]: 63/86 looper letters, 2135 selfloop transitions, 1939 changer transitions 1349/5457 dead transitions. [2023-12-09 15:39:13,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2025 places, 5457 transitions, 521059 flow [2023-12-09 15:39:13,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-09 15:39:13,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2023-12-09 15:39:13,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 2702 transitions. [2023-12-09 15:39:13,976 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.561046511627907 [2023-12-09 15:39:13,976 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 2702 transitions. [2023-12-09 15:39:13,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 2702 transitions. [2023-12-09 15:39:13,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:39:13,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 2702 transitions. [2023-12-09 15:39:13,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 48.25) internal successors, (2702), 56 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:13,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 86.0) internal successors, (4902), 57 states have internal predecessors, (4902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:13,981 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 86.0) internal successors, (4902), 57 states have internal predecessors, (4902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:13,981 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 1949 predicate places. [2023-12-09 15:39:13,981 INFO L500 AbstractCegarLoop]: Abstraction has has 2025 places, 5457 transitions, 521059 flow [2023-12-09 15:39:13,981 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 45.794117647058826) internal successors, (1557), 34 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:13,982 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:39:13,982 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:39:13,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-09 15:39:14,186 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2023-12-09 15:39:14,187 INFO L425 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:39:14,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:39:14,187 INFO L85 PathProgramCache]: Analyzing trace with hash -109397034, now seen corresponding path program 20 times [2023-12-09 15:39:14,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:39:14,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491467464] [2023-12-09 15:39:14,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:39:14,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:39:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:39:14,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:39:14,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:39:14,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491467464] [2023-12-09 15:39:14,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491467464] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:39:14,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663761821] [2023-12-09 15:39:14,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:39:14,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:39:14,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:39:14,346 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:39:14,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-09 15:39:14,427 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:39:14,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:39:14,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-09 15:39:14,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:39:14,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:39:14,697 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:39:14,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:39:15,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663761821] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:39:15,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:39:15,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2023-12-09 15:39:15,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037911189] [2023-12-09 15:39:15,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:39:15,000 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-09 15:39:15,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:39:15,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-09 15:39:15,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=986, Unknown=0, NotChecked=0, Total=1122 [2023-12-09 15:39:15,004 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2023-12-09 15:39:15,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2025 places, 5457 transitions, 521059 flow. Second operand has 34 states, 34 states have (on average 45.794117647058826) internal successors, (1557), 34 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:15,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:39:15,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2023-12-09 15:39:15,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:39:32,888 INFO L124 PetriNetUnfolderBase]: 2733/7813 cut-off events. [2023-12-09 15:39:32,888 INFO L125 PetriNetUnfolderBase]: For 968518/978997 co-relation queries the response was YES. [2023-12-09 15:39:32,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308183 conditions, 7813 events. 2733/7813 cut-off events. For 968518/978997 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 80349 event pairs, 14 based on Foata normal form. 83/7389 useless extension candidates. Maximal degree in co-relation 285017. Up to 3781 conditions per place. [2023-12-09 15:39:33,084 INFO L140 encePairwiseOnDemand]: 63/86 looper letters, 2141 selfloop transitions, 1937 changer transitions 1367/5479 dead transitions. [2023-12-09 15:39:33,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2079 places, 5479 transitions, 533955 flow [2023-12-09 15:39:33,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-09 15:39:33,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2023-12-09 15:39:33,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 2649 transitions. [2023-12-09 15:39:33,087 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5600422832980972 [2023-12-09 15:39:33,087 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 2649 transitions. [2023-12-09 15:39:33,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 2649 transitions. [2023-12-09 15:39:33,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:39:33,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 2649 transitions. [2023-12-09 15:39:33,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 48.163636363636364) internal successors, (2649), 55 states have internal predecessors, (2649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:33,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 86.0) internal successors, (4816), 56 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:33,092 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 86.0) internal successors, (4816), 56 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:33,093 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 2003 predicate places. [2023-12-09 15:39:33,093 INFO L500 AbstractCegarLoop]: Abstraction has has 2079 places, 5479 transitions, 533955 flow [2023-12-09 15:39:33,093 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 45.794117647058826) internal successors, (1557), 34 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:33,093 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:39:33,093 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:39:33,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-09 15:39:33,297 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:39:33,297 INFO L425 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:39:33,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:39:33,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1684669328, now seen corresponding path program 21 times [2023-12-09 15:39:33,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:39:33,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503914730] [2023-12-09 15:39:33,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:39:33,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:39:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:39:33,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:39:33,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:39:33,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503914730] [2023-12-09 15:39:33,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503914730] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:39:33,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342004643] [2023-12-09 15:39:33,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:39:33,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:39:33,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:39:33,435 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:39:33,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-09 15:39:33,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-09 15:39:33,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:39:33,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-09 15:39:33,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:39:33,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:39:33,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:39:34,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:39:34,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342004643] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:39:34,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:39:34,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2023-12-09 15:39:34,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834637705] [2023-12-09 15:39:34,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:39:34,034 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-09 15:39:34,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:39:34,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-09 15:39:34,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1052, Unknown=0, NotChecked=0, Total=1190 [2023-12-09 15:39:34,035 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2023-12-09 15:39:34,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2079 places, 5479 transitions, 533955 flow. Second operand has 35 states, 35 states have (on average 45.82857142857143) internal successors, (1604), 35 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:39:34,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:39:34,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2023-12-09 15:39:34,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:40:09,269 INFO L124 PetriNetUnfolderBase]: 4972/13146 cut-off events. [2023-12-09 15:40:09,269 INFO L125 PetriNetUnfolderBase]: For 1580340/1597081 co-relation queries the response was YES. [2023-12-09 15:40:09,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 537850 conditions, 13146 events. 4972/13146 cut-off events. For 1580340/1597081 co-relation queries the response was YES. Maximal size of possible extension queue 747. Compared 140005 event pairs, 18 based on Foata normal form. 223/12422 useless extension candidates. Maximal degree in co-relation 437706. Up to 6453 conditions per place. [2023-12-09 15:40:09,722 INFO L140 encePairwiseOnDemand]: 63/86 looper letters, 2248 selfloop transitions, 5490 changer transitions 1946/9718 dead transitions. [2023-12-09 15:40:09,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2237 places, 9718 transitions, 962212 flow [2023-12-09 15:40:09,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2023-12-09 15:40:09,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2023-12-09 15:40:09,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 7578 transitions. [2023-12-09 15:40:09,726 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5541904344010531 [2023-12-09 15:40:09,726 INFO L72 ComplementDD]: Start complementDD. Operand 159 states and 7578 transitions. [2023-12-09 15:40:09,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 159 states and 7578 transitions. [2023-12-09 15:40:09,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:40:09,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 159 states and 7578 transitions. [2023-12-09 15:40:09,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 160 states, 159 states have (on average 47.660377358490564) internal successors, (7578), 159 states have internal predecessors, (7578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:40:09,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 160 states, 160 states have (on average 86.0) internal successors, (13760), 160 states have internal predecessors, (13760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:40:09,740 INFO L81 ComplementDD]: Finished complementDD. Result has 160 states, 160 states have (on average 86.0) internal successors, (13760), 160 states have internal predecessors, (13760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:40:09,740 INFO L308 CegarLoopForPetriNet]: 76 programPoint places, 2161 predicate places. [2023-12-09 15:40:09,740 INFO L500 AbstractCegarLoop]: Abstraction has has 2237 places, 9718 transitions, 962212 flow [2023-12-09 15:40:09,741 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 45.82857142857143) internal successors, (1604), 35 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:40:09,741 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:40:09,741 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:40:09,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-09 15:40:09,945 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:40:09,946 INFO L425 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:40:09,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:40:09,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1767769436, now seen corresponding path program 22 times [2023-12-09 15:40:09,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:40:09,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928401391] [2023-12-09 15:40:09,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:40:09,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:40:09,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:40:10,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:40:10,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:40:10,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928401391] [2023-12-09 15:40:10,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928401391] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:40:10,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323327705] [2023-12-09 15:40:10,105 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:40:10,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:40:10,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:40:10,106 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:40:10,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-09 15:40:10,202 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:40:10,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:40:10,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-09 15:40:10,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:40:10,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:40:10,388 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:40:10,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:40:10,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323327705] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:40:10,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:40:10,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 30 [2023-12-09 15:40:10,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521576559] [2023-12-09 15:40:10,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:40:10,611 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-09 15:40:10,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:40:10,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-09 15:40:10,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=770, Unknown=0, NotChecked=0, Total=870 [2023-12-09 15:40:10,612 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2023-12-09 15:40:10,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2237 places, 9718 transitions, 962212 flow. Second operand has 30 states, 30 states have (on average 45.93333333333333) internal successors, (1378), 30 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:40:10,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:40:10,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2023-12-09 15:40:10,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-12-09 15:40:35,903 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-09 15:40:35,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2023-12-09 15:40:35,909 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-12-09 15:40:35,913 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-09 15:40:35,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-09 15:40:36,113 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:40:36,114 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (30states, 44/86 universal loopers) in iteration 54,while PetriNetUnfolder was constructing finite prefix that currently has 170848 conditions, 3855 events (1493/3854 cut-off events. For 465290/469651 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 39798 event pairs, 2 based on Foata normal form. 39/4241 useless extension candidates. Maximal degree in co-relation 167115. Up to 1917 conditions per place.). [2023-12-09 15:40:36,129 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-12-09 15:40:36,129 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-12-09 15:40:36,129 INFO L457 BasicCegarLoop]: Path program histogram: [22, 20, 6, 6] [2023-12-09 15:40:36,132 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 15:40:36,132 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 15:40:36,134 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:40:36 BasicIcfg [2023-12-09 15:40:36,134 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 15:40:36,135 INFO L158 Benchmark]: Toolchain (without parser) took 254820.85ms. Allocated memory was 225.4MB in the beginning and 3.2GB in the end (delta: 3.0GB). Free memory was 171.7MB in the beginning and 1.6GB in the end (delta: -1.4GB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. [2023-12-09 15:40:36,135 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 187.7MB. Free memory is still 135.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 15:40:36,135 INFO L158 Benchmark]: CACSL2BoogieTranslator took 175.32ms. Allocated memory is still 225.4MB. Free memory was 171.7MB in the beginning and 160.7MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-09 15:40:36,135 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.30ms. Allocated memory is still 225.4MB. Free memory was 160.7MB in the beginning and 159.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 15:40:36,135 INFO L158 Benchmark]: Boogie Preprocessor took 15.11ms. Allocated memory is still 225.4MB. Free memory was 159.1MB in the beginning and 157.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-09 15:40:36,135 INFO L158 Benchmark]: RCFGBuilder took 317.81ms. Allocated memory is still 225.4MB. Free memory was 157.5MB in the beginning and 144.4MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-09 15:40:36,135 INFO L158 Benchmark]: TraceAbstraction took 254280.87ms. Allocated memory was 225.4MB in the beginning and 3.2GB in the end (delta: 3.0GB). Free memory was 143.4MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. [2023-12-09 15:40:36,137 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 187.7MB. Free memory is still 135.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 175.32ms. Allocated memory is still 225.4MB. Free memory was 171.7MB in the beginning and 160.7MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 21.30ms. Allocated memory is still 225.4MB. Free memory was 160.7MB in the beginning and 159.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.11ms. Allocated memory is still 225.4MB. Free memory was 159.1MB in the beginning and 157.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 317.81ms. Allocated memory is still 225.4MB. Free memory was 157.5MB in the beginning and 144.4MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 254280.87ms. Allocated memory was 225.4MB in the beginning and 3.2GB in the end (delta: 3.0GB). Free memory was 143.4MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (30states, 44/86 universal loopers) in iteration 54,while PetriNetUnfolder was constructing finite prefix that currently has 170848 conditions, 3855 events (1493/3854 cut-off events. For 465290/469651 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 39798 event pairs, 2 based on Foata normal form. 39/4241 useless extension candidates. Maximal degree in co-relation 167115. Up to 1917 conditions per place.). - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (30states, 44/86 universal loopers) in iteration 54,while PetriNetUnfolder was constructing finite prefix that currently has 170848 conditions, 3855 events (1493/3854 cut-off events. For 465290/469651 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 39798 event pairs, 2 based on Foata normal form. 39/4241 useless extension candidates. Maximal degree in co-relation 167115. Up to 1917 conditions per place.). - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (30states, 44/86 universal loopers) in iteration 54,while PetriNetUnfolder was constructing finite prefix that currently has 170848 conditions, 3855 events (1493/3854 cut-off events. For 465290/469651 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 39798 event pairs, 2 based on Foata normal form. 39/4241 useless extension candidates. Maximal degree in co-relation 167115. Up to 1917 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 105 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 254.2s, OverallIterations: 54, TraceHistogramMax: 1, PathProgramHistogramMax: 22, EmptinessCheckTime: 0.0s, AutomataDifference: 227.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9900 SdHoareTripleChecker+Valid, 14.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9900 mSDsluCounter, 18791 SdHoareTripleChecker+Invalid, 11.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16901 mSDsCounter, 1301 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 36237 IncrementalHoareTripleChecker+Invalid, 37538 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1301 mSolverCounterUnsat, 1890 mSDtfsCounter, 36237 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5542 GetRequests, 2787 SyntacticMatches, 2 SemanticMatches, 2753 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115417 ImplicationChecksByTransitivity, 39.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=962212occurred in iteration=53, InterpolantAutomatonStates: 2214, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 19.4s InterpolantComputationTime, 5101 NumberOfCodeBlocks, 5101 NumberOfCodeBlocksAsserted, 100 NumberOfCheckSat, 6516 ConstructedInterpolants, 0 QuantifiedInterpolants, 30289 SizeOfPredicates, 220 NumberOfNonLiveVariables, 3812 ConjunctsInSsa, 446 ConjunctsInUnsatCore, 99 InterpolantComputations, 33 PerfectInterpolantSequences, 17/144 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown