/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -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/popl20-figure1-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-29 22:11:09,204 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 22:11:09,256 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-29 22:11:09,276 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 22:11:09,277 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 22:11:09,277 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 22:11:09,277 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 22:11:09,278 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 22:11:09,278 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 22:11:09,278 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 22:11:09,279 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 22:11:09,279 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 22:11:09,279 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 22:11:09,280 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 22:11:09,280 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 22:11:09,280 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 22:11:09,281 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 22:11:09,281 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 22:11:09,281 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 22:11:09,282 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 22:11:09,282 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 22:11:09,283 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 22:11:09,283 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 22:11:09,283 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-29 22:11:09,284 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 22:11:09,284 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 22:11:09,284 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 22:11:09,285 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 22:11:09,285 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 22:11:09,285 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 22:11:09,286 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 22:11:09,286 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 22:11:09,286 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 22:11:09,286 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-11-29 22:11:09,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 22:11:09,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 22:11:09,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 22:11:09,532 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 22:11:09,532 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 22:11:09,533 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c [2023-11-29 22:11:10,632 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 22:11:10,797 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 22:11:10,798 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c [2023-11-29 22:11:10,804 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0d330a24/3c37ccc386884b8397e649c0485fb091/FLAG37aa512d9 [2023-11-29 22:11:10,817 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0d330a24/3c37ccc386884b8397e649c0485fb091 [2023-11-29 22:11:10,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 22:11:10,820 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-29 22:11:10,821 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 22:11:10,821 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 22:11:10,825 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 22:11:10,825 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:11:10" (1/1) ... [2023-11-29 22:11:10,826 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78fe52a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:10, skipping insertion in model container [2023-11-29 22:11:10,826 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:11:10" (1/1) ... [2023-11-29 22:11:10,845 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 22:11:10,961 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/popl20-figure1-alt.wvr.c[2113,2126] [2023-11-29 22:11:10,965 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 22:11:10,971 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 22:11:10,993 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/popl20-figure1-alt.wvr.c[2113,2126] [2023-11-29 22:11:10,994 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 22:11:11,001 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 22:11:11,002 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 22:11:11,006 INFO L206 MainTranslator]: Completed translation [2023-11-29 22:11:11,006 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:11 WrapperNode [2023-11-29 22:11:11,006 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 22:11:11,007 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 22:11:11,007 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 22:11:11,007 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 22:11:11,013 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:11" (1/1) ... [2023-11-29 22:11:11,018 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:11" (1/1) ... [2023-11-29 22:11:11,033 INFO L138 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 79 [2023-11-29 22:11:11,034 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 22:11:11,034 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 22:11:11,034 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 22:11:11,034 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 22:11:11,042 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:11" (1/1) ... [2023-11-29 22:11:11,042 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:11" (1/1) ... [2023-11-29 22:11:11,044 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:11" (1/1) ... [2023-11-29 22:11:11,044 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:11" (1/1) ... [2023-11-29 22:11:11,048 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:11" (1/1) ... [2023-11-29 22:11:11,050 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:11" (1/1) ... [2023-11-29 22:11:11,051 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:11" (1/1) ... [2023-11-29 22:11:11,052 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:11" (1/1) ... [2023-11-29 22:11:11,054 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 22:11:11,055 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 22:11:11,055 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 22:11:11,055 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 22:11:11,056 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:11" (1/1) ... [2023-11-29 22:11:11,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 22:11:11,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:11:11,089 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-29 22:11:11,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-29 22:11:11,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 22:11:11,119 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 22:11:11,120 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 22:11:11,120 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 22:11:11,120 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 22:11:11,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 22:11:11,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 22:11:11,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 22:11:11,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 22:11:11,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 22:11:11,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 22:11:11,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 22:11:11,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 22:11:11,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 22:11:11,123 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 22:11:11,192 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 22:11:11,193 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 22:11:11,361 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 22:11:11,406 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 22:11:11,407 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 22:11:11,408 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:11:11 BoogieIcfgContainer [2023-11-29 22:11:11,408 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 22:11:11,409 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 22:11:11,410 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 22:11:11,412 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 22:11:11,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:11:10" (1/3) ... [2023-11-29 22:11:11,413 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@107af4cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:11:11, skipping insertion in model container [2023-11-29 22:11:11,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:11" (2/3) ... [2023-11-29 22:11:11,413 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@107af4cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:11:11, skipping insertion in model container [2023-11-29 22:11:11,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:11:11" (3/3) ... [2023-11-29 22:11:11,414 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1-alt.wvr.c [2023-11-29 22:11:11,428 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 22:11:11,428 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 22:11:11,428 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 22:11:11,482 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 22:11:11,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 91 transitions, 196 flow [2023-11-29 22:11:11,557 INFO L124 PetriNetUnfolderBase]: 6/89 cut-off events. [2023-11-29 22:11:11,558 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 22:11:11,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 89 events. 6/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 56 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-11-29 22:11:11,562 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 91 transitions, 196 flow [2023-11-29 22:11:11,566 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 80 transitions, 172 flow [2023-11-29 22:11:11,574 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 22:11:11,579 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;@418066ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 22:11:11,580 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-29 22:11:11,603 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 22:11:11,603 INFO L124 PetriNetUnfolderBase]: 6/79 cut-off events. [2023-11-29 22:11:11,603 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 22:11:11,603 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:11:11,604 INFO L232 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] [2023-11-29 22:11:11,605 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:11:11,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:11:11,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1065375783, now seen corresponding path program 1 times [2023-11-29 22:11:11,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:11:11,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068285062] [2023-11-29 22:11:11,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:11:11,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:11:11,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:11:12,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:12,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:11:12,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068285062] [2023-11-29 22:11:12,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068285062] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:11:12,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:11:12,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 22:11:12,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591312975] [2023-11-29 22:11:12,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:11:12,759 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 22:11:12,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:11:12,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 22:11:12,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-11-29 22:11:12,796 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 91 [2023-11-29 22:11:12,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 80 transitions, 172 flow. Second operand has 12 states, 12 states have (on average 51.25) internal successors, (615), 12 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:12,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:11:12,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 91 [2023-11-29 22:11:12,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:11:13,277 INFO L124 PetriNetUnfolderBase]: 97/323 cut-off events. [2023-11-29 22:11:13,277 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2023-11-29 22:11:13,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 599 conditions, 323 events. 97/323 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1406 event pairs, 46 based on Foata normal form. 10/296 useless extension candidates. Maximal degree in co-relation 422. Up to 135 conditions per place. [2023-11-29 22:11:13,284 INFO L140 encePairwiseOnDemand]: 71/91 looper letters, 59 selfloop transitions, 16 changer transitions 15/129 dead transitions. [2023-11-29 22:11:13,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 129 transitions, 477 flow [2023-11-29 22:11:13,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 22:11:13,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-29 22:11:13,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 987 transitions. [2023-11-29 22:11:13,303 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6025641025641025 [2023-11-29 22:11:13,304 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 987 transitions. [2023-11-29 22:11:13,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 987 transitions. [2023-11-29 22:11:13,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:11:13,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 987 transitions. [2023-11-29 22:11:13,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 54.833333333333336) internal successors, (987), 18 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:13,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 91.0) internal successors, (1729), 19 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:13,327 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 91.0) internal successors, (1729), 19 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:13,331 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 17 predicate places. [2023-11-29 22:11:13,331 INFO L500 AbstractCegarLoop]: Abstraction has has 98 places, 129 transitions, 477 flow [2023-11-29 22:11:13,332 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 51.25) internal successors, (615), 12 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:13,332 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:11:13,332 INFO L232 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] [2023-11-29 22:11:13,332 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 22:11:13,333 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:11:13,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:11:13,334 INFO L85 PathProgramCache]: Analyzing trace with hash 369045209, now seen corresponding path program 2 times [2023-11-29 22:11:13,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:11:13,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862429073] [2023-11-29 22:11:13,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:11:13,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:11:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:11:13,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:13,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:11:13,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862429073] [2023-11-29 22:11:13,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862429073] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:11:13,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:11:13,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 22:11:13,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709964296] [2023-11-29 22:11:13,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:11:13,810 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 22:11:13,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:11:13,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 22:11:13,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-11-29 22:11:13,813 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 91 [2023-11-29 22:11:13,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 129 transitions, 477 flow. Second operand has 12 states, 12 states have (on average 51.25) internal successors, (615), 12 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:13,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:11:13,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 91 [2023-11-29 22:11:13,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:11:14,096 INFO L124 PetriNetUnfolderBase]: 102/370 cut-off events. [2023-11-29 22:11:14,096 INFO L125 PetriNetUnfolderBase]: For 146/186 co-relation queries the response was YES. [2023-11-29 22:11:14,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 926 conditions, 370 events. 102/370 cut-off events. For 146/186 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1815 event pairs, 43 based on Foata normal form. 4/335 useless extension candidates. Maximal degree in co-relation 631. Up to 135 conditions per place. [2023-11-29 22:11:14,099 INFO L140 encePairwiseOnDemand]: 76/91 looper letters, 62 selfloop transitions, 17 changer transitions 35/153 dead transitions. [2023-11-29 22:11:14,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 153 transitions, 819 flow [2023-11-29 22:11:14,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 22:11:14,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 22:11:14,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 864 transitions. [2023-11-29 22:11:14,102 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5934065934065934 [2023-11-29 22:11:14,102 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 864 transitions. [2023-11-29 22:11:14,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 864 transitions. [2023-11-29 22:11:14,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:11:14,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 864 transitions. [2023-11-29 22:11:14,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 54.0) internal successors, (864), 16 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:14,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 91.0) internal successors, (1547), 17 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:14,108 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 91.0) internal successors, (1547), 17 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:14,108 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 32 predicate places. [2023-11-29 22:11:14,109 INFO L500 AbstractCegarLoop]: Abstraction has has 113 places, 153 transitions, 819 flow [2023-11-29 22:11:14,109 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 51.25) internal successors, (615), 12 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:14,109 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:11:14,109 INFO L232 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] [2023-11-29 22:11:14,109 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 22:11:14,110 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:11:14,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:11:14,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1243862967, now seen corresponding path program 3 times [2023-11-29 22:11:14,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:11:14,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313105427] [2023-11-29 22:11:14,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:11:14,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:11:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:11:14,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:14,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:11:14,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313105427] [2023-11-29 22:11:14,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313105427] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:11:14,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:11:14,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 22:11:14,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601642086] [2023-11-29 22:11:14,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:11:14,527 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 22:11:14,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:11:14,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 22:11:14,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-29 22:11:14,530 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 91 [2023-11-29 22:11:14,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 153 transitions, 819 flow. Second operand has 12 states, 12 states have (on average 51.25) internal successors, (615), 12 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:14,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:11:14,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 91 [2023-11-29 22:11:14,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:11:14,819 INFO L124 PetriNetUnfolderBase]: 116/414 cut-off events. [2023-11-29 22:11:14,819 INFO L125 PetriNetUnfolderBase]: For 271/327 co-relation queries the response was YES. [2023-11-29 22:11:14,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1337 conditions, 414 events. 116/414 cut-off events. For 271/327 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2113 event pairs, 42 based on Foata normal form. 9/379 useless extension candidates. Maximal degree in co-relation 1002. Up to 139 conditions per place. [2023-11-29 22:11:14,822 INFO L140 encePairwiseOnDemand]: 75/91 looper letters, 68 selfloop transitions, 28 changer transitions 55/190 dead transitions. [2023-11-29 22:11:14,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 190 transitions, 1355 flow [2023-11-29 22:11:14,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 22:11:14,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 22:11:14,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 919 transitions. [2023-11-29 22:11:14,825 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5940530058177117 [2023-11-29 22:11:14,825 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 919 transitions. [2023-11-29 22:11:14,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 919 transitions. [2023-11-29 22:11:14,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:11:14,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 919 transitions. [2023-11-29 22:11:14,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 54.05882352941177) internal successors, (919), 17 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:14,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 91.0) internal successors, (1638), 18 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:14,830 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 91.0) internal successors, (1638), 18 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:14,831 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 48 predicate places. [2023-11-29 22:11:14,831 INFO L500 AbstractCegarLoop]: Abstraction has has 129 places, 190 transitions, 1355 flow [2023-11-29 22:11:14,831 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 51.25) internal successors, (615), 12 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:14,832 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:11:14,832 INFO L232 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] [2023-11-29 22:11:14,832 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 22:11:14,832 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:11:14,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:11:14,833 INFO L85 PathProgramCache]: Analyzing trace with hash 622309299, now seen corresponding path program 4 times [2023-11-29 22:11:14,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:11:14,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110099497] [2023-11-29 22:11:14,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:11:14,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:11:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:11:15,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:15,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:11:15,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110099497] [2023-11-29 22:11:15,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110099497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:11:15,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:11:15,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 22:11:15,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032928945] [2023-11-29 22:11:15,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:11:15,195 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 22:11:15,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:11:15,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 22:11:15,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-29 22:11:15,198 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 91 [2023-11-29 22:11:15,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 190 transitions, 1355 flow. Second operand has 12 states, 12 states have (on average 51.25) internal successors, (615), 12 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:15,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:11:15,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 91 [2023-11-29 22:11:15,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:11:15,438 INFO L124 PetriNetUnfolderBase]: 117/455 cut-off events. [2023-11-29 22:11:15,438 INFO L125 PetriNetUnfolderBase]: For 545/657 co-relation queries the response was YES. [2023-11-29 22:11:15,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1759 conditions, 455 events. 117/455 cut-off events. For 545/657 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2508 event pairs, 42 based on Foata normal form. 14/423 useless extension candidates. Maximal degree in co-relation 1303. Up to 139 conditions per place. [2023-11-29 22:11:15,442 INFO L140 encePairwiseOnDemand]: 75/91 looper letters, 68 selfloop transitions, 22 changer transitions 78/207 dead transitions. [2023-11-29 22:11:15,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 207 transitions, 1845 flow [2023-11-29 22:11:15,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 22:11:15,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 22:11:15,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 922 transitions. [2023-11-29 22:11:15,445 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5959922430510666 [2023-11-29 22:11:15,445 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 922 transitions. [2023-11-29 22:11:15,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 922 transitions. [2023-11-29 22:11:15,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:11:15,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 922 transitions. [2023-11-29 22:11:15,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 54.23529411764706) internal successors, (922), 17 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:15,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 91.0) internal successors, (1638), 18 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:15,454 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 91.0) internal successors, (1638), 18 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:15,455 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 64 predicate places. [2023-11-29 22:11:15,455 INFO L500 AbstractCegarLoop]: Abstraction has has 145 places, 207 transitions, 1845 flow [2023-11-29 22:11:15,455 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 51.25) internal successors, (615), 12 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:15,456 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:11:15,456 INFO L232 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] [2023-11-29 22:11:15,456 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 22:11:15,456 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:11:15,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:11:15,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1769914299, now seen corresponding path program 5 times [2023-11-29 22:11:15,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:11:15,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404523079] [2023-11-29 22:11:15,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:11:15,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:11:15,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:11:15,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:15,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:11:15,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404523079] [2023-11-29 22:11:15,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404523079] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:11:15,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:11:15,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 22:11:15,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187509691] [2023-11-29 22:11:15,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:11:15,848 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 22:11:15,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:11:15,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 22:11:15,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-29 22:11:15,850 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 91 [2023-11-29 22:11:15,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 207 transitions, 1845 flow. Second operand has 12 states, 12 states have (on average 51.25) internal successors, (615), 12 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:15,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:11:15,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 91 [2023-11-29 22:11:15,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:11:16,118 INFO L124 PetriNetUnfolderBase]: 117/506 cut-off events. [2023-11-29 22:11:16,118 INFO L125 PetriNetUnfolderBase]: For 1030/1220 co-relation queries the response was YES. [2023-11-29 22:11:16,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2231 conditions, 506 events. 117/506 cut-off events. For 1030/1220 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2995 event pairs, 48 based on Foata normal form. 9/464 useless extension candidates. Maximal degree in co-relation 1413. Up to 139 conditions per place. [2023-11-29 22:11:16,122 INFO L140 encePairwiseOnDemand]: 75/91 looper letters, 70 selfloop transitions, 26 changer transitions 92/227 dead transitions. [2023-11-29 22:11:16,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 227 transitions, 2436 flow [2023-11-29 22:11:16,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 22:11:16,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 22:11:16,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 874 transitions. [2023-11-29 22:11:16,125 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6002747252747253 [2023-11-29 22:11:16,125 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 874 transitions. [2023-11-29 22:11:16,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 874 transitions. [2023-11-29 22:11:16,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:11:16,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 874 transitions. [2023-11-29 22:11:16,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 54.625) internal successors, (874), 16 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:16,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 91.0) internal successors, (1547), 17 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:16,130 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 91.0) internal successors, (1547), 17 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:16,133 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 79 predicate places. [2023-11-29 22:11:16,133 INFO L500 AbstractCegarLoop]: Abstraction has has 160 places, 227 transitions, 2436 flow [2023-11-29 22:11:16,133 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 51.25) internal successors, (615), 12 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:16,133 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:11:16,134 INFO L232 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] [2023-11-29 22:11:16,134 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 22:11:16,134 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:11:16,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:11:16,135 INFO L85 PathProgramCache]: Analyzing trace with hash 105325811, now seen corresponding path program 6 times [2023-11-29 22:11:16,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:11:16,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532024153] [2023-11-29 22:11:16,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:11:16,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:11:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:11:16,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:16,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:11:16,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532024153] [2023-11-29 22:11:16,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532024153] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:11:16,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:11:16,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 22:11:16,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167163365] [2023-11-29 22:11:16,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:11:16,542 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 22:11:16,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:11:16,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 22:11:16,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2023-11-29 22:11:16,544 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 91 [2023-11-29 22:11:16,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 227 transitions, 2436 flow. Second operand has 12 states, 12 states have (on average 51.25) internal successors, (615), 12 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:16,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:11:16,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 91 [2023-11-29 22:11:16,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:11:16,750 INFO L124 PetriNetUnfolderBase]: 117/487 cut-off events. [2023-11-29 22:11:16,750 INFO L125 PetriNetUnfolderBase]: For 1309/1568 co-relation queries the response was YES. [2023-11-29 22:11:16,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2508 conditions, 487 events. 117/487 cut-off events. For 1309/1568 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2863 event pairs, 43 based on Foata normal form. 8/449 useless extension candidates. Maximal degree in co-relation 1619. Up to 139 conditions per place. [2023-11-29 22:11:16,754 INFO L140 encePairwiseOnDemand]: 76/91 looper letters, 49 selfloop transitions, 21 changer transitions 112/221 dead transitions. [2023-11-29 22:11:16,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 221 transitions, 2728 flow [2023-11-29 22:11:16,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 22:11:16,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 22:11:16,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 813 transitions. [2023-11-29 22:11:16,756 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5956043956043956 [2023-11-29 22:11:16,757 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 813 transitions. [2023-11-29 22:11:16,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 813 transitions. [2023-11-29 22:11:16,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:11:16,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 813 transitions. [2023-11-29 22:11:16,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 54.2) internal successors, (813), 15 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:16,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 91.0) internal successors, (1456), 16 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:16,761 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 91.0) internal successors, (1456), 16 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:16,762 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 93 predicate places. [2023-11-29 22:11:16,762 INFO L500 AbstractCegarLoop]: Abstraction has has 174 places, 221 transitions, 2728 flow [2023-11-29 22:11:16,762 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 51.25) internal successors, (615), 12 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:16,762 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:11:16,762 INFO L232 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] [2023-11-29 22:11:16,762 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 22:11:16,763 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:11:16,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:11:16,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1369594061, now seen corresponding path program 1 times [2023-11-29 22:11:16,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:11:16,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498532678] [2023-11-29 22:11:16,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:11:16,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:11:16,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:11:17,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:17,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:11:17,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498532678] [2023-11-29 22:11:17,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498532678] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:11:17,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025119695] [2023-11-29 22:11:17,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:11:17,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:11:17,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:11:17,101 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 22:11:17,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 22:11:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:11:17,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 22:11:17,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:11:17,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:17,672 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:11:18,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:18,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025119695] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:11:18,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:11:18,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2023-11-29 22:11:18,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71692311] [2023-11-29 22:11:18,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:11:18,098 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-29 22:11:18,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:11:18,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-29 22:11:18,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1064, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 22:11:18,102 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 22:11:18,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 221 transitions, 2728 flow. Second operand has 36 states, 36 states have (on average 50.02777777777778) internal successors, (1801), 36 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:18,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:11:18,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 22:11:18,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:11:20,119 INFO L124 PetriNetUnfolderBase]: 274/989 cut-off events. [2023-11-29 22:11:20,119 INFO L125 PetriNetUnfolderBase]: For 3352/3716 co-relation queries the response was YES. [2023-11-29 22:11:20,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6062 conditions, 989 events. 274/989 cut-off events. For 3352/3716 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6915 event pairs, 19 based on Foata normal form. 41/935 useless extension candidates. Maximal degree in co-relation 4088. Up to 511 conditions per place. [2023-11-29 22:11:20,128 INFO L140 encePairwiseOnDemand]: 64/91 looper letters, 155 selfloop transitions, 116 changer transitions 151/460 dead transitions. [2023-11-29 22:11:20,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 460 transitions, 6963 flow [2023-11-29 22:11:20,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-11-29 22:11:20,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2023-11-29 22:11:20,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 3808 transitions. [2023-11-29 22:11:20,135 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5732349841938883 [2023-11-29 22:11:20,135 INFO L72 ComplementDD]: Start complementDD. Operand 73 states and 3808 transitions. [2023-11-29 22:11:20,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 73 states and 3808 transitions. [2023-11-29 22:11:20,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:11:20,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 73 states and 3808 transitions. [2023-11-29 22:11:20,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 74 states, 73 states have (on average 52.16438356164384) internal successors, (3808), 73 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:20,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 74 states, 74 states have (on average 91.0) internal successors, (6734), 74 states have internal predecessors, (6734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:20,153 INFO L81 ComplementDD]: Finished complementDD. Result has 74 states, 74 states have (on average 91.0) internal successors, (6734), 74 states have internal predecessors, (6734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:20,154 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 165 predicate places. [2023-11-29 22:11:20,154 INFO L500 AbstractCegarLoop]: Abstraction has has 246 places, 460 transitions, 6963 flow [2023-11-29 22:11:20,155 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 50.02777777777778) internal successors, (1801), 36 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:20,155 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:11:20,155 INFO L232 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] [2023-11-29 22:11:20,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 22:11:20,360 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:11:20,360 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:11:20,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:11:20,361 INFO L85 PathProgramCache]: Analyzing trace with hash -168045607, now seen corresponding path program 2 times [2023-11-29 22:11:20,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:11:20,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968817626] [2023-11-29 22:11:20,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:11:20,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:11:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:11:20,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:20,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:11:20,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968817626] [2023-11-29 22:11:20,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968817626] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:11:20,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124477919] [2023-11-29 22:11:20,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 22:11:20,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:11:20,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:11:20,743 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 22:11:20,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 22:11:20,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 22:11:20,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:11:20,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 22:11:20,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:11:21,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:21,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:11:21,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:21,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124477919] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:11:21,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:11:21,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2023-11-29 22:11:21,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010162624] [2023-11-29 22:11:21,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:11:21,643 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-29 22:11:21,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:11:21,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-29 22:11:21,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1084, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 22:11:21,645 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 22:11:21,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 460 transitions, 6963 flow. Second operand has 36 states, 36 states have (on average 50.0) internal successors, (1800), 36 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:21,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:11:21,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 22:11:21,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:11:23,263 INFO L124 PetriNetUnfolderBase]: 351/1323 cut-off events. [2023-11-29 22:11:23,263 INFO L125 PetriNetUnfolderBase]: For 5791/6123 co-relation queries the response was YES. [2023-11-29 22:11:23,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8881 conditions, 1323 events. 351/1323 cut-off events. For 5791/6123 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 10252 event pairs, 28 based on Foata normal form. 54/1255 useless extension candidates. Maximal degree in co-relation 6101. Up to 706 conditions per place. [2023-11-29 22:11:23,276 INFO L140 encePairwiseOnDemand]: 64/91 looper letters, 222 selfloop transitions, 168 changer transitions 194/622 dead transitions. [2023-11-29 22:11:23,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 622 transitions, 10690 flow [2023-11-29 22:11:23,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-11-29 22:11:23,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2023-11-29 22:11:23,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 3467 transitions. [2023-11-29 22:11:23,281 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5686403149089716 [2023-11-29 22:11:23,281 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 3467 transitions. [2023-11-29 22:11:23,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 3467 transitions. [2023-11-29 22:11:23,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:11:23,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 3467 transitions. [2023-11-29 22:11:23,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 51.74626865671642) internal successors, (3467), 67 states have internal predecessors, (3467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:23,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 91.0) internal successors, (6188), 68 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:23,296 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 91.0) internal successors, (6188), 68 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:23,296 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 231 predicate places. [2023-11-29 22:11:23,296 INFO L500 AbstractCegarLoop]: Abstraction has has 312 places, 622 transitions, 10690 flow [2023-11-29 22:11:23,297 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 50.0) internal successors, (1800), 36 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:23,297 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:11:23,297 INFO L232 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] [2023-11-29 22:11:23,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 22:11:23,505 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,SelfDestructingSolverStorable7 [2023-11-29 22:11:23,506 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:11:23,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:11:23,506 INFO L85 PathProgramCache]: Analyzing trace with hash 787403493, now seen corresponding path program 3 times [2023-11-29 22:11:23,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:11:23,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843745363] [2023-11-29 22:11:23,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:11:23,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:11:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:11:23,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:23,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:11:23,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843745363] [2023-11-29 22:11:23,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843745363] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:11:23,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725187616] [2023-11-29 22:11:23,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 22:11:23,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:11:23,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:11:23,907 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 22:11:23,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 22:11:23,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 22:11:23,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:11:23,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 22:11:23,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:11:24,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:24,349 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:11:24,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:24,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725187616] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:11:24,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:11:24,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2023-11-29 22:11:24,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768537939] [2023-11-29 22:11:24,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:11:24,709 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-29 22:11:24,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:11:24,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-29 22:11:24,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1075, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 22:11:24,713 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 22:11:24,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 622 transitions, 10690 flow. Second operand has 36 states, 36 states have (on average 49.97222222222222) internal successors, (1799), 36 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:24,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:11:24,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 22:11:24,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:11:28,083 INFO L124 PetriNetUnfolderBase]: 461/1690 cut-off events. [2023-11-29 22:11:28,083 INFO L125 PetriNetUnfolderBase]: For 8737/9188 co-relation queries the response was YES. [2023-11-29 22:11:28,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12558 conditions, 1690 events. 461/1690 cut-off events. For 8737/9188 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 13940 event pairs, 39 based on Foata normal form. 64/1590 useless extension candidates. Maximal degree in co-relation 8879. Up to 942 conditions per place. [2023-11-29 22:11:28,100 INFO L140 encePairwiseOnDemand]: 64/91 looper letters, 272 selfloop transitions, 280 changer transitions 241/831 dead transitions. [2023-11-29 22:11:28,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 831 transitions, 15948 flow [2023-11-29 22:11:28,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2023-11-29 22:11:28,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2023-11-29 22:11:28,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 6147 transitions. [2023-11-29 22:11:28,118 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5676424415920214 [2023-11-29 22:11:28,118 INFO L72 ComplementDD]: Start complementDD. Operand 119 states and 6147 transitions. [2023-11-29 22:11:28,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 119 states and 6147 transitions. [2023-11-29 22:11:28,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:11:28,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 119 states and 6147 transitions. [2023-11-29 22:11:28,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 120 states, 119 states have (on average 51.65546218487395) internal successors, (6147), 119 states have internal predecessors, (6147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:28,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 120 states, 120 states have (on average 91.0) internal successors, (10920), 120 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:28,168 INFO L81 ComplementDD]: Finished complementDD. Result has 120 states, 120 states have (on average 91.0) internal successors, (10920), 120 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:28,169 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 349 predicate places. [2023-11-29 22:11:28,170 INFO L500 AbstractCegarLoop]: Abstraction has has 430 places, 831 transitions, 15948 flow [2023-11-29 22:11:28,170 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 49.97222222222222) internal successors, (1799), 36 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:28,170 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:11:28,170 INFO L232 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] [2023-11-29 22:11:28,178 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 22:11:28,375 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:11:28,376 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:11:28,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:11:28,376 INFO L85 PathProgramCache]: Analyzing trace with hash 2087946609, now seen corresponding path program 4 times [2023-11-29 22:11:28,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:11:28,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048579558] [2023-11-29 22:11:28,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:11:28,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:11:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:11:28,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:28,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:11:28,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048579558] [2023-11-29 22:11:28,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048579558] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:11:28,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461750979] [2023-11-29 22:11:28,704 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 22:11:28,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:11:28,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:11:28,708 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 22:11:28,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 22:11:28,758 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 22:11:28,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:11:28,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 22:11:28,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:11:29,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:29,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:11:29,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:29,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461750979] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:11:29,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:11:29,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2023-11-29 22:11:29,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367490360] [2023-11-29 22:11:29,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:11:29,582 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-29 22:11:29,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:11:29,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-29 22:11:29,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1079, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 22:11:29,586 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 22:11:29,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 831 transitions, 15948 flow. Second operand has 36 states, 36 states have (on average 50.0) internal successors, (1800), 36 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:29,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:11:29,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 22:11:29,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:11:34,133 INFO L124 PetriNetUnfolderBase]: 822/2962 cut-off events. [2023-11-29 22:11:34,133 INFO L125 PetriNetUnfolderBase]: For 18655/19256 co-relation queries the response was YES. [2023-11-29 22:11:34,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24087 conditions, 2962 events. 822/2962 cut-off events. For 18655/19256 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 27687 event pairs, 6 based on Foata normal form. 83/2755 useless extension candidates. Maximal degree in co-relation 16910. Up to 1803 conditions per place. [2023-11-29 22:11:34,161 INFO L140 encePairwiseOnDemand]: 63/91 looper letters, 535 selfloop transitions, 568 changer transitions 323/1464 dead transitions. [2023-11-29 22:11:34,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 1464 transitions, 31418 flow [2023-11-29 22:11:34,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2023-11-29 22:11:34,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2023-11-29 22:11:34,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 7740 transitions. [2023-11-29 22:11:34,172 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5746955746955746 [2023-11-29 22:11:34,172 INFO L72 ComplementDD]: Start complementDD. Operand 148 states and 7740 transitions. [2023-11-29 22:11:34,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 148 states and 7740 transitions. [2023-11-29 22:11:34,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:11:34,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 148 states and 7740 transitions. [2023-11-29 22:11:34,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 149 states, 148 states have (on average 52.2972972972973) internal successors, (7740), 148 states have internal predecessors, (7740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:34,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 149 states, 149 states have (on average 91.0) internal successors, (13559), 149 states have internal predecessors, (13559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:34,258 INFO L81 ComplementDD]: Finished complementDD. Result has 149 states, 149 states have (on average 91.0) internal successors, (13559), 149 states have internal predecessors, (13559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:34,258 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 496 predicate places. [2023-11-29 22:11:34,259 INFO L500 AbstractCegarLoop]: Abstraction has has 577 places, 1464 transitions, 31418 flow [2023-11-29 22:11:34,259 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 50.0) internal successors, (1800), 36 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:34,259 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:11:34,259 INFO L232 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] [2023-11-29 22:11:34,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 22:11:34,464 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:11:34,464 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:11:34,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:11:34,465 INFO L85 PathProgramCache]: Analyzing trace with hash -890807713, now seen corresponding path program 5 times [2023-11-29 22:11:34,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:11:34,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744537573] [2023-11-29 22:11:34,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:11:34,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:11:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:11:34,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:34,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:11:34,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744537573] [2023-11-29 22:11:34,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744537573] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:11:34,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540957935] [2023-11-29 22:11:34,764 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 22:11:34,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:11:34,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:11:34,766 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) [2023-11-29 22:11:34,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 22:11:34,831 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 22:11:34,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:11:34,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 22:11:34,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:11:35,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:35,198 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:11:35,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:35,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540957935] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:11:35,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:11:35,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2023-11-29 22:11:35,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280011129] [2023-11-29 22:11:35,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:11:35,518 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-29 22:11:35,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:11:35,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-29 22:11:35,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1070, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 22:11:35,521 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 22:11:35,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 1464 transitions, 31418 flow. Second operand has 36 states, 36 states have (on average 50.0) internal successors, (1800), 36 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:35,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:11:35,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 22:11:35,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:11:37,578 INFO L124 PetriNetUnfolderBase]: 1009/3526 cut-off events. [2023-11-29 22:11:37,578 INFO L125 PetriNetUnfolderBase]: For 25009/25725 co-relation queries the response was YES. [2023-11-29 22:11:37,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31579 conditions, 3526 events. 1009/3526 cut-off events. For 25009/25725 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 33669 event pairs, 7 based on Foata normal form. 55/3254 useless extension candidates. Maximal degree in co-relation 22848. Up to 2218 conditions per place. [2023-11-29 22:11:37,608 INFO L140 encePairwiseOnDemand]: 64/91 looper letters, 876 selfloop transitions, 498 changer transitions 364/1776 dead transitions. [2023-11-29 22:11:37,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 1776 transitions, 41662 flow [2023-11-29 22:11:37,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-29 22:11:37,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2023-11-29 22:11:37,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 2754 transitions. [2023-11-29 22:11:37,612 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5710138917686087 [2023-11-29 22:11:37,612 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 2754 transitions. [2023-11-29 22:11:37,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 2754 transitions. [2023-11-29 22:11:37,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:11:37,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 2754 transitions. [2023-11-29 22:11:37,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 51.9622641509434) internal successors, (2754), 53 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:37,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 91.0) internal successors, (4914), 54 states have internal predecessors, (4914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:37,621 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 91.0) internal successors, (4914), 54 states have internal predecessors, (4914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:37,621 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 548 predicate places. [2023-11-29 22:11:37,621 INFO L500 AbstractCegarLoop]: Abstraction has has 629 places, 1776 transitions, 41662 flow [2023-11-29 22:11:37,622 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 50.0) internal successors, (1800), 36 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:37,622 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:11:37,622 INFO L232 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] [2023-11-29 22:11:37,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 22:11:37,828 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,SelfDestructingSolverStorable10 [2023-11-29 22:11:37,829 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:11:37,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:11:37,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1946879097, now seen corresponding path program 6 times [2023-11-29 22:11:37,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:11:37,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184014294] [2023-11-29 22:11:37,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:11:37,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:11:37,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:11:38,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:38,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:11:38,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184014294] [2023-11-29 22:11:38,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184014294] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:11:38,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816615827] [2023-11-29 22:11:38,119 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 22:11:38,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:11:38,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:11:38,124 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) [2023-11-29 22:11:38,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 22:11:38,182 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-29 22:11:38,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:11:38,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 22:11:38,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:11:38,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:38,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:11:38,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:38,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816615827] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:11:38,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:11:38,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2023-11-29 22:11:38,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354231303] [2023-11-29 22:11:38,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:11:38,854 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-29 22:11:38,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:11:38,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-29 22:11:38,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1038, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 22:11:38,856 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 22:11:38,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 629 places, 1776 transitions, 41662 flow. Second operand has 36 states, 36 states have (on average 50.0) internal successors, (1800), 36 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:38,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:11:38,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 22:11:38,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:11:40,377 INFO L124 PetriNetUnfolderBase]: 1004/3553 cut-off events. [2023-11-29 22:11:40,377 INFO L125 PetriNetUnfolderBase]: For 29031/29971 co-relation queries the response was YES. [2023-11-29 22:11:40,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34448 conditions, 3553 events. 1004/3553 cut-off events. For 29031/29971 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 34286 event pairs, 16 based on Foata normal form. 59/3287 useless extension candidates. Maximal degree in co-relation 28921. Up to 2236 conditions per place. [2023-11-29 22:11:40,410 INFO L140 encePairwiseOnDemand]: 65/91 looper letters, 930 selfloop transitions, 458 changer transitions 383/1809 dead transitions. [2023-11-29 22:11:40,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 661 places, 1809 transitions, 45987 flow [2023-11-29 22:11:40,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 22:11:40,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-11-29 22:11:40,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1714 transitions. [2023-11-29 22:11:40,413 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5707625707625708 [2023-11-29 22:11:40,413 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1714 transitions. [2023-11-29 22:11:40,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1714 transitions. [2023-11-29 22:11:40,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:11:40,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1714 transitions. [2023-11-29 22:11:40,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 51.93939393939394) internal successors, (1714), 33 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:40,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 91.0) internal successors, (3094), 34 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:40,418 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 91.0) internal successors, (3094), 34 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:40,419 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 580 predicate places. [2023-11-29 22:11:40,419 INFO L500 AbstractCegarLoop]: Abstraction has has 661 places, 1809 transitions, 45987 flow [2023-11-29 22:11:40,419 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 50.0) internal successors, (1800), 36 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:40,419 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:11:40,420 INFO L232 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] [2023-11-29 22:11:40,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 22:11:40,625 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:11:40,625 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:11:40,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:11:40,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1787022583, now seen corresponding path program 7 times [2023-11-29 22:11:40,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:11:40,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958273612] [2023-11-29 22:11:40,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:11:40,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:11:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:11:40,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:40,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:11:40,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958273612] [2023-11-29 22:11:40,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958273612] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:11:40,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513580931] [2023-11-29 22:11:40,956 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 22:11:40,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:11:40,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:11:40,956 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) [2023-11-29 22:11:40,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 22:11:41,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:11:41,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 22:11:41,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:11:41,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:41,329 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:11:41,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:41,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513580931] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:11:41,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:11:41,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2023-11-29 22:11:41,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339053134] [2023-11-29 22:11:41,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:11:41,619 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-29 22:11:41,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:11:41,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-29 22:11:41,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1068, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 22:11:41,621 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 22:11:41,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 661 places, 1809 transitions, 45987 flow. Second operand has 36 states, 36 states have (on average 50.0) internal successors, (1800), 36 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:41,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:11:41,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 22:11:41,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:11:45,866 INFO L124 PetriNetUnfolderBase]: 1224/4303 cut-off events. [2023-11-29 22:11:45,866 INFO L125 PetriNetUnfolderBase]: For 40602/41597 co-relation queries the response was YES. [2023-11-29 22:11:45,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44753 conditions, 4303 events. 1224/4303 cut-off events. For 40602/41597 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 43133 event pairs, 16 based on Foata normal form. 76/3982 useless extension candidates. Maximal degree in co-relation 32782. Up to 2734 conditions per place. [2023-11-29 22:11:45,963 INFO L140 encePairwiseOnDemand]: 64/91 looper letters, 837 selfloop transitions, 887 changer transitions 459/2221 dead transitions. [2023-11-29 22:11:45,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 780 places, 2221 transitions, 60948 flow [2023-11-29 22:11:45,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2023-11-29 22:11:45,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2023-11-29 22:11:45,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 6181 transitions. [2023-11-29 22:11:45,972 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.566025641025641 [2023-11-29 22:11:45,972 INFO L72 ComplementDD]: Start complementDD. Operand 120 states and 6181 transitions. [2023-11-29 22:11:45,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 120 states and 6181 transitions. [2023-11-29 22:11:45,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:11:45,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 120 states and 6181 transitions. [2023-11-29 22:11:45,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 121 states, 120 states have (on average 51.50833333333333) internal successors, (6181), 120 states have internal predecessors, (6181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:45,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 121 states, 121 states have (on average 91.0) internal successors, (11011), 121 states have internal predecessors, (11011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:45,993 INFO L81 ComplementDD]: Finished complementDD. Result has 121 states, 121 states have (on average 91.0) internal successors, (11011), 121 states have internal predecessors, (11011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:45,994 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 699 predicate places. [2023-11-29 22:11:45,994 INFO L500 AbstractCegarLoop]: Abstraction has has 780 places, 2221 transitions, 60948 flow [2023-11-29 22:11:45,994 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 50.0) internal successors, (1800), 36 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:45,994 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:11:45,994 INFO L232 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] [2023-11-29 22:11:46,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 22:11:46,199 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:11:46,200 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:11:46,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:11:46,200 INFO L85 PathProgramCache]: Analyzing trace with hash -928430131, now seen corresponding path program 8 times [2023-11-29 22:11:46,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:11:46,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512459599] [2023-11-29 22:11:46,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:11:46,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:11:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:11:46,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:46,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:11:46,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512459599] [2023-11-29 22:11:46,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512459599] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:11:46,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120578295] [2023-11-29 22:11:46,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 22:11:46,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:11:46,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:11:46,538 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) [2023-11-29 22:11:46,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 22:11:46,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 22:11:46,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:11:46,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 22:11:46,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:11:47,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:47,044 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:11:47,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:47,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120578295] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:11:47,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:11:47,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2023-11-29 22:11:47,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25242646] [2023-11-29 22:11:47,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:11:47,379 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-29 22:11:47,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:11:47,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-29 22:11:47,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1070, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 22:11:47,381 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 22:11:47,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 780 places, 2221 transitions, 60948 flow. Second operand has 36 states, 36 states have (on average 50.0) internal successors, (1800), 36 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:47,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:11:47,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 22:11:47,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:11:50,717 INFO L124 PetriNetUnfolderBase]: 1320/4734 cut-off events. [2023-11-29 22:11:50,717 INFO L125 PetriNetUnfolderBase]: For 51987/53127 co-relation queries the response was YES. [2023-11-29 22:11:50,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52269 conditions, 4734 events. 1320/4734 cut-off events. For 51987/53127 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 48955 event pairs, 16 based on Foata normal form. 55/4357 useless extension candidates. Maximal degree in co-relation 38093. Up to 2992 conditions per place. [2023-11-29 22:11:50,760 INFO L140 encePairwiseOnDemand]: 64/91 looper letters, 1064 selfloop transitions, 828 changer transitions 513/2443 dead transitions. [2023-11-29 22:11:50,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 855 places, 2443 transitions, 71833 flow [2023-11-29 22:11:50,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-11-29 22:11:50,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2023-11-29 22:11:50,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 3922 transitions. [2023-11-29 22:11:50,764 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5670908039329092 [2023-11-29 22:11:50,764 INFO L72 ComplementDD]: Start complementDD. Operand 76 states and 3922 transitions. [2023-11-29 22:11:50,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 3922 transitions. [2023-11-29 22:11:50,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:11:50,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 76 states and 3922 transitions. [2023-11-29 22:11:50,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 77 states, 76 states have (on average 51.60526315789474) internal successors, (3922), 76 states have internal predecessors, (3922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:50,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 77 states, 77 states have (on average 91.0) internal successors, (7007), 77 states have internal predecessors, (7007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:50,775 INFO L81 ComplementDD]: Finished complementDD. Result has 77 states, 77 states have (on average 91.0) internal successors, (7007), 77 states have internal predecessors, (7007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:50,775 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 774 predicate places. [2023-11-29 22:11:50,775 INFO L500 AbstractCegarLoop]: Abstraction has has 855 places, 2443 transitions, 71833 flow [2023-11-29 22:11:50,776 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 50.0) internal successors, (1800), 36 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:50,776 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:11:50,776 INFO L232 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] [2023-11-29 22:11:50,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 22:11:50,981 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,SelfDestructingSolverStorable13 [2023-11-29 22:11:50,981 INFO L425 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:11:50,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:11:50,981 INFO L85 PathProgramCache]: Analyzing trace with hash 58280503, now seen corresponding path program 9 times [2023-11-29 22:11:50,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:11:50,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022867512] [2023-11-29 22:11:50,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:11:50,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:11:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:11:51,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:51,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:11:51,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022867512] [2023-11-29 22:11:51,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022867512] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:11:51,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733617187] [2023-11-29 22:11:51,380 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 22:11:51,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:11:51,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:11:51,384 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) [2023-11-29 22:11:51,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 22:11:51,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 22:11:51,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:11:51,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 22:11:51,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:11:51,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:51,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:11:52,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:52,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733617187] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:11:52,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:11:52,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2023-11-29 22:11:52,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108934903] [2023-11-29 22:11:52,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:11:52,098 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-29 22:11:52,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:11:52,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-29 22:11:52,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1104, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 22:11:52,100 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 22:11:52,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 855 places, 2443 transitions, 71833 flow. Second operand has 37 states, 37 states have (on average 49.945945945945944) internal successors, (1848), 37 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:52,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:11:52,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 22:11:52,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:11:54,743 INFO L124 PetriNetUnfolderBase]: 1336/4844 cut-off events. [2023-11-29 22:11:54,743 INFO L125 PetriNetUnfolderBase]: For 60142/61576 co-relation queries the response was YES. [2023-11-29 22:11:54,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56893 conditions, 4844 events. 1336/4844 cut-off events. For 60142/61576 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 50541 event pairs, 15 based on Foata normal form. 55/4462 useless extension candidates. Maximal degree in co-relation 41459. Up to 3056 conditions per place. [2023-11-29 22:11:54,781 INFO L140 encePairwiseOnDemand]: 65/91 looper letters, 1307 selfloop transitions, 623 changer transitions 546/2514 dead transitions. [2023-11-29 22:11:54,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 904 places, 2514 transitions, 78879 flow [2023-11-29 22:11:54,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-11-29 22:11:54,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-11-29 22:11:54,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 2573 transitions. [2023-11-29 22:11:54,783 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5654945054945055 [2023-11-29 22:11:54,784 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 2573 transitions. [2023-11-29 22:11:54,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 2573 transitions. [2023-11-29 22:11:54,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:11:54,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 2573 transitions. [2023-11-29 22:11:54,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 51.46) internal successors, (2573), 50 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:54,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 91.0) internal successors, (4641), 51 states have internal predecessors, (4641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:54,789 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 91.0) internal successors, (4641), 51 states have internal predecessors, (4641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:54,790 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 823 predicate places. [2023-11-29 22:11:54,790 INFO L500 AbstractCegarLoop]: Abstraction has has 904 places, 2514 transitions, 78879 flow [2023-11-29 22:11:54,790 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 49.945945945945944) internal successors, (1848), 37 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:54,790 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:11:54,790 INFO L232 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] [2023-11-29 22:11:54,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 22:11:54,995 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,SelfDestructingSolverStorable14 [2023-11-29 22:11:54,995 INFO L425 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:11:54,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:11:54,996 INFO L85 PathProgramCache]: Analyzing trace with hash 605377907, now seen corresponding path program 10 times [2023-11-29 22:11:54,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:11:54,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082276132] [2023-11-29 22:11:54,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:11:54,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:11:55,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:11:55,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:55,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:11:55,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082276132] [2023-11-29 22:11:55,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082276132] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:11:55,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728106877] [2023-11-29 22:11:55,270 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 22:11:55,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:11:55,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:11:55,271 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) [2023-11-29 22:11:55,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 22:11:55,321 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 22:11:55,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:11:55,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 22:11:55,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:11:55,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:55,699 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:11:55,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:55,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728106877] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:11:55,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:11:55,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2023-11-29 22:11:55,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936849588] [2023-11-29 22:11:55,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:11:55,964 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-29 22:11:55,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:11:55,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-29 22:11:55,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1102, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 22:11:55,966 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 22:11:55,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 904 places, 2514 transitions, 78879 flow. Second operand has 37 states, 37 states have (on average 49.945945945945944) internal successors, (1848), 37 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:55,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:11:55,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 22:11:55,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:11:59,233 INFO L124 PetriNetUnfolderBase]: 1387/5055 cut-off events. [2023-11-29 22:11:59,234 INFO L125 PetriNetUnfolderBase]: For 70131/71707 co-relation queries the response was YES. [2023-11-29 22:11:59,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62909 conditions, 5055 events. 1387/5055 cut-off events. For 70131/71707 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 53303 event pairs, 7 based on Foata normal form. 58/4662 useless extension candidates. Maximal degree in co-relation 46369. Up to 3190 conditions per place. [2023-11-29 22:11:59,271 INFO L140 encePairwiseOnDemand]: 63/91 looper letters, 1281 selfloop transitions, 712 changer transitions 606/2637 dead transitions. [2023-11-29 22:11:59,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 959 places, 2637 transitions, 87983 flow [2023-11-29 22:11:59,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-11-29 22:11:59,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2023-11-29 22:11:59,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 2882 transitions. [2023-11-29 22:11:59,273 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5655416012558869 [2023-11-29 22:11:59,273 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 2882 transitions. [2023-11-29 22:11:59,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 2882 transitions. [2023-11-29 22:11:59,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:11:59,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 2882 transitions. [2023-11-29 22:11:59,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 51.464285714285715) internal successors, (2882), 56 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:59,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 91.0) internal successors, (5187), 57 states have internal predecessors, (5187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:59,281 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 91.0) internal successors, (5187), 57 states have internal predecessors, (5187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:59,281 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 878 predicate places. [2023-11-29 22:11:59,281 INFO L500 AbstractCegarLoop]: Abstraction has has 959 places, 2637 transitions, 87983 flow [2023-11-29 22:11:59,282 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 49.945945945945944) internal successors, (1848), 37 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:11:59,282 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:11:59,282 INFO L232 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] [2023-11-29 22:11:59,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 22:11:59,487 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,SelfDestructingSolverStorable15 [2023-11-29 22:11:59,487 INFO L425 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:11:59,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:11:59,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1896906351, now seen corresponding path program 11 times [2023-11-29 22:11:59,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:11:59,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651290754] [2023-11-29 22:11:59,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:11:59,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:11:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:11:59,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:11:59,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:11:59,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651290754] [2023-11-29 22:11:59,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651290754] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:11:59,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028417839] [2023-11-29 22:11:59,785 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 22:11:59,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:11:59,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:11:59,786 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) [2023-11-29 22:11:59,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 22:11:59,849 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 22:11:59,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:11:59,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 22:11:59,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:12:00,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:12:00,204 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:12:00,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:12:00,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028417839] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:12:00,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:12:00,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2023-11-29 22:12:00,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381942694] [2023-11-29 22:12:00,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:12:00,505 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-29 22:12:00,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:12:00,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-29 22:12:00,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1137, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 22:12:00,507 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 22:12:00,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 959 places, 2637 transitions, 87983 flow. Second operand has 37 states, 37 states have (on average 49.945945945945944) internal successors, (1848), 37 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:00,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:12:00,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 22:12:00,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:12:05,782 INFO L124 PetriNetUnfolderBase]: 1586/5828 cut-off events. [2023-11-29 22:12:05,782 INFO L125 PetriNetUnfolderBase]: For 90484/92278 co-relation queries the response was YES. [2023-11-29 22:12:05,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76610 conditions, 5828 events. 1586/5828 cut-off events. For 90484/92278 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 63659 event pairs, 6 based on Foata normal form. 53/5345 useless extension candidates. Maximal degree in co-relation 56494. Up to 3706 conditions per place. [2023-11-29 22:12:05,943 INFO L140 encePairwiseOnDemand]: 63/91 looper letters, 1238 selfloop transitions, 1085 changer transitions 694/3055 dead transitions. [2023-11-29 22:12:05,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1064 places, 3055 transitions, 108136 flow [2023-11-29 22:12:05,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-11-29 22:12:05,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2023-11-29 22:12:05,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 5466 transitions. [2023-11-29 22:12:05,948 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5666597553390006 [2023-11-29 22:12:05,948 INFO L72 ComplementDD]: Start complementDD. Operand 106 states and 5466 transitions. [2023-11-29 22:12:05,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 5466 transitions. [2023-11-29 22:12:05,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:12:05,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 106 states and 5466 transitions. [2023-11-29 22:12:05,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 107 states, 106 states have (on average 51.56603773584906) internal successors, (5466), 106 states have internal predecessors, (5466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:05,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 107 states, 107 states have (on average 91.0) internal successors, (9737), 107 states have internal predecessors, (9737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:05,962 INFO L81 ComplementDD]: Finished complementDD. Result has 107 states, 107 states have (on average 91.0) internal successors, (9737), 107 states have internal predecessors, (9737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:05,962 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 983 predicate places. [2023-11-29 22:12:05,962 INFO L500 AbstractCegarLoop]: Abstraction has has 1064 places, 3055 transitions, 108136 flow [2023-11-29 22:12:05,963 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 49.945945945945944) internal successors, (1848), 37 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:05,963 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:12:05,963 INFO L232 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] [2023-11-29 22:12:05,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 22:12:06,168 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,SelfDestructingSolverStorable16 [2023-11-29 22:12:06,168 INFO L425 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:12:06,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:12:06,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1560622059, now seen corresponding path program 12 times [2023-11-29 22:12:06,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:12:06,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643305828] [2023-11-29 22:12:06,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:12:06,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:12:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:12:06,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:12:06,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:12:06,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643305828] [2023-11-29 22:12:06,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643305828] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:12:06,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819360246] [2023-11-29 22:12:06,522 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 22:12:06,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:12:06,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:12:06,524 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) [2023-11-29 22:12:06,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 22:12:06,595 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-29 22:12:06,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:12:06,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 22:12:06,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:12:06,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:12:06,986 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:12:07,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:12:07,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819360246] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:12:07,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:12:07,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2023-11-29 22:12:07,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745364041] [2023-11-29 22:12:07,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:12:07,290 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-29 22:12:07,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:12:07,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-29 22:12:07,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1074, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 22:12:07,292 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 22:12:07,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1064 places, 3055 transitions, 108136 flow. Second operand has 36 states, 36 states have (on average 49.97222222222222) internal successors, (1799), 36 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:07,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:12:07,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 22:12:07,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:12:11,893 INFO L124 PetriNetUnfolderBase]: 1583/5890 cut-off events. [2023-11-29 22:12:11,894 INFO L125 PetriNetUnfolderBase]: For 103373/105372 co-relation queries the response was YES. [2023-11-29 22:12:11,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81464 conditions, 5890 events. 1583/5890 cut-off events. For 103373/105372 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 64769 event pairs, 7 based on Foata normal form. 59/5415 useless extension candidates. Maximal degree in co-relation 59986. Up to 3733 conditions per place. [2023-11-29 22:12:11,950 INFO L140 encePairwiseOnDemand]: 63/91 looper letters, 1455 selfloop transitions, 879 changer transitions 729/3101 dead transitions. [2023-11-29 22:12:11,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1125 places, 3101 transitions, 115906 flow [2023-11-29 22:12:11,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-11-29 22:12:11,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2023-11-29 22:12:11,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 3224 transitions. [2023-11-29 22:12:11,953 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2023-11-29 22:12:11,953 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 3224 transitions. [2023-11-29 22:12:11,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 3224 transitions. [2023-11-29 22:12:11,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:12:11,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 3224 transitions. [2023-11-29 22:12:11,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 52.0) internal successors, (3224), 62 states have internal predecessors, (3224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:11,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 91.0) internal successors, (5733), 63 states have internal predecessors, (5733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:11,961 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 91.0) internal successors, (5733), 63 states have internal predecessors, (5733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:11,961 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 1044 predicate places. [2023-11-29 22:12:11,961 INFO L500 AbstractCegarLoop]: Abstraction has has 1125 places, 3101 transitions, 115906 flow [2023-11-29 22:12:11,962 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 49.97222222222222) internal successors, (1799), 36 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:11,962 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:12:11,962 INFO L232 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] [2023-11-29 22:12:11,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-29 22:12:12,167 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,SelfDestructingSolverStorable17 [2023-11-29 22:12:12,167 INFO L425 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:12:12,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:12:12,168 INFO L85 PathProgramCache]: Analyzing trace with hash 808518937, now seen corresponding path program 13 times [2023-11-29 22:12:12,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:12:12,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366907581] [2023-11-29 22:12:12,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:12:12,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:12:12,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:12:12,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:12:12,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:12:12,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366907581] [2023-11-29 22:12:12,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366907581] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:12:12,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397378901] [2023-11-29 22:12:12,511 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 22:12:12,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:12:12,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:12:12,512 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) [2023-11-29 22:12:12,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 22:12:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:12:12,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 22:12:12,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:12:13,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:12:13,044 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:12:13,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:12:13,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397378901] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:12:13,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:12:13,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2023-11-29 22:12:13,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172292918] [2023-11-29 22:12:13,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:12:13,314 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 22:12:13,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:12:13,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 22:12:13,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1000, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 22:12:13,316 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 22:12:13,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1125 places, 3101 transitions, 115906 flow. Second operand has 35 states, 35 states have (on average 50.0) internal successors, (1750), 35 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:13,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:12:13,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 22:12:13,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:12:17,346 INFO L124 PetriNetUnfolderBase]: 1599/5950 cut-off events. [2023-11-29 22:12:17,346 INFO L125 PetriNetUnfolderBase]: For 113670/115430 co-relation queries the response was YES. [2023-11-29 22:12:17,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86536 conditions, 5950 events. 1599/5950 cut-off events. For 113670/115430 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 65640 event pairs, 15 based on Foata normal form. 61/5469 useless extension candidates. Maximal degree in co-relation 63775. Up to 3771 conditions per place. [2023-11-29 22:12:17,400 INFO L140 encePairwiseOnDemand]: 65/91 looper letters, 1573 selfloop transitions, 772 changer transitions 740/3123 dead transitions. [2023-11-29 22:12:17,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1170 places, 3123 transitions, 122906 flow [2023-11-29 22:12:17,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-29 22:12:17,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-11-29 22:12:17,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 2359 transitions. [2023-11-29 22:12:17,402 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5635451505016722 [2023-11-29 22:12:17,402 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 2359 transitions. [2023-11-29 22:12:17,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 2359 transitions. [2023-11-29 22:12:17,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:12:17,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 2359 transitions. [2023-11-29 22:12:17,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 51.28260869565217) internal successors, (2359), 46 states have internal predecessors, (2359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:17,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 91.0) internal successors, (4277), 47 states have internal predecessors, (4277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:17,408 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 91.0) internal successors, (4277), 47 states have internal predecessors, (4277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:17,408 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 1089 predicate places. [2023-11-29 22:12:17,409 INFO L500 AbstractCegarLoop]: Abstraction has has 1170 places, 3123 transitions, 122906 flow [2023-11-29 22:12:17,409 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 50.0) internal successors, (1750), 35 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:17,409 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:12:17,409 INFO L232 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] [2023-11-29 22:12:17,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-29 22:12:17,614 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:12:17,614 INFO L425 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:12:17,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:12:17,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1989479053, now seen corresponding path program 14 times [2023-11-29 22:12:17,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:12:17,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907475095] [2023-11-29 22:12:17,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:12:17,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:12:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:12:17,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:12:17,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:12:17,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907475095] [2023-11-29 22:12:17,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907475095] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:12:17,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80545237] [2023-11-29 22:12:17,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 22:12:17,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:12:17,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:12:17,946 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) [2023-11-29 22:12:17,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 22:12:18,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 22:12:18,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:12:18,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 22:12:18,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:12:18,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:12:18,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:12:18,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:12:18,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80545237] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:12:18,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:12:18,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2023-11-29 22:12:18,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702729766] [2023-11-29 22:12:18,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:12:18,756 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-29 22:12:18,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:12:18,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-29 22:12:18,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1113, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 22:12:18,758 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 22:12:18,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1170 places, 3123 transitions, 122906 flow. Second operand has 37 states, 37 states have (on average 49.945945945945944) internal successors, (1848), 37 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:18,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:12:18,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 22:12:18,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:12:23,482 INFO L124 PetriNetUnfolderBase]: 1611/5998 cut-off events. [2023-11-29 22:12:23,482 INFO L125 PetriNetUnfolderBase]: For 125332/127172 co-relation queries the response was YES. [2023-11-29 22:12:23,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91718 conditions, 5998 events. 1611/5998 cut-off events. For 125332/127172 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 66244 event pairs, 6 based on Foata normal form. 54/5509 useless extension candidates. Maximal degree in co-relation 67699. Up to 3810 conditions per place. [2023-11-29 22:12:23,544 INFO L140 encePairwiseOnDemand]: 63/91 looper letters, 1542 selfloop transitions, 825 changer transitions 751/3156 dead transitions. [2023-11-29 22:12:23,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1219 places, 3156 transitions, 130456 flow [2023-11-29 22:12:23,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-11-29 22:12:23,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-11-29 22:12:23,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 2578 transitions. [2023-11-29 22:12:23,546 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5665934065934066 [2023-11-29 22:12:23,546 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 2578 transitions. [2023-11-29 22:12:23,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 2578 transitions. [2023-11-29 22:12:23,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:12:23,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 2578 transitions. [2023-11-29 22:12:23,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 51.56) internal successors, (2578), 50 states have internal predecessors, (2578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:23,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 91.0) internal successors, (4641), 51 states have internal predecessors, (4641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:23,552 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 91.0) internal successors, (4641), 51 states have internal predecessors, (4641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:23,552 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 1138 predicate places. [2023-11-29 22:12:23,552 INFO L500 AbstractCegarLoop]: Abstraction has has 1219 places, 3156 transitions, 130456 flow [2023-11-29 22:12:23,553 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 49.945945945945944) internal successors, (1848), 37 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:23,553 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:12:23,553 INFO L232 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] [2023-11-29 22:12:23,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-29 22:12:23,758 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:12:23,758 INFO L425 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:12:23,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:12:23,758 INFO L85 PathProgramCache]: Analyzing trace with hash -434984459, now seen corresponding path program 15 times [2023-11-29 22:12:23,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:12:23,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423215082] [2023-11-29 22:12:23,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:12:23,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:12:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:12:24,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:12:24,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:12:24,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423215082] [2023-11-29 22:12:24,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423215082] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:12:24,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531963322] [2023-11-29 22:12:24,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 22:12:24,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:12:24,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:12:24,222 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) [2023-11-29 22:12:24,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 22:12:24,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 22:12:24,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:12:24,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 22:12:24,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:12:24,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:12:24,665 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:12:24,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:12:24,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531963322] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:12:24,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:12:24,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2023-11-29 22:12:24,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484259085] [2023-11-29 22:12:24,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:12:24,970 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-29 22:12:24,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:12:24,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-29 22:12:24,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1113, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 22:12:24,972 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 22:12:24,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1219 places, 3156 transitions, 130456 flow. Second operand has 37 states, 37 states have (on average 49.945945945945944) internal successors, (1848), 37 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:24,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:12:24,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 22:12:24,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:12:29,658 INFO L124 PetriNetUnfolderBase]: 1609/6068 cut-off events. [2023-11-29 22:12:29,658 INFO L125 PetriNetUnfolderBase]: For 139822/141812 co-relation queries the response was YES. [2023-11-29 22:12:29,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96802 conditions, 6068 events. 1609/6068 cut-off events. For 139822/141812 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 67483 event pairs, 9 based on Foata normal form. 55/5583 useless extension candidates. Maximal degree in co-relation 71267. Up to 3828 conditions per place. [2023-11-29 22:12:29,725 INFO L140 encePairwiseOnDemand]: 65/91 looper letters, 1573 selfloop transitions, 807 changer transitions 774/3192 dead transitions. [2023-11-29 22:12:29,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1271 places, 3192 transitions, 138282 flow [2023-11-29 22:12:29,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-29 22:12:29,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2023-11-29 22:12:29,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 2725 transitions. [2023-11-29 22:12:29,727 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5650010366991499 [2023-11-29 22:12:29,727 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 2725 transitions. [2023-11-29 22:12:29,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 2725 transitions. [2023-11-29 22:12:29,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:12:29,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 2725 transitions. [2023-11-29 22:12:29,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 51.41509433962264) internal successors, (2725), 53 states have internal predecessors, (2725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:29,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 91.0) internal successors, (4914), 54 states have internal predecessors, (4914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:29,734 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 91.0) internal successors, (4914), 54 states have internal predecessors, (4914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:29,734 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 1190 predicate places. [2023-11-29 22:12:29,735 INFO L500 AbstractCegarLoop]: Abstraction has has 1271 places, 3192 transitions, 138282 flow [2023-11-29 22:12:29,735 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 49.945945945945944) internal successors, (1848), 37 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:29,735 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:12:29,735 INFO L232 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] [2023-11-29 22:12:29,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-29 22:12:29,940 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:12:29,940 INFO L425 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:12:29,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:12:29,940 INFO L85 PathProgramCache]: Analyzing trace with hash 635011413, now seen corresponding path program 16 times [2023-11-29 22:12:29,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:12:29,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623769635] [2023-11-29 22:12:29,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:12:29,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:12:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:12:30,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:12:30,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:12:30,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623769635] [2023-11-29 22:12:30,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623769635] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:12:30,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735541651] [2023-11-29 22:12:30,192 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 22:12:30,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:12:30,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:12:30,193 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) [2023-11-29 22:12:30,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 22:12:30,252 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 22:12:30,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:12:30,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 22:12:30,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:12:30,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:12:30,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:12:30,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:12:30,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735541651] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:12:30,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:12:30,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2023-11-29 22:12:30,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301997321] [2023-11-29 22:12:30,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:12:30,988 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-29 22:12:30,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:12:30,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-29 22:12:30,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1131, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 22:12:30,990 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 22:12:30,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1271 places, 3192 transitions, 138282 flow. Second operand has 37 states, 37 states have (on average 49.945945945945944) internal successors, (1848), 37 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:30,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:12:30,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 22:12:30,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:12:36,118 INFO L124 PetriNetUnfolderBase]: 1625/6157 cut-off events. [2023-11-29 22:12:36,118 INFO L125 PetriNetUnfolderBase]: For 155846/158082 co-relation queries the response was YES. [2023-11-29 22:12:36,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102389 conditions, 6157 events. 1625/6157 cut-off events. For 155846/158082 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 68789 event pairs, 7 based on Foata normal form. 72/5682 useless extension candidates. Maximal degree in co-relation 75294. Up to 3867 conditions per place. [2023-11-29 22:12:36,180 INFO L140 encePairwiseOnDemand]: 63/91 looper letters, 1458 selfloop transitions, 954 changer transitions 794/3244 dead transitions. [2023-11-29 22:12:36,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1342 places, 3244 transitions, 146979 flow [2023-11-29 22:12:36,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-11-29 22:12:36,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2023-11-29 22:12:36,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 3732 transitions. [2023-11-29 22:12:36,183 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5695970695970696 [2023-11-29 22:12:36,183 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 3732 transitions. [2023-11-29 22:12:36,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 3732 transitions. [2023-11-29 22:12:36,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:12:36,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 3732 transitions. [2023-11-29 22:12:36,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 73 states, 72 states have (on average 51.833333333333336) internal successors, (3732), 72 states have internal predecessors, (3732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:36,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 73 states, 73 states have (on average 91.0) internal successors, (6643), 73 states have internal predecessors, (6643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:36,190 INFO L81 ComplementDD]: Finished complementDD. Result has 73 states, 73 states have (on average 91.0) internal successors, (6643), 73 states have internal predecessors, (6643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:36,190 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 1261 predicate places. [2023-11-29 22:12:36,190 INFO L500 AbstractCegarLoop]: Abstraction has has 1342 places, 3244 transitions, 146979 flow [2023-11-29 22:12:36,191 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 49.945945945945944) internal successors, (1848), 37 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:36,191 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:12:36,191 INFO L232 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] [2023-11-29 22:12:36,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-29 22:12:36,399 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,SelfDestructingSolverStorable21 [2023-11-29 22:12:36,399 INFO L425 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:12:36,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:12:36,399 INFO L85 PathProgramCache]: Analyzing trace with hash -998913575, now seen corresponding path program 17 times [2023-11-29 22:12:36,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:12:36,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895616093] [2023-11-29 22:12:36,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:12:36,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:12:36,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:12:36,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:12:36,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:12:36,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895616093] [2023-11-29 22:12:36,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895616093] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:12:36,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001662753] [2023-11-29 22:12:36,730 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 22:12:36,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:12:36,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:12:36,731 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) [2023-11-29 22:12:36,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 22:12:36,790 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 22:12:36,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:12:36,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 22:12:36,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:12:37,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:12:37,129 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:12:37,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:12:37,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001662753] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:12:37,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:12:37,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2023-11-29 22:12:37,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560873784] [2023-11-29 22:12:37,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:12:37,445 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-29 22:12:37,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:12:37,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-29 22:12:37,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1131, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 22:12:37,447 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 22:12:37,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1342 places, 3244 transitions, 146979 flow. Second operand has 37 states, 37 states have (on average 49.945945945945944) internal successors, (1848), 37 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:37,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:12:37,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 22:12:37,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:12:45,633 INFO L124 PetriNetUnfolderBase]: 1714/6432 cut-off events. [2023-11-29 22:12:45,633 INFO L125 PetriNetUnfolderBase]: For 176686/179015 co-relation queries the response was YES. [2023-11-29 22:12:45,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111905 conditions, 6432 events. 1714/6432 cut-off events. For 176686/179015 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 72294 event pairs, 6 based on Foata normal form. 78/5944 useless extension candidates. Maximal degree in co-relation 82448. Up to 4065 conditions per place. [2023-11-29 22:12:45,705 INFO L140 encePairwiseOnDemand]: 63/91 looper letters, 1362 selfloop transitions, 1228 changer transitions 829/3457 dead transitions. [2023-11-29 22:12:45,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1473 places, 3457 transitions, 163492 flow [2023-11-29 22:12:45,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2023-11-29 22:12:45,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2023-11-29 22:12:45,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 6781 transitions. [2023-11-29 22:12:45,710 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5645188145188145 [2023-11-29 22:12:45,710 INFO L72 ComplementDD]: Start complementDD. Operand 132 states and 6781 transitions. [2023-11-29 22:12:45,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 132 states and 6781 transitions. [2023-11-29 22:12:45,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:12:45,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 132 states and 6781 transitions. [2023-11-29 22:12:45,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 133 states, 132 states have (on average 51.371212121212125) internal successors, (6781), 132 states have internal predecessors, (6781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:45,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 133 states, 133 states have (on average 91.0) internal successors, (12103), 133 states have internal predecessors, (12103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:45,720 INFO L81 ComplementDD]: Finished complementDD. Result has 133 states, 133 states have (on average 91.0) internal successors, (12103), 133 states have internal predecessors, (12103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:45,721 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 1392 predicate places. [2023-11-29 22:12:45,721 INFO L500 AbstractCegarLoop]: Abstraction has has 1473 places, 3457 transitions, 163492 flow [2023-11-29 22:12:45,721 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 49.945945945945944) internal successors, (1848), 37 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:45,721 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:12:45,721 INFO L232 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] [2023-11-29 22:12:45,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-29 22:12:45,922 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:12:45,922 INFO L425 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:12:45,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:12:45,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1365429493, now seen corresponding path program 18 times [2023-11-29 22:12:45,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:12:45,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741300113] [2023-11-29 22:12:45,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:12:45,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:12:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:12:46,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:12:46,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:12:46,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741300113] [2023-11-29 22:12:46,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741300113] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:12:46,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10294876] [2023-11-29 22:12:46,442 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 22:12:46,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:12:46,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:12:46,443 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) [2023-11-29 22:12:46,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 22:12:46,502 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-29 22:12:46,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:12:46,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 22:12:46,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:12:46,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:12:46,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:12:47,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:12:47,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10294876] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:12:47,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:12:47,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2023-11-29 22:12:47,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778415453] [2023-11-29 22:12:47,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:12:47,179 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-29 22:12:47,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:12:47,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-29 22:12:47,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1140, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 22:12:47,181 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 22:12:47,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1473 places, 3457 transitions, 163492 flow. Second operand has 37 states, 37 states have (on average 49.945945945945944) internal successors, (1848), 37 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:47,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:12:47,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 22:12:47,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:12:54,738 INFO L124 PetriNetUnfolderBase]: 1760/6673 cut-off events. [2023-11-29 22:12:54,738 INFO L125 PetriNetUnfolderBase]: For 201006/203612 co-relation queries the response was YES. [2023-11-29 22:12:54,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120371 conditions, 6673 events. 1760/6673 cut-off events. For 201006/203612 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 75839 event pairs, 8 based on Foata normal form. 74/6165 useless extension candidates. Maximal degree in co-relation 88479. Up to 4208 conditions per place. [2023-11-29 22:12:54,804 INFO L140 encePairwiseOnDemand]: 63/91 looper letters, 1479 selfloop transitions, 1195 changer transitions 866/3578 dead transitions. [2023-11-29 22:12:54,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1574 places, 3578 transitions, 176389 flow [2023-11-29 22:12:54,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2023-11-29 22:12:54,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2023-11-29 22:12:54,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 5237 transitions. [2023-11-29 22:12:54,808 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5642102995044171 [2023-11-29 22:12:54,808 INFO L72 ComplementDD]: Start complementDD. Operand 102 states and 5237 transitions. [2023-11-29 22:12:54,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 102 states and 5237 transitions. [2023-11-29 22:12:54,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:12:54,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 102 states and 5237 transitions. [2023-11-29 22:12:54,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 103 states, 102 states have (on average 51.34313725490196) internal successors, (5237), 102 states have internal predecessors, (5237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:54,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 103 states, 103 states have (on average 91.0) internal successors, (9373), 103 states have internal predecessors, (9373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:54,816 INFO L81 ComplementDD]: Finished complementDD. Result has 103 states, 103 states have (on average 91.0) internal successors, (9373), 103 states have internal predecessors, (9373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:54,816 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 1493 predicate places. [2023-11-29 22:12:54,816 INFO L500 AbstractCegarLoop]: Abstraction has has 1574 places, 3578 transitions, 176389 flow [2023-11-29 22:12:54,817 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 49.945945945945944) internal successors, (1848), 37 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:54,817 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:12:54,817 INFO L232 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] [2023-11-29 22:12:54,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-29 22:12:55,017 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:12:55,017 INFO L425 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:12:55,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:12:55,018 INFO L85 PathProgramCache]: Analyzing trace with hash 2037798337, now seen corresponding path program 19 times [2023-11-29 22:12:55,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:12:55,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484217779] [2023-11-29 22:12:55,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:12:55,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:12:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:12:55,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:12:55,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:12:55,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484217779] [2023-11-29 22:12:55,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484217779] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:12:55,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947895904] [2023-11-29 22:12:55,263 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 22:12:55,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:12:55,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:12:55,264 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) [2023-11-29 22:12:55,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 22:12:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:12:55,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 22:12:55,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:12:55,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:12:55,672 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:12:55,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:12:55,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947895904] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:12:55,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:12:55,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2023-11-29 22:12:55,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315625052] [2023-11-29 22:12:55,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:12:55,968 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-29 22:12:55,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:12:55,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-29 22:12:55,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1130, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 22:12:55,970 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 22:12:55,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1574 places, 3578 transitions, 176389 flow. Second operand has 37 states, 37 states have (on average 49.91891891891892) internal successors, (1847), 37 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:12:55,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:12:55,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 22:12:55,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:13:04,350 INFO L124 PetriNetUnfolderBase]: 2045/7416 cut-off events. [2023-11-29 22:13:04,350 INFO L125 PetriNetUnfolderBase]: For 233960/236640 co-relation queries the response was YES. [2023-11-29 22:13:04,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140074 conditions, 7416 events. 2045/7416 cut-off events. For 233960/236640 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 84108 event pairs, 4 based on Foata normal form. 97/6875 useless extension candidates. Maximal degree in co-relation 104630. Up to 4745 conditions per place. [2023-11-29 22:13:04,436 INFO L140 encePairwiseOnDemand]: 63/91 looper letters, 1622 selfloop transitions, 1430 changer transitions 896/3986 dead transitions. [2023-11-29 22:13:04,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1665 places, 3986 transitions, 204526 flow [2023-11-29 22:13:04,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2023-11-29 22:13:04,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2023-11-29 22:13:04,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 4892 transitions. [2023-11-29 22:13:04,439 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5780456103036749 [2023-11-29 22:13:04,439 INFO L72 ComplementDD]: Start complementDD. Operand 93 states and 4892 transitions. [2023-11-29 22:13:04,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 93 states and 4892 transitions. [2023-11-29 22:13:04,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:13:04,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 93 states and 4892 transitions. [2023-11-29 22:13:04,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 94 states, 93 states have (on average 52.60215053763441) internal successors, (4892), 93 states have internal predecessors, (4892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:13:04,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 94 states, 94 states have (on average 91.0) internal successors, (8554), 94 states have internal predecessors, (8554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:13:04,448 INFO L81 ComplementDD]: Finished complementDD. Result has 94 states, 94 states have (on average 91.0) internal successors, (8554), 94 states have internal predecessors, (8554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:13:04,449 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 1584 predicate places. [2023-11-29 22:13:04,449 INFO L500 AbstractCegarLoop]: Abstraction has has 1665 places, 3986 transitions, 204526 flow [2023-11-29 22:13:04,449 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 49.91891891891892) internal successors, (1847), 37 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:13:04,449 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:13:04,449 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:13:04,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 22:13:04,649 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:13:04,650 INFO L425 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:13:04,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:13:04,650 INFO L85 PathProgramCache]: Analyzing trace with hash -296501615, now seen corresponding path program 20 times [2023-11-29 22:13:04,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:13:04,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180580567] [2023-11-29 22:13:04,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:13:04,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:13:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:13:04,960 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:13:04,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:13:04,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180580567] [2023-11-29 22:13:04,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180580567] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:13:04,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320972060] [2023-11-29 22:13:04,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 22:13:04,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:13:04,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:13:04,961 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) [2023-11-29 22:13:04,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 22:13:05,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 22:13:05,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:13:05,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 22:13:05,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:13:05,466 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:13:05,466 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:13:05,873 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:13:05,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320972060] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:13:05,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:13:05,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2023-11-29 22:13:05,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370984400] [2023-11-29 22:13:05,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:13:05,874 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 22:13:05,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:13:05,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 22:13:05,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1849, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 22:13:05,876 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 22:13:05,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1665 places, 3986 transitions, 204526 flow. Second operand has 46 states, 46 states have (on average 49.891304347826086) internal successors, (2295), 46 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:13:05,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:13:05,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 22:13:05,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:13:15,930 INFO L124 PetriNetUnfolderBase]: 2271/8074 cut-off events. [2023-11-29 22:13:15,930 INFO L125 PetriNetUnfolderBase]: For 268223/271079 co-relation queries the response was YES. [2023-11-29 22:13:15,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159948 conditions, 8074 events. 2271/8074 cut-off events. For 268223/271079 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 91748 event pairs, 13 based on Foata normal form. 103/7470 useless extension candidates. Maximal degree in co-relation 121027. Up to 5251 conditions per place. [2023-11-29 22:13:16,255 INFO L140 encePairwiseOnDemand]: 65/91 looper letters, 1829 selfloop transitions, 1526 changer transitions 961/4354 dead transitions. [2023-11-29 22:13:16,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1762 places, 4354 transitions, 232174 flow [2023-11-29 22:13:16,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2023-11-29 22:13:16,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2023-11-29 22:13:16,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 5109 transitions. [2023-11-29 22:13:16,258 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5728862973760933 [2023-11-29 22:13:16,258 INFO L72 ComplementDD]: Start complementDD. Operand 98 states and 5109 transitions. [2023-11-29 22:13:16,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 98 states and 5109 transitions. [2023-11-29 22:13:16,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:13:16,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 98 states and 5109 transitions. [2023-11-29 22:13:16,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 99 states, 98 states have (on average 52.13265306122449) internal successors, (5109), 98 states have internal predecessors, (5109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:13:16,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 99 states, 99 states have (on average 91.0) internal successors, (9009), 99 states have internal predecessors, (9009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:13:16,267 INFO L81 ComplementDD]: Finished complementDD. Result has 99 states, 99 states have (on average 91.0) internal successors, (9009), 99 states have internal predecessors, (9009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:13:16,267 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 1681 predicate places. [2023-11-29 22:13:16,267 INFO L500 AbstractCegarLoop]: Abstraction has has 1762 places, 4354 transitions, 232174 flow [2023-11-29 22:13:16,268 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 49.891304347826086) internal successors, (2295), 46 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:13:16,268 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:13:16,268 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:13:16,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-29 22:13:16,469 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,SelfDestructingSolverStorable25 [2023-11-29 22:13:16,469 INFO L425 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:13:16,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:13:16,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1976275819, now seen corresponding path program 21 times [2023-11-29 22:13:16,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:13:16,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226276501] [2023-11-29 22:13:16,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:13:16,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:13:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:13:16,817 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:13:16,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:13:16,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226276501] [2023-11-29 22:13:16,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226276501] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:13:16,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732188062] [2023-11-29 22:13:16,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 22:13:16,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:13:16,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:13:16,820 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) [2023-11-29 22:13:16,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 22:13:16,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 22:13:16,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:13:16,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 22:13:16,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:13:17,347 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:13:17,347 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:13:17,758 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:13:17,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732188062] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:13:17,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:13:17,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2023-11-29 22:13:17,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896219442] [2023-11-29 22:13:17,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:13:17,759 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 22:13:17,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:13:17,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 22:13:17,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1844, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 22:13:17,761 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 22:13:17,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1762 places, 4354 transitions, 232174 flow. Second operand has 46 states, 46 states have (on average 49.891304347826086) internal successors, (2295), 46 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:13:17,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:13:17,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 22:13:17,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:13:32,486 INFO L124 PetriNetUnfolderBase]: 2448/8928 cut-off events. [2023-11-29 22:13:32,486 INFO L125 PetriNetUnfolderBase]: For 325441/328723 co-relation queries the response was YES. [2023-11-29 22:13:32,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181400 conditions, 8928 events. 2448/8928 cut-off events. For 325441/328723 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 104350 event pairs, 11 based on Foata normal form. 85/8241 useless extension candidates. Maximal degree in co-relation 133994. Up to 5765 conditions per place. [2023-11-29 22:13:32,601 INFO L140 encePairwiseOnDemand]: 64/91 looper letters, 2073 selfloop transitions, 1634 changer transitions 1035/4780 dead transitions. [2023-11-29 22:13:32,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1900 places, 4780 transitions, 264689 flow [2023-11-29 22:13:32,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2023-11-29 22:13:32,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2023-11-29 22:13:32,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 7278 transitions. [2023-11-29 22:13:32,605 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5753814530792948 [2023-11-29 22:13:32,605 INFO L72 ComplementDD]: Start complementDD. Operand 139 states and 7278 transitions. [2023-11-29 22:13:32,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 139 states and 7278 transitions. [2023-11-29 22:13:32,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:13:32,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 139 states and 7278 transitions. [2023-11-29 22:13:32,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 140 states, 139 states have (on average 52.35971223021583) internal successors, (7278), 139 states have internal predecessors, (7278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:13:32,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 140 states, 140 states have (on average 91.0) internal successors, (12740), 140 states have internal predecessors, (12740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:13:32,617 INFO L81 ComplementDD]: Finished complementDD. Result has 140 states, 140 states have (on average 91.0) internal successors, (12740), 140 states have internal predecessors, (12740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:13:32,617 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 1819 predicate places. [2023-11-29 22:13:32,618 INFO L500 AbstractCegarLoop]: Abstraction has has 1900 places, 4780 transitions, 264689 flow [2023-11-29 22:13:32,618 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 49.891304347826086) internal successors, (2295), 46 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:13:32,618 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:13:32,618 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:13:32,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-29 22:13:32,819 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 22:13:32,819 INFO L425 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:13:32,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:13:32,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1466037585, now seen corresponding path program 22 times [2023-11-29 22:13:32,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:13:32,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888801450] [2023-11-29 22:13:32,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:13:32,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:13:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:13:33,276 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:13:33,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:13:33,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888801450] [2023-11-29 22:13:33,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888801450] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:13:33,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953040692] [2023-11-29 22:13:33,276 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 22:13:33,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:13:33,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:13:33,277 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) [2023-11-29 22:13:33,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 22:13:33,350 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 22:13:33,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:13:33,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 22:13:33,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:13:33,783 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:13:33,784 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:13:34,190 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:13:34,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953040692] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:13:34,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:13:34,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2023-11-29 22:13:34,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395451987] [2023-11-29 22:13:34,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:13:34,191 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 22:13:34,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:13:34,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 22:13:34,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=1831, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 22:13:34,194 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 22:13:34,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1900 places, 4780 transitions, 264689 flow. Second operand has 46 states, 46 states have (on average 49.91304347826087) internal successors, (2296), 46 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:13:34,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:13:34,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 22:13:34,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:13:49,938 INFO L124 PetriNetUnfolderBase]: 2482/9135 cut-off events. [2023-11-29 22:13:49,938 INFO L125 PetriNetUnfolderBase]: For 362979/366824 co-relation queries the response was YES. [2023-11-29 22:13:49,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192166 conditions, 9135 events. 2482/9135 cut-off events. For 362979/366824 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 107385 event pairs, 11 based on Foata normal form. 95/8445 useless extension candidates. Maximal degree in co-relation 139914. Up to 5905 conditions per place. [2023-11-29 22:13:50,057 INFO L140 encePairwiseOnDemand]: 65/91 looper letters, 2060 selfloop transitions, 1711 changer transitions 1068/4877 dead transitions. [2023-11-29 22:13:50,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2024 places, 4877 transitions, 279877 flow [2023-11-29 22:13:50,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2023-11-29 22:13:50,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2023-11-29 22:13:50,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 6533 transitions. [2023-11-29 22:13:50,061 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5743296703296703 [2023-11-29 22:13:50,061 INFO L72 ComplementDD]: Start complementDD. Operand 125 states and 6533 transitions. [2023-11-29 22:13:50,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 125 states and 6533 transitions. [2023-11-29 22:13:50,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:13:50,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 125 states and 6533 transitions. [2023-11-29 22:13:50,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 126 states, 125 states have (on average 52.264) internal successors, (6533), 125 states have internal predecessors, (6533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:13:50,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 126 states, 126 states have (on average 91.0) internal successors, (11466), 126 states have internal predecessors, (11466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:13:50,077 INFO L81 ComplementDD]: Finished complementDD. Result has 126 states, 126 states have (on average 91.0) internal successors, (11466), 126 states have internal predecessors, (11466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:13:50,083 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 1943 predicate places. [2023-11-29 22:13:50,083 INFO L500 AbstractCegarLoop]: Abstraction has has 2024 places, 4877 transitions, 279877 flow [2023-11-29 22:13:50,083 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 49.91304347826087) internal successors, (2296), 46 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:13:50,083 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:13:50,084 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:13:50,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-29 22:13:50,290 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 22:13:50,291 INFO L425 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:13:50,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:13:50,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1642765939, now seen corresponding path program 23 times [2023-11-29 22:13:50,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:13:50,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330275510] [2023-11-29 22:13:50,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:13:50,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:13:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:13:50,644 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:13:50,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:13:50,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330275510] [2023-11-29 22:13:50,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330275510] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:13:50,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081545883] [2023-11-29 22:13:50,645 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 22:13:50,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:13:50,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:13:50,646 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) [2023-11-29 22:13:50,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 22:13:50,707 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-29 22:13:50,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:13:50,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 22:13:50,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:13:51,150 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:13:51,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:13:51,605 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:13:51,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081545883] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:13:51,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:13:51,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 45 [2023-11-29 22:13:51,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733630151] [2023-11-29 22:13:51,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:13:51,606 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-29 22:13:51,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:13:51,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-29 22:13:51,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1779, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 22:13:51,608 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 22:13:51,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2024 places, 4877 transitions, 279877 flow. Second operand has 45 states, 45 states have (on average 49.888888888888886) internal successors, (2245), 45 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:13:51,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:13:51,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 22:13:51,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:14:11,232 INFO L124 PetriNetUnfolderBase]: 2588/9708 cut-off events. [2023-11-29 22:14:11,232 INFO L125 PetriNetUnfolderBase]: For 424722/429172 co-relation queries the response was YES. [2023-11-29 22:14:11,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210657 conditions, 9708 events. 2588/9708 cut-off events. For 424722/429172 co-relation queries the response was YES. Maximal size of possible extension queue 663. Compared 116318 event pairs, 12 based on Foata normal form. 104/8987 useless extension candidates. Maximal degree in co-relation 150152. Up to 6274 conditions per place. [2023-11-29 22:14:11,355 INFO L140 encePairwiseOnDemand]: 63/91 looper letters, 2135 selfloop transitions, 1831 changer transitions 1184/5188 dead transitions. [2023-11-29 22:14:11,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2174 places, 5188 transitions, 308362 flow [2023-11-29 22:14:11,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2023-11-29 22:14:11,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2023-11-29 22:14:11,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 7891 transitions. [2023-11-29 22:14:11,360 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5742667928098392 [2023-11-29 22:14:11,360 INFO L72 ComplementDD]: Start complementDD. Operand 151 states and 7891 transitions. [2023-11-29 22:14:11,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 151 states and 7891 transitions. [2023-11-29 22:14:11,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:14:11,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 151 states and 7891 transitions. [2023-11-29 22:14:11,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 152 states, 151 states have (on average 52.258278145695364) internal successors, (7891), 151 states have internal predecessors, (7891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:14:11,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 152 states, 152 states have (on average 91.0) internal successors, (13832), 152 states have internal predecessors, (13832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:14:11,377 INFO L81 ComplementDD]: Finished complementDD. Result has 152 states, 152 states have (on average 91.0) internal successors, (13832), 152 states have internal predecessors, (13832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:14:11,378 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 2093 predicate places. [2023-11-29 22:14:11,378 INFO L500 AbstractCegarLoop]: Abstraction has has 2174 places, 5188 transitions, 308362 flow [2023-11-29 22:14:11,379 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 49.888888888888886) internal successors, (2245), 45 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:14:11,379 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:14:11,379 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:14:11,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-29 22:14:11,584 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:14:11,585 INFO L425 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:14:11,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:14:11,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1688963545, now seen corresponding path program 24 times [2023-11-29 22:14:11,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:14:11,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007512178] [2023-11-29 22:14:11,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:14:11,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:14:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:14:11,857 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:14:11,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:14:11,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007512178] [2023-11-29 22:14:11,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007512178] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:14:11,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384441398] [2023-11-29 22:14:11,858 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 22:14:11,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:14:11,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:14:11,859 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 22:14:11,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 22:14:11,936 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-29 22:14:11,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:14:11,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 22:14:11,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:14:12,373 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:14:12,373 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:14:12,778 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:14:12,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384441398] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:14:12,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:14:12,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2023-11-29 22:14:12,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459548254] [2023-11-29 22:14:12,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:14:12,779 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 22:14:12,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:14:12,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 22:14:12,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1860, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 22:14:12,781 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 22:14:12,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2174 places, 5188 transitions, 308362 flow. Second operand has 46 states, 46 states have (on average 49.891304347826086) internal successors, (2295), 46 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:14:12,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:14:12,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 22:14:12,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:14:34,812 INFO L124 PetriNetUnfolderBase]: 3150/11619 cut-off events. [2023-11-29 22:14:34,813 INFO L125 PetriNetUnfolderBase]: For 537306/542670 co-relation queries the response was YES. [2023-11-29 22:14:34,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260662 conditions, 11619 events. 3150/11619 cut-off events. For 537306/542670 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 142664 event pairs, 16 based on Foata normal form. 80/10683 useless extension candidates. Maximal degree in co-relation 187873. Up to 7575 conditions per place. [2023-11-29 22:14:34,969 INFO L140 encePairwiseOnDemand]: 64/91 looper letters, 2576 selfloop transitions, 2269 changer transitions 1281/6164 dead transitions. [2023-11-29 22:14:34,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2326 places, 6164 transitions, 379006 flow [2023-11-29 22:14:34,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2023-11-29 22:14:34,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2023-11-29 22:14:34,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 7947 transitions. [2023-11-29 22:14:34,973 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5707821590174531 [2023-11-29 22:14:34,973 INFO L72 ComplementDD]: Start complementDD. Operand 153 states and 7947 transitions. [2023-11-29 22:14:34,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 153 states and 7947 transitions. [2023-11-29 22:14:34,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:14:34,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 153 states and 7947 transitions. [2023-11-29 22:14:34,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 154 states, 153 states have (on average 51.94117647058823) internal successors, (7947), 153 states have internal predecessors, (7947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:14:34,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 154 states, 154 states have (on average 91.0) internal successors, (14014), 154 states have internal predecessors, (14014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:14:34,985 INFO L81 ComplementDD]: Finished complementDD. Result has 154 states, 154 states have (on average 91.0) internal successors, (14014), 154 states have internal predecessors, (14014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:14:34,985 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 2245 predicate places. [2023-11-29 22:14:34,985 INFO L500 AbstractCegarLoop]: Abstraction has has 2326 places, 6164 transitions, 379006 flow [2023-11-29 22:14:34,986 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 49.891304347826086) internal successors, (2295), 46 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:14:34,986 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:14:34,986 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:14:34,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-29 22:14:35,194 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:14:35,195 INFO L425 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:14:35,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:14:35,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1686863149, now seen corresponding path program 25 times [2023-11-29 22:14:35,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:14:35,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623824530] [2023-11-29 22:14:35,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:14:35,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:14:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:14:35,449 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:14:35,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:14:35,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623824530] [2023-11-29 22:14:35,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623824530] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:14:35,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715871760] [2023-11-29 22:14:35,449 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 22:14:35,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:14:35,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:14:35,451 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 22:14:35,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 22:14:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:14:35,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 22:14:35,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:14:35,954 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:14:35,954 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:14:36,344 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:14:36,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715871760] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:14:36,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:14:36,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2023-11-29 22:14:36,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143026413] [2023-11-29 22:14:36,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:14:36,345 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 22:14:36,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:14:36,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 22:14:36,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1848, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 22:14:36,347 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 22:14:36,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2326 places, 6164 transitions, 379006 flow. Second operand has 46 states, 46 states have (on average 49.891304347826086) internal successors, (2295), 46 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:14:36,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:14:36,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 22:14:36,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:15:01,389 INFO L124 PetriNetUnfolderBase]: 3224/11957 cut-off events. [2023-11-29 22:15:01,389 INFO L125 PetriNetUnfolderBase]: For 591271/597229 co-relation queries the response was YES. [2023-11-29 22:15:01,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276945 conditions, 11957 events. 3224/11957 cut-off events. For 591271/597229 co-relation queries the response was YES. Maximal size of possible extension queue 833. Compared 148042 event pairs, 12 based on Foata normal form. 68/10979 useless extension candidates. Maximal degree in co-relation 199178. Up to 7810 conditions per place. [2023-11-29 22:15:01,563 INFO L140 encePairwiseOnDemand]: 64/91 looper letters, 2829 selfloop transitions, 2155 changer transitions 1323/6345 dead transitions. [2023-11-29 22:15:01,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2450 places, 6345 transitions, 402875 flow [2023-11-29 22:15:01,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2023-11-29 22:15:01,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2023-11-29 22:15:01,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 6479 transitions. [2023-11-29 22:15:01,566 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5695824175824176 [2023-11-29 22:15:01,567 INFO L72 ComplementDD]: Start complementDD. Operand 125 states and 6479 transitions. [2023-11-29 22:15:01,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 125 states and 6479 transitions. [2023-11-29 22:15:01,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:15:01,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 125 states and 6479 transitions. [2023-11-29 22:15:01,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 126 states, 125 states have (on average 51.832) internal successors, (6479), 125 states have internal predecessors, (6479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:15:01,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 126 states, 126 states have (on average 91.0) internal successors, (11466), 126 states have internal predecessors, (11466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:15:01,577 INFO L81 ComplementDD]: Finished complementDD. Result has 126 states, 126 states have (on average 91.0) internal successors, (11466), 126 states have internal predecessors, (11466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:15:01,577 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 2369 predicate places. [2023-11-29 22:15:01,577 INFO L500 AbstractCegarLoop]: Abstraction has has 2450 places, 6345 transitions, 402875 flow [2023-11-29 22:15:01,578 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 49.891304347826086) internal successors, (2295), 46 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:15:01,578 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:15:01,578 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:15:01,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-29 22:15:01,778 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-29 22:15:01,779 INFO L425 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:15:01,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:15:01,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1482593263, now seen corresponding path program 26 times [2023-11-29 22:15:01,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:15:01,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903043633] [2023-11-29 22:15:01,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:15:01,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:15:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:15:02,215 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:15:02,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:15:02,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903043633] [2023-11-29 22:15:02,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903043633] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:15:02,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140410557] [2023-11-29 22:15:02,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 22:15:02,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:15:02,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:15:02,216 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 22:15:02,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 22:15:02,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 22:15:02,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:15:02,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 22:15:02,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:15:02,736 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:15:02,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:15:03,163 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:15:03,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140410557] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:15:03,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:15:03,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2023-11-29 22:15:03,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504472218] [2023-11-29 22:15:03,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:15:03,164 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 22:15:03,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:15:03,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 22:15:03,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1870, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 22:15:03,166 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 22:15:03,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2450 places, 6345 transitions, 402875 flow. Second operand has 46 states, 46 states have (on average 49.891304347826086) internal successors, (2295), 46 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:15:03,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:15:03,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 22:15:03,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:15:42,955 INFO L124 PetriNetUnfolderBase]: 3461/12849 cut-off events. [2023-11-29 22:15:42,955 INFO L125 PetriNetUnfolderBase]: For 678075/684732 co-relation queries the response was YES. [2023-11-29 22:15:42,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306605 conditions, 12849 events. 3461/12849 cut-off events. For 678075/684732 co-relation queries the response was YES. Maximal size of possible extension queue 913. Compared 161197 event pairs, 13 based on Foata normal form. 106/11835 useless extension candidates. Maximal degree in co-relation 220840. Up to 8385 conditions per place. [2023-11-29 22:15:43,297 INFO L140 encePairwiseOnDemand]: 64/91 looper letters, 2646 selfloop transitions, 2722 changer transitions 1421/6827 dead transitions. [2023-11-29 22:15:43,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2676 places, 6827 transitions, 447007 flow [2023-11-29 22:15:43,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2023-11-29 22:15:43,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2023-11-29 22:15:43,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 11729 transitions. [2023-11-29 22:15:43,303 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5677978409255943 [2023-11-29 22:15:43,303 INFO L72 ComplementDD]: Start complementDD. Operand 227 states and 11729 transitions. [2023-11-29 22:15:43,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 227 states and 11729 transitions. [2023-11-29 22:15:43,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:15:43,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 227 states and 11729 transitions. [2023-11-29 22:15:43,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 228 states, 227 states have (on average 51.669603524229075) internal successors, (11729), 227 states have internal predecessors, (11729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:15:43,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 228 states, 228 states have (on average 91.0) internal successors, (20748), 228 states have internal predecessors, (20748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:15:43,326 INFO L81 ComplementDD]: Finished complementDD. Result has 228 states, 228 states have (on average 91.0) internal successors, (20748), 228 states have internal predecessors, (20748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:15:43,326 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 2595 predicate places. [2023-11-29 22:15:43,326 INFO L500 AbstractCegarLoop]: Abstraction has has 2676 places, 6827 transitions, 447007 flow [2023-11-29 22:15:43,327 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 49.891304347826086) internal successors, (2295), 46 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:15:43,327 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:15:43,327 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:15:43,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-29 22:15:43,527 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-29 22:15:43,528 INFO L425 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:15:43,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:15:43,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1690015705, now seen corresponding path program 27 times [2023-11-29 22:15:43,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:15:43,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038440214] [2023-11-29 22:15:43,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:15:43,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:15:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:15:43,826 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:15:43,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:15:43,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038440214] [2023-11-29 22:15:43,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038440214] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:15:43,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398304222] [2023-11-29 22:15:43,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 22:15:43,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:15:43,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:15:43,827 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 22:15:43,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 22:15:43,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 22:15:43,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:15:43,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 22:15:43,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:15:44,355 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:15:44,355 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:15:44,777 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:15:44,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398304222] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:15:44,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:15:44,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2023-11-29 22:15:44,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499455770] [2023-11-29 22:15:44,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:15:44,778 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 22:15:44,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:15:44,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 22:15:44,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1856, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 22:15:44,780 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 22:15:44,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2676 places, 6827 transitions, 447007 flow. Second operand has 46 states, 46 states have (on average 49.891304347826086) internal successors, (2295), 46 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:15:44,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:15:44,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 22:15:44,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:16:27,601 INFO L124 PetriNetUnfolderBase]: 3739/14177 cut-off events. [2023-11-29 22:16:27,601 INFO L125 PetriNetUnfolderBase]: For 813921/821719 co-relation queries the response was YES. [2023-11-29 22:16:27,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346931 conditions, 14177 events. 3739/14177 cut-off events. For 813921/821719 co-relation queries the response was YES. Maximal size of possible extension queue 1027. Compared 182095 event pairs, 17 based on Foata normal form. 163/13105 useless extension candidates. Maximal degree in co-relation 256433. Up to 9239 conditions per place. [2023-11-29 22:16:27,810 INFO L140 encePairwiseOnDemand]: 64/91 looper letters, 2811 selfloop transitions, 3085 changer transitions 1590/7524 dead transitions. [2023-11-29 22:16:27,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2977 places, 7524 transitions, 508164 flow [2023-11-29 22:16:27,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 302 states. [2023-11-29 22:16:27,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2023-11-29 22:16:27,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 15606 transitions. [2023-11-29 22:16:27,818 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5678626009751837 [2023-11-29 22:16:27,818 INFO L72 ComplementDD]: Start complementDD. Operand 302 states and 15606 transitions. [2023-11-29 22:16:27,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 302 states and 15606 transitions. [2023-11-29 22:16:27,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:16:27,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 302 states and 15606 transitions. [2023-11-29 22:16:27,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 303 states, 302 states have (on average 51.675496688741724) internal successors, (15606), 302 states have internal predecessors, (15606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:16:27,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 303 states, 303 states have (on average 91.0) internal successors, (27573), 303 states have internal predecessors, (27573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:16:27,841 INFO L81 ComplementDD]: Finished complementDD. Result has 303 states, 303 states have (on average 91.0) internal successors, (27573), 303 states have internal predecessors, (27573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:16:27,842 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 2896 predicate places. [2023-11-29 22:16:27,842 INFO L500 AbstractCegarLoop]: Abstraction has has 2977 places, 7524 transitions, 508164 flow [2023-11-29 22:16:27,842 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 49.891304347826086) internal successors, (2295), 46 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:16:27,842 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:16:27,842 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:16:27,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-29 22:16:28,043 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:16:28,043 INFO L425 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:16:28,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:16:28,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1437446131, now seen corresponding path program 28 times [2023-11-29 22:16:28,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:16:28,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679437571] [2023-11-29 22:16:28,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:16:28,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:16:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:16:28,326 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:16:28,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:16:28,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679437571] [2023-11-29 22:16:28,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679437571] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:16:28,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676619581] [2023-11-29 22:16:28,327 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 22:16:28,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:16:28,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:16:28,328 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 22:16:28,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 22:16:28,407 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 22:16:28,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:16:28,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 22:16:28,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:16:28,868 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:16:28,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:16:29,315 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:16:29,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676619581] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:16:29,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:16:29,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2023-11-29 22:16:29,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275500391] [2023-11-29 22:16:29,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:16:29,316 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 22:16:29,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:16:29,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 22:16:29,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=1861, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 22:16:29,318 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 22:16:29,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2977 places, 7524 transitions, 508164 flow. Second operand has 46 states, 46 states have (on average 49.91304347826087) internal successors, (2296), 46 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:16:29,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:16:29,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 22:16:29,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:17:16,392 INFO L124 PetriNetUnfolderBase]: 4008/15080 cut-off events. [2023-11-29 22:17:16,392 INFO L125 PetriNetUnfolderBase]: For 912651/921132 co-relation queries the response was YES. [2023-11-29 22:17:16,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380444 conditions, 15080 events. 4008/15080 cut-off events. For 912651/921132 co-relation queries the response was YES. Maximal size of possible extension queue 1082. Compared 194782 event pairs, 16 based on Foata normal form. 231/14014 useless extension candidates. Maximal degree in co-relation 279580. Up to 9872 conditions per place. [2023-11-29 22:17:16,648 INFO L140 encePairwiseOnDemand]: 63/91 looper letters, 2994 selfloop transitions, 3318 changer transitions 1667/8017 dead transitions. [2023-11-29 22:17:16,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3242 places, 8017 transitions, 557643 flow [2023-11-29 22:17:16,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 266 states. [2023-11-29 22:17:16,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2023-11-29 22:17:16,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 13836 transitions. [2023-11-29 22:17:16,658 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5715938197141205 [2023-11-29 22:17:16,659 INFO L72 ComplementDD]: Start complementDD. Operand 266 states and 13836 transitions. [2023-11-29 22:17:16,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 266 states and 13836 transitions. [2023-11-29 22:17:16,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:17:16,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 266 states and 13836 transitions. [2023-11-29 22:17:16,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 267 states, 266 states have (on average 52.015037593984964) internal successors, (13836), 266 states have internal predecessors, (13836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:17:16,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 267 states, 267 states have (on average 91.0) internal successors, (24297), 267 states have internal predecessors, (24297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:17:16,694 INFO L81 ComplementDD]: Finished complementDD. Result has 267 states, 267 states have (on average 91.0) internal successors, (24297), 267 states have internal predecessors, (24297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:17:16,695 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 3161 predicate places. [2023-11-29 22:17:16,695 INFO L500 AbstractCegarLoop]: Abstraction has has 3242 places, 8017 transitions, 557643 flow [2023-11-29 22:17:16,696 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 49.91304347826087) internal successors, (2296), 46 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:17:16,696 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:17:16,696 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:17:16,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-29 22:17:16,901 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:17:16,901 INFO L425 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:17:16,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:17:16,902 INFO L85 PathProgramCache]: Analyzing trace with hash 67654549, now seen corresponding path program 1 times [2023-11-29 22:17:16,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:17:16,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319015379] [2023-11-29 22:17:16,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:17:16,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:17:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:17:17,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:17:17,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:17:17,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319015379] [2023-11-29 22:17:17,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319015379] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:17:17,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986885664] [2023-11-29 22:17:17,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:17:17,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:17:17,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:17:17,348 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 22:17:17,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 22:17:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:17:17,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 22:17:17,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:17:17,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:17:17,776 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:17:18,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:17:18,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986885664] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:17:18,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:17:18,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 41 [2023-11-29 22:17:18,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398443048] [2023-11-29 22:17:18,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:17:18,179 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-29 22:17:18,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:17:18,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-29 22:17:18,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=1362, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 22:17:18,181 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 91 [2023-11-29 22:17:18,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3242 places, 8017 transitions, 557643 flow. Second operand has 41 states, 41 states have (on average 49.048780487804876) internal successors, (2011), 41 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:17:18,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:17:18,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 91 [2023-11-29 22:17:18,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:18:08,838 INFO L124 PetriNetUnfolderBase]: 4574/16166 cut-off events. [2023-11-29 22:18:08,839 INFO L125 PetriNetUnfolderBase]: For 1175341/1183839 co-relation queries the response was YES. [2023-11-29 22:18:08,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 418727 conditions, 16166 events. 4574/16166 cut-off events. For 1175341/1183839 co-relation queries the response was YES. Maximal size of possible extension queue 1132. Compared 206139 event pairs, 53 based on Foata normal form. 208/14999 useless extension candidates. Maximal degree in co-relation 311496. Up to 10563 conditions per place. [2023-11-29 22:18:09,115 INFO L140 encePairwiseOnDemand]: 69/91 looper letters, 4554 selfloop transitions, 1884 changer transitions 1781/8256 dead transitions. [2023-11-29 22:18:09,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3296 places, 8256 transitions, 590021 flow [2023-11-29 22:18:09,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-11-29 22:18:09,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2023-11-29 22:18:09,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 2867 transitions. [2023-11-29 22:18:09,118 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5728271728271729 [2023-11-29 22:18:09,118 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 2867 transitions. [2023-11-29 22:18:09,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 2867 transitions. [2023-11-29 22:18:09,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:18:09,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 2867 transitions. [2023-11-29 22:18:09,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 52.127272727272725) internal successors, (2867), 55 states have internal predecessors, (2867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:18:09,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 91.0) internal successors, (5096), 56 states have internal predecessors, (5096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:18:09,125 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 91.0) internal successors, (5096), 56 states have internal predecessors, (5096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:18:09,125 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 3215 predicate places. [2023-11-29 22:18:09,125 INFO L500 AbstractCegarLoop]: Abstraction has has 3296 places, 8256 transitions, 590021 flow [2023-11-29 22:18:09,125 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 49.048780487804876) internal successors, (2011), 41 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:18:09,125 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:18:09,125 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:18:09,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-29 22:18:09,330 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:18:09,331 INFO L425 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:18:09,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:18:09,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1216450833, now seen corresponding path program 29 times [2023-11-29 22:18:09,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:18:09,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979400419] [2023-11-29 22:18:09,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:18:09,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:18:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:18:09,616 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:18:09,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:18:09,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979400419] [2023-11-29 22:18:09,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979400419] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:18:09,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677838005] [2023-11-29 22:18:09,616 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 22:18:09,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:18:09,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:18:09,620 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 22:18:09,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-29 22:18:09,711 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-29 22:18:09,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:18:09,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 22:18:09,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:18:10,200 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:18:10,200 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:18:10,598 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:18:10,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677838005] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:18:10,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:18:10,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2023-11-29 22:18:10,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260080468] [2023-11-29 22:18:10,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:18:10,599 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 22:18:10,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:18:10,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 22:18:10,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1849, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 22:18:10,601 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 22:18:10,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3296 places, 8256 transitions, 590021 flow. Second operand has 46 states, 46 states have (on average 49.891304347826086) internal successors, (2295), 46 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:18:10,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:18:10,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 22:18:10,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:19:03,592 INFO L124 PetriNetUnfolderBase]: 5014/17321 cut-off events. [2023-11-29 22:19:03,593 INFO L125 PetriNetUnfolderBase]: For 1314225/1323189 co-relation queries the response was YES. [2023-11-29 22:19:03,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463708 conditions, 17321 events. 5014/17321 cut-off events. For 1314225/1323189 co-relation queries the response was YES. Maximal size of possible extension queue 1209. Compared 221507 event pairs, 59 based on Foata normal form. 153/15956 useless extension candidates. Maximal degree in co-relation 338407. Up to 11402 conditions per place. [2023-11-29 22:19:03,904 INFO L140 encePairwiseOnDemand]: 64/91 looper letters, 4048 selfloop transitions, 2920 changer transitions 1838/8853 dead transitions. [2023-11-29 22:19:03,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3448 places, 8853 transitions, 650319 flow [2023-11-29 22:19:03,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2023-11-29 22:19:03,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2023-11-29 22:19:03,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 7911 transitions. [2023-11-29 22:19:03,908 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5681965093729799 [2023-11-29 22:19:03,908 INFO L72 ComplementDD]: Start complementDD. Operand 153 states and 7911 transitions. [2023-11-29 22:19:03,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 153 states and 7911 transitions. [2023-11-29 22:19:03,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:19:03,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 153 states and 7911 transitions. [2023-11-29 22:19:03,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 154 states, 153 states have (on average 51.705882352941174) internal successors, (7911), 153 states have internal predecessors, (7911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:19:03,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 154 states, 154 states have (on average 91.0) internal successors, (14014), 154 states have internal predecessors, (14014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:19:03,921 INFO L81 ComplementDD]: Finished complementDD. Result has 154 states, 154 states have (on average 91.0) internal successors, (14014), 154 states have internal predecessors, (14014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:19:03,921 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 3367 predicate places. [2023-11-29 22:19:03,921 INFO L500 AbstractCegarLoop]: Abstraction has has 3448 places, 8853 transitions, 650319 flow [2023-11-29 22:19:03,921 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 49.891304347826086) internal successors, (2295), 46 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:19:03,921 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:19:03,921 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:19:03,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-11-29 22:19:04,122 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-29 22:19:04,122 INFO L425 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:19:04,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:19:04,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1667955867, now seen corresponding path program 30 times [2023-11-29 22:19:04,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:19:04,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858673470] [2023-11-29 22:19:04,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:19:04,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:19:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:19:04,355 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:19:04,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:19:04,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858673470] [2023-11-29 22:19:04,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858673470] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:19:04,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837037043] [2023-11-29 22:19:04,355 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 22:19:04,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:19:04,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:19:04,358 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 22:19:04,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-29 22:19:04,459 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-29 22:19:04,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:19:04,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 22:19:04,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:19:04,896 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:19:04,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:19:05,319 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:19:05,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837037043] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:19:05,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:19:05,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2023-11-29 22:19:05,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415336233] [2023-11-29 22:19:05,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:19:05,321 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 22:19:05,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:19:05,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 22:19:05,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1852, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 22:19:05,323 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 22:19:05,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3448 places, 8853 transitions, 650319 flow. Second operand has 46 states, 46 states have (on average 49.891304347826086) internal successors, (2295), 46 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:19:05,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:19:05,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 22:19:05,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:20:06,128 INFO L124 PetriNetUnfolderBase]: 5039/17451 cut-off events. [2023-11-29 22:20:06,128 INFO L125 PetriNetUnfolderBase]: For 1393084/1402559 co-relation queries the response was YES. [2023-11-29 22:20:06,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479219 conditions, 17451 events. 5039/17451 cut-off events. For 1393084/1402559 co-relation queries the response was YES. Maximal size of possible extension queue 1215. Compared 223558 event pairs, 64 based on Foata normal form. 146/16072 useless extension candidates. Maximal degree in co-relation 420788. Up to 11476 conditions per place. [2023-11-29 22:20:06,443 INFO L140 encePairwiseOnDemand]: 63/91 looper letters, 3876 selfloop transitions, 3134 changer transitions 1860/8917 dead transitions. [2023-11-29 22:20:06,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3611 places, 8917 transitions, 672779 flow [2023-11-29 22:20:06,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2023-11-29 22:20:06,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2023-11-29 22:20:06,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 8485 transitions. [2023-11-29 22:20:06,447 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5685473063521844 [2023-11-29 22:20:06,447 INFO L72 ComplementDD]: Start complementDD. Operand 164 states and 8485 transitions. [2023-11-29 22:20:06,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 164 states and 8485 transitions. [2023-11-29 22:20:06,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:20:06,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 164 states and 8485 transitions. [2023-11-29 22:20:06,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 165 states, 164 states have (on average 51.73780487804878) internal successors, (8485), 164 states have internal predecessors, (8485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:20:06,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 165 states, 165 states have (on average 91.0) internal successors, (15015), 165 states have internal predecessors, (15015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:20:06,460 INFO L81 ComplementDD]: Finished complementDD. Result has 165 states, 165 states have (on average 91.0) internal successors, (15015), 165 states have internal predecessors, (15015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:20:06,460 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 3530 predicate places. [2023-11-29 22:20:06,460 INFO L500 AbstractCegarLoop]: Abstraction has has 3611 places, 8917 transitions, 672779 flow [2023-11-29 22:20:06,461 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 49.891304347826086) internal successors, (2295), 46 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:20:06,461 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:20:06,461 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:20:06,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-11-29 22:20:06,661 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-29 22:20:06,661 INFO L425 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:20:06,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:20:06,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1228298069, now seen corresponding path program 31 times [2023-11-29 22:20:06,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:20:06,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564631654] [2023-11-29 22:20:06,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:20:06,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:20:06,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:20:06,957 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:20:06,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:20:06,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564631654] [2023-11-29 22:20:06,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564631654] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:20:06,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366838586] [2023-11-29 22:20:06,958 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 22:20:06,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:20:06,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:20:06,961 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 22:20:06,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-29 22:20:07,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:20:07,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 22:20:07,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:20:07,508 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:20:07,508 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:20:07,930 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:20:07,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366838586] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:20:07,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:20:07,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2023-11-29 22:20:07,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241287104] [2023-11-29 22:20:07,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:20:07,931 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 22:20:07,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:20:07,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 22:20:07,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1858, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 22:20:07,933 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 22:20:08,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3611 places, 8917 transitions, 672779 flow. Second operand has 46 states, 46 states have (on average 49.891304347826086) internal successors, (2295), 46 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:20:08,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:20:08,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 22:20:08,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:21:11,970 INFO L124 PetriNetUnfolderBase]: 5456/18661 cut-off events. [2023-11-29 22:21:11,970 INFO L125 PetriNetUnfolderBase]: For 1561858/1572006 co-relation queries the response was YES. [2023-11-29 22:21:11,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 527281 conditions, 18661 events. 5456/18661 cut-off events. For 1561858/1572006 co-relation queries the response was YES. Maximal size of possible extension queue 1271. Compared 240007 event pairs, 74 based on Foata normal form. 172/17189 useless extension candidates. Maximal degree in co-relation 407390. Up to 12327 conditions per place. [2023-11-29 22:21:12,323 INFO L140 encePairwiseOnDemand]: 63/91 looper letters, 3984 selfloop transitions, 3580 changer transitions 1919/9530 dead transitions. [2023-11-29 22:21:12,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3816 places, 9530 transitions, 738128 flow [2023-11-29 22:21:12,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2023-11-29 22:21:12,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2023-11-29 22:21:12,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 10687 transitions. [2023-11-29 22:21:12,331 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5700949535900992 [2023-11-29 22:21:12,331 INFO L72 ComplementDD]: Start complementDD. Operand 206 states and 10687 transitions. [2023-11-29 22:21:12,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 206 states and 10687 transitions. [2023-11-29 22:21:12,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:21:12,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 206 states and 10687 transitions. [2023-11-29 22:21:12,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 207 states, 206 states have (on average 51.87864077669903) internal successors, (10687), 206 states have internal predecessors, (10687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:21:12,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 207 states, 207 states have (on average 91.0) internal successors, (18837), 207 states have internal predecessors, (18837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:21:12,496 INFO L81 ComplementDD]: Finished complementDD. Result has 207 states, 207 states have (on average 91.0) internal successors, (18837), 207 states have internal predecessors, (18837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:21:12,497 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 3735 predicate places. [2023-11-29 22:21:12,497 INFO L500 AbstractCegarLoop]: Abstraction has has 3816 places, 9530 transitions, 738128 flow [2023-11-29 22:21:12,497 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 49.891304347826086) internal successors, (2295), 46 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:21:12,497 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:21:12,497 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:21:12,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-29 22:21:12,702 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 22:21:12,702 INFO L425 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:21:12,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:21:12,703 INFO L85 PathProgramCache]: Analyzing trace with hash 672729429, now seen corresponding path program 32 times [2023-11-29 22:21:12,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:21:12,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537323860] [2023-11-29 22:21:12,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:21:12,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:21:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:21:13,022 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:21:13,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:21:13,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537323860] [2023-11-29 22:21:13,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537323860] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:21:13,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400054689] [2023-11-29 22:21:13,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 22:21:13,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:21:13,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:21:13,024 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 22:21:13,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-29 22:21:13,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 22:21:13,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:21:13,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 22:21:13,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:21:13,631 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:21:13,632 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:21:14,077 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:21:14,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400054689] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:21:14,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:21:14,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2023-11-29 22:21:14,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784440253] [2023-11-29 22:21:14,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:21:14,078 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 22:21:14,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:21:14,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 22:21:14,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1867, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 22:21:14,081 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 22:21:14,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3816 places, 9530 transitions, 738128 flow. Second operand has 46 states, 46 states have (on average 49.891304347826086) internal successors, (2295), 46 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:21:14,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:21:14,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 22:21:14,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:22:39,148 INFO L124 PetriNetUnfolderBase]: 5801/19832 cut-off events. [2023-11-29 22:22:39,148 INFO L125 PetriNetUnfolderBase]: For 1734760/1745611 co-relation queries the response was YES. [2023-11-29 22:22:39,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 575101 conditions, 19832 events. 5801/19832 cut-off events. For 1734760/1745611 co-relation queries the response was YES. Maximal size of possible extension queue 1351. Compared 257626 event pairs, 74 based on Foata normal form. 280/18380 useless extension candidates. Maximal degree in co-relation 507165. Up to 13131 conditions per place. [2023-11-29 22:22:39,545 INFO L140 encePairwiseOnDemand]: 63/91 looper letters, 3725 selfloop transitions, 4410 changer transitions 2003/10185 dead transitions. [2023-11-29 22:22:39,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 4156 places, 10185 transitions, 809373 flow [2023-11-29 22:22:39,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 341 states. [2023-11-29 22:22:39,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2023-11-29 22:22:39,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 17604 transitions. [2023-11-29 22:22:39,556 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5673036640778576 [2023-11-29 22:22:39,556 INFO L72 ComplementDD]: Start complementDD. Operand 341 states and 17604 transitions. [2023-11-29 22:22:39,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 341 states and 17604 transitions. [2023-11-29 22:22:39,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:22:39,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 341 states and 17604 transitions. [2023-11-29 22:22:39,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 342 states, 341 states have (on average 51.624633431085044) internal successors, (17604), 341 states have internal predecessors, (17604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:22:39,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 342 states, 342 states have (on average 91.0) internal successors, (31122), 342 states have internal predecessors, (31122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:22:39,594 INFO L81 ComplementDD]: Finished complementDD. Result has 342 states, 342 states have (on average 91.0) internal successors, (31122), 342 states have internal predecessors, (31122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:22:39,594 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 4075 predicate places. [2023-11-29 22:22:39,594 INFO L500 AbstractCegarLoop]: Abstraction has has 4156 places, 10185 transitions, 809373 flow [2023-11-29 22:22:39,595 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 49.891304347826086) internal successors, (2295), 46 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:22:39,595 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:22:39,595 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:22:39,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-11-29 22:22:39,796 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-29 22:22:39,797 INFO L425 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:22:39,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:22:39,797 INFO L85 PathProgramCache]: Analyzing trace with hash 2125771699, now seen corresponding path program 33 times [2023-11-29 22:22:39,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:22:39,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668172037] [2023-11-29 22:22:39,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:22:39,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:22:39,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:22:40,118 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:22:40,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:22:40,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668172037] [2023-11-29 22:22:40,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668172037] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:22:40,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504130081] [2023-11-29 22:22:40,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 22:22:40,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:22:40,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:22:40,120 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 22:22:40,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-29 22:22:40,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 22:22:40,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:22:40,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 22:22:40,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:22:40,725 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:22:40,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:22:41,149 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:22:41,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504130081] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:22:41,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:22:41,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2023-11-29 22:22:41,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680993] [2023-11-29 22:22:41,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:22:41,150 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 22:22:41,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:22:41,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 22:22:41,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1872, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 22:22:41,151 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 22:22:41,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 4156 places, 10185 transitions, 809373 flow. Second operand has 46 states, 46 states have (on average 49.891304347826086) internal successors, (2295), 46 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:22:41,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:22:41,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 22:22:41,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:24:10,033 INFO L124 PetriNetUnfolderBase]: 5883/20143 cut-off events. [2023-11-29 22:24:10,033 INFO L125 PetriNetUnfolderBase]: For 1857191/1868279 co-relation queries the response was YES. [2023-11-29 22:24:10,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 598651 conditions, 20143 events. 5883/20143 cut-off events. For 1857191/1868279 co-relation queries the response was YES. Maximal size of possible extension queue 1376. Compared 262580 event pairs, 73 based on Foata normal form. 217/18603 useless extension candidates. Maximal degree in co-relation 527797. Up to 13343 conditions per place. [2023-11-29 22:24:10,610 INFO L140 encePairwiseOnDemand]: 63/91 looper letters, 3934 selfloop transitions, 4308 changer transitions 2068/10357 dead transitions. [2023-11-29 22:24:10,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 4435 places, 10357 transitions, 843740 flow [2023-11-29 22:24:10,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 280 states. [2023-11-29 22:24:10,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2023-11-29 22:24:10,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 14456 transitions. [2023-11-29 22:24:10,620 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5673469387755102 [2023-11-29 22:24:10,620 INFO L72 ComplementDD]: Start complementDD. Operand 280 states and 14456 transitions. [2023-11-29 22:24:10,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 280 states and 14456 transitions. [2023-11-29 22:24:10,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:24:10,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 280 states and 14456 transitions. [2023-11-29 22:24:10,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 281 states, 280 states have (on average 51.628571428571426) internal successors, (14456), 280 states have internal predecessors, (14456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:24:10,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 281 states, 281 states have (on average 91.0) internal successors, (25571), 281 states have internal predecessors, (25571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:24:10,656 INFO L81 ComplementDD]: Finished complementDD. Result has 281 states, 281 states have (on average 91.0) internal successors, (25571), 281 states have internal predecessors, (25571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:24:10,656 INFO L307 CegarLoopForPetriNet]: 81 programPoint places, 4354 predicate places. [2023-11-29 22:24:10,656 INFO L500 AbstractCegarLoop]: Abstraction has has 4435 places, 10357 transitions, 843740 flow [2023-11-29 22:24:10,657 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 49.891304347826086) internal successors, (2295), 46 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:24:10,657 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:24:10,657 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:24:10,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-29 22:24:10,857 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-29 22:24:10,857 INFO L425 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:24:10,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:24:10,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1890947473, now seen corresponding path program 34 times [2023-11-29 22:24:10,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:24:10,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347780331] [2023-11-29 22:24:10,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:24:10,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:24:10,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:24:11,161 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:24:11,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:24:11,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347780331] [2023-11-29 22:24:11,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347780331] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:24:11,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365346844] [2023-11-29 22:24:11,162 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 22:24:11,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:24:11,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:24:11,163 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 22:24:11,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-29 22:24:11,243 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 22:24:11,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:24:11,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 22:24:11,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:24:11,705 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:24:11,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:24:12,158 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:24:12,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365346844] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:24:12,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:24:12,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2023-11-29 22:24:12,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848573567] [2023-11-29 22:24:12,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:24:12,159 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 22:24:12,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:24:12,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 22:24:12,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1865, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 22:24:12,162 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 22:24:12,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 4435 places, 10357 transitions, 843740 flow. Second operand has 46 states, 46 states have (on average 49.91304347826087) internal successors, (2296), 46 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:24:12,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:24:12,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 22:24:12,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-11-29 22:24:35,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2023-11-29 22:24:35,537 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-29 22:24:35,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-11-29 22:24:35,557 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-29 22:24:35,557 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 [2023-11-29 22:24:35,738 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:24:35,738 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (46states, 48/91 universal loopers) in iteration 41,while PetriNetUnfolder was constructing finite prefix that currently has 134848 conditions, 4037 events (1187/4036 cut-off events. For 279898/283494 co-relation queries the response was YES. Maximal size of possible extension queue 960. Compared 49986 event pairs, 24 based on Foata normal form. 94/4618 useless extension candidates. Maximal degree in co-relation 131742. Up to 2805 conditions per place.). [2023-11-29 22:24:35,739 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-29 22:24:35,739 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-29 22:24:35,740 INFO L457 BasicCegarLoop]: Path program histogram: [34, 6, 1] [2023-11-29 22:24:35,742 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 22:24:35,742 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 22:24:35,745 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:24:35 BasicIcfg [2023-11-29 22:24:35,745 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 22:24:35,746 INFO L158 Benchmark]: Toolchain (without parser) took 804925.87ms. Allocated memory was 339.7MB in the beginning and 5.3GB in the end (delta: 5.0GB). Free memory was 281.3MB in the beginning and 1.2GB in the end (delta: -885.5MB). Peak memory consumption was 4.1GB. Max. memory is 16.0GB. [2023-11-29 22:24:35,746 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 339.7MB. Free memory was 290.4MB in the beginning and 290.2MB in the end (delta: 140.0kB). There was no memory consumed. Max. memory is 16.0GB. [2023-11-29 22:24:35,746 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.76ms. Allocated memory is still 339.7MB. Free memory was 281.0MB in the beginning and 269.8MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-11-29 22:24:35,746 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.53ms. Allocated memory is still 339.7MB. Free memory was 269.8MB in the beginning and 268.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 22:24:35,746 INFO L158 Benchmark]: Boogie Preprocessor took 19.91ms. Allocated memory is still 339.7MB. Free memory was 268.0MB in the beginning and 267.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2023-11-29 22:24:35,747 INFO L158 Benchmark]: RCFGBuilder took 353.21ms. Allocated memory was 339.7MB in the beginning and 570.4MB in the end (delta: 230.7MB). Free memory was 266.7MB in the beginning and 533.2MB in the end (delta: -266.5MB). Peak memory consumption was 17.6MB. Max. memory is 16.0GB. [2023-11-29 22:24:35,747 INFO L158 Benchmark]: TraceAbstraction took 804335.85ms. Allocated memory was 570.4MB in the beginning and 5.3GB in the end (delta: 4.8GB). Free memory was 532.5MB in the beginning and 1.2GB in the end (delta: -634.3MB). Peak memory consumption was 4.1GB. Max. memory is 16.0GB. [2023-11-29 22:24:35,748 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 339.7MB. Free memory was 290.4MB in the beginning and 290.2MB in the end (delta: 140.0kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 185.76ms. Allocated memory is still 339.7MB. Free memory was 281.0MB in the beginning and 269.8MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 26.53ms. Allocated memory is still 339.7MB. Free memory was 269.8MB in the beginning and 268.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 19.91ms. Allocated memory is still 339.7MB. Free memory was 268.0MB in the beginning and 267.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 353.21ms. Allocated memory was 339.7MB in the beginning and 570.4MB in the end (delta: 230.7MB). Free memory was 266.7MB in the beginning and 533.2MB in the end (delta: -266.5MB). Peak memory consumption was 17.6MB. Max. memory is 16.0GB. * TraceAbstraction took 804335.85ms. Allocated memory was 570.4MB in the beginning and 5.3GB in the end (delta: 4.8GB). Free memory was 532.5MB in the beginning and 1.2GB in the end (delta: -634.3MB). Peak memory consumption was 4.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (46states, 48/91 universal loopers) in iteration 41,while PetriNetUnfolder was constructing finite prefix that currently has 134848 conditions, 4037 events (1187/4036 cut-off events. For 279898/283494 co-relation queries the response was YES. Maximal size of possible extension queue 960. Compared 49986 event pairs, 24 based on Foata normal form. 94/4618 useless extension candidates. Maximal degree in co-relation 131742. Up to 2805 conditions per place.). - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (46states, 48/91 universal loopers) in iteration 41,while PetriNetUnfolder was constructing finite prefix that currently has 134848 conditions, 4037 events (1187/4036 cut-off events. For 279898/283494 co-relation queries the response was YES. Maximal size of possible extension queue 960. Compared 49986 event pairs, 24 based on Foata normal form. 94/4618 useless extension candidates. Maximal degree in co-relation 131742. Up to 2805 conditions per place.). - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (46states, 48/91 universal loopers) in iteration 41,while PetriNetUnfolder was constructing finite prefix that currently has 134848 conditions, 4037 events (1187/4036 cut-off events. For 279898/283494 co-relation queries the response was YES. Maximal size of possible extension queue 960. Compared 49986 event pairs, 24 based on Foata normal form. 94/4618 useless extension candidates. Maximal degree in co-relation 131742. Up to 2805 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 110 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: 804.2s, OverallIterations: 41, TraceHistogramMax: 2, PathProgramHistogramMax: 34, EmptinessCheckTime: 0.0s, AutomataDifference: 751.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21992 SdHoareTripleChecker+Valid, 33.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21992 mSDsluCounter, 35189 SdHoareTripleChecker+Invalid, 28.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32581 mSDsCounter, 4937 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 80025 IncrementalHoareTripleChecker+Invalid, 84962 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4937 mSolverCounterUnsat, 2608 mSDtfsCounter, 80025 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9518 GetRequests, 4188 SyntacticMatches, 1 SemanticMatches, 5329 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393267 ImplicationChecksByTransitivity, 118.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=843740occurred in iteration=40, InterpolantAutomatonStates: 4395, 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: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 41.5s InterpolantComputationTime, 5374 NumberOfCodeBlocks, 5338 NumberOfCodeBlocksAsserted, 105 NumberOfCheckSat, 7758 ConstructedInterpolants, 0 QuantifiedInterpolants, 61854 SizeOfPredicates, 450 NumberOfNonLiveVariables, 5819 ConjunctsInSsa, 860 ConjunctsInUnsatCore, 111 InterpolantComputations, 6 PerfectInterpolantSequences, 0/378 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