/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/chl-array-int-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-29 20:27:19,102 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 20:27:19,180 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 20:27:19,218 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 20:27:19,219 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 20:27:19,219 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 20:27:19,220 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 20:27:19,220 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 20:27:19,221 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 20:27:19,221 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 20:27:19,221 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 20:27:19,222 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 20:27:19,222 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 20:27:19,222 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 20:27:19,223 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 20:27:19,223 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 20:27:19,223 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 20:27:19,224 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 20:27:19,228 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 20:27:19,228 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 20:27:19,231 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 20:27:19,232 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 20:27:19,233 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 20:27:19,233 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-29 20:27:19,233 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 20:27:19,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 20:27:19,235 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 20:27:19,235 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 20:27:19,235 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 20:27:19,235 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 20:27:19,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 20:27:19,236 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 20:27:19,236 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 20:27:19,236 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-11-29 20:27:19,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 20:27:19,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 20:27:19,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 20:27:19,471 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 20:27:19,471 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 20:27:19,472 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-array-int-symm.wvr.c [2023-11-29 20:27:20,548 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 20:27:20,693 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 20:27:20,693 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-symm.wvr.c [2023-11-29 20:27:20,699 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9a92ae78/c33844dfc4c04805964d0bc12586d371/FLAGdb29c133b [2023-11-29 20:27:20,712 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9a92ae78/c33844dfc4c04805964d0bc12586d371 [2023-11-29 20:27:20,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 20:27:20,716 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-29 20:27:20,717 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 20:27:20,717 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 20:27:20,720 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 20:27:20,721 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:27:20" (1/1) ... [2023-11-29 20:27:20,722 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb5cac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:20, skipping insertion in model container [2023-11-29 20:27:20,722 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:27:20" (1/1) ... [2023-11-29 20:27:20,741 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 20:27:20,879 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-symm.wvr.c[2508,2521] [2023-11-29 20:27:20,889 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 20:27:20,897 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 20:27:20,915 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-symm.wvr.c[2508,2521] [2023-11-29 20:27:20,918 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 20:27:20,930 INFO L206 MainTranslator]: Completed translation [2023-11-29 20:27:20,930 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:20 WrapperNode [2023-11-29 20:27:20,931 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 20:27:20,931 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 20:27:20,932 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 20:27:20,932 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 20:27:20,937 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:20" (1/1) ... [2023-11-29 20:27:20,943 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:20" (1/1) ... [2023-11-29 20:27:20,966 INFO L138 Inliner]: procedures = 25, calls = 39, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 205 [2023-11-29 20:27:20,966 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 20:27:20,967 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 20:27:20,967 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 20:27:20,967 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 20:27:20,974 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:20" (1/1) ... [2023-11-29 20:27:20,975 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:20" (1/1) ... [2023-11-29 20:27:20,978 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:20" (1/1) ... [2023-11-29 20:27:20,982 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:20" (1/1) ... [2023-11-29 20:27:20,989 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:20" (1/1) ... [2023-11-29 20:27:20,993 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:20" (1/1) ... [2023-11-29 20:27:20,994 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:20" (1/1) ... [2023-11-29 20:27:20,996 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:20" (1/1) ... [2023-11-29 20:27:20,998 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 20:27:20,999 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 20:27:20,999 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 20:27:20,999 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 20:27:21,000 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:20" (1/1) ... [2023-11-29 20:27:21,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 20:27:21,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 20:27:21,026 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 20:27:21,065 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 20:27:21,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 20:27:21,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 20:27:21,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 20:27:21,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 20:27:21,081 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 20:27:21,081 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 20:27:21,081 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 20:27:21,082 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 20:27:21,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 20:27:21,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 20:27:21,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 20:27:21,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 20:27:21,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 20:27:21,083 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 20:27:21,209 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 20:27:21,211 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 20:27:21,483 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 20:27:21,496 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 20:27:21,497 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-29 20:27:21,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:27:21 BoogieIcfgContainer [2023-11-29 20:27:21,498 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 20:27:21,500 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 20:27:21,500 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 20:27:21,502 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 20:27:21,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:27:20" (1/3) ... [2023-11-29 20:27:21,503 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ed2ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:27:21, skipping insertion in model container [2023-11-29 20:27:21,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:20" (2/3) ... [2023-11-29 20:27:21,503 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ed2ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:27:21, skipping insertion in model container [2023-11-29 20:27:21,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:27:21" (3/3) ... [2023-11-29 20:27:21,504 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-symm.wvr.c [2023-11-29 20:27:21,518 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 20:27:21,519 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 20:27:21,519 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 20:27:21,599 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 20:27:21,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 262 transitions, 538 flow [2023-11-29 20:27:21,723 INFO L124 PetriNetUnfolderBase]: 21/260 cut-off events. [2023-11-29 20:27:21,723 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 20:27:21,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 260 events. 21/260 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 352 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 168. Up to 3 conditions per place. [2023-11-29 20:27:21,740 INFO L82 GeneralOperation]: Start removeDead. Operand has 248 places, 262 transitions, 538 flow [2023-11-29 20:27:21,746 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 237 places, 251 transitions, 514 flow [2023-11-29 20:27:21,766 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 20:27:21,771 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;@1089608, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 20:27:21,791 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-29 20:27:21,853 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 20:27:21,854 INFO L124 PetriNetUnfolderBase]: 21/250 cut-off events. [2023-11-29 20:27:21,854 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 20:27:21,854 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 20:27:21,854 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:21,855 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 20:27:21,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 20:27:21,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1016432532, now seen corresponding path program 1 times [2023-11-29 20:27:21,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 20:27:21,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325317094] [2023-11-29 20:27:21,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:27:21,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 20:27:22,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:27:23,248 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 20:27:23,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 20:27:23,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325317094] [2023-11-29 20:27:23,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325317094] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 20:27:23,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 20:27:23,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-11-29 20:27:23,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889720494] [2023-11-29 20:27:23,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 20:27:23,261 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 20:27:23,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 20:27:23,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 20:27:23,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2023-11-29 20:27:23,305 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 262 [2023-11-29 20:27:23,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 251 transitions, 514 flow. Second operand has 20 states, 20 states have (on average 156.7) internal successors, (3134), 20 states have internal predecessors, (3134), 0 states have call successors, (0), 0 states 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 20:27:23,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 20:27:23,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 262 [2023-11-29 20:27:23,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 20:27:24,497 INFO L124 PetriNetUnfolderBase]: 144/1849 cut-off events. [2023-11-29 20:27:24,498 INFO L125 PetriNetUnfolderBase]: For 102/104 co-relation queries the response was YES. [2023-11-29 20:27:24,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2337 conditions, 1849 events. 144/1849 cut-off events. For 102/104 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 13964 event pairs, 57 based on Foata normal form. 91/1752 useless extension candidates. Maximal degree in co-relation 609. Up to 109 conditions per place. [2023-11-29 20:27:24,510 INFO L140 encePairwiseOnDemand]: 208/262 looper letters, 185 selfloop transitions, 34 changer transitions 37/399 dead transitions. [2023-11-29 20:27:24,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 399 transitions, 1361 flow [2023-11-29 20:27:24,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 20:27:24,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-11-29 20:27:24,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5665 transitions. [2023-11-29 20:27:24,531 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6177753544165758 [2023-11-29 20:27:24,532 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5665 transitions. [2023-11-29 20:27:24,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5665 transitions. [2023-11-29 20:27:24,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 20:27:24,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5665 transitions. [2023-11-29 20:27:24,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 161.85714285714286) internal successors, (5665), 35 states have internal predecessors, (5665), 0 states have call successors, (0), 0 states 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 20:27:24,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 262.0) internal successors, (9432), 36 states have internal predecessors, (9432), 0 states have call successors, (0), 0 states 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 20:27:24,570 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 262.0) internal successors, (9432), 36 states have internal predecessors, (9432), 0 states have call successors, (0), 0 states 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 20:27:24,573 INFO L307 CegarLoopForPetriNet]: 237 programPoint places, 34 predicate places. [2023-11-29 20:27:24,573 INFO L500 AbstractCegarLoop]: Abstraction has has 271 places, 399 transitions, 1361 flow [2023-11-29 20:27:24,574 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 156.7) internal successors, (3134), 20 states have internal predecessors, (3134), 0 states have call successors, (0), 0 states 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 20:27:24,574 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 20:27:24,574 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:24,575 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 20:27:24,575 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 20:27:24,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 20:27:24,575 INFO L85 PathProgramCache]: Analyzing trace with hash 238761260, now seen corresponding path program 2 times [2023-11-29 20:27:24,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 20:27:24,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017051013] [2023-11-29 20:27:24,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:27:24,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 20:27:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:27:25,312 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 20:27:25,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 20:27:25,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017051013] [2023-11-29 20:27:25,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017051013] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 20:27:25,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 20:27:25,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-11-29 20:27:25,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953359295] [2023-11-29 20:27:25,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 20:27:25,314 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 20:27:25,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 20:27:25,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 20:27:25,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2023-11-29 20:27:25,319 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 262 [2023-11-29 20:27:25,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 399 transitions, 1361 flow. Second operand has 20 states, 20 states have (on average 156.7) internal successors, (3134), 20 states have internal predecessors, (3134), 0 states have call successors, (0), 0 states 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 20:27:25,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 20:27:25,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 262 [2023-11-29 20:27:25,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 20:27:26,490 INFO L124 PetriNetUnfolderBase]: 140/1903 cut-off events. [2023-11-29 20:27:26,491 INFO L125 PetriNetUnfolderBase]: For 299/417 co-relation queries the response was YES. [2023-11-29 20:27:26,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2896 conditions, 1903 events. 140/1903 cut-off events. For 299/417 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 14225 event pairs, 55 based on Foata normal form. 4/1715 useless extension candidates. Maximal degree in co-relation 682. Up to 109 conditions per place. [2023-11-29 20:27:26,504 INFO L140 encePairwiseOnDemand]: 223/262 looper letters, 208 selfloop transitions, 36 changer transitions 59/446 dead transitions. [2023-11-29 20:27:26,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 446 transitions, 2167 flow [2023-11-29 20:27:26,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 20:27:26,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-11-29 20:27:26,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5611 transitions. [2023-11-29 20:27:26,516 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.611886586695747 [2023-11-29 20:27:26,517 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5611 transitions. [2023-11-29 20:27:26,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5611 transitions. [2023-11-29 20:27:26,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 20:27:26,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5611 transitions. [2023-11-29 20:27:26,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 160.31428571428572) internal successors, (5611), 35 states have internal predecessors, (5611), 0 states have call successors, (0), 0 states 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 20:27:26,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 262.0) internal successors, (9432), 36 states have internal predecessors, (9432), 0 states have call successors, (0), 0 states 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 20:27:26,546 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 262.0) internal successors, (9432), 36 states have internal predecessors, (9432), 0 states have call successors, (0), 0 states 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 20:27:26,546 INFO L307 CegarLoopForPetriNet]: 237 programPoint places, 68 predicate places. [2023-11-29 20:27:26,546 INFO L500 AbstractCegarLoop]: Abstraction has has 305 places, 446 transitions, 2167 flow [2023-11-29 20:27:26,548 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 156.7) internal successors, (3134), 20 states have internal predecessors, (3134), 0 states have call successors, (0), 0 states 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 20:27:26,548 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 20:27:26,548 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:26,548 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 20:27:26,549 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 20:27:26,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 20:27:26,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1026696520, now seen corresponding path program 1 times [2023-11-29 20:27:26,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 20:27:26,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508430737] [2023-11-29 20:27:26,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:27:26,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 20:27:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:27:26,909 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 20:27:26,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 20:27:26,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508430737] [2023-11-29 20:27:26,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508430737] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 20:27:26,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316346402] [2023-11-29 20:27:26,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:27:26,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 20:27:26,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 20:27:26,916 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 20:27:26,928 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 20:27:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:27:27,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 20:27:27,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 20:27:27,512 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 20:27:27,512 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 20:27:27,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 20:27:27,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316346402] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 20:27:27,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 20:27:27,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15, 14] total 30 [2023-11-29 20:27:27,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935722835] [2023-11-29 20:27:27,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 20:27:27,835 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 20:27:27,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 20:27:27,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 20:27:27,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2023-11-29 20:27:27,838 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 262 [2023-11-29 20:27:27,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 446 transitions, 2167 flow. Second operand has 14 states, 14 states have (on average 158.57142857142858) internal successors, (2220), 14 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states 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 20:27:27,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 20:27:27,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 262 [2023-11-29 20:27:27,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 20:27:28,663 INFO L124 PetriNetUnfolderBase]: 191/2553 cut-off events. [2023-11-29 20:27:28,663 INFO L125 PetriNetUnfolderBase]: For 812/1106 co-relation queries the response was YES. [2023-11-29 20:27:28,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4463 conditions, 2553 events. 191/2553 cut-off events. For 812/1106 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 21309 event pairs, 61 based on Foata normal form. 0/2292 useless extension candidates. Maximal degree in co-relation 850. Up to 292 conditions per place. [2023-11-29 20:27:28,678 INFO L140 encePairwiseOnDemand]: 231/262 looper letters, 279 selfloop transitions, 31 changer transitions 77/530 dead transitions. [2023-11-29 20:27:28,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 530 transitions, 3469 flow [2023-11-29 20:27:28,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 20:27:28,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-29 20:27:28,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3915 transitions. [2023-11-29 20:27:28,685 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6226145038167938 [2023-11-29 20:27:28,685 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3915 transitions. [2023-11-29 20:27:28,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3915 transitions. [2023-11-29 20:27:28,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 20:27:28,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3915 transitions. [2023-11-29 20:27:28,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 163.125) internal successors, (3915), 24 states have internal predecessors, (3915), 0 states have call successors, (0), 0 states 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 20:27:28,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 262.0) internal successors, (6550), 25 states have internal predecessors, (6550), 0 states have call successors, (0), 0 states 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 20:27:28,703 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 262.0) internal successors, (6550), 25 states have internal predecessors, (6550), 0 states have call successors, (0), 0 states 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 20:27:28,704 INFO L307 CegarLoopForPetriNet]: 237 programPoint places, 91 predicate places. [2023-11-29 20:27:28,704 INFO L500 AbstractCegarLoop]: Abstraction has has 328 places, 530 transitions, 3469 flow [2023-11-29 20:27:28,705 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 158.57142857142858) internal successors, (2220), 14 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states 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 20:27:28,705 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 20:27:28,705 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:28,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-29 20:27:28,911 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 20:27:28,912 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 20:27:28,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 20:27:28,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1518598300, now seen corresponding path program 2 times [2023-11-29 20:27:28,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 20:27:28,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71888197] [2023-11-29 20:27:28,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:27:28,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 20:27:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:27:29,281 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 20:27:29,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 20:27:29,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71888197] [2023-11-29 20:27:29,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71888197] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 20:27:29,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26542781] [2023-11-29 20:27:29,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 20:27:29,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 20:27:29,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 20:27:29,284 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 20:27:29,314 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 20:27:29,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 20:27:29,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 20:27:29,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 20:27:29,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 20:27:29,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 20:27:29,696 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 20:27:29,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26542781] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 20:27:29,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 20:27:29,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [15] total 25 [2023-11-29 20:27:29,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420334857] [2023-11-29 20:27:29,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 20:27:29,697 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 20:27:29,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 20:27:29,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 20:27:29,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2023-11-29 20:27:29,702 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 262 [2023-11-29 20:27:29,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 530 transitions, 3469 flow. Second operand has 12 states, 12 states have (on average 181.83333333333334) internal successors, (2182), 12 states have internal predecessors, (2182), 0 states have call successors, (0), 0 states 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 20:27:29,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 20:27:29,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 262 [2023-11-29 20:27:29,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 20:27:30,494 INFO L124 PetriNetUnfolderBase]: 223/3150 cut-off events. [2023-11-29 20:27:30,495 INFO L125 PetriNetUnfolderBase]: For 1894/2734 co-relation queries the response was YES. [2023-11-29 20:27:30,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6428 conditions, 3150 events. 223/3150 cut-off events. For 1894/2734 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 27434 event pairs, 28 based on Foata normal form. 10/2827 useless extension candidates. Maximal degree in co-relation 932. Up to 360 conditions per place. [2023-11-29 20:27:30,516 INFO L140 encePairwiseOnDemand]: 238/262 looper letters, 319 selfloop transitions, 24 changer transitions 143/686 dead transitions. [2023-11-29 20:27:30,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 686 transitions, 5734 flow [2023-11-29 20:27:30,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 20:27:30,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-29 20:27:30,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3664 transitions. [2023-11-29 20:27:30,524 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6992366412213741 [2023-11-29 20:27:30,524 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3664 transitions. [2023-11-29 20:27:30,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3664 transitions. [2023-11-29 20:27:30,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 20:27:30,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3664 transitions. [2023-11-29 20:27:30,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 183.2) internal successors, (3664), 20 states have internal predecessors, (3664), 0 states have call successors, (0), 0 states 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 20:27:30,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 262.0) internal successors, (5502), 21 states have internal predecessors, (5502), 0 states have call successors, (0), 0 states 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 20:27:30,539 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 262.0) internal successors, (5502), 21 states have internal predecessors, (5502), 0 states have call successors, (0), 0 states 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 20:27:30,540 INFO L307 CegarLoopForPetriNet]: 237 programPoint places, 110 predicate places. [2023-11-29 20:27:30,540 INFO L500 AbstractCegarLoop]: Abstraction has has 347 places, 686 transitions, 5734 flow [2023-11-29 20:27:30,541 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 181.83333333333334) internal successors, (2182), 12 states have internal predecessors, (2182), 0 states have call successors, (0), 0 states 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 20:27:30,541 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 20:27:30,541 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:30,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 20:27:30,749 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,SelfDestructingSolverStorable3 [2023-11-29 20:27:30,749 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 20:27:30,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 20:27:30,750 INFO L85 PathProgramCache]: Analyzing trace with hash -602725692, now seen corresponding path program 1 times [2023-11-29 20:27:30,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 20:27:30,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615104337] [2023-11-29 20:27:30,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:27:30,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 20:27:30,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:27:31,051 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 20:27:31,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 20:27:31,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615104337] [2023-11-29 20:27:31,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615104337] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 20:27:31,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168894417] [2023-11-29 20:27:31,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:27:31,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 20:27:31,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 20:27:31,054 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 20:27:31,071 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 20:27:31,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:27:31,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 20:27:31,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 20:27:31,520 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 20:27:31,521 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 20:27:31,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 20:27:31,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168894417] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 20:27:31,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 20:27:31,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15, 14] total 30 [2023-11-29 20:27:31,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419667329] [2023-11-29 20:27:31,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 20:27:31,844 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 20:27:31,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 20:27:31,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 20:27:31,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2023-11-29 20:27:31,848 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 262 [2023-11-29 20:27:31,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 686 transitions, 5734 flow. Second operand has 14 states, 14 states have (on average 158.57142857142858) internal successors, (2220), 14 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states 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 20:27:31,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 20:27:31,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 262 [2023-11-29 20:27:31,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 20:27:32,753 INFO L124 PetriNetUnfolderBase]: 217/3180 cut-off events. [2023-11-29 20:27:32,754 INFO L125 PetriNetUnfolderBase]: For 2876/3786 co-relation queries the response was YES. [2023-11-29 20:27:32,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7399 conditions, 3180 events. 217/3180 cut-off events. For 2876/3786 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 27554 event pairs, 24 based on Foata normal form. 4/2854 useless extension candidates. Maximal degree in co-relation 1017. Up to 383 conditions per place. [2023-11-29 20:27:32,776 INFO L140 encePairwiseOnDemand]: 228/262 looper letters, 390 selfloop transitions, 35 changer transitions 151/719 dead transitions. [2023-11-29 20:27:32,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 719 transitions, 7228 flow [2023-11-29 20:27:32,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 20:27:32,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-29 20:27:32,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3908 transitions. [2023-11-29 20:27:32,783 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.621501272264631 [2023-11-29 20:27:32,783 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3908 transitions. [2023-11-29 20:27:32,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3908 transitions. [2023-11-29 20:27:32,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 20:27:32,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3908 transitions. [2023-11-29 20:27:32,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 162.83333333333334) internal successors, (3908), 24 states have internal predecessors, (3908), 0 states have call successors, (0), 0 states 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 20:27:32,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 262.0) internal successors, (6550), 25 states have internal predecessors, (6550), 0 states have call successors, (0), 0 states 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 20:27:32,798 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 262.0) internal successors, (6550), 25 states have internal predecessors, (6550), 0 states have call successors, (0), 0 states 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 20:27:32,800 INFO L307 CegarLoopForPetriNet]: 237 programPoint places, 133 predicate places. [2023-11-29 20:27:32,800 INFO L500 AbstractCegarLoop]: Abstraction has has 370 places, 719 transitions, 7228 flow [2023-11-29 20:27:32,801 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 158.57142857142858) internal successors, (2220), 14 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states 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 20:27:32,801 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 20:27:32,801 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:32,807 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 20:27:33,006 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 20:27:33,007 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 20:27:33,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 20:27:33,007 INFO L85 PathProgramCache]: Analyzing trace with hash -698167756, now seen corresponding path program 1 times [2023-11-29 20:27:33,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 20:27:33,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082073565] [2023-11-29 20:27:33,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:27:33,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 20:27:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:27:33,262 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 20:27:33,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 20:27:33,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082073565] [2023-11-29 20:27:33,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082073565] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 20:27:33,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88320142] [2023-11-29 20:27:33,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:27:33,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 20:27:33,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 20:27:33,264 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 20:27:33,283 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 20:27:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:27:33,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 20:27:33,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 20:27:33,617 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 20:27:33,618 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 20:27:33,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 20:27:33,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88320142] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 20:27:33,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 20:27:33,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 23 [2023-11-29 20:27:33,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327396354] [2023-11-29 20:27:33,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 20:27:33,919 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 20:27:33,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 20:27:33,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 20:27:33,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2023-11-29 20:27:33,923 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 262 [2023-11-29 20:27:33,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 719 transitions, 7228 flow. Second operand has 11 states, 11 states have (on average 198.9090909090909) internal successors, (2188), 11 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states 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 20:27:33,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 20:27:33,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 262 [2023-11-29 20:27:33,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 20:27:34,721 INFO L124 PetriNetUnfolderBase]: 425/4401 cut-off events. [2023-11-29 20:27:34,722 INFO L125 PetriNetUnfolderBase]: For 5754/6722 co-relation queries the response was YES. [2023-11-29 20:27:34,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10438 conditions, 4401 events. 425/4401 cut-off events. For 5754/6722 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 43488 event pairs, 93 based on Foata normal form. 5/3945 useless extension candidates. Maximal degree in co-relation 1663. Up to 477 conditions per place. [2023-11-29 20:27:34,751 INFO L140 encePairwiseOnDemand]: 242/262 looper letters, 199 selfloop transitions, 36 changer transitions 151/775 dead transitions. [2023-11-29 20:27:34,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 775 transitions, 8268 flow [2023-11-29 20:27:34,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 20:27:34,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 20:27:34,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3250 transitions. [2023-11-29 20:27:34,755 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7752862595419847 [2023-11-29 20:27:34,755 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3250 transitions. [2023-11-29 20:27:34,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3250 transitions. [2023-11-29 20:27:34,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 20:27:34,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3250 transitions. [2023-11-29 20:27:34,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 203.125) internal successors, (3250), 16 states have internal predecessors, (3250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 20:27:34,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 262.0) internal successors, (4454), 17 states have internal predecessors, (4454), 0 states have call successors, (0), 0 states 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 20:27:34,766 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 262.0) internal successors, (4454), 17 states have internal predecessors, (4454), 0 states have call successors, (0), 0 states 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 20:27:34,766 INFO L307 CegarLoopForPetriNet]: 237 programPoint places, 148 predicate places. [2023-11-29 20:27:34,766 INFO L500 AbstractCegarLoop]: Abstraction has has 385 places, 775 transitions, 8268 flow [2023-11-29 20:27:34,767 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 198.9090909090909) internal successors, (2188), 11 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states 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 20:27:34,767 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 20:27:34,767 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:34,776 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 20:27:34,976 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 20:27:34,977 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 20:27:34,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 20:27:34,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1686524933, now seen corresponding path program 1 times [2023-11-29 20:27:34,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 20:27:34,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978119093] [2023-11-29 20:27:34,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:27:34,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 20:27:35,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:27:35,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 20:27:35,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 20:27:35,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978119093] [2023-11-29 20:27:35,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978119093] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 20:27:35,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609833174] [2023-11-29 20:27:35,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:27:35,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 20:27:35,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 20:27:35,260 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 20:27:35,287 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 20:27:35,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:27:35,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 20:27:35,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 20:27:35,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 20:27:35,575 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 20:27:35,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 20:27:35,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609833174] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 20:27:35,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 20:27:35,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 23 [2023-11-29 20:27:35,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668611361] [2023-11-29 20:27:35,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 20:27:35,877 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 20:27:35,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 20:27:35,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 20:27:35,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2023-11-29 20:27:35,880 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 262 [2023-11-29 20:27:35,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 775 transitions, 8268 flow. Second operand has 11 states, 11 states have (on average 199.0) internal successors, (2189), 11 states have internal predecessors, (2189), 0 states have call successors, (0), 0 states 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 20:27:35,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 20:27:35,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 262 [2023-11-29 20:27:35,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 20:27:37,004 INFO L124 PetriNetUnfolderBase]: 673/6246 cut-off events. [2023-11-29 20:27:37,005 INFO L125 PetriNetUnfolderBase]: For 13322/14234 co-relation queries the response was YES. [2023-11-29 20:27:37,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15666 conditions, 6246 events. 673/6246 cut-off events. For 13322/14234 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 67074 event pairs, 207 based on Foata normal form. 16/5612 useless extension candidates. Maximal degree in co-relation 2833. Up to 654 conditions per place. [2023-11-29 20:27:37,039 INFO L140 encePairwiseOnDemand]: 242/262 looper letters, 243 selfloop transitions, 49 changer transitions 151/846 dead transitions. [2023-11-29 20:27:37,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 846 transitions, 9752 flow [2023-11-29 20:27:37,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 20:27:37,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 20:27:37,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3247 transitions. [2023-11-29 20:27:37,043 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7745706106870229 [2023-11-29 20:27:37,044 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3247 transitions. [2023-11-29 20:27:37,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3247 transitions. [2023-11-29 20:27:37,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 20:27:37,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3247 transitions. [2023-11-29 20:27:37,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 202.9375) internal successors, (3247), 16 states have internal predecessors, (3247), 0 states have call successors, (0), 0 states 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 20:27:37,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 262.0) internal successors, (4454), 17 states have internal predecessors, (4454), 0 states have call successors, (0), 0 states 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 20:27:37,055 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 262.0) internal successors, (4454), 17 states have internal predecessors, (4454), 0 states have call successors, (0), 0 states 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 20:27:37,056 INFO L307 CegarLoopForPetriNet]: 237 programPoint places, 163 predicate places. [2023-11-29 20:27:37,056 INFO L500 AbstractCegarLoop]: Abstraction has has 400 places, 846 transitions, 9752 flow [2023-11-29 20:27:37,057 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 199.0) internal successors, (2189), 11 states have internal predecessors, (2189), 0 states have call successors, (0), 0 states 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 20:27:37,057 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 20:27:37,057 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:37,065 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 20:27:37,262 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 20:27:37,263 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 20:27:37,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 20:27:37,263 INFO L85 PathProgramCache]: Analyzing trace with hash 574894673, now seen corresponding path program 1 times [2023-11-29 20:27:37,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 20:27:37,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978653455] [2023-11-29 20:27:37,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:27:37,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 20:27:37,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:27:37,389 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 20:27:37,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 20:27:37,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978653455] [2023-11-29 20:27:37,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978653455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 20:27:37,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 20:27:37,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 20:27:37,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612385115] [2023-11-29 20:27:37,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 20:27:37,393 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 20:27:37,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 20:27:37,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 20:27:37,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 20:27:37,395 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 262 [2023-11-29 20:27:37,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 846 transitions, 9752 flow. Second operand has 7 states, 7 states have (on average 202.28571428571428) internal successors, (1416), 7 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states 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 20:27:37,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 20:27:37,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 262 [2023-11-29 20:27:37,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 20:27:37,897 INFO L124 PetriNetUnfolderBase]: 470/4237 cut-off events. [2023-11-29 20:27:37,897 INFO L125 PetriNetUnfolderBase]: For 12823/13623 co-relation queries the response was YES. [2023-11-29 20:27:37,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12131 conditions, 4237 events. 470/4237 cut-off events. For 12823/13623 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 40801 event pairs, 138 based on Foata normal form. 10/3840 useless extension candidates. Maximal degree in co-relation 2842. Up to 654 conditions per place. [2023-11-29 20:27:37,919 INFO L140 encePairwiseOnDemand]: 250/262 looper letters, 227 selfloop transitions, 13 changer transitions 147/714 dead transitions. [2023-11-29 20:27:37,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 714 transitions, 8540 flow [2023-11-29 20:27:37,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 20:27:37,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 20:27:37,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2057 transitions. [2023-11-29 20:27:37,922 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7851145038167939 [2023-11-29 20:27:37,923 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2057 transitions. [2023-11-29 20:27:37,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2057 transitions. [2023-11-29 20:27:37,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 20:27:37,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2057 transitions. [2023-11-29 20:27:37,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 205.7) internal successors, (2057), 10 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states 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 20:27:37,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 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 20:27:37,930 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 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 20:27:37,930 INFO L307 CegarLoopForPetriNet]: 237 programPoint places, 170 predicate places. [2023-11-29 20:27:37,931 INFO L500 AbstractCegarLoop]: Abstraction has has 407 places, 714 transitions, 8540 flow [2023-11-29 20:27:37,931 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 202.28571428571428) internal successors, (1416), 7 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states 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 20:27:37,931 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 20:27:37,931 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:37,932 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 20:27:37,932 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 20:27:37,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 20:27:37,932 INFO L85 PathProgramCache]: Analyzing trace with hash -750571872, now seen corresponding path program 1 times [2023-11-29 20:27:37,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 20:27:37,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578594184] [2023-11-29 20:27:37,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:27:37,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 20:27:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:27:38,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 20:27:38,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 20:27:38,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578594184] [2023-11-29 20:27:38,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578594184] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 20:27:38,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 20:27:38,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 20:27:38,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099430898] [2023-11-29 20:27:38,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 20:27:38,036 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 20:27:38,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 20:27:38,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 20:27:38,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 20:27:38,037 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 262 [2023-11-29 20:27:38,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 714 transitions, 8540 flow. Second operand has 7 states, 7 states have (on average 202.28571428571428) internal successors, (1416), 7 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states 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 20:27:38,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 20:27:38,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 262 [2023-11-29 20:27:38,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 20:27:38,623 INFO L124 PetriNetUnfolderBase]: 376/3370 cut-off events. [2023-11-29 20:27:38,623 INFO L125 PetriNetUnfolderBase]: For 12858/13942 co-relation queries the response was YES. [2023-11-29 20:27:38,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10833 conditions, 3370 events. 376/3370 cut-off events. For 12858/13942 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 29839 event pairs, 107 based on Foata normal form. 8/3045 useless extension candidates. Maximal degree in co-relation 3028. Up to 653 conditions per place. [2023-11-29 20:27:38,643 INFO L140 encePairwiseOnDemand]: 250/262 looper letters, 148 selfloop transitions, 8 changer transitions 216/640 dead transitions. [2023-11-29 20:27:38,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 640 transitions, 8032 flow [2023-11-29 20:27:38,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 20:27:38,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 20:27:38,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2055 transitions. [2023-11-29 20:27:38,646 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7843511450381679 [2023-11-29 20:27:38,646 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2055 transitions. [2023-11-29 20:27:38,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2055 transitions. [2023-11-29 20:27:38,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 20:27:38,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2055 transitions. [2023-11-29 20:27:38,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 205.5) internal successors, (2055), 10 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states 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 20:27:38,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 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 20:27:38,653 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 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 20:27:38,653 INFO L307 CegarLoopForPetriNet]: 237 programPoint places, 176 predicate places. [2023-11-29 20:27:38,653 INFO L500 AbstractCegarLoop]: Abstraction has has 413 places, 640 transitions, 8032 flow [2023-11-29 20:27:38,654 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 202.28571428571428) internal successors, (1416), 7 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states 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 20:27:38,654 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 20:27:38,654 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:38,654 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 20:27:38,654 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 20:27:38,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 20:27:38,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1225455081, now seen corresponding path program 1 times [2023-11-29 20:27:38,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 20:27:38,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131000183] [2023-11-29 20:27:38,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:27:38,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 20:27:38,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:27:39,178 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 20:27:39,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 20:27:39,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131000183] [2023-11-29 20:27:39,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131000183] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 20:27:39,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230163238] [2023-11-29 20:27:39,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:27:39,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 20:27:39,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 20:27:39,180 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 20:27:39,205 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 20:27:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:27:39,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 20:27:39,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 20:27:39,848 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 20:27:39,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 20:27:40,428 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 20:27:40,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230163238] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 20:27:40,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 20:27:40,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2023-11-29 20:27:40,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972584357] [2023-11-29 20:27:40,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 20:27:40,430 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-11-29 20:27:40,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 20:27:40,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-11-29 20:27:40,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1551, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 20:27:40,436 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 262 [2023-11-29 20:27:40,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 640 transitions, 8032 flow. Second operand has 43 states, 43 states have (on average 154.95348837209303) internal successors, (6663), 43 states have internal predecessors, (6663), 0 states have call successors, (0), 0 states 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 20:27:40,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 20:27:40,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 262 [2023-11-29 20:27:40,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 20:27:42,652 INFO L124 PetriNetUnfolderBase]: 912/8128 cut-off events. [2023-11-29 20:27:42,652 INFO L125 PetriNetUnfolderBase]: For 36888/39659 co-relation queries the response was YES. [2023-11-29 20:27:42,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26774 conditions, 8128 events. 912/8128 cut-off events. For 36888/39659 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 91180 event pairs, 287 based on Foata normal form. 29/7345 useless extension candidates. Maximal degree in co-relation 3447. Up to 1653 conditions per place. [2023-11-29 20:27:42,693 INFO L140 encePairwiseOnDemand]: 226/262 looper letters, 588 selfloop transitions, 57 changer transitions 330/1130 dead transitions. [2023-11-29 20:27:42,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 1130 transitions, 17580 flow [2023-11-29 20:27:42,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-29 20:27:42,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-11-29 20:27:42,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7070 transitions. [2023-11-29 20:27:42,700 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5996607294317218 [2023-11-29 20:27:42,700 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7070 transitions. [2023-11-29 20:27:42,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7070 transitions. [2023-11-29 20:27:42,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 20:27:42,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7070 transitions. [2023-11-29 20:27:42,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 157.11111111111111) internal successors, (7070), 45 states have internal predecessors, (7070), 0 states have call successors, (0), 0 states 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 20:27:42,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 262.0) internal successors, (12052), 46 states have internal predecessors, (12052), 0 states have call successors, (0), 0 states 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 20:27:42,722 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 262.0) internal successors, (12052), 46 states have internal predecessors, (12052), 0 states have call successors, (0), 0 states 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 20:27:42,723 INFO L307 CegarLoopForPetriNet]: 237 programPoint places, 220 predicate places. [2023-11-29 20:27:42,723 INFO L500 AbstractCegarLoop]: Abstraction has has 457 places, 1130 transitions, 17580 flow [2023-11-29 20:27:42,724 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 154.95348837209303) internal successors, (6663), 43 states have internal predecessors, (6663), 0 states have call successors, (0), 0 states 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 20:27:42,724 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 20:27:42,725 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:42,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 20:27:42,932 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 20:27:42,933 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 20:27:42,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 20:27:42,934 INFO L85 PathProgramCache]: Analyzing trace with hash -783176925, now seen corresponding path program 1 times [2023-11-29 20:27:42,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 20:27:42,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578970821] [2023-11-29 20:27:42,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:27:42,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 20:27:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:27:43,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 20:27:43,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 20:27:43,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578970821] [2023-11-29 20:27:43,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578970821] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 20:27:43,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 20:27:43,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 20:27:43,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366133727] [2023-11-29 20:27:43,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 20:27:43,054 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 20:27:43,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 20:27:43,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 20:27:43,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 20:27:43,056 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 262 [2023-11-29 20:27:43,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 1130 transitions, 17580 flow. Second operand has 7 states, 7 states have (on average 202.85714285714286) internal successors, (1420), 7 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states 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 20:27:43,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 20:27:43,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 262 [2023-11-29 20:27:43,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 20:27:44,222 INFO L124 PetriNetUnfolderBase]: 709/5973 cut-off events. [2023-11-29 20:27:44,222 INFO L125 PetriNetUnfolderBase]: For 37203/39903 co-relation queries the response was YES. [2023-11-29 20:27:44,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22644 conditions, 5973 events. 709/5973 cut-off events. For 37203/39903 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 60979 event pairs, 209 based on Foata normal form. 46/5460 useless extension candidates. Maximal degree in co-relation 4002. Up to 1349 conditions per place. [2023-11-29 20:27:44,258 INFO L140 encePairwiseOnDemand]: 250/262 looper letters, 286 selfloop transitions, 25 changer transitions 327/1002 dead transitions. [2023-11-29 20:27:44,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 1002 transitions, 16324 flow [2023-11-29 20:27:44,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 20:27:44,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 20:27:44,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2042 transitions. [2023-11-29 20:27:44,261 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7793893129770992 [2023-11-29 20:27:44,262 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2042 transitions. [2023-11-29 20:27:44,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2042 transitions. [2023-11-29 20:27:44,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 20:27:44,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2042 transitions. [2023-11-29 20:27:44,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 204.2) internal successors, (2042), 10 states have internal predecessors, (2042), 0 states have call successors, (0), 0 states 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 20:27:44,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 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 20:27:44,267 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 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 20:27:44,268 INFO L307 CegarLoopForPetriNet]: 237 programPoint places, 228 predicate places. [2023-11-29 20:27:44,268 INFO L500 AbstractCegarLoop]: Abstraction has has 465 places, 1002 transitions, 16324 flow [2023-11-29 20:27:44,268 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 202.85714285714286) internal successors, (1420), 7 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states 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 20:27:44,268 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 20:27:44,268 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:44,269 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 20:27:44,269 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 20:27:44,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 20:27:44,269 INFO L85 PathProgramCache]: Analyzing trace with hash -127747144, now seen corresponding path program 1 times [2023-11-29 20:27:44,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 20:27:44,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545012437] [2023-11-29 20:27:44,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:27:44,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 20:27:44,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:27:44,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 20:27:44,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 20:27:44,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545012437] [2023-11-29 20:27:44,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545012437] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 20:27:44,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 20:27:44,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 20:27:44,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34649831] [2023-11-29 20:27:44,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 20:27:44,388 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 20:27:44,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 20:27:44,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 20:27:44,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 20:27:44,390 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 262 [2023-11-29 20:27:44,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 1002 transitions, 16324 flow. Second operand has 7 states, 7 states have (on average 202.85714285714286) internal successors, (1420), 7 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states 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 20:27:44,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 20:27:44,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 262 [2023-11-29 20:27:44,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 20:27:45,303 INFO L124 PetriNetUnfolderBase]: 617/5244 cut-off events. [2023-11-29 20:27:45,303 INFO L125 PetriNetUnfolderBase]: For 37856/40794 co-relation queries the response was YES. [2023-11-29 20:27:45,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21574 conditions, 5244 events. 617/5244 cut-off events. For 37856/40794 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 51539 event pairs, 171 based on Foata normal form. 28/4780 useless extension candidates. Maximal degree in co-relation 4294. Up to 1204 conditions per place. [2023-11-29 20:27:45,328 INFO L140 encePairwiseOnDemand]: 250/262 looper letters, 230 selfloop transitions, 16 changer transitions 368/929 dead transitions. [2023-11-29 20:27:45,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 929 transitions, 15892 flow [2023-11-29 20:27:45,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 20:27:45,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 20:27:45,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2040 transitions. [2023-11-29 20:27:45,331 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7786259541984732 [2023-11-29 20:27:45,331 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2040 transitions. [2023-11-29 20:27:45,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2040 transitions. [2023-11-29 20:27:45,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 20:27:45,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2040 transitions. [2023-11-29 20:27:45,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 204.0) internal successors, (2040), 10 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states 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 20:27:45,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 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 20:27:45,336 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 262.0) internal successors, (2882), 11 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 20:27:45,338 INFO L307 CegarLoopForPetriNet]: 237 programPoint places, 235 predicate places. [2023-11-29 20:27:45,338 INFO L500 AbstractCegarLoop]: Abstraction has has 472 places, 929 transitions, 15892 flow [2023-11-29 20:27:45,338 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 202.85714285714286) internal successors, (1420), 7 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states 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 20:27:45,339 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 20:27:45,339 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:45,339 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 20:27:45,339 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 20:27:45,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 20:27:45,340 INFO L85 PathProgramCache]: Analyzing trace with hash -101835017, now seen corresponding path program 2 times [2023-11-29 20:27:45,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 20:27:45,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733004362] [2023-11-29 20:27:45,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:27:45,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 20:27:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:27:45,775 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 20:27:45,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 20:27:45,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733004362] [2023-11-29 20:27:45,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733004362] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 20:27:45,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807386184] [2023-11-29 20:27:45,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 20:27:45,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 20:27:45,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 20:27:45,780 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 20:27:45,782 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 20:27:45,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 20:27:45,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 20:27:45,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 20:27:45,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 20:27:46,175 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 20:27:46,176 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 20:27:46,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807386184] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 20:27:46,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 20:27:46,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18] total 28 [2023-11-29 20:27:46,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242174858] [2023-11-29 20:27:46,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 20:27:46,177 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 20:27:46,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 20:27:46,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 20:27:46,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2023-11-29 20:27:46,179 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 262 [2023-11-29 20:27:46,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 929 transitions, 15892 flow. Second operand has 12 states, 12 states have (on average 182.0) internal successors, (2184), 12 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states 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 20:27:46,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 20:27:46,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 262 [2023-11-29 20:27:46,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 20:27:47,430 INFO L124 PetriNetUnfolderBase]: 615/5179 cut-off events. [2023-11-29 20:27:47,431 INFO L125 PetriNetUnfolderBase]: For 46136/49354 co-relation queries the response was YES. [2023-11-29 20:27:47,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22815 conditions, 5179 events. 615/5179 cut-off events. For 46136/49354 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 50825 event pairs, 160 based on Foata normal form. 45/4737 useless extension candidates. Maximal degree in co-relation 4626. Up to 1197 conditions per place. [2023-11-29 20:27:47,459 INFO L140 encePairwiseOnDemand]: 238/262 looper letters, 381 selfloop transitions, 30 changer transitions 412/1033 dead transitions. [2023-11-29 20:27:47,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 1033 transitions, 19230 flow [2023-11-29 20:27:47,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 20:27:47,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-29 20:27:47,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3663 transitions. [2023-11-29 20:27:47,464 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6990458015267176 [2023-11-29 20:27:47,464 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3663 transitions. [2023-11-29 20:27:47,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3663 transitions. [2023-11-29 20:27:47,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 20:27:47,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3663 transitions. [2023-11-29 20:27:47,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 183.15) internal successors, (3663), 20 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states 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 20:27:47,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 262.0) internal successors, (5502), 21 states have internal predecessors, (5502), 0 states have call successors, (0), 0 states 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 20:27:47,473 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 262.0) internal successors, (5502), 21 states have internal predecessors, (5502), 0 states have call successors, (0), 0 states 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 20:27:47,474 INFO L307 CegarLoopForPetriNet]: 237 programPoint places, 254 predicate places. [2023-11-29 20:27:47,474 INFO L500 AbstractCegarLoop]: Abstraction has has 491 places, 1033 transitions, 19230 flow [2023-11-29 20:27:47,474 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 182.0) internal successors, (2184), 12 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states 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 20:27:47,475 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 20:27:47,475 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:47,483 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 20:27:47,680 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 20:27:47,680 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 20:27:47,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 20:27:47,681 INFO L85 PathProgramCache]: Analyzing trace with hash -771624749, now seen corresponding path program 1 times [2023-11-29 20:27:47,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 20:27:47,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314546012] [2023-11-29 20:27:47,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:27:47,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 20:27:47,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:27:48,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 20:27:48,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 20:27:48,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314546012] [2023-11-29 20:27:48,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314546012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 20:27:48,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 20:27:48,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-11-29 20:27:48,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945478775] [2023-11-29 20:27:48,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 20:27:48,422 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 20:27:48,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 20:27:48,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 20:27:48,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2023-11-29 20:27:48,426 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 262 [2023-11-29 20:27:48,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 1033 transitions, 19230 flow. Second operand has 20 states, 20 states have (on average 182.7) internal successors, (3654), 20 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:27:48,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 20:27:48,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 262 [2023-11-29 20:27:48,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 20:27:57,496 INFO L124 PetriNetUnfolderBase]: 14117/46462 cut-off events. [2023-11-29 20:27:57,496 INFO L125 PetriNetUnfolderBase]: For 206903/211318 co-relation queries the response was YES. [2023-11-29 20:27:57,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151270 conditions, 46462 events. 14117/46462 cut-off events. For 206903/211318 co-relation queries the response was YES. Maximal size of possible extension queue 1337. Compared 606259 event pairs, 5035 based on Foata normal form. 22/42923 useless extension candidates. Maximal degree in co-relation 42221. Up to 8239 conditions per place. [2023-11-29 20:27:57,771 INFO L140 encePairwiseOnDemand]: 231/262 looper letters, 500 selfloop transitions, 60 changer transitions 459/1410 dead transitions. [2023-11-29 20:27:57,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 1410 transitions, 27211 flow [2023-11-29 20:27:57,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-29 20:27:57,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-11-29 20:27:57,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 5491 transitions. [2023-11-29 20:27:57,776 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7226901816267439 [2023-11-29 20:27:57,776 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 5491 transitions. [2023-11-29 20:27:57,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 5491 transitions. [2023-11-29 20:27:57,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 20:27:57,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 5491 transitions. [2023-11-29 20:27:57,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 189.3448275862069) internal successors, (5491), 29 states have internal predecessors, (5491), 0 states have call successors, (0), 0 states 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 20:27:57,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 262.0) internal successors, (7860), 30 states have internal predecessors, (7860), 0 states have call successors, (0), 0 states 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 20:27:57,788 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 262.0) internal successors, (7860), 30 states have internal predecessors, (7860), 0 states have call successors, (0), 0 states 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 20:27:57,788 INFO L307 CegarLoopForPetriNet]: 237 programPoint places, 282 predicate places. [2023-11-29 20:27:57,789 INFO L500 AbstractCegarLoop]: Abstraction has has 519 places, 1410 transitions, 27211 flow [2023-11-29 20:27:57,789 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 182.7) internal successors, (3654), 20 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:27:57,789 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 20:27:57,789 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:57,789 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 20:27:57,790 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 20:27:57,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 20:27:57,790 INFO L85 PathProgramCache]: Analyzing trace with hash -618836397, now seen corresponding path program 1 times [2023-11-29 20:27:57,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 20:27:57,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767314876] [2023-11-29 20:27:57,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:27:57,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 20:27:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:27:58,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 20:27:58,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 20:27:58,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767314876] [2023-11-29 20:27:58,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767314876] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 20:27:58,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702498699] [2023-11-29 20:27:58,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:27:58,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 20:27:58,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 20:27:58,644 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 20:27:58,653 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 20:27:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:27:58,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-29 20:27:58,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 20:27:59,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 20:27:59,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 20:27:59,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 20:27:59,409 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-29 20:27:59,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2023-11-29 20:27:59,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 20:27:59,431 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 20:27:59,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 20:27:59,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702498699] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 20:27:59,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 20:27:59,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 10] total 43 [2023-11-29 20:27:59,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045827946] [2023-11-29 20:27:59,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 20:27:59,741 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-11-29 20:27:59,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 20:27:59,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-11-29 20:27:59,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1617, Unknown=23, NotChecked=0, Total=1806 [2023-11-29 20:27:59,747 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 262 [2023-11-29 20:27:59,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 1410 transitions, 27211 flow. Second operand has 43 states, 43 states have (on average 164.97674418604652) internal successors, (7094), 43 states have internal predecessors, (7094), 0 states have call successors, (0), 0 states 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 20:27:59,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 20:27:59,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 262 [2023-11-29 20:27:59,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 20:28:15,437 INFO L124 PetriNetUnfolderBase]: 20528/60297 cut-off events. [2023-11-29 20:28:15,437 INFO L125 PetriNetUnfolderBase]: For 302242/309835 co-relation queries the response was YES. [2023-11-29 20:28:15,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241551 conditions, 60297 events. 20528/60297 cut-off events. For 302242/309835 co-relation queries the response was YES. Maximal size of possible extension queue 1818. Compared 780868 event pairs, 3175 based on Foata normal form. 97/55812 useless extension candidates. Maximal degree in co-relation 69325. Up to 14983 conditions per place. [2023-11-29 20:28:15,901 INFO L140 encePairwiseOnDemand]: 220/262 looper letters, 1215 selfloop transitions, 163 changer transitions 462/2191 dead transitions. [2023-11-29 20:28:15,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 2191 transitions, 44022 flow [2023-11-29 20:28:15,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-29 20:28:15,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-11-29 20:28:15,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7525 transitions. [2023-11-29 20:28:15,909 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6527585010409438 [2023-11-29 20:28:15,909 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7525 transitions. [2023-11-29 20:28:15,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7525 transitions. [2023-11-29 20:28:15,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 20:28:15,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7525 transitions. [2023-11-29 20:28:15,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 171.02272727272728) internal successors, (7525), 44 states have internal predecessors, (7525), 0 states have call successors, (0), 0 states 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 20:28:15,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 262.0) internal successors, (11790), 45 states have internal predecessors, (11790), 0 states have call successors, (0), 0 states 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 20:28:15,929 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 262.0) internal successors, (11790), 45 states have internal predecessors, (11790), 0 states have call successors, (0), 0 states 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 20:28:15,930 INFO L307 CegarLoopForPetriNet]: 237 programPoint places, 325 predicate places. [2023-11-29 20:28:15,930 INFO L500 AbstractCegarLoop]: Abstraction has has 562 places, 2191 transitions, 44022 flow [2023-11-29 20:28:15,931 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 164.97674418604652) internal successors, (7094), 43 states have internal predecessors, (7094), 0 states have call successors, (0), 0 states 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 20:28:15,931 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 20:28:15,931 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:28:15,939 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 20:28:16,137 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,SelfDestructingSolverStorable14 [2023-11-29 20:28:16,137 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 20:28:16,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 20:28:16,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1573522323, now seen corresponding path program 2 times [2023-11-29 20:28:16,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 20:28:16,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074133696] [2023-11-29 20:28:16,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:28:16,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 20:28:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:28:16,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 20:28:16,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 20:28:16,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074133696] [2023-11-29 20:28:16,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074133696] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 20:28:16,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 20:28:16,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-11-29 20:28:16,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745554724] [2023-11-29 20:28:16,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 20:28:16,912 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 20:28:16,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 20:28:16,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 20:28:16,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2023-11-29 20:28:16,919 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 262 [2023-11-29 20:28:16,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 562 places, 2191 transitions, 44022 flow. Second operand has 20 states, 20 states have (on average 182.7) internal successors, (3654), 20 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:28:16,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 20:28:16,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 262 [2023-11-29 20:28:16,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 20:28:36,616 INFO L124 PetriNetUnfolderBase]: 22192/70533 cut-off events. [2023-11-29 20:28:36,616 INFO L125 PetriNetUnfolderBase]: For 353774/363421 co-relation queries the response was YES. [2023-11-29 20:28:36,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306201 conditions, 70533 events. 22192/70533 cut-off events. For 353774/363421 co-relation queries the response was YES. Maximal size of possible extension queue 2026. Compared 965722 event pairs, 3338 based on Foata normal form. 169/65471 useless extension candidates. Maximal degree in co-relation 87773. Up to 15412 conditions per place. [2023-11-29 20:28:37,164 INFO L140 encePairwiseOnDemand]: 232/262 looper letters, 1493 selfloop transitions, 95 changer transitions 462/2441 dead transitions. [2023-11-29 20:28:37,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 2441 transitions, 52761 flow [2023-11-29 20:28:37,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 20:28:37,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-29 20:28:37,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4546 transitions. [2023-11-29 20:28:37,168 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7229643765903307 [2023-11-29 20:28:37,168 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4546 transitions. [2023-11-29 20:28:37,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4546 transitions. [2023-11-29 20:28:37,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 20:28:37,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4546 transitions. [2023-11-29 20:28:37,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 189.41666666666666) internal successors, (4546), 24 states have internal predecessors, (4546), 0 states have call successors, (0), 0 states 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 20:28:37,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 262.0) internal successors, (6550), 25 states have internal predecessors, (6550), 0 states have call successors, (0), 0 states 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 20:28:37,177 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 262.0) internal successors, (6550), 25 states have internal predecessors, (6550), 0 states have call successors, (0), 0 states 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 20:28:37,178 INFO L307 CegarLoopForPetriNet]: 237 programPoint places, 348 predicate places. [2023-11-29 20:28:37,178 INFO L500 AbstractCegarLoop]: Abstraction has has 585 places, 2441 transitions, 52761 flow [2023-11-29 20:28:37,178 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 182.7) internal successors, (3654), 20 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:28:37,178 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 20:28:37,179 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:28:37,179 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 20:28:37,179 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 20:28:37,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 20:28:37,179 INFO L85 PathProgramCache]: Analyzing trace with hash 638295047, now seen corresponding path program 3 times [2023-11-29 20:28:37,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 20:28:37,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414401972] [2023-11-29 20:28:37,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:28:37,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 20:28:37,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:28:37,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 20:28:37,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 20:28:37,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414401972] [2023-11-29 20:28:37,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414401972] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 20:28:37,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424011389] [2023-11-29 20:28:37,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 20:28:37,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 20:28:37,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 20:28:37,800 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 20:28:37,804 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 20:28:37,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 20:28:37,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 20:28:37,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-29 20:28:37,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 20:28:38,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 20:28:38,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 20:28:38,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 20:28:38,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 20:28:38,842 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 20:28:39,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 20:28:39,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424011389] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 20:28:39,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 20:28:39,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 10] total 50 [2023-11-29 20:28:39,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010308453] [2023-11-29 20:28:39,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 20:28:39,171 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-29 20:28:39,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 20:28:39,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-29 20:28:39,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=2170, Unknown=31, NotChecked=0, Total=2450 [2023-11-29 20:28:39,177 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 262 [2023-11-29 20:28:39,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 2441 transitions, 52761 flow. Second operand has 50 states, 50 states have (on average 164.54) internal successors, (8227), 50 states have internal predecessors, (8227), 0 states have call successors, (0), 0 states 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 20:28:39,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 20:28:39,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 262 [2023-11-29 20:28:39,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 20:29:07,369 INFO L124 PetriNetUnfolderBase]: 27340/84114 cut-off events. [2023-11-29 20:29:07,370 INFO L125 PetriNetUnfolderBase]: For 443813/455375 co-relation queries the response was YES. [2023-11-29 20:29:07,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 410887 conditions, 84114 events. 27340/84114 cut-off events. For 443813/455375 co-relation queries the response was YES. Maximal size of possible extension queue 2462. Compared 1164375 event pairs, 2073 based on Foata normal form. 225/78141 useless extension candidates. Maximal degree in co-relation 120393. Up to 17213 conditions per place. [2023-11-29 20:29:08,118 INFO L140 encePairwiseOnDemand]: 221/262 looper letters, 2150 selfloop transitions, 294 changer transitions 462/3257 dead transitions. [2023-11-29 20:29:08,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 3257 transitions, 73767 flow [2023-11-29 20:29:08,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-11-29 20:29:08,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-11-29 20:29:08,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 7340 transitions. [2023-11-29 20:29:08,123 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6515178412923842 [2023-11-29 20:29:08,123 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 7340 transitions. [2023-11-29 20:29:08,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 7340 transitions. [2023-11-29 20:29:08,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 20:29:08,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 7340 transitions. [2023-11-29 20:29:08,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 170.69767441860466) internal successors, (7340), 43 states have internal predecessors, (7340), 0 states have call successors, (0), 0 states 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 20:29:08,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 262.0) internal successors, (11528), 44 states have internal predecessors, (11528), 0 states have call successors, (0), 0 states 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 20:29:08,138 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 262.0) internal successors, (11528), 44 states have internal predecessors, (11528), 0 states have call successors, (0), 0 states 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 20:29:08,139 INFO L307 CegarLoopForPetriNet]: 237 programPoint places, 390 predicate places. [2023-11-29 20:29:08,139 INFO L500 AbstractCegarLoop]: Abstraction has has 627 places, 3257 transitions, 73767 flow [2023-11-29 20:29:08,140 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 164.54) internal successors, (8227), 50 states have internal predecessors, (8227), 0 states have call successors, (0), 0 states 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 20:29:08,140 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 20:29:08,140 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:29:08,150 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 20:29:08,345 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,SelfDestructingSolverStorable16 [2023-11-29 20:29:08,346 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 20:29:08,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 20:29:08,346 INFO L85 PathProgramCache]: Analyzing trace with hash -159187021, now seen corresponding path program 4 times [2023-11-29 20:29:08,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 20:29:08,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369787347] [2023-11-29 20:29:08,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:29:08,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 20:29:08,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:29:09,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 20:29:09,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 20:29:09,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369787347] [2023-11-29 20:29:09,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369787347] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 20:29:09,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 20:29:09,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-11-29 20:29:09,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857986018] [2023-11-29 20:29:09,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 20:29:09,047 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 20:29:09,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 20:29:09,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 20:29:09,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-11-29 20:29:09,049 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 262 [2023-11-29 20:29:09,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 627 places, 3257 transitions, 73767 flow. Second operand has 20 states, 20 states have (on average 182.7) internal successors, (3654), 20 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:29:09,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 20:29:09,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 262 [2023-11-29 20:29:09,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 20:29:42,506 INFO L124 PetriNetUnfolderBase]: 28582/86172 cut-off events. [2023-11-29 20:29:42,506 INFO L125 PetriNetUnfolderBase]: For 496983/514491 co-relation queries the response was YES. [2023-11-29 20:29:42,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473350 conditions, 86172 events. 28582/86172 cut-off events. For 496983/514491 co-relation queries the response was YES. Maximal size of possible extension queue 2543. Compared 1186806 event pairs, 2159 based on Foata normal form. 220/80023 useless extension candidates. Maximal degree in co-relation 139290. Up to 21416 conditions per place. [2023-11-29 20:29:43,335 INFO L140 encePairwiseOnDemand]: 230/262 looper letters, 2458 selfloop transitions, 184 changer transitions 462/3495 dead transitions. [2023-11-29 20:29:43,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 654 places, 3495 transitions, 83805 flow [2023-11-29 20:29:43,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 20:29:43,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-29 20:29:43,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 5299 transitions. [2023-11-29 20:29:43,338 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7223282442748091 [2023-11-29 20:29:43,338 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 5299 transitions. [2023-11-29 20:29:43,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 5299 transitions. [2023-11-29 20:29:43,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 20:29:43,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 5299 transitions. [2023-11-29 20:29:43,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 189.25) internal successors, (5299), 28 states have internal predecessors, (5299), 0 states have call successors, (0), 0 states 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 20:29:43,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 262.0) internal successors, (7598), 29 states have internal predecessors, (7598), 0 states have call successors, (0), 0 states 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 20:29:43,349 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 262.0) internal successors, (7598), 29 states have internal predecessors, (7598), 0 states have call successors, (0), 0 states 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 20:29:43,350 INFO L307 CegarLoopForPetriNet]: 237 programPoint places, 417 predicate places. [2023-11-29 20:29:43,350 INFO L500 AbstractCegarLoop]: Abstraction has has 654 places, 3495 transitions, 83805 flow [2023-11-29 20:29:43,350 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 182.7) internal successors, (3654), 20 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:29:43,351 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 20:29:43,351 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:29:43,351 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 20:29:43,351 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 20:29:43,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 20:29:43,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1902864595, now seen corresponding path program 5 times [2023-11-29 20:29:43,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 20:29:43,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462187622] [2023-11-29 20:29:43,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:29:43,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 20:29:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:29:44,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 20:29:44,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 20:29:44,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462187622] [2023-11-29 20:29:44,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462187622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 20:29:44,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 20:29:44,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-11-29 20:29:44,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242795340] [2023-11-29 20:29:44,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 20:29:44,041 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 20:29:44,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 20:29:44,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 20:29:44,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2023-11-29 20:29:44,044 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 262 [2023-11-29 20:29:44,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 654 places, 3495 transitions, 83805 flow. Second operand has 21 states, 21 states have (on average 182.57142857142858) internal successors, (3834), 21 states have internal predecessors, (3834), 0 states have call successors, (0), 0 states 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 20:29:44,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 20:29:44,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 262 [2023-11-29 20:29:44,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 20:30:20,426 INFO L124 PetriNetUnfolderBase]: 28654/86856 cut-off events. [2023-11-29 20:30:20,426 INFO L125 PetriNetUnfolderBase]: For 529775/550723 co-relation queries the response was YES. [2023-11-29 20:30:20,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522638 conditions, 86856 events. 28654/86856 cut-off events. For 529775/550723 co-relation queries the response was YES. Maximal size of possible extension queue 2571. Compared 1199484 event pairs, 1452 based on Foata normal form. 164/80591 useless extension candidates. Maximal degree in co-relation 154787. Up to 22475 conditions per place. [2023-11-29 20:30:21,388 INFO L140 encePairwiseOnDemand]: 229/262 looper letters, 2472 selfloop transitions, 191 changer transitions 462/3516 dead transitions. [2023-11-29 20:30:21,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 678 places, 3516 transitions, 89867 flow [2023-11-29 20:30:21,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 20:30:21,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-29 20:30:21,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 4727 transitions. [2023-11-29 20:30:21,392 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7216793893129771 [2023-11-29 20:30:21,392 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 4727 transitions. [2023-11-29 20:30:21,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 4727 transitions. [2023-11-29 20:30:21,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 20:30:21,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 4727 transitions. [2023-11-29 20:30:21,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 189.08) internal successors, (4727), 25 states have internal predecessors, (4727), 0 states have call successors, (0), 0 states 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 20:30:21,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 262.0) internal successors, (6812), 26 states have internal predecessors, (6812), 0 states have call successors, (0), 0 states 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 20:30:21,402 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 262.0) internal successors, (6812), 26 states have internal predecessors, (6812), 0 states have call successors, (0), 0 states 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 20:30:21,402 INFO L307 CegarLoopForPetriNet]: 237 programPoint places, 441 predicate places. [2023-11-29 20:30:21,402 INFO L500 AbstractCegarLoop]: Abstraction has has 678 places, 3516 transitions, 89867 flow [2023-11-29 20:30:21,403 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 182.57142857142858) internal successors, (3834), 21 states have internal predecessors, (3834), 0 states have call successors, (0), 0 states 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 20:30:21,403 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 20:30:21,403 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:30:21,403 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 20:30:21,403 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 20:30:21,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 20:30:21,404 INFO L85 PathProgramCache]: Analyzing trace with hash 566883483, now seen corresponding path program 6 times [2023-11-29 20:30:21,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 20:30:21,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545918992] [2023-11-29 20:30:21,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:30:21,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 20:30:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:30:22,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 20:30:22,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 20:30:22,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545918992] [2023-11-29 20:30:22,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545918992] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 20:30:22,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 20:30:22,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-11-29 20:30:22,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166890530] [2023-11-29 20:30:22,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 20:30:22,116 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 20:30:22,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 20:30:22,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 20:30:22,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2023-11-29 20:30:22,118 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 262 [2023-11-29 20:30:22,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 678 places, 3516 transitions, 89867 flow. Second operand has 21 states, 21 states have (on average 182.57142857142858) internal successors, (3834), 21 states have internal predecessors, (3834), 0 states have call successors, (0), 0 states 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 20:30:22,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 20:30:22,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 262 [2023-11-29 20:30:22,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 20:30:59,388 INFO L124 PetriNetUnfolderBase]: 28660/87899 cut-off events. [2023-11-29 20:30:59,388 INFO L125 PetriNetUnfolderBase]: For 575911/599151 co-relation queries the response was YES. [2023-11-29 20:30:59,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 571752 conditions, 87899 events. 28660/87899 cut-off events. For 575911/599151 co-relation queries the response was YES. Maximal size of possible extension queue 2582. Compared 1224047 event pairs, 2099 based on Foata normal form. 111/81582 useless extension candidates. Maximal degree in co-relation 169901. Up to 22583 conditions per place. [2023-11-29 20:31:00,477 INFO L140 encePairwiseOnDemand]: 228/262 looper letters, 2477 selfloop transitions, 192 changer transitions 462/3522 dead transitions. [2023-11-29 20:31:00,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 699 places, 3522 transitions, 95674 flow [2023-11-29 20:31:00,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 20:31:00,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-29 20:31:00,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4168 transitions. [2023-11-29 20:31:00,479 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7231089521165857 [2023-11-29 20:31:00,479 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4168 transitions. [2023-11-29 20:31:00,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4168 transitions. [2023-11-29 20:31:00,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 20:31:00,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4168 transitions. [2023-11-29 20:31:00,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 189.45454545454547) internal successors, (4168), 22 states have internal predecessors, (4168), 0 states have call successors, (0), 0 states 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 20:31:00,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 262.0) internal successors, (6026), 23 states have internal predecessors, (6026), 0 states have call successors, (0), 0 states 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 20:31:00,486 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 262.0) internal successors, (6026), 23 states have internal predecessors, (6026), 0 states have call successors, (0), 0 states 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 20:31:00,487 INFO L307 CegarLoopForPetriNet]: 237 programPoint places, 462 predicate places. [2023-11-29 20:31:00,487 INFO L500 AbstractCegarLoop]: Abstraction has has 699 places, 3522 transitions, 95674 flow [2023-11-29 20:31:00,487 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 182.57142857142858) internal successors, (3834), 21 states have internal predecessors, (3834), 0 states have call successors, (0), 0 states 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 20:31:00,487 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 20:31:00,487 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:31:00,488 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 20:31:00,488 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 20:31:00,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 20:31:00,488 INFO L85 PathProgramCache]: Analyzing trace with hash 357678919, now seen corresponding path program 7 times [2023-11-29 20:31:00,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 20:31:00,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594138311] [2023-11-29 20:31:00,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:31:00,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 20:31:00,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:31:01,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 20:31:01,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 20:31:01,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594138311] [2023-11-29 20:31:01,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594138311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 20:31:01,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 20:31:01,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-11-29 20:31:01,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780584110] [2023-11-29 20:31:01,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 20:31:01,074 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 20:31:01,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 20:31:01,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 20:31:01,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2023-11-29 20:31:01,076 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 262 [2023-11-29 20:31:01,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 699 places, 3522 transitions, 95674 flow. Second operand has 19 states, 19 states have (on average 182.8421052631579) internal successors, (3474), 19 states have internal predecessors, (3474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 20:31:01,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 20:31:01,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 262 [2023-11-29 20:31:01,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 20:31:42,042 INFO L124 PetriNetUnfolderBase]: 28224/87658 cut-off events. [2023-11-29 20:31:42,042 INFO L125 PetriNetUnfolderBase]: For 594632/615107 co-relation queries the response was YES. [2023-11-29 20:31:42,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612859 conditions, 87658 events. 28224/87658 cut-off events. For 594632/615107 co-relation queries the response was YES. Maximal size of possible extension queue 2544. Compared 1226000 event pairs, 1405 based on Foata normal form. 117/81389 useless extension candidates. Maximal degree in co-relation 183125. Up to 22606 conditions per place. [2023-11-29 20:31:43,138 INFO L140 encePairwiseOnDemand]: 228/262 looper letters, 2425 selfloop transitions, 176 changer transitions 462/3454 dead transitions. [2023-11-29 20:31:43,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 717 places, 3454 transitions, 99474 flow [2023-11-29 20:31:43,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 20:31:43,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-29 20:31:43,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4147 transitions. [2023-11-29 20:31:43,142 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7194656488549618 [2023-11-29 20:31:43,142 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4147 transitions. [2023-11-29 20:31:43,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4147 transitions. [2023-11-29 20:31:43,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 20:31:43,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4147 transitions. [2023-11-29 20:31:43,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 188.5) internal successors, (4147), 22 states have internal predecessors, (4147), 0 states have call successors, (0), 0 states 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 20:31:43,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 262.0) internal successors, (6026), 23 states have internal predecessors, (6026), 0 states have call successors, (0), 0 states 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 20:31:43,148 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 262.0) internal successors, (6026), 23 states have internal predecessors, (6026), 0 states have call successors, (0), 0 states 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 20:31:43,149 INFO L307 CegarLoopForPetriNet]: 237 programPoint places, 480 predicate places. [2023-11-29 20:31:43,149 INFO L500 AbstractCegarLoop]: Abstraction has has 717 places, 3454 transitions, 99474 flow [2023-11-29 20:31:43,149 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 182.8421052631579) internal successors, (3474), 19 states have internal predecessors, (3474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 20:31:43,150 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 20:31:43,150 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:31:43,150 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 20:31:43,150 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 20:31:43,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 20:31:43,150 INFO L85 PathProgramCache]: Analyzing trace with hash 700831117, now seen corresponding path program 8 times [2023-11-29 20:31:43,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 20:31:43,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970087788] [2023-11-29 20:31:43,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:31:43,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 20:31:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:31:43,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 20:31:43,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 20:31:43,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970087788] [2023-11-29 20:31:43,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970087788] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 20:31:43,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78298986] [2023-11-29 20:31:43,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 20:31:43,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 20:31:43,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 20:31:43,744 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 20:31:43,745 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 20:31:43,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 20:31:43,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 20:31:43,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-29 20:31:43,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 20:31:44,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 20:31:44,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 20:31:44,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 20:31:44,550 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 20:31:44,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2023-11-29 20:31:44,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 20:31:44,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 20:31:44,801 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 20:31:44,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78298986] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 20:31:44,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 20:31:44,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [20, 24] total 47 [2023-11-29 20:31:44,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896201421] [2023-11-29 20:31:44,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 20:31:44,802 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 20:31:44,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 20:31:44,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 20:31:44,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1952, Unknown=0, NotChecked=0, Total=2162 [2023-11-29 20:31:44,804 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 262 [2023-11-29 20:31:44,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 717 places, 3454 transitions, 99474 flow. Second operand has 9 states, 9 states have (on average 203.88888888888889) internal successors, (1835), 9 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states 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 20:31:44,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 20:31:44,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 262 [2023-11-29 20:31:44,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 20:32:44,127 INFO L124 PetriNetUnfolderBase]: 41829/129400 cut-off events. [2023-11-29 20:32:44,127 INFO L125 PetriNetUnfolderBase]: For 896515/941588 co-relation queries the response was YES. [2023-11-29 20:32:44,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 962139 conditions, 129400 events. 41829/129400 cut-off events. For 896515/941588 co-relation queries the response was YES. Maximal size of possible extension queue 3926. Compared 1905425 event pairs, 2084 based on Foata normal form. 388/120764 useless extension candidates. Maximal degree in co-relation 289853. Up to 37294 conditions per place. [2023-11-29 20:32:45,916 INFO L140 encePairwiseOnDemand]: 245/262 looper letters, 3809 selfloop transitions, 470 changer transitions 527/5221 dead transitions. [2023-11-29 20:32:45,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 730 places, 5221 transitions, 160250 flow [2023-11-29 20:32:45,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 20:32:45,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 20:32:45,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3014 transitions. [2023-11-29 20:32:45,918 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.821701199563795 [2023-11-29 20:32:45,919 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3014 transitions. [2023-11-29 20:32:45,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3014 transitions. [2023-11-29 20:32:45,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 20:32:45,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3014 transitions. [2023-11-29 20:32:45,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 215.28571428571428) internal successors, (3014), 14 states have internal predecessors, (3014), 0 states have call successors, (0), 0 states 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 20:32:45,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 262.0) internal successors, (3930), 15 states have internal predecessors, (3930), 0 states have call successors, (0), 0 states 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 20:32:45,925 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 262.0) internal successors, (3930), 15 states have internal predecessors, (3930), 0 states have call successors, (0), 0 states 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 20:32:45,925 INFO L307 CegarLoopForPetriNet]: 237 programPoint places, 493 predicate places. [2023-11-29 20:32:45,925 INFO L500 AbstractCegarLoop]: Abstraction has has 730 places, 5221 transitions, 160250 flow [2023-11-29 20:32:45,925 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 203.88888888888889) internal successors, (1835), 9 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states 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 20:32:45,925 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 20:32:45,926 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:32:45,936 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 20:32:46,131 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,SelfDestructingSolverStorable21 [2023-11-29 20:32:46,131 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 20:32:46,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 20:32:46,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1572209393, now seen corresponding path program 2 times [2023-11-29 20:32:46,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 20:32:46,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984918033] [2023-11-29 20:32:46,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:32:46,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 20:32:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:32:46,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 20:32:46,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 20:32:46,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984918033] [2023-11-29 20:32:46,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984918033] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 20:32:46,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 20:32:46,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-11-29 20:32:46,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396551203] [2023-11-29 20:32:46,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 20:32:46,695 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 20:32:46,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 20:32:46,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 20:32:46,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2023-11-29 20:32:46,698 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 262 [2023-11-29 20:32:46,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 730 places, 5221 transitions, 160250 flow. Second operand has 21 states, 21 states have (on average 182.57142857142858) internal successors, (3834), 21 states have internal predecessors, (3834), 0 states have call successors, (0), 0 states 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 20:32:46,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 20:32:46,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 262 [2023-11-29 20:32:46,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 20:34:14,506 INFO L124 PetriNetUnfolderBase]: 41886/131683 cut-off events. [2023-11-29 20:34:14,506 INFO L125 PetriNetUnfolderBase]: For 959908/999971 co-relation queries the response was YES. [2023-11-29 20:34:15,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1035753 conditions, 131683 events. 41886/131683 cut-off events. For 959908/999971 co-relation queries the response was YES. Maximal size of possible extension queue 3979. Compared 1959187 event pairs, 2272 based on Foata normal form. 268/122781 useless extension candidates. Maximal degree in co-relation 313004. Up to 37454 conditions per place. [2023-11-29 20:34:16,441 INFO L140 encePairwiseOnDemand]: 229/262 looper letters, 3965 selfloop transitions, 410 changer transitions 527/5293 dead transitions. [2023-11-29 20:34:16,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 754 places, 5293 transitions, 171345 flow [2023-11-29 20:34:16,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 20:34:16,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-29 20:34:16,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 4729 transitions. [2023-11-29 20:34:16,444 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7219847328244274 [2023-11-29 20:34:16,444 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 4729 transitions. [2023-11-29 20:34:16,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 4729 transitions. [2023-11-29 20:34:16,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 20:34:16,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 4729 transitions. [2023-11-29 20:34:16,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 189.16) internal successors, (4729), 25 states have internal predecessors, (4729), 0 states have call successors, (0), 0 states 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 20:34:16,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 262.0) internal successors, (6812), 26 states have internal predecessors, (6812), 0 states have call successors, (0), 0 states 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 20:34:16,451 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 262.0) internal successors, (6812), 26 states have internal predecessors, (6812), 0 states have call successors, (0), 0 states 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 20:34:16,452 INFO L307 CegarLoopForPetriNet]: 237 programPoint places, 517 predicate places. [2023-11-29 20:34:16,452 INFO L500 AbstractCegarLoop]: Abstraction has has 754 places, 5293 transitions, 171345 flow [2023-11-29 20:34:16,452 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 182.57142857142858) internal successors, (3834), 21 states have internal predecessors, (3834), 0 states have call successors, (0), 0 states 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 20:34:16,452 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 20:34:16,452 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:34:16,452 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 20:34:16,453 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 20:34:16,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 20:34:16,453 INFO L85 PathProgramCache]: Analyzing trace with hash -912775341, now seen corresponding path program 3 times [2023-11-29 20:34:16,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 20:34:16,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939108882] [2023-11-29 20:34:16,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:34:16,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 20:34:16,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:34:16,997 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 20:34:16,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 20:34:16,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939108882] [2023-11-29 20:34:16,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939108882] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 20:34:16,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 20:34:16,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-11-29 20:34:16,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379261204] [2023-11-29 20:34:16,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 20:34:16,998 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 20:34:16,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 20:34:16,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 20:34:16,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2023-11-29 20:34:17,000 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 262 [2023-11-29 20:34:17,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 754 places, 5293 transitions, 171345 flow. Second operand has 20 states, 20 states have (on average 182.7) internal successors, (3654), 20 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:34:17,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 20:34:17,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 262 [2023-11-29 20:34:17,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 20:36:33,434 INFO L124 PetriNetUnfolderBase]: 45971/143828 cut-off events. [2023-11-29 20:36:33,435 INFO L125 PetriNetUnfolderBase]: For 1190329/1243891 co-relation queries the response was YES. [2023-11-29 20:36:34,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1209409 conditions, 143828 events. 45971/143828 cut-off events. For 1190329/1243891 co-relation queries the response was YES. Maximal size of possible extension queue 4338. Compared 2160368 event pairs, 2436 based on Foata normal form. 240/134175 useless extension candidates. Maximal degree in co-relation 365742. Up to 42950 conditions per place. [2023-11-29 20:36:35,669 INFO L140 encePairwiseOnDemand]: 230/262 looper letters, 4474 selfloop transitions, 369 changer transitions 527/5761 dead transitions. [2023-11-29 20:36:35,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 785 places, 5761 transitions, 196702 flow [2023-11-29 20:36:35,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-29 20:36:35,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-11-29 20:36:35,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 6083 transitions. [2023-11-29 20:36:35,674 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7255486641221374 [2023-11-29 20:36:35,674 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 6083 transitions. [2023-11-29 20:36:35,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 6083 transitions. [2023-11-29 20:36:35,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 20:36:35,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 6083 transitions. [2023-11-29 20:36:35,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 190.09375) internal successors, (6083), 32 states have internal predecessors, (6083), 0 states have call successors, (0), 0 states 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 20:36:35,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 262.0) internal successors, (8646), 33 states have internal predecessors, (8646), 0 states have call successors, (0), 0 states 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 20:36:35,685 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 262.0) internal successors, (8646), 33 states have internal predecessors, (8646), 0 states have call successors, (0), 0 states 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 20:36:35,686 INFO L307 CegarLoopForPetriNet]: 237 programPoint places, 548 predicate places. [2023-11-29 20:36:35,686 INFO L500 AbstractCegarLoop]: Abstraction has has 785 places, 5761 transitions, 196702 flow [2023-11-29 20:36:35,686 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 182.7) internal successors, (3654), 20 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:36:35,686 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 20:36:35,687 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:36:35,687 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 20:36:35,687 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 20:36:35,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 20:36:35,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1952433769, now seen corresponding path program 9 times [2023-11-29 20:36:35,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 20:36:35,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898867808] [2023-11-29 20:36:35,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:36:35,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 20:36:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:36:36,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 20:36:36,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 20:36:36,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898867808] [2023-11-29 20:36:36,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898867808] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 20:36:36,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 20:36:36,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-11-29 20:36:36,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79111923] [2023-11-29 20:36:36,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 20:36:36,419 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 20:36:36,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 20:36:36,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 20:36:36,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2023-11-29 20:36:36,422 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 262 [2023-11-29 20:36:36,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 785 places, 5761 transitions, 196702 flow. Second operand has 21 states, 21 states have (on average 182.57142857142858) internal successors, (3834), 21 states have internal predecessors, (3834), 0 states have call successors, (0), 0 states 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 20:36:36,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 20:36:36,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 262 [2023-11-29 20:36:36,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 20:38:42,675 INFO L124 PetriNetUnfolderBase]: 47578/150105 cut-off events. [2023-11-29 20:38:42,675 INFO L125 PetriNetUnfolderBase]: For 1294329/1343622 co-relation queries the response was YES. [2023-11-29 20:38:43,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1324797 conditions, 150105 events. 47578/150105 cut-off events. For 1294329/1343622 co-relation queries the response was YES. Maximal size of possible extension queue 4539. Compared 2277780 event pairs, 2434 based on Foata normal form. 361/140032 useless extension candidates. Maximal degree in co-relation 401753. Up to 43839 conditions per place. [2023-11-29 20:38:45,119 INFO L140 encePairwiseOnDemand]: 230/262 looper letters, 4634 selfloop transitions, 427 changer transitions 527/5979 dead transitions. [2023-11-29 20:38:45,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 811 places, 5979 transitions, 213906 flow [2023-11-29 20:38:45,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-29 20:38:45,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-29 20:38:45,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 5111 transitions. [2023-11-29 20:38:45,122 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7225049476957874 [2023-11-29 20:38:45,122 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 5111 transitions. [2023-11-29 20:38:45,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 5111 transitions. [2023-11-29 20:38:45,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 20:38:45,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 5111 transitions. [2023-11-29 20:38:45,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 189.2962962962963) internal successors, (5111), 27 states have internal predecessors, (5111), 0 states have call successors, (0), 0 states 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 20:38:45,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 262.0) internal successors, (7336), 28 states have internal predecessors, (7336), 0 states have call successors, (0), 0 states 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 20:38:45,131 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 262.0) internal successors, (7336), 28 states have internal predecessors, (7336), 0 states have call successors, (0), 0 states 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 20:38:45,131 INFO L307 CegarLoopForPetriNet]: 237 programPoint places, 574 predicate places. [2023-11-29 20:38:45,131 INFO L500 AbstractCegarLoop]: Abstraction has has 811 places, 5979 transitions, 213906 flow [2023-11-29 20:38:45,132 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 182.57142857142858) internal successors, (3834), 21 states have internal predecessors, (3834), 0 states have call successors, (0), 0 states 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 20:38:45,132 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 20:38:45,132 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:38:45,132 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 20:38:45,132 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 20:38:45,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 20:38:45,133 INFO L85 PathProgramCache]: Analyzing trace with hash 131503385, now seen corresponding path program 10 times [2023-11-29 20:38:45,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 20:38:45,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694693542] [2023-11-29 20:38:45,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:38:45,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 20:38:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:38:45,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 20:38:45,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 20:38:45,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694693542] [2023-11-29 20:38:45,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694693542] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 20:38:45,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 20:38:45,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-11-29 20:38:45,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284358726] [2023-11-29 20:38:45,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 20:38:45,710 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 20:38:45,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 20:38:45,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 20:38:45,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2023-11-29 20:38:45,713 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 262 [2023-11-29 20:38:45,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 811 places, 5979 transitions, 213906 flow. Second operand has 20 states, 20 states have (on average 182.7) internal successors, (3654), 20 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 20:38:45,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 20:38:45,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 262 [2023-11-29 20:38:45,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-11-29 20:39:41,521 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 20:39:41,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 20:39:41,671 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-29 20:39:41,671 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 20:39:41,671 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (20states, 180/262 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 655243 conditions, 45594 events (23002/45593 cut-off events. For 518570/527885 co-relation queries the response was YES. Maximal size of possible extension queue 4649. Compared 540802 event pairs, 885 based on Foata normal form. 175/47020 useless extension candidates. Maximal degree in co-relation 328378. Up to 22214 conditions per place.). [2023-11-29 20:39:41,672 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-29 20:39:41,673 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-29 20:39:41,673 INFO L457 BasicCegarLoop]: Path program histogram: [10, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 20:39:41,675 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 20:39:41,676 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 20:39:41,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:39:41 BasicIcfg [2023-11-29 20:39:41,678 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 20:39:41,679 INFO L158 Benchmark]: Toolchain (without parser) took 740963.23ms. Allocated memory was 360.7MB in the beginning and 14.4GB in the end (delta: 14.0GB). Free memory was 311.7MB in the beginning and 7.9GB in the end (delta: -7.6GB). Peak memory consumption was 7.2GB. Max. memory is 16.0GB. [2023-11-29 20:39:41,679 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 360.7MB. Free memory is still 310.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-29 20:39:41,679 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.29ms. Allocated memory is still 360.7MB. Free memory was 311.2MB in the beginning and 299.6MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-11-29 20:39:41,679 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.99ms. Allocated memory is still 360.7MB. Free memory was 299.6MB in the beginning and 297.0MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-11-29 20:39:41,680 INFO L158 Benchmark]: Boogie Preprocessor took 31.43ms. Allocated memory is still 360.7MB. Free memory was 297.0MB in the beginning and 295.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. [2023-11-29 20:39:41,680 INFO L158 Benchmark]: RCFGBuilder took 499.19ms. Allocated memory is still 360.7MB. Free memory was 295.4MB in the beginning and 273.9MB in the end (delta: 21.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-11-29 20:39:41,680 INFO L158 Benchmark]: TraceAbstraction took 740178.55ms. Allocated memory was 360.7MB in the beginning and 14.4GB in the end (delta: 14.0GB). Free memory was 273.0MB in the beginning and 7.9GB in the end (delta: -7.7GB). Peak memory consumption was 7.1GB. Max. memory is 16.0GB. [2023-11-29 20:39:41,681 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 360.7MB. Free memory is still 310.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 214.29ms. Allocated memory is still 360.7MB. Free memory was 311.2MB in the beginning and 299.6MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 34.99ms. Allocated memory is still 360.7MB. Free memory was 299.6MB in the beginning and 297.0MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.43ms. Allocated memory is still 360.7MB. Free memory was 297.0MB in the beginning and 295.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 499.19ms. Allocated memory is still 360.7MB. Free memory was 295.4MB in the beginning and 273.9MB in the end (delta: 21.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 740178.55ms. Allocated memory was 360.7MB in the beginning and 14.4GB in the end (delta: 14.0GB). Free memory was 273.0MB in the beginning and 7.9GB in the end (delta: -7.7GB). Peak memory consumption was 7.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (20states, 180/262 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 655243 conditions, 45594 events (23002/45593 cut-off events. For 518570/527885 co-relation queries the response was YES. Maximal size of possible extension queue 4649. Compared 540802 event pairs, 885 based on Foata normal form. 175/47020 useless extension candidates. Maximal degree in co-relation 328378. Up to 22214 conditions per place.). - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (20states, 180/262 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 655243 conditions, 45594 events (23002/45593 cut-off events. For 518570/527885 co-relation queries the response was YES. Maximal size of possible extension queue 4649. Compared 540802 event pairs, 885 based on Foata normal form. 175/47020 useless extension candidates. Maximal degree in co-relation 328378. Up to 22214 conditions per place.). - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (20states, 180/262 universal loopers) in iteration 26,while PetriNetUnfolder was constructing finite prefix that currently has 655243 conditions, 45594 events (23002/45593 cut-off events. For 518570/527885 co-relation queries the response was YES. Maximal size of possible extension queue 4649. Compared 540802 event pairs, 885 based on Foata normal form. 175/47020 useless extension candidates. Maximal degree in co-relation 328378. Up to 22214 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 338 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 740.0s, OverallIterations: 26, TraceHistogramMax: 2, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 715.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9315 SdHoareTripleChecker+Valid, 10.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9315 mSDsluCounter, 19565 SdHoareTripleChecker+Invalid, 8.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17465 mSDsCounter, 322 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22762 IncrementalHoareTripleChecker+Invalid, 23084 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 322 mSolverCounterUnsat, 2100 mSDtfsCounter, 22762 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3862 GetRequests, 2790 SyntacticMatches, 4 SemanticMatches, 1068 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12207 ImplicationChecksByTransitivity, 14.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=213906occurred in iteration=25, InterpolantAutomatonStates: 610, 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, 20.2s InterpolantComputationTime, 6002 NumberOfCodeBlocks, 5952 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 7255 ConstructedInterpolants, 34 QuantifiedInterpolants, 33833 SizeOfPredicates, 154 NumberOfNonLiveVariables, 3379 ConjunctsInSsa, 266 ConjunctsInUnsatCore, 44 InterpolantComputations, 23 PerfectInterpolantSequences, 79/120 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