/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-29 23:09:01,549 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 23:09:01,621 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 23:09:01,649 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 23:09:01,650 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 23:09:01,650 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 23:09:01,650 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 23:09:01,651 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 23:09:01,651 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 23:09:01,654 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 23:09:01,654 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 23:09:01,654 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 23:09:01,654 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 23:09:01,655 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 23:09:01,655 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 23:09:01,655 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 23:09:01,655 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 23:09:01,656 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 23:09:01,656 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 23:09:01,656 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 23:09:01,656 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 23:09:01,657 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 23:09:01,657 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 23:09:01,657 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-29 23:09:01,657 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 23:09:01,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 23:09:01,658 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 23:09:01,658 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 23:09:01,658 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 23:09:01,659 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 23:09:01,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 23:09:01,659 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 23:09:01,659 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 23:09:01,660 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-11-29 23:09:01,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 23:09:01,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 23:09:01,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 23:09:01,841 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 23:09:01,841 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 23:09:01,842 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c [2023-11-29 23:09:02,835 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 23:09:03,001 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 23:09:03,001 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c [2023-11-29 23:09:03,009 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0ab4b8ef/29264452ee154a4d9d0c96a77fcb09c4/FLAG4080298a3 [2023-11-29 23:09:03,019 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0ab4b8ef/29264452ee154a4d9d0c96a77fcb09c4 [2023-11-29 23:09:03,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 23:09:03,022 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-29 23:09:03,023 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 23:09:03,024 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 23:09:03,027 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 23:09:03,027 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:09:03" (1/1) ... [2023-11-29 23:09:03,028 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39ae8f76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:09:03, skipping insertion in model container [2023-11-29 23:09:03,029 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:09:03" (1/1) ... [2023-11-29 23:09:03,047 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 23:09:03,150 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c[2676,2689] [2023-11-29 23:09:03,161 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 23:09:03,170 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 23:09:03,227 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c[2676,2689] [2023-11-29 23:09:03,229 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 23:09:03,236 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 23:09:03,237 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 23:09:03,243 INFO L206 MainTranslator]: Completed translation [2023-11-29 23:09:03,243 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:09:03 WrapperNode [2023-11-29 23:09:03,243 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 23:09:03,244 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 23:09:03,244 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 23:09:03,245 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 23:09:03,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:09:03" (1/1) ... [2023-11-29 23:09:03,258 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:09:03" (1/1) ... [2023-11-29 23:09:03,280 INFO L138 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 149 [2023-11-29 23:09:03,280 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 23:09:03,281 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 23:09:03,281 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 23:09:03,281 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 23:09:03,289 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:09:03" (1/1) ... [2023-11-29 23:09:03,289 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:09:03" (1/1) ... [2023-11-29 23:09:03,292 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:09:03" (1/1) ... [2023-11-29 23:09:03,292 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:09:03" (1/1) ... [2023-11-29 23:09:03,298 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:09:03" (1/1) ... [2023-11-29 23:09:03,301 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:09:03" (1/1) ... [2023-11-29 23:09:03,303 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:09:03" (1/1) ... [2023-11-29 23:09:03,304 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:09:03" (1/1) ... [2023-11-29 23:09:03,306 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 23:09:03,307 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 23:09:03,307 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 23:09:03,307 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 23:09:03,308 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:09:03" (1/1) ... [2023-11-29 23:09:03,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 23:09:03,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:09:03,342 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 23:09:03,349 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 23:09:03,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 23:09:03,372 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 23:09:03,372 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 23:09:03,372 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 23:09:03,372 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 23:09:03,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 23:09:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 23:09:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 23:09:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 23:09:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 23:09:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 23:09:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 23:09:03,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 23:09:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 23:09:03,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 23:09:03,375 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 23:09:03,461 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 23:09:03,463 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 23:09:03,667 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 23:09:03,737 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 23:09:03,737 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 23:09:03,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:09:03 BoogieIcfgContainer [2023-11-29 23:09:03,739 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 23:09:03,741 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 23:09:03,741 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 23:09:03,744 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 23:09:03,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:09:03" (1/3) ... [2023-11-29 23:09:03,744 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65dcbfa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:09:03, skipping insertion in model container [2023-11-29 23:09:03,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:09:03" (2/3) ... [2023-11-29 23:09:03,745 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65dcbfa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:09:03, skipping insertion in model container [2023-11-29 23:09:03,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:09:03" (3/3) ... [2023-11-29 23:09:03,746 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-send-receive-alt.wvr.c [2023-11-29 23:09:03,761 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 23:09:03,761 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 23:09:03,762 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 23:09:03,812 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 23:09:03,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 137 transitions, 288 flow [2023-11-29 23:09:03,902 INFO L124 PetriNetUnfolderBase]: 11/135 cut-off events. [2023-11-29 23:09:03,902 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 23:09:03,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 135 events. 11/135 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 96 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2023-11-29 23:09:03,907 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 137 transitions, 288 flow [2023-11-29 23:09:03,912 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 126 transitions, 264 flow [2023-11-29 23:09:03,920 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 23:09:03,952 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;@3c7bdf42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 23:09:03,953 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-29 23:09:03,992 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 23:09:03,992 INFO L124 PetriNetUnfolderBase]: 11/125 cut-off events. [2023-11-29 23:09:03,993 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 23:09:03,993 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:09:03,993 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] [2023-11-29 23:09:03,994 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 23:09:03,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:09:03,997 INFO L85 PathProgramCache]: Analyzing trace with hash -593398031, now seen corresponding path program 1 times [2023-11-29 23:09:04,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:09:04,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771862176] [2023-11-29 23:09:04,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:09:04,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:09:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:09:04,238 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 23:09:04,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:09:04,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771862176] [2023-11-29 23:09:04,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771862176] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:09:04,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:09:04,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 23:09:04,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265476123] [2023-11-29 23:09:04,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:09:04,249 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 23:09:04,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:09:04,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 23:09:04,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 23:09:04,276 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 137 [2023-11-29 23:09:04,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 126 transitions, 264 flow. Second operand has 2 states, 2 states have (on average 125.0) internal successors, (250), 2 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:04,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:09:04,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 137 [2023-11-29 23:09:04,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:09:04,340 INFO L124 PetriNetUnfolderBase]: 12/146 cut-off events. [2023-11-29 23:09:04,340 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-11-29 23:09:04,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 146 events. 12/146 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 178 event pairs, 2 based on Foata normal form. 14/146 useless extension candidates. Maximal degree in co-relation 85. Up to 19 conditions per place. [2023-11-29 23:09:04,343 INFO L140 encePairwiseOnDemand]: 130/137 looper letters, 7 selfloop transitions, 0 changer transitions 3/119 dead transitions. [2023-11-29 23:09:04,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 119 transitions, 264 flow [2023-11-29 23:09:04,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 23:09:04,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-29 23:09:04,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 258 transitions. [2023-11-29 23:09:04,357 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.9416058394160584 [2023-11-29 23:09:04,358 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 258 transitions. [2023-11-29 23:09:04,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 258 transitions. [2023-11-29 23:09:04,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:09:04,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 258 transitions. [2023-11-29 23:09:04,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 129.0) internal successors, (258), 2 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:04,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:04,372 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:04,375 INFO L307 CegarLoopForPetriNet]: 122 programPoint places, 1 predicate places. [2023-11-29 23:09:04,376 INFO L500 AbstractCegarLoop]: Abstraction has has 123 places, 119 transitions, 264 flow [2023-11-29 23:09:04,376 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 125.0) internal successors, (250), 2 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:04,376 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:09:04,376 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] [2023-11-29 23:09:04,377 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 23:09:04,377 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 23:09:04,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:09:04,378 INFO L85 PathProgramCache]: Analyzing trace with hash -23216541, now seen corresponding path program 1 times [2023-11-29 23:09:04,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:09:04,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140274158] [2023-11-29 23:09:04,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:09:04,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:09:04,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:09:04,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:09:04,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:09:04,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140274158] [2023-11-29 23:09:04,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140274158] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:09:04,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:09:04,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 23:09:04,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930055762] [2023-11-29 23:09:04,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:09:04,751 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 23:09:04,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:09:04,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 23:09:04,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 23:09:04,754 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 137 [2023-11-29 23:09:04,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 119 transitions, 264 flow. Second operand has 5 states, 5 states have (on average 104.6) internal successors, (523), 5 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:04,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:09:04,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 137 [2023-11-29 23:09:04,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:09:04,865 INFO L124 PetriNetUnfolderBase]: 14/175 cut-off events. [2023-11-29 23:09:04,865 INFO L125 PetriNetUnfolderBase]: For 49/59 co-relation queries the response was YES. [2023-11-29 23:09:04,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 175 events. 14/175 cut-off events. For 49/59 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 338 event pairs, 2 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 112. Up to 24 conditions per place. [2023-11-29 23:09:04,868 INFO L140 encePairwiseOnDemand]: 129/137 looper letters, 29 selfloop transitions, 2 changer transitions 8/129 dead transitions. [2023-11-29 23:09:04,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 129 transitions, 383 flow [2023-11-29 23:09:04,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 23:09:04,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 23:09:04,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 740 transitions. [2023-11-29 23:09:04,873 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7716371220020855 [2023-11-29 23:09:04,873 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 740 transitions. [2023-11-29 23:09:04,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 740 transitions. [2023-11-29 23:09:04,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:09:04,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 740 transitions. [2023-11-29 23:09:04,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 105.71428571428571) internal successors, (740), 7 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:04,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 137.0) internal successors, (1096), 8 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:04,880 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 137.0) internal successors, (1096), 8 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:04,881 INFO L307 CegarLoopForPetriNet]: 122 programPoint places, 7 predicate places. [2023-11-29 23:09:04,881 INFO L500 AbstractCegarLoop]: Abstraction has has 129 places, 129 transitions, 383 flow [2023-11-29 23:09:04,882 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.6) internal successors, (523), 5 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:04,882 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:09:04,882 INFO L232 CegarLoopForPetriNet]: trace histogram [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] [2023-11-29 23:09:04,882 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 23:09:04,883 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 23:09:04,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:09:04,884 INFO L85 PathProgramCache]: Analyzing trace with hash 134992086, now seen corresponding path program 1 times [2023-11-29 23:09:04,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:09:04,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564466333] [2023-11-29 23:09:04,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:09:04,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:09:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:09:04,999 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 23:09:05,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:09:05,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564466333] [2023-11-29 23:09:05,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564466333] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:09:05,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:09:05,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 23:09:05,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610310348] [2023-11-29 23:09:05,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:09:05,001 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 23:09:05,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:09:05,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 23:09:05,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 23:09:05,002 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 137 [2023-11-29 23:09:05,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 129 transitions, 383 flow. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:05,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:09:05,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 137 [2023-11-29 23:09:05,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:09:05,050 INFO L124 PetriNetUnfolderBase]: 18/205 cut-off events. [2023-11-29 23:09:05,050 INFO L125 PetriNetUnfolderBase]: For 134/142 co-relation queries the response was YES. [2023-11-29 23:09:05,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345 conditions, 205 events. 18/205 cut-off events. For 134/142 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 404 event pairs, 3 based on Foata normal form. 3/192 useless extension candidates. Maximal degree in co-relation 188. Up to 30 conditions per place. [2023-11-29 23:09:05,053 INFO L140 encePairwiseOnDemand]: 133/137 looper letters, 15 selfloop transitions, 3 changer transitions 11/133 dead transitions. [2023-11-29 23:09:05,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 133 transitions, 450 flow [2023-11-29 23:09:05,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 23:09:05,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 23:09:05,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2023-11-29 23:09:05,055 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8978102189781022 [2023-11-29 23:09:05,055 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2023-11-29 23:09:05,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2023-11-29 23:09:05,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:09:05,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2023-11-29 23:09:05,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:05,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:05,057 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:05,058 INFO L307 CegarLoopForPetriNet]: 122 programPoint places, 9 predicate places. [2023-11-29 23:09:05,058 INFO L500 AbstractCegarLoop]: Abstraction has has 131 places, 133 transitions, 450 flow [2023-11-29 23:09:05,059 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:05,059 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:09:05,059 INFO L232 CegarLoopForPetriNet]: trace histogram [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] [2023-11-29 23:09:05,059 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 23:09:05,059 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 23:09:05,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:09:05,060 INFO L85 PathProgramCache]: Analyzing trace with hash 905774723, now seen corresponding path program 1 times [2023-11-29 23:09:05,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:09:05,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810800360] [2023-11-29 23:09:05,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:09:05,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:09:05,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:09:05,214 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:09:05,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:09:05,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810800360] [2023-11-29 23:09:05,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810800360] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:09:05,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:09:05,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 23:09:05,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911871758] [2023-11-29 23:09:05,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:09:05,219 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 23:09:05,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:09:05,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 23:09:05,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 23:09:05,221 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 137 [2023-11-29 23:09:05,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 133 transitions, 450 flow. Second operand has 6 states, 6 states have (on average 107.33333333333333) internal successors, (644), 6 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:05,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:09:05,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 137 [2023-11-29 23:09:05,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:09:05,353 INFO L124 PetriNetUnfolderBase]: 27/322 cut-off events. [2023-11-29 23:09:05,353 INFO L125 PetriNetUnfolderBase]: For 333/349 co-relation queries the response was YES. [2023-11-29 23:09:05,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 611 conditions, 322 events. 27/322 cut-off events. For 333/349 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1048 event pairs, 4 based on Foata normal form. 2/297 useless extension candidates. Maximal degree in co-relation 216. Up to 45 conditions per place. [2023-11-29 23:09:05,356 INFO L140 encePairwiseOnDemand]: 126/137 looper letters, 27 selfloop transitions, 8 changer transitions 27/153 dead transitions. [2023-11-29 23:09:05,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 153 transitions, 682 flow [2023-11-29 23:09:05,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 23:09:05,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 23:09:05,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 977 transitions. [2023-11-29 23:09:05,358 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7923763179237632 [2023-11-29 23:09:05,358 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 977 transitions. [2023-11-29 23:09:05,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 977 transitions. [2023-11-29 23:09:05,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:09:05,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 977 transitions. [2023-11-29 23:09:05,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 108.55555555555556) internal successors, (977), 9 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:05,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:05,363 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:05,364 INFO L307 CegarLoopForPetriNet]: 122 programPoint places, 17 predicate places. [2023-11-29 23:09:05,364 INFO L500 AbstractCegarLoop]: Abstraction has has 139 places, 153 transitions, 682 flow [2023-11-29 23:09:05,365 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.33333333333333) internal successors, (644), 6 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:05,365 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:09:05,365 INFO L232 CegarLoopForPetriNet]: trace histogram [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] [2023-11-29 23:09:05,365 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 23:09:05,365 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 23:09:05,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:09:05,366 INFO L85 PathProgramCache]: Analyzing trace with hash 965776516, now seen corresponding path program 1 times [2023-11-29 23:09:05,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:09:05,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997317462] [2023-11-29 23:09:05,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:09:05,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:09:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:09:06,227 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:09:06,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:09:06,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997317462] [2023-11-29 23:09:06,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997317462] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:09:06,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172046975] [2023-11-29 23:09:06,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:09:06,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:09:06,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:09:06,230 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 23:09:06,261 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 23:09:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:09:06,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-29 23:09:06,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:09:06,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 23:09:06,442 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-29 23:09:06,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2023-11-29 23:09:06,834 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 23:09:06,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-11-29 23:09:06,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-29 23:09:07,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 23:09:07,381 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 23:09:07,535 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:09:07,535 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:09:08,583 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:09:08,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 51 [2023-11-29 23:09:08,591 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:09:08,591 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 152 treesize of output 144 [2023-11-29 23:09:08,602 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:09:08,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 132 treesize of output 116 [2023-11-29 23:09:08,612 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:09:08,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 79 [2023-11-29 23:09:08,792 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:09:08,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 50 [2023-11-29 23:09:08,799 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 23:09:08,800 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 148 treesize of output 136 [2023-11-29 23:09:08,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 23:09:08,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 89 [2023-11-29 23:09:08,816 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 23:09:08,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 100 [2023-11-29 23:09:11,539 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:09:11,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172046975] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:09:11,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:09:11,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 23, 23] total 56 [2023-11-29 23:09:11,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623402556] [2023-11-29 23:09:11,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:09:11,541 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-11-29 23:09:11,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:09:11,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-11-29 23:09:11,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=605, Invalid=2445, Unknown=30, NotChecked=0, Total=3080 [2023-11-29 23:09:11,549 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 137 [2023-11-29 23:09:11,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 153 transitions, 682 flow. Second operand has 56 states, 56 states have (on average 55.94642857142857) internal successors, (3133), 56 states have internal predecessors, (3133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:11,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:09:11,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 137 [2023-11-29 23:09:11,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:09:13,430 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (<= c_~sum~0 0)) (.cse1 (<= 0 (+ c_~sum~0 1))) (.cse14 (* c_~front~0 4)) (.cse15 (* c_~back~0 4))) (let ((.cse2 (forall ((|v_ULTIMATE.start_create_fresh_int_array_#t~malloc18#1.base_8| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_#t~malloc18#1.base_8|) 0)) (< |c_#StackHeapBarrier| (+ |v_ULTIMATE.start_create_fresh_int_array_#t~malloc18#1.base_8| 1))))) (.cse5 (+ c_~queue~0.offset .cse15)) (.cse6 (+ c_~queue~0.offset .cse14)) (.cse3 (< c_~n~0 (+ c_~front~0 1))) (.cse9 (and .cse0 .cse1 (= c_~back~0 c_~front~0))) (.cse8 (< c_~front~0 0))) (and (or (and .cse0 (= c_~back~0 0) .cse1) (not (= c_~front~0 0)) .cse2) (= c_~sum~0 1) (or .cse3 (and (forall ((v_ArrVal_69 (Array Int Int))) (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_69) c_~queue~0.base))) (or (not (= (select .cse4 .cse5) 1)) (< (+ c_~sum~0 (select .cse4 .cse6)) 2)))) (forall ((v_ArrVal_69 (Array Int Int))) (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_69) c_~queue~0.base))) (or (not (= (select .cse7 .cse5) 1)) (< 0 (+ c_~sum~0 (select .cse7 .cse6) 1)))))) .cse8) (or .cse3 (< (+ |c_ULTIMATE.start_create_fresh_int_array_~i~0#1| 1) |c_ULTIMATE.start_create_fresh_int_array_~size#1|) .cse9 .cse8) (or .cse3 (let ((.cse11 (+ .cse15 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse12 (+ .cse14 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (forall ((v_ArrVal_68 (Array Int Int)) (v_ArrVal_69 (Array Int Int))) (let ((.cse10 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_68) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_69) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (or (not (= (select .cse10 .cse11) 1)) (< (+ c_~sum~0 (select .cse10 .cse12)) 2)))) (forall ((v_ArrVal_68 (Array Int Int)) (v_ArrVal_69 (Array Int Int))) (let ((.cse13 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_68) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_69) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (or (not (= (select .cse13 .cse11) 1)) (< 0 (+ c_~sum~0 (select .cse13 .cse12) 1))))))) .cse8) (or .cse3 (let ((.cse17 (+ .cse14 |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)) (.cse18 (+ .cse15 |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|))) (and (forall ((v_ArrVal_68 (Array Int Int)) (v_ArrVal_69 (Array Int Int))) (let ((.cse16 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_68) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_69) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|))) (or (< 0 (+ (select .cse16 .cse17) c_~sum~0 1)) (not (= (select .cse16 .cse18) 1))))) (forall ((v_ArrVal_68 (Array Int Int)) (v_ArrVal_69 (Array Int Int))) (let ((.cse19 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_68) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_69) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|))) (or (< (+ (select .cse19 .cse17) c_~sum~0) 2) (not (= (select .cse19 .cse18) 1))))))) .cse8) (or .cse3 .cse9 (< 1 |c_ULTIMATE.start_create_fresh_int_array_#in~size#1|) .cse2 .cse8) (or .cse3 .cse8 (and (forall ((v_ArrVal_68 (Array Int Int)) (v_ArrVal_69 (Array Int Int))) (let ((.cse20 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_68) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_69) c_~queue~0.base))) (or (< (+ c_~sum~0 (select .cse20 .cse6)) 2) (not (= (select .cse20 .cse5) 1))))) (forall ((v_ArrVal_68 (Array Int Int)) (v_ArrVal_69 (Array Int Int))) (let ((.cse21 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_68) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_69) c_~queue~0.base))) (or (< 0 (+ c_~sum~0 1 (select .cse21 .cse6))) (not (= (select .cse21 .cse5) 1))))))) (or .cse3 .cse8 (let ((.cse23 (+ .cse14 |c_ULTIMATE.start_main_#t~ret11#1.offset|)) (.cse24 (+ .cse15 |c_ULTIMATE.start_main_#t~ret11#1.offset|))) (and (forall ((v_ArrVal_68 (Array Int Int)) (v_ArrVal_69 (Array Int Int))) (let ((.cse22 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_68) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_69) |c_ULTIMATE.start_main_#t~ret11#1.base|))) (or (< (+ c_~sum~0 (select .cse22 .cse23)) 2) (not (= (select .cse22 .cse24) 1))))) (forall ((v_ArrVal_68 (Array Int Int)) (v_ArrVal_69 (Array Int Int))) (let ((.cse25 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_68) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_69) |c_ULTIMATE.start_main_#t~ret11#1.base|))) (or (< 0 (+ c_~sum~0 (select .cse25 .cse23) 1)) (not (= (select .cse25 .cse24) 1)))))))) (or .cse3 (let ((.cse26 (+ c_~sum~0 (select (select |c_#memory_int| c_~queue~0.base) .cse6)))) (and (<= .cse26 1) (<= 0 .cse26))) .cse8) (or .cse3 (< 1 |c_ULTIMATE.start_create_fresh_int_array_~size#1|) .cse9 .cse8)))) is different from false [2023-11-29 23:09:14,808 INFO L124 PetriNetUnfolderBase]: 218/1320 cut-off events. [2023-11-29 23:09:14,809 INFO L125 PetriNetUnfolderBase]: For 2452/2646 co-relation queries the response was YES. [2023-11-29 23:09:14,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3128 conditions, 1320 events. 218/1320 cut-off events. For 2452/2646 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 9393 event pairs, 13 based on Foata normal form. 26/1195 useless extension candidates. Maximal degree in co-relation 1475. Up to 281 conditions per place. [2023-11-29 23:09:14,814 INFO L140 encePairwiseOnDemand]: 101/137 looper letters, 116 selfloop transitions, 54 changer transitions 98/316 dead transitions. [2023-11-29 23:09:14,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 316 transitions, 2278 flow [2023-11-29 23:09:14,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-11-29 23:09:14,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2023-11-29 23:09:14,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 3641 transitions. [2023-11-29 23:09:14,821 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.41526003649635035 [2023-11-29 23:09:14,821 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 3641 transitions. [2023-11-29 23:09:14,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 3641 transitions. [2023-11-29 23:09:14,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:09:14,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 3641 transitions. [2023-11-29 23:09:14,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 56.890625) internal successors, (3641), 64 states have internal predecessors, (3641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:14,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 137.0) internal successors, (8905), 65 states have internal predecessors, (8905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:14,836 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 137.0) internal successors, (8905), 65 states have internal predecessors, (8905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:14,837 INFO L307 CegarLoopForPetriNet]: 122 programPoint places, 80 predicate places. [2023-11-29 23:09:14,837 INFO L500 AbstractCegarLoop]: Abstraction has has 202 places, 316 transitions, 2278 flow [2023-11-29 23:09:14,838 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 55.94642857142857) internal successors, (3133), 56 states have internal predecessors, (3133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:14,838 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:09:14,838 INFO L232 CegarLoopForPetriNet]: trace histogram [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] [2023-11-29 23:09:14,847 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 23:09:15,043 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:09:15,043 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 23:09:15,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:09:15,044 INFO L85 PathProgramCache]: Analyzing trace with hash -594400514, now seen corresponding path program 1 times [2023-11-29 23:09:15,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:09:15,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006697781] [2023-11-29 23:09:15,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:09:15,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:09:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:09:15,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 23:09:15,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:09:15,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006697781] [2023-11-29 23:09:15,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006697781] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:09:15,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:09:15,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 23:09:15,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492889677] [2023-11-29 23:09:15,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:09:15,110 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 23:09:15,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:09:15,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 23:09:15,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 23:09:15,111 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 137 [2023-11-29 23:09:15,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 316 transitions, 2278 flow. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:15,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:09:15,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 137 [2023-11-29 23:09:15,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:09:15,250 INFO L124 PetriNetUnfolderBase]: 320/1647 cut-off events. [2023-11-29 23:09:15,250 INFO L125 PetriNetUnfolderBase]: For 4944/4956 co-relation queries the response was YES. [2023-11-29 23:09:15,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4400 conditions, 1647 events. 320/1647 cut-off events. For 4944/4956 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 12574 event pairs, 30 based on Foata normal form. 2/1458 useless extension candidates. Maximal degree in co-relation 2540. Up to 434 conditions per place. [2023-11-29 23:09:15,257 INFO L140 encePairwiseOnDemand]: 134/137 looper letters, 58 selfloop transitions, 2 changer transitions 95/316 dead transitions. [2023-11-29 23:09:15,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 316 transitions, 2527 flow [2023-11-29 23:09:15,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 23:09:15,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 23:09:15,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2023-11-29 23:09:15,258 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.9051094890510949 [2023-11-29 23:09:15,259 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2023-11-29 23:09:15,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2023-11-29 23:09:15,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:09:15,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2023-11-29 23:09:15,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:15,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:15,260 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:15,262 INFO L307 CegarLoopForPetriNet]: 122 programPoint places, 80 predicate places. [2023-11-29 23:09:15,262 INFO L500 AbstractCegarLoop]: Abstraction has has 202 places, 316 transitions, 2527 flow [2023-11-29 23:09:15,263 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:15,263 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:09:15,263 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 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] [2023-11-29 23:09:15,263 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 23:09:15,263 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 23:09:15,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:09:15,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1886106167, now seen corresponding path program 2 times [2023-11-29 23:09:15,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:09:15,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558393561] [2023-11-29 23:09:15,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:09:15,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:09:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:09:15,328 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:09:15,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:09:15,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558393561] [2023-11-29 23:09:15,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558393561] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:09:15,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:09:15,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 23:09:15,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254862519] [2023-11-29 23:09:15,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:09:15,332 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 23:09:15,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:09:15,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 23:09:15,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 23:09:15,333 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 137 [2023-11-29 23:09:15,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 316 transitions, 2527 flow. Second operand has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:15,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:09:15,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 137 [2023-11-29 23:09:15,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:09:15,612 INFO L124 PetriNetUnfolderBase]: 464/2442 cut-off events. [2023-11-29 23:09:15,612 INFO L125 PetriNetUnfolderBase]: For 10755/10784 co-relation queries the response was YES. [2023-11-29 23:09:15,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7042 conditions, 2442 events. 464/2442 cut-off events. For 10755/10784 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 20789 event pairs, 70 based on Foata normal form. 51/2203 useless extension candidates. Maximal degree in co-relation 4051. Up to 667 conditions per place. [2023-11-29 23:09:15,623 INFO L140 encePairwiseOnDemand]: 133/137 looper letters, 72 selfloop transitions, 33 changer transitions 105/361 dead transitions. [2023-11-29 23:09:15,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 361 transitions, 3467 flow [2023-11-29 23:09:15,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 23:09:15,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 23:09:15,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 492 transitions. [2023-11-29 23:09:15,624 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8978102189781022 [2023-11-29 23:09:15,624 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 492 transitions. [2023-11-29 23:09:15,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 492 transitions. [2023-11-29 23:09:15,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:09:15,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 492 transitions. [2023-11-29 23:09:15,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:15,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:15,626 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:15,627 INFO L307 CegarLoopForPetriNet]: 122 programPoint places, 83 predicate places. [2023-11-29 23:09:15,627 INFO L500 AbstractCegarLoop]: Abstraction has has 205 places, 361 transitions, 3467 flow [2023-11-29 23:09:15,627 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:15,628 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:09:15,628 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 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] [2023-11-29 23:09:15,628 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 23:09:15,628 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 23:09:15,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:09:15,630 INFO L85 PathProgramCache]: Analyzing trace with hash 230916193, now seen corresponding path program 3 times [2023-11-29 23:09:15,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:09:15,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373021947] [2023-11-29 23:09:15,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:09:15,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:09:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:09:15,759 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:09:15,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:09:15,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373021947] [2023-11-29 23:09:15,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373021947] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:09:15,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:09:15,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 23:09:15,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658118398] [2023-11-29 23:09:15,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:09:15,760 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 23:09:15,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:09:15,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 23:09:15,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 23:09:15,761 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 137 [2023-11-29 23:09:15,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 361 transitions, 3467 flow. Second operand has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:15,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:09:15,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 137 [2023-11-29 23:09:15,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:09:16,027 INFO L124 PetriNetUnfolderBase]: 482/3053 cut-off events. [2023-11-29 23:09:16,027 INFO L125 PetriNetUnfolderBase]: For 12491/12582 co-relation queries the response was YES. [2023-11-29 23:09:16,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8970 conditions, 3053 events. 482/3053 cut-off events. For 12491/12582 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 27831 event pairs, 53 based on Foata normal form. 18/2778 useless extension candidates. Maximal degree in co-relation 5521. Up to 702 conditions per place. [2023-11-29 23:09:16,042 INFO L140 encePairwiseOnDemand]: 133/137 looper letters, 94 selfloop transitions, 4 changer transitions 119/386 dead transitions. [2023-11-29 23:09:16,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 386 transitions, 4257 flow [2023-11-29 23:09:16,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 23:09:16,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 23:09:16,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 490 transitions. [2023-11-29 23:09:16,043 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8941605839416058 [2023-11-29 23:09:16,044 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 490 transitions. [2023-11-29 23:09:16,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 490 transitions. [2023-11-29 23:09:16,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:09:16,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 490 transitions. [2023-11-29 23:09:16,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 122.5) internal successors, (490), 4 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:16,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:16,046 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:16,047 INFO L307 CegarLoopForPetriNet]: 122 programPoint places, 86 predicate places. [2023-11-29 23:09:16,047 INFO L500 AbstractCegarLoop]: Abstraction has has 208 places, 386 transitions, 4257 flow [2023-11-29 23:09:16,047 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:16,047 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:09:16,048 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 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] [2023-11-29 23:09:16,048 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 23:09:16,048 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 23:09:16,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:09:16,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1383095999, now seen corresponding path program 1 times [2023-11-29 23:09:16,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:09:16,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368234170] [2023-11-29 23:09:16,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:09:16,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:09:16,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:09:16,271 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:09:16,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:09:16,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368234170] [2023-11-29 23:09:16,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368234170] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:09:16,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846652567] [2023-11-29 23:09:16,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:09:16,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:09:16,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:09:16,287 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 23:09:16,338 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 23:09:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:09:16,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 23:09:16,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:09:16,716 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:09:16,716 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:09:17,192 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:09:17,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846652567] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:09:17,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:09:17,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 29 [2023-11-29 23:09:17,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881883811] [2023-11-29 23:09:17,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:09:17,193 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 23:09:17,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:09:17,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 23:09:17,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=663, Unknown=0, NotChecked=0, Total=812 [2023-11-29 23:09:17,195 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 137 [2023-11-29 23:09:17,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 386 transitions, 4257 flow. Second operand has 29 states, 29 states have (on average 96.3103448275862) internal successors, (2793), 29 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:17,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:09:17,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 137 [2023-11-29 23:09:17,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:09:18,374 INFO L124 PetriNetUnfolderBase]: 1212/5281 cut-off events. [2023-11-29 23:09:18,374 INFO L125 PetriNetUnfolderBase]: For 50815/52014 co-relation queries the response was YES. [2023-11-29 23:09:18,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19875 conditions, 5281 events. 1212/5281 cut-off events. For 50815/52014 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 53198 event pairs, 131 based on Foata normal form. 108/4926 useless extension candidates. Maximal degree in co-relation 10253. Up to 1413 conditions per place. [2023-11-29 23:09:18,394 INFO L140 encePairwiseOnDemand]: 115/137 looper letters, 154 selfloop transitions, 49 changer transitions 270/586 dead transitions. [2023-11-29 23:09:18,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 586 transitions, 8409 flow [2023-11-29 23:09:18,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 23:09:18,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-11-29 23:09:18,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3393 transitions. [2023-11-29 23:09:18,401 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7076120959332638 [2023-11-29 23:09:18,401 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3393 transitions. [2023-11-29 23:09:18,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3393 transitions. [2023-11-29 23:09:18,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:09:18,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3393 transitions. [2023-11-29 23:09:18,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 96.94285714285714) internal successors, (3393), 35 states have internal predecessors, (3393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:18,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 137.0) internal successors, (4932), 36 states have internal predecessors, (4932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:18,417 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 137.0) internal successors, (4932), 36 states have internal predecessors, (4932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:18,418 INFO L307 CegarLoopForPetriNet]: 122 programPoint places, 120 predicate places. [2023-11-29 23:09:18,418 INFO L500 AbstractCegarLoop]: Abstraction has has 242 places, 586 transitions, 8409 flow [2023-11-29 23:09:18,419 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 96.3103448275862) internal successors, (2793), 29 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:18,419 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:09:18,419 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 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] [2023-11-29 23:09:18,439 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 23:09:18,623 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,SelfDestructingSolverStorable8 [2023-11-29 23:09:18,623 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 23:09:18,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:09:18,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1486594903, now seen corresponding path program 2 times [2023-11-29 23:09:18,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:09:18,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983858189] [2023-11-29 23:09:18,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:09:18,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:09:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:09:18,889 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:09:18,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:09:18,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983858189] [2023-11-29 23:09:18,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983858189] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:09:18,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862323306] [2023-11-29 23:09:18,890 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 23:09:18,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:09:18,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:09:18,905 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 23:09:18,936 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 23:09:19,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 23:09:19,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:09:19,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 23:09:19,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:09:19,381 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:09:19,381 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:09:19,899 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:09:19,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862323306] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:09:19,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:09:19,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 33 [2023-11-29 23:09:19,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819512134] [2023-11-29 23:09:19,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:09:19,900 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-29 23:09:19,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:09:19,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-29 23:09:19,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=858, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 23:09:19,904 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 137 [2023-11-29 23:09:19,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 586 transitions, 8409 flow. Second operand has 33 states, 33 states have (on average 96.21212121212122) internal successors, (3175), 33 states have internal predecessors, (3175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:19,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:09:19,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 137 [2023-11-29 23:09:19,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:09:21,169 INFO L124 PetriNetUnfolderBase]: 656/2711 cut-off events. [2023-11-29 23:09:21,169 INFO L125 PetriNetUnfolderBase]: For 32225/32393 co-relation queries the response was YES. [2023-11-29 23:09:21,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12432 conditions, 2711 events. 656/2711 cut-off events. For 32225/32393 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 22103 event pairs, 75 based on Foata normal form. 88/2557 useless extension candidates. Maximal degree in co-relation 8801. Up to 862 conditions per place. [2023-11-29 23:09:21,185 INFO L140 encePairwiseOnDemand]: 113/137 looper letters, 120 selfloop transitions, 32 changer transitions 183/439 dead transitions. [2023-11-29 23:09:21,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 439 transitions, 6017 flow [2023-11-29 23:09:21,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 23:09:21,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-11-29 23:09:21,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3193 transitions. [2023-11-29 23:09:21,188 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7062596770625967 [2023-11-29 23:09:21,188 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3193 transitions. [2023-11-29 23:09:21,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3193 transitions. [2023-11-29 23:09:21,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:09:21,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3193 transitions. [2023-11-29 23:09:21,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 96.75757575757575) internal successors, (3193), 33 states have internal predecessors, (3193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:21,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 137.0) internal successors, (4658), 34 states have internal predecessors, (4658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:21,197 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 137.0) internal successors, (4658), 34 states have internal predecessors, (4658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:21,198 INFO L307 CegarLoopForPetriNet]: 122 programPoint places, 150 predicate places. [2023-11-29 23:09:21,198 INFO L500 AbstractCegarLoop]: Abstraction has has 272 places, 439 transitions, 6017 flow [2023-11-29 23:09:21,199 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 96.21212121212122) internal successors, (3175), 33 states have internal predecessors, (3175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:21,199 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:09:21,199 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 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] [2023-11-29 23:09:21,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 23:09:21,404 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:09:21,404 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 23:09:21,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:09:21,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1355205481, now seen corresponding path program 3 times [2023-11-29 23:09:21,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:09:21,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888900655] [2023-11-29 23:09:21,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:09:21,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:09:21,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:09:21,633 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:09:21,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:09:21,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888900655] [2023-11-29 23:09:21,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888900655] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:09:21,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430937488] [2023-11-29 23:09:21,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 23:09:21,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:09:21,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:09:21,650 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 23:09:21,652 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 23:09:21,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 23:09:21,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:09:21,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 23:09:21,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:09:21,937 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 23:09:21,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:09:22,174 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 23:09:22,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430937488] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:09:22,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:09:22,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 26 [2023-11-29 23:09:22,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584301070] [2023-11-29 23:09:22,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:09:22,175 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 23:09:22,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:09:22,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 23:09:22,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2023-11-29 23:09:22,178 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 137 [2023-11-29 23:09:22,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 439 transitions, 6017 flow. Second operand has 26 states, 26 states have (on average 96.3076923076923) internal successors, (2504), 26 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:22,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:09:22,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 137 [2023-11-29 23:09:22,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:09:23,195 INFO L124 PetriNetUnfolderBase]: 666/2850 cut-off events. [2023-11-29 23:09:23,196 INFO L125 PetriNetUnfolderBase]: For 34791/35189 co-relation queries the response was YES. [2023-11-29 23:09:23,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14009 conditions, 2850 events. 666/2850 cut-off events. For 34791/35189 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 23731 event pairs, 96 based on Foata normal form. 36/2637 useless extension candidates. Maximal degree in co-relation 9927. Up to 895 conditions per place. [2023-11-29 23:09:23,211 INFO L140 encePairwiseOnDemand]: 114/137 looper letters, 121 selfloop transitions, 28 changer transitions 198/450 dead transitions. [2023-11-29 23:09:23,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 450 transitions, 6865 flow [2023-11-29 23:09:23,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 23:09:23,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-29 23:09:23,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2701 transitions. [2023-11-29 23:09:23,214 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.704118873826903 [2023-11-29 23:09:23,214 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2701 transitions. [2023-11-29 23:09:23,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2701 transitions. [2023-11-29 23:09:23,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:09:23,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2701 transitions. [2023-11-29 23:09:23,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 96.46428571428571) internal successors, (2701), 28 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:23,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 137.0) internal successors, (3973), 29 states have internal predecessors, (3973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:23,221 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 137.0) internal successors, (3973), 29 states have internal predecessors, (3973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:23,222 INFO L307 CegarLoopForPetriNet]: 122 programPoint places, 177 predicate places. [2023-11-29 23:09:23,222 INFO L500 AbstractCegarLoop]: Abstraction has has 299 places, 450 transitions, 6865 flow [2023-11-29 23:09:23,222 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 96.3076923076923) internal successors, (2504), 26 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:23,222 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:09:23,222 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 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] [2023-11-29 23:09:23,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 23:09:23,427 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:09:23,427 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 23:09:23,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:09:23,428 INFO L85 PathProgramCache]: Analyzing trace with hash -526759953, now seen corresponding path program 4 times [2023-11-29 23:09:23,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:09:23,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127212891] [2023-11-29 23:09:23,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:09:23,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:09:23,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:09:23,667 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:09:23,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:09:23,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127212891] [2023-11-29 23:09:23,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127212891] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:09:23,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655507061] [2023-11-29 23:09:23,667 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 23:09:23,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:09:23,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:09:23,668 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 23:09:23,715 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 23:09:23,758 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 23:09:23,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:09:23,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 23:09:23,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:09:24,190 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:09:24,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:09:24,670 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:09:24,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655507061] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:09:24,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:09:24,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 31 [2023-11-29 23:09:24,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54422173] [2023-11-29 23:09:24,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:09:24,673 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 23:09:24,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:09:24,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 23:09:24,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2023-11-29 23:09:24,675 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 137 [2023-11-29 23:09:24,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 450 transitions, 6865 flow. Second operand has 31 states, 31 states have (on average 96.2258064516129) internal successors, (2983), 31 states have internal predecessors, (2983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:24,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:09:24,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 137 [2023-11-29 23:09:24,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:09:26,090 INFO L124 PetriNetUnfolderBase]: 637/2679 cut-off events. [2023-11-29 23:09:26,091 INFO L125 PetriNetUnfolderBase]: For 36282/36482 co-relation queries the response was YES. [2023-11-29 23:09:26,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14749 conditions, 2679 events. 637/2679 cut-off events. For 36282/36482 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 21696 event pairs, 57 based on Foata normal form. 43/2499 useless extension candidates. Maximal degree in co-relation 10927. Up to 910 conditions per place. [2023-11-29 23:09:26,104 INFO L140 encePairwiseOnDemand]: 112/137 looper letters, 103 selfloop transitions, 22 changer transitions 212/432 dead transitions. [2023-11-29 23:09:26,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 432 transitions, 7058 flow [2023-11-29 23:09:26,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-29 23:09:26,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-11-29 23:09:26,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 3561 transitions. [2023-11-29 23:09:26,108 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7025054251331624 [2023-11-29 23:09:26,108 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 3561 transitions. [2023-11-29 23:09:26,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 3561 transitions. [2023-11-29 23:09:26,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:09:26,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 3561 transitions. [2023-11-29 23:09:26,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 96.24324324324324) internal successors, (3561), 37 states have internal predecessors, (3561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:26,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 137.0) internal successors, (5206), 38 states have internal predecessors, (5206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:26,116 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 137.0) internal successors, (5206), 38 states have internal predecessors, (5206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:26,117 INFO L307 CegarLoopForPetriNet]: 122 programPoint places, 210 predicate places. [2023-11-29 23:09:26,117 INFO L500 AbstractCegarLoop]: Abstraction has has 332 places, 432 transitions, 7058 flow [2023-11-29 23:09:26,117 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 96.2258064516129) internal successors, (2983), 31 states have internal predecessors, (2983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:26,117 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:09:26,118 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 23:09:26,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 23:09:26,322 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 23:09:26,322 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 23:09:26,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:09:26,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1197351989, now seen corresponding path program 5 times [2023-11-29 23:09:26,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:09:26,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145727445] [2023-11-29 23:09:26,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:09:26,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:09:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:09:27,205 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:09:27,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:09:27,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145727445] [2023-11-29 23:09:27,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145727445] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:09:27,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012747489] [2023-11-29 23:09:27,206 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 23:09:27,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:09:27,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:09:27,207 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 23:09:27,223 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 23:09:27,332 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-29 23:09:27,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:09:27,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 60 conjunts are in the unsatisfiable core [2023-11-29 23:09:27,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:09:27,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 23:09:27,370 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-29 23:09:27,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2023-11-29 23:09:27,670 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 23:09:27,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-11-29 23:09:27,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 23:09:28,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 23:09:28,407 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 23:09:28,778 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 23:09:28,780 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:09:28,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 17 [2023-11-29 23:09:28,800 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:09:28,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:09:31,674 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:09:31,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 86 [2023-11-29 23:09:31,709 INFO L349 Elim1Store]: treesize reduction 18, result has 60.0 percent of original size [2023-11-29 23:09:31,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 262 treesize of output 255 [2023-11-29 23:09:31,739 INFO L349 Elim1Store]: treesize reduction 18, result has 60.0 percent of original size [2023-11-29 23:09:31,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 229 treesize of output 205 [2023-11-29 23:09:31,770 INFO L349 Elim1Store]: treesize reduction 18, result has 60.0 percent of original size [2023-11-29 23:09:31,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 152 treesize of output 153 [2023-11-29 23:09:32,633 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:09:32,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 87 [2023-11-29 23:09:32,735 INFO L349 Elim1Store]: treesize reduction 36, result has 20.0 percent of original size [2023-11-29 23:09:32,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 562 treesize of output 504 [2023-11-29 23:09:32,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 23:09:32,769 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 23:09:32,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 23:09:32,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 154 [2023-11-29 23:09:32,788 INFO L349 Elim1Store]: treesize reduction 36, result has 20.0 percent of original size [2023-11-29 23:09:32,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 177 treesize of output 135 [2023-11-29 23:09:36,185 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:09:36,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012747489] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:09:36,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:09:36,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 26, 26] total 66 [2023-11-29 23:09:36,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265745153] [2023-11-29 23:09:36,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:09:36,188 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-11-29 23:09:36,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:09:36,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-11-29 23:09:36,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=592, Invalid=3653, Unknown=45, NotChecked=0, Total=4290 [2023-11-29 23:09:36,193 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 137 [2023-11-29 23:09:36,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 432 transitions, 7058 flow. Second operand has 66 states, 66 states have (on average 55.878787878787875) internal successors, (3688), 66 states have internal predecessors, (3688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:36,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:09:36,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 137 [2023-11-29 23:09:36,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:09:44,102 INFO L124 PetriNetUnfolderBase]: 1316/5512 cut-off events. [2023-11-29 23:09:44,102 INFO L125 PetriNetUnfolderBase]: For 92992/93527 co-relation queries the response was YES. [2023-11-29 23:09:44,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32281 conditions, 5512 events. 1316/5512 cut-off events. For 92992/93527 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 53119 event pairs, 127 based on Foata normal form. 126/5171 useless extension candidates. Maximal degree in co-relation 18398. Up to 2027 conditions per place. [2023-11-29 23:09:44,129 INFO L140 encePairwiseOnDemand]: 102/137 looper letters, 135 selfloop transitions, 98 changer transitions 423/712 dead transitions. [2023-11-29 23:09:44,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 712 transitions, 13795 flow [2023-11-29 23:09:44,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2023-11-29 23:09:44,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2023-11-29 23:09:44,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 4631 transitions. [2023-11-29 23:09:44,134 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.41223072814669753 [2023-11-29 23:09:44,134 INFO L72 ComplementDD]: Start complementDD. Operand 82 states and 4631 transitions. [2023-11-29 23:09:44,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 82 states and 4631 transitions. [2023-11-29 23:09:44,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:09:44,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 82 states and 4631 transitions. [2023-11-29 23:09:44,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 83 states, 82 states have (on average 56.47560975609756) internal successors, (4631), 82 states have internal predecessors, (4631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:44,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 83 states, 83 states have (on average 137.0) internal successors, (11371), 83 states have internal predecessors, (11371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:44,148 INFO L81 ComplementDD]: Finished complementDD. Result has 83 states, 83 states have (on average 137.0) internal successors, (11371), 83 states have internal predecessors, (11371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:44,148 INFO L307 CegarLoopForPetriNet]: 122 programPoint places, 291 predicate places. [2023-11-29 23:09:44,148 INFO L500 AbstractCegarLoop]: Abstraction has has 413 places, 712 transitions, 13795 flow [2023-11-29 23:09:44,149 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 55.878787878787875) internal successors, (3688), 66 states have internal predecessors, (3688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:44,149 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:09:44,150 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 23:09:44,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 23:09:44,354 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:09:44,355 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 23:09:44,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:09:44,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1904203527, now seen corresponding path program 6 times [2023-11-29 23:09:44,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:09:44,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670904513] [2023-11-29 23:09:44,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:09:44,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:09:44,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:09:45,291 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:09:45,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:09:45,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670904513] [2023-11-29 23:09:45,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670904513] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:09:45,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322872422] [2023-11-29 23:09:45,291 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 23:09:45,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:09:45,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:09:45,293 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 23:09:45,295 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 23:09:45,482 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-11-29 23:09:45,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:09:45,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 56 conjunts are in the unsatisfiable core [2023-11-29 23:09:45,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:09:46,148 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 23:09:46,377 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 23:09:46,421 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 23:09:46,701 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:09:46,701 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:09:48,117 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:09:48,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 124 treesize of output 88 [2023-11-29 23:09:48,138 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:09:48,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 570 treesize of output 538 [2023-11-29 23:09:48,169 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:09:48,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 180 treesize of output 190 [2023-11-29 23:09:48,190 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:09:48,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 179 treesize of output 163 [2023-11-29 23:09:49,018 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:09:49,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 87 [2023-11-29 23:09:49,031 INFO L349 Elim1Store]: treesize reduction 28, result has 24.3 percent of original size [2023-11-29 23:09:49,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 266 treesize of output 240 [2023-11-29 23:09:49,048 INFO L349 Elim1Store]: treesize reduction 28, result has 24.3 percent of original size [2023-11-29 23:09:49,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 232 treesize of output 188 [2023-11-29 23:09:49,065 INFO L349 Elim1Store]: treesize reduction 28, result has 24.3 percent of original size [2023-11-29 23:09:49,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 153 treesize of output 135 [2023-11-29 23:09:49,134 INFO L209 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-11-29 23:09:49,769 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:09:49,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322872422] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:09:49,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:09:49,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 26, 23] total 63 [2023-11-29 23:09:49,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780253855] [2023-11-29 23:09:49,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:09:49,770 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-11-29 23:09:49,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:09:49,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-11-29 23:09:49,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=808, Invalid=3061, Unknown=37, NotChecked=0, Total=3906 [2023-11-29 23:09:49,772 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 137 [2023-11-29 23:09:49,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 712 transitions, 13795 flow. Second operand has 63 states, 63 states have (on average 58.96825396825397) internal successors, (3715), 63 states have internal predecessors, (3715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:49,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:09:49,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 137 [2023-11-29 23:09:49,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:09:56,713 INFO L124 PetriNetUnfolderBase]: 1949/7796 cut-off events. [2023-11-29 23:09:56,713 INFO L125 PetriNetUnfolderBase]: For 149982/151097 co-relation queries the response was YES. [2023-11-29 23:09:56,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48996 conditions, 7796 events. 1949/7796 cut-off events. For 149982/151097 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 80114 event pairs, 200 based on Foata normal form. 86/7235 useless extension candidates. Maximal degree in co-relation 24099. Up to 3015 conditions per place. [2023-11-29 23:09:56,764 INFO L140 encePairwiseOnDemand]: 103/137 looper letters, 120 selfloop transitions, 72 changer transitions 655/906 dead transitions. [2023-11-29 23:09:56,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 906 transitions, 19465 flow [2023-11-29 23:09:56,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2023-11-29 23:09:56,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2023-11-29 23:09:56,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 5367 transitions. [2023-11-29 23:09:56,769 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.43527980535279803 [2023-11-29 23:09:56,769 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 5367 transitions. [2023-11-29 23:09:56,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 5367 transitions. [2023-11-29 23:09:56,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:09:56,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 5367 transitions. [2023-11-29 23:09:56,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 59.63333333333333) internal successors, (5367), 90 states have internal predecessors, (5367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:56,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 137.0) internal successors, (12467), 91 states have internal predecessors, (12467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:56,783 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 137.0) internal successors, (12467), 91 states have internal predecessors, (12467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:56,784 INFO L307 CegarLoopForPetriNet]: 122 programPoint places, 380 predicate places. [2023-11-29 23:09:56,784 INFO L500 AbstractCegarLoop]: Abstraction has has 502 places, 906 transitions, 19465 flow [2023-11-29 23:09:56,785 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 58.96825396825397) internal successors, (3715), 63 states have internal predecessors, (3715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:09:56,785 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:09:56,785 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2023-11-29 23:09:56,804 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 23:09:56,990 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:09:56,990 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 23:09:56,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:09:56,991 INFO L85 PathProgramCache]: Analyzing trace with hash -783382798, now seen corresponding path program 7 times [2023-11-29 23:09:56,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:09:56,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279363948] [2023-11-29 23:09:56,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:09:56,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:09:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:09:58,648 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:09:58,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:09:58,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279363948] [2023-11-29 23:09:58,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279363948] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:09:58,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993955515] [2023-11-29 23:09:58,649 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 23:09:58,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:09:58,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:09:58,661 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 23:09:58,662 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 23:09:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:09:58,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 23:09:58,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:09:59,372 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:09:59,372 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:09:59,702 INFO L349 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2023-11-29 23:09:59,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 50 [2023-11-29 23:10:00,937 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:10:00,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993955515] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:10:00,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:10:00,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 19, 19] total 50 [2023-11-29 23:10:00,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279030318] [2023-11-29 23:10:00,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:10:00,938 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-29 23:10:00,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:10:00,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-29 23:10:00,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=472, Invalid=1978, Unknown=0, NotChecked=0, Total=2450 [2023-11-29 23:10:00,940 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 137 [2023-11-29 23:10:00,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 906 transitions, 19465 flow. Second operand has 50 states, 50 states have (on average 66.52) internal successors, (3326), 50 states have internal predecessors, (3326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:10:00,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:10:00,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 137 [2023-11-29 23:10:00,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:10:05,602 INFO L124 PetriNetUnfolderBase]: 3136/12513 cut-off events. [2023-11-29 23:10:05,603 INFO L125 PetriNetUnfolderBase]: For 279212/281167 co-relation queries the response was YES. [2023-11-29 23:10:05,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82163 conditions, 12513 events. 3136/12513 cut-off events. For 279212/281167 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 140590 event pairs, 380 based on Foata normal form. 98/11560 useless extension candidates. Maximal degree in co-relation 33903. Up to 4922 conditions per place. [2023-11-29 23:10:05,690 INFO L140 encePairwiseOnDemand]: 106/137 looper letters, 270 selfloop transitions, 142 changer transitions 859/1333 dead transitions. [2023-11-29 23:10:05,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 1333 transitions, 31853 flow [2023-11-29 23:10:05,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-11-29 23:10:05,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2023-11-29 23:10:05,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 5951 transitions. [2023-11-29 23:10:05,694 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.48806692364471416 [2023-11-29 23:10:05,695 INFO L72 ComplementDD]: Start complementDD. Operand 89 states and 5951 transitions. [2023-11-29 23:10:05,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 5951 transitions. [2023-11-29 23:10:05,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:10:05,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 89 states and 5951 transitions. [2023-11-29 23:10:05,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 90 states, 89 states have (on average 66.86516853932584) internal successors, (5951), 89 states have internal predecessors, (5951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:10:05,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 90 states, 90 states have (on average 137.0) internal successors, (12330), 90 states have internal predecessors, (12330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:10:05,708 INFO L81 ComplementDD]: Finished complementDD. Result has 90 states, 90 states have (on average 137.0) internal successors, (12330), 90 states have internal predecessors, (12330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:10:05,709 INFO L307 CegarLoopForPetriNet]: 122 programPoint places, 468 predicate places. [2023-11-29 23:10:05,709 INFO L500 AbstractCegarLoop]: Abstraction has has 590 places, 1333 transitions, 31853 flow [2023-11-29 23:10:05,709 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 66.52) internal successors, (3326), 50 states have internal predecessors, (3326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:10:05,709 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:10:05,709 INFO L232 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2023-11-29 23:10:05,728 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 23:10:05,915 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 23:10:05,915 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 23:10:05,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:10:05,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1855830447, now seen corresponding path program 8 times [2023-11-29 23:10:05,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:10:05,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990557329] [2023-11-29 23:10:05,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:10:05,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:10:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:10:05,994 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 23:10:05,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:10:05,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990557329] [2023-11-29 23:10:05,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990557329] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:10:05,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769311473] [2023-11-29 23:10:05,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 23:10:05,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:10:05,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:10:06,010 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 23:10:06,028 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 23:10:06,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 23:10:06,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:10:06,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 23:10:06,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:10:06,194 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 23:10:06,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:10:06,414 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-29 23:10:06,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769311473] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:10:06,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:10:06,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 7] total 10 [2023-11-29 23:10:06,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096070941] [2023-11-29 23:10:06,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:10:06,416 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 23:10:06,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:10:06,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 23:10:06,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-11-29 23:10:06,419 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 137 [2023-11-29 23:10:06,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 1333 transitions, 31853 flow. Second operand has 10 states, 10 states have (on average 119.5) internal successors, (1195), 10 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:10:06,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:10:06,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 137 [2023-11-29 23:10:06,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:10:09,860 INFO L124 PetriNetUnfolderBase]: 4119/16161 cut-off events. [2023-11-29 23:10:09,880 INFO L125 PetriNetUnfolderBase]: For 432136/434037 co-relation queries the response was YES. [2023-11-29 23:10:09,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112487 conditions, 16161 events. 4119/16161 cut-off events. For 432136/434037 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 189216 event pairs, 425 based on Foata normal form. 169/14963 useless extension candidates. Maximal degree in co-relation 50511. Up to 6604 conditions per place. [2023-11-29 23:10:09,966 INFO L140 encePairwiseOnDemand]: 131/137 looper letters, 267 selfloop transitions, 125 changer transitions 979/1576 dead transitions. [2023-11-29 23:10:09,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 1576 transitions, 41829 flow [2023-11-29 23:10:09,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 23:10:09,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 23:10:09,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 732 transitions. [2023-11-29 23:10:09,967 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8905109489051095 [2023-11-29 23:10:09,967 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 732 transitions. [2023-11-29 23:10:09,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 732 transitions. [2023-11-29 23:10:09,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:10:09,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 732 transitions. [2023-11-29 23:10:09,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:10:09,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 137.0) internal successors, (959), 7 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:10:09,985 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 137.0) internal successors, (959), 7 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:10:09,985 INFO L307 CegarLoopForPetriNet]: 122 programPoint places, 473 predicate places. [2023-11-29 23:10:09,985 INFO L500 AbstractCegarLoop]: Abstraction has has 595 places, 1576 transitions, 41829 flow [2023-11-29 23:10:09,985 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 119.5) internal successors, (1195), 10 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:10:09,985 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:10:09,985 INFO L232 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 23:10:09,995 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 23:10:10,192 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,SelfDestructingSolverStorable15 [2023-11-29 23:10:10,193 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 23:10:10,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:10:10,193 INFO L85 PathProgramCache]: Analyzing trace with hash 2060843083, now seen corresponding path program 9 times [2023-11-29 23:10:10,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:10:10,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112913400] [2023-11-29 23:10:10,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:10:10,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:10:10,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:10:11,276 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:10:11,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:10:11,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112913400] [2023-11-29 23:10:11,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112913400] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:10:11,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918763708] [2023-11-29 23:10:11,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 23:10:11,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:10:11,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:10:11,289 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 23:10:11,298 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 23:10:11,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-29 23:10:11,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:10:11,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 23:10:11,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:10:11,865 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 23:10:11,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:10:12,227 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:10:12,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 60 [2023-11-29 23:10:12,517 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-29 23:10:12,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918763708] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:10:12,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:10:12,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 12, 9] total 39 [2023-11-29 23:10:12,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141546762] [2023-11-29 23:10:12,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:10:12,518 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-29 23:10:12,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:10:12,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-29 23:10:12,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1307, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 23:10:12,520 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 137 [2023-11-29 23:10:12,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 1576 transitions, 41829 flow. Second operand has 39 states, 39 states have (on average 62.84615384615385) internal successors, (2451), 39 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:10:12,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:10:12,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 137 [2023-11-29 23:10:12,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:10:21,736 INFO L124 PetriNetUnfolderBase]: 7307/25442 cut-off events. [2023-11-29 23:10:21,737 INFO L125 PetriNetUnfolderBase]: For 630305/637881 co-relation queries the response was YES. [2023-11-29 23:10:21,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170500 conditions, 25442 events. 7307/25442 cut-off events. For 630305/637881 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 309675 event pairs, 528 based on Foata normal form. 187/23484 useless extension candidates. Maximal degree in co-relation 71074. Up to 8658 conditions per place. [2023-11-29 23:10:21,865 INFO L140 encePairwiseOnDemand]: 105/137 looper letters, 485 selfloop transitions, 115 changer transitions 1452/2103 dead transitions. [2023-11-29 23:10:21,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 663 places, 2103 transitions, 59543 flow [2023-11-29 23:10:21,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-11-29 23:10:21,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2023-11-29 23:10:21,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 4266 transitions. [2023-11-29 23:10:21,869 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.4512853062519835 [2023-11-29 23:10:21,869 INFO L72 ComplementDD]: Start complementDD. Operand 69 states and 4266 transitions. [2023-11-29 23:10:21,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 4266 transitions. [2023-11-29 23:10:21,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:10:21,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 69 states and 4266 transitions. [2023-11-29 23:10:21,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 70 states, 69 states have (on average 61.82608695652174) internal successors, (4266), 69 states have internal predecessors, (4266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:10:21,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 70 states, 70 states have (on average 137.0) internal successors, (9590), 70 states have internal predecessors, (9590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:10:21,877 INFO L81 ComplementDD]: Finished complementDD. Result has 70 states, 70 states have (on average 137.0) internal successors, (9590), 70 states have internal predecessors, (9590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:10:21,878 INFO L307 CegarLoopForPetriNet]: 122 programPoint places, 541 predicate places. [2023-11-29 23:10:21,878 INFO L500 AbstractCegarLoop]: Abstraction has has 663 places, 2103 transitions, 59543 flow [2023-11-29 23:10:21,878 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 62.84615384615385) internal successors, (2451), 39 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:10:21,878 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:10:21,878 INFO L232 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 23:10:21,883 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 23:10:22,083 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,SelfDestructingSolverStorable16 [2023-11-29 23:10:22,084 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 23:10:22,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:10:22,084 INFO L85 PathProgramCache]: Analyzing trace with hash -2010792580, now seen corresponding path program 10 times [2023-11-29 23:10:22,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:10:22,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117606633] [2023-11-29 23:10:22,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:10:22,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:10:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:10:23,549 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:10:23,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:10:23,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117606633] [2023-11-29 23:10:23,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117606633] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:10:23,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616431632] [2023-11-29 23:10:23,549 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 23:10:23,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:10:23,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:10:23,551 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:10:23,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 23:10:23,644 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 23:10:23,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:10:23,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-29 23:10:23,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:10:24,566 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 1 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:10:24,566 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:10:25,150 INFO L349 Elim1Store]: treesize reduction 30, result has 64.7 percent of original size [2023-11-29 23:10:25,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 108 treesize of output 84 [2023-11-29 23:10:26,032 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:10:26,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616431632] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:10:26,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:10:26,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22, 22] total 61 [2023-11-29 23:10:26,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148590181] [2023-11-29 23:10:26,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:10:26,033 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-11-29 23:10:26,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:10:26,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-11-29 23:10:26,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=624, Invalid=3036, Unknown=0, NotChecked=0, Total=3660 [2023-11-29 23:10:26,036 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 137 [2023-11-29 23:10:26,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 663 places, 2103 transitions, 59543 flow. Second operand has 61 states, 61 states have (on average 66.29508196721312) internal successors, (4044), 61 states have internal predecessors, (4044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:10:26,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:10:26,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 137 [2023-11-29 23:10:26,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:10:42,034 INFO L124 PetriNetUnfolderBase]: 10041/33947 cut-off events. [2023-11-29 23:10:42,034 INFO L125 PetriNetUnfolderBase]: For 997085/1007476 co-relation queries the response was YES. [2023-11-29 23:10:42,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246942 conditions, 33947 events. 10041/33947 cut-off events. For 997085/1007476 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 425662 event pairs, 779 based on Foata normal form. 909/32053 useless extension candidates. Maximal degree in co-relation 114331. Up to 12106 conditions per place. [2023-11-29 23:10:42,249 INFO L140 encePairwiseOnDemand]: 106/137 looper letters, 438 selfloop transitions, 281 changer transitions 2107/2945 dead transitions. [2023-11-29 23:10:42,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 810 places, 2945 transitions, 87917 flow [2023-11-29 23:10:42,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2023-11-29 23:10:42,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2023-11-29 23:10:42,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 9891 transitions. [2023-11-29 23:10:42,274 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.4878181100808838 [2023-11-29 23:10:42,274 INFO L72 ComplementDD]: Start complementDD. Operand 148 states and 9891 transitions. [2023-11-29 23:10:42,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 148 states and 9891 transitions. [2023-11-29 23:10:42,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:10:42,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 148 states and 9891 transitions. [2023-11-29 23:10:42,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 149 states, 148 states have (on average 66.83108108108108) internal successors, (9891), 148 states have internal predecessors, (9891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:10:42,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 149 states, 149 states have (on average 137.0) internal successors, (20413), 149 states have internal predecessors, (20413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:10:42,317 INFO L81 ComplementDD]: Finished complementDD. Result has 149 states, 149 states have (on average 137.0) internal successors, (20413), 149 states have internal predecessors, (20413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:10:42,317 INFO L307 CegarLoopForPetriNet]: 122 programPoint places, 688 predicate places. [2023-11-29 23:10:42,317 INFO L500 AbstractCegarLoop]: Abstraction has has 810 places, 2945 transitions, 87917 flow [2023-11-29 23:10:42,318 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 66.29508196721312) internal successors, (4044), 61 states have internal predecessors, (4044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:10:42,318 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:10:42,318 INFO L232 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 23:10:42,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 23:10:42,532 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 23:10:42,532 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 23:10:42,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:10:42,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1869511576, now seen corresponding path program 11 times [2023-11-29 23:10:42,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:10:42,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459281290] [2023-11-29 23:10:42,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:10:42,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:10:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:10:44,022 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:10:44,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:10:44,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459281290] [2023-11-29 23:10:44,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459281290] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:10:44,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010246741] [2023-11-29 23:10:44,023 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 23:10:44,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:10:44,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:10:44,024 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:10:44,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 23:10:44,155 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-29 23:10:44,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:10:44,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-29 23:10:44,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:10:45,178 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:10:45,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:10:45,828 INFO L349 Elim1Store]: treesize reduction 30, result has 64.7 percent of original size [2023-11-29 23:10:45,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 108 treesize of output 84 [2023-11-29 23:10:46,776 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:10:46,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010246741] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:10:46,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:10:46,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22, 22] total 62 [2023-11-29 23:10:46,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584493449] [2023-11-29 23:10:46,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:10:46,793 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-11-29 23:10:46,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:10:46,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-11-29 23:10:46,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=602, Invalid=3180, Unknown=0, NotChecked=0, Total=3782 [2023-11-29 23:10:46,796 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 137 [2023-11-29 23:10:46,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 810 places, 2945 transitions, 87917 flow. Second operand has 62 states, 62 states have (on average 66.25806451612904) internal successors, (4108), 62 states have internal predecessors, (4108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:10:46,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:10:46,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 137 [2023-11-29 23:10:46,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:11:05,854 INFO L124 PetriNetUnfolderBase]: 10496/36234 cut-off events. [2023-11-29 23:11:05,854 INFO L125 PetriNetUnfolderBase]: For 1218318/1228588 co-relation queries the response was YES. [2023-11-29 23:11:05,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273877 conditions, 36234 events. 10496/36234 cut-off events. For 1218318/1228588 co-relation queries the response was YES. Maximal size of possible extension queue 830. Compared 462388 event pairs, 844 based on Foata normal form. 1217/34441 useless extension candidates. Maximal degree in co-relation 101734. Up to 12814 conditions per place. [2023-11-29 23:11:06,056 INFO L140 encePairwiseOnDemand]: 106/137 looper letters, 306 selfloop transitions, 220 changer transitions 2431/3076 dead transitions. [2023-11-29 23:11:06,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 930 places, 3076 transitions, 97855 flow [2023-11-29 23:11:06,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-11-29 23:11:06,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2023-11-29 23:11:06,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 8466 transitions. [2023-11-29 23:11:06,062 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.4865796884878441 [2023-11-29 23:11:06,063 INFO L72 ComplementDD]: Start complementDD. Operand 127 states and 8466 transitions. [2023-11-29 23:11:06,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 127 states and 8466 transitions. [2023-11-29 23:11:06,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:11:06,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 127 states and 8466 transitions. [2023-11-29 23:11:06,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 128 states, 127 states have (on average 66.66141732283465) internal successors, (8466), 127 states have internal predecessors, (8466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:11:06,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 128 states, 128 states have (on average 137.0) internal successors, (17536), 128 states have internal predecessors, (17536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:11:06,078 INFO L81 ComplementDD]: Finished complementDD. Result has 128 states, 128 states have (on average 137.0) internal successors, (17536), 128 states have internal predecessors, (17536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:11:06,078 INFO L307 CegarLoopForPetriNet]: 122 programPoint places, 808 predicate places. [2023-11-29 23:11:06,078 INFO L500 AbstractCegarLoop]: Abstraction has has 930 places, 3076 transitions, 97855 flow [2023-11-29 23:11:06,079 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 66.25806451612904) internal successors, (4108), 62 states have internal predecessors, (4108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:11:06,079 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:11:06,079 INFO L232 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 23:11:06,084 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 23:11:06,283 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:11:06,284 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 23:11:06,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:11:06,284 INFO L85 PathProgramCache]: Analyzing trace with hash 353437908, now seen corresponding path program 12 times [2023-11-29 23:11:06,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:11:06,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746347821] [2023-11-29 23:11:06,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:11:06,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:11:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:11:07,581 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:11:07,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:11:07,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746347821] [2023-11-29 23:11:07,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746347821] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:11:07,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142790695] [2023-11-29 23:11:07,581 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 23:11:07,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:11:07,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:11:07,584 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:11:07,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 23:11:07,811 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-11-29 23:11:07,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:11:07,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 57 conjunts are in the unsatisfiable core [2023-11-29 23:11:07,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:11:08,436 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 23 treesize of output 1 [2023-11-29 23:11:08,740 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 23:11:08,787 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 23:11:09,336 INFO L349 Elim1Store]: treesize reduction 68, result has 9.3 percent of original size [2023-11-29 23:11:09,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 60 treesize of output 24 [2023-11-29 23:11:09,353 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 1 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:11:09,353 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:11:14,485 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:11:14,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 180 treesize of output 120 [2023-11-29 23:11:14,544 INFO L349 Elim1Store]: treesize reduction 49, result has 58.1 percent of original size [2023-11-29 23:11:14,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 368 treesize of output 385 [2023-11-29 23:11:14,637 INFO L349 Elim1Store]: treesize reduction 54, result has 53.8 percent of original size [2023-11-29 23:11:14,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 318 treesize of output 304 [2023-11-29 23:11:14,702 INFO L349 Elim1Store]: treesize reduction 54, result has 53.8 percent of original size [2023-11-29 23:11:14,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 213 treesize of output 237 [2023-11-29 23:11:17,351 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:11:17,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 181 treesize of output 121 [2023-11-29 23:11:17,379 INFO L349 Elim1Store]: treesize reduction 104, result has 11.1 percent of original size [2023-11-29 23:11:17,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 784 treesize of output 696 [2023-11-29 23:11:17,416 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 23:11:17,416 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 23:11:17,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 23:11:17,417 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 23:11:17,417 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 23:11:17,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 23:11:17,418 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 23:11:17,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 23:11:17,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 214 [2023-11-29 23:11:17,445 INFO L349 Elim1Store]: treesize reduction 104, result has 11.1 percent of original size [2023-11-29 23:11:17,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 251 treesize of output 187 [2023-11-29 23:11:18,812 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:11:18,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142790695] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:11:18,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:11:18,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 31, 28] total 76 [2023-11-29 23:11:18,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671804295] [2023-11-29 23:11:18,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:11:18,813 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2023-11-29 23:11:18,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:11:18,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2023-11-29 23:11:18,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1199, Invalid=4451, Unknown=50, NotChecked=0, Total=5700 [2023-11-29 23:11:18,817 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 137 [2023-11-29 23:11:18,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 930 places, 3076 transitions, 97855 flow. Second operand has 76 states, 76 states have (on average 58.776315789473685) internal successors, (4467), 76 states have internal predecessors, (4467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:11:18,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:11:18,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 137 [2023-11-29 23:11:18,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:11:27,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 23:12:48,971 INFO L124 PetriNetUnfolderBase]: 19767/64140 cut-off events. [2023-11-29 23:12:48,972 INFO L125 PetriNetUnfolderBase]: For 2485976/2501037 co-relation queries the response was YES. [2023-11-29 23:12:49,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536115 conditions, 64140 events. 19767/64140 cut-off events. For 2485976/2501037 co-relation queries the response was YES. Maximal size of possible extension queue 1418. Compared 850755 event pairs, 2033 based on Foata normal form. 1329/60252 useless extension candidates. Maximal degree in co-relation 210665. Up to 25927 conditions per place. [2023-11-29 23:12:49,494 INFO L140 encePairwiseOnDemand]: 103/137 looper letters, 800 selfloop transitions, 434 changer transitions 4499/5849 dead transitions. [2023-11-29 23:12:49,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1175 places, 5849 transitions, 196276 flow [2023-11-29 23:12:49,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 246 states. [2023-11-29 23:12:49,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2023-11-29 23:12:49,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 14877 transitions. [2023-11-29 23:12:49,505 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.4414278084386683 [2023-11-29 23:12:49,505 INFO L72 ComplementDD]: Start complementDD. Operand 246 states and 14877 transitions. [2023-11-29 23:12:49,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 246 states and 14877 transitions. [2023-11-29 23:12:49,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:12:49,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 246 states and 14877 transitions. [2023-11-29 23:12:49,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 247 states, 246 states have (on average 60.47560975609756) internal successors, (14877), 246 states have internal predecessors, (14877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:12:49,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 247 states, 247 states have (on average 137.0) internal successors, (33839), 247 states have internal predecessors, (33839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:12:49,581 INFO L81 ComplementDD]: Finished complementDD. Result has 247 states, 247 states have (on average 137.0) internal successors, (33839), 247 states have internal predecessors, (33839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:12:49,582 INFO L307 CegarLoopForPetriNet]: 122 programPoint places, 1053 predicate places. [2023-11-29 23:12:49,582 INFO L500 AbstractCegarLoop]: Abstraction has has 1175 places, 5849 transitions, 196276 flow [2023-11-29 23:12:49,583 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 58.776315789473685) internal successors, (4467), 76 states have internal predecessors, (4467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:12:49,583 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:12:49,583 INFO L232 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 23:12:49,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-29 23:12:49,787 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2023-11-29 23:12:49,787 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 23:12:49,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:12:49,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1706005806, now seen corresponding path program 13 times [2023-11-29 23:12:49,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:12:49,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027869144] [2023-11-29 23:12:49,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:12:49,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:12:49,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:12:51,088 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:12:51,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:12:51,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027869144] [2023-11-29 23:12:51,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027869144] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:12:51,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976148024] [2023-11-29 23:12:51,088 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 23:12:51,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:12:51,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:12:51,090 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:12:51,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 23:12:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:12:51,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-29 23:12:51,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:12:52,303 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:12:52,304 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:12:52,888 INFO L349 Elim1Store]: treesize reduction 10, result has 88.2 percent of original size [2023-11-29 23:12:52,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 108 treesize of output 104 [2023-11-29 23:12:53,780 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:12:53,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976148024] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:12:53,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:12:53,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 22] total 65 [2023-11-29 23:12:53,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196128648] [2023-11-29 23:12:53,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:12:53,781 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-11-29 23:12:53,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:12:53,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-11-29 23:12:53,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=713, Invalid=3447, Unknown=0, NotChecked=0, Total=4160 [2023-11-29 23:12:53,784 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 137 [2023-11-29 23:12:53,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1175 places, 5849 transitions, 196276 flow. Second operand has 65 states, 65 states have (on average 66.0923076923077) internal successors, (4296), 65 states have internal predecessors, (4296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:12:53,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:12:53,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 137 [2023-11-29 23:12:53,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:13:41,412 INFO L124 PetriNetUnfolderBase]: 15139/52420 cut-off events. [2023-11-29 23:13:41,412 INFO L125 PetriNetUnfolderBase]: For 2236948/2251913 co-relation queries the response was YES. [2023-11-29 23:13:41,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 437178 conditions, 52420 events. 15139/52420 cut-off events. For 2236948/2251913 co-relation queries the response was YES. Maximal size of possible extension queue 1404. Compared 718982 event pairs, 1365 based on Foata normal form. 1587/49597 useless extension candidates. Maximal degree in co-relation 156412. Up to 18819 conditions per place. [2023-11-29 23:13:41,752 INFO L140 encePairwiseOnDemand]: 106/137 looper letters, 370 selfloop transitions, 252 changer transitions 3906/4647 dead transitions. [2023-11-29 23:13:41,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1268 places, 4647 transitions, 163022 flow [2023-11-29 23:13:41,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2023-11-29 23:13:41,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2023-11-29 23:13:41,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 9662 transitions. [2023-11-29 23:13:41,758 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.4863830858293481 [2023-11-29 23:13:41,758 INFO L72 ComplementDD]: Start complementDD. Operand 145 states and 9662 transitions. [2023-11-29 23:13:41,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 145 states and 9662 transitions. [2023-11-29 23:13:41,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:13:41,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 145 states and 9662 transitions. [2023-11-29 23:13:41,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 146 states, 145 states have (on average 66.63448275862069) internal successors, (9662), 145 states have internal predecessors, (9662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:13:41,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 146 states, 146 states have (on average 137.0) internal successors, (20002), 146 states have internal predecessors, (20002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:13:41,773 INFO L81 ComplementDD]: Finished complementDD. Result has 146 states, 146 states have (on average 137.0) internal successors, (20002), 146 states have internal predecessors, (20002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:13:41,774 INFO L307 CegarLoopForPetriNet]: 122 programPoint places, 1146 predicate places. [2023-11-29 23:13:41,774 INFO L500 AbstractCegarLoop]: Abstraction has has 1268 places, 4647 transitions, 163022 flow [2023-11-29 23:13:41,774 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 66.0923076923077) internal successors, (4296), 65 states have internal predecessors, (4296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:13:41,774 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:13:41,775 INFO L232 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 23:13:41,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 23:13:41,979 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:13:41,980 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 23:13:41,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:13:41,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1774361750, now seen corresponding path program 14 times [2023-11-29 23:13:41,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:13:41,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373190268] [2023-11-29 23:13:41,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:13:41,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:13:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:13:43,506 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:13:43,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:13:43,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373190268] [2023-11-29 23:13:43,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373190268] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:13:43,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554523874] [2023-11-29 23:13:43,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 23:13:43,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:13:43,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:13:43,508 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:13:43,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 23:13:43,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 23:13:43,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:13:43,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-29 23:13:43,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:13:44,569 INFO L349 Elim1Store]: treesize reduction 58, result has 10.8 percent of original size [2023-11-29 23:13:44,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 60 treesize of output 24 [2023-11-29 23:13:44,587 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:13:44,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:13:46,050 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:13:46,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 137 treesize of output 283 [2023-11-29 23:13:58,124 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:13:58,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554523874] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:13:58,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:13:58,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22, 22] total 61 [2023-11-29 23:13:58,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929252385] [2023-11-29 23:13:58,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:13:58,125 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-11-29 23:13:58,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:13:58,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-11-29 23:13:58,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=494, Invalid=3166, Unknown=0, NotChecked=0, Total=3660 [2023-11-29 23:13:58,128 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 137 [2023-11-29 23:13:58,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1268 places, 4647 transitions, 163022 flow. Second operand has 61 states, 61 states have (on average 66.29508196721312) internal successors, (4044), 61 states have internal predecessors, (4044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:13:58,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:13:58,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 137 [2023-11-29 23:13:58,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:14:47,596 INFO L124 PetriNetUnfolderBase]: 15967/55657 cut-off events. [2023-11-29 23:14:47,597 INFO L125 PetriNetUnfolderBase]: For 2580413/2596032 co-relation queries the response was YES. [2023-11-29 23:14:47,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484917 conditions, 55657 events. 15967/55657 cut-off events. For 2580413/2596032 co-relation queries the response was YES. Maximal size of possible extension queue 1505. Compared 774262 event pairs, 1505 based on Foata normal form. 1053/52033 useless extension candidates. Maximal degree in co-relation 167627. Up to 20015 conditions per place. [2023-11-29 23:14:47,971 INFO L140 encePairwiseOnDemand]: 105/137 looper letters, 316 selfloop transitions, 159 changer transitions 4352/4918 dead transitions. [2023-11-29 23:14:47,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1373 places, 4918 transitions, 182022 flow [2023-11-29 23:14:47,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-11-29 23:14:47,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2023-11-29 23:14:47,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 7073 transitions. [2023-11-29 23:14:47,976 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.48705412477620164 [2023-11-29 23:14:47,976 INFO L72 ComplementDD]: Start complementDD. Operand 106 states and 7073 transitions. [2023-11-29 23:14:47,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 7073 transitions. [2023-11-29 23:14:47,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:14:47,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 106 states and 7073 transitions. [2023-11-29 23:14:47,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 107 states, 106 states have (on average 66.72641509433963) internal successors, (7073), 106 states have internal predecessors, (7073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:14:47,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 107 states, 107 states have (on average 137.0) internal successors, (14659), 107 states have internal predecessors, (14659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:14:47,988 INFO L81 ComplementDD]: Finished complementDD. Result has 107 states, 107 states have (on average 137.0) internal successors, (14659), 107 states have internal predecessors, (14659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:14:47,988 INFO L307 CegarLoopForPetriNet]: 122 programPoint places, 1251 predicate places. [2023-11-29 23:14:47,988 INFO L500 AbstractCegarLoop]: Abstraction has has 1373 places, 4918 transitions, 182022 flow [2023-11-29 23:14:47,989 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 66.29508196721312) internal successors, (4044), 61 states have internal predecessors, (4044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:14:47,989 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:14:47,989 INFO L232 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 23:14:47,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 23:14:48,193 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:14:48,194 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 23:14:48,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:14:48,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1127121621, now seen corresponding path program 15 times [2023-11-29 23:14:48,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:14:48,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706184672] [2023-11-29 23:14:48,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:14:48,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:14:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:14:52,506 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:14:52,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:14:52,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706184672] [2023-11-29 23:14:52,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706184672] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:14:52,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608598071] [2023-11-29 23:14:52,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 23:14:52,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:14:52,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:14:52,508 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:14:52,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 23:14:52,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-29 23:14:52,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:14:52,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 73 conjunts are in the unsatisfiable core [2023-11-29 23:14:52,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:14:53,551 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 23:14:53,933 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 23:14:54,026 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 23:14:54,743 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:14:54,743 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:14:57,055 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:14:57,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 182 treesize of output 122 [2023-11-29 23:14:57,112 INFO L349 Elim1Store]: treesize reduction 30, result has 64.7 percent of original size [2023-11-29 23:14:57,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 376 treesize of output 378 [2023-11-29 23:14:57,189 INFO L349 Elim1Store]: treesize reduction 30, result has 64.7 percent of original size [2023-11-29 23:14:57,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 324 treesize of output 298 [2023-11-29 23:14:57,257 INFO L349 Elim1Store]: treesize reduction 30, result has 64.7 percent of original size [2023-11-29 23:14:57,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 215 treesize of output 229 [2023-11-29 23:14:58,969 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:14:58,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 183 treesize of output 123 [2023-11-29 23:14:58,990 INFO L349 Elim1Store]: treesize reduction 72, result has 15.3 percent of original size [2023-11-29 23:14:58,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 380 treesize of output 340 [2023-11-29 23:14:59,021 INFO L349 Elim1Store]: treesize reduction 72, result has 15.3 percent of original size [2023-11-29 23:14:59,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 324 treesize of output 256 [2023-11-29 23:14:59,046 INFO L349 Elim1Store]: treesize reduction 72, result has 15.3 percent of original size [2023-11-29 23:14:59,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 215 treesize of output 187 [2023-11-29 23:14:59,171 INFO L209 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-11-29 23:15:00,173 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:15:00,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608598071] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:15:00,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:15:00,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 30] total 81 [2023-11-29 23:15:00,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725112670] [2023-11-29 23:15:00,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:15:00,174 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2023-11-29 23:15:00,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:15:00,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2023-11-29 23:15:00,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1273, Invalid=5154, Unknown=53, NotChecked=0, Total=6480 [2023-11-29 23:15:00,177 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 137 [2023-11-29 23:15:00,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1373 places, 4918 transitions, 182022 flow. Second operand has 81 states, 81 states have (on average 58.53086419753087) internal successors, (4741), 81 states have internal predecessors, (4741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:15:00,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:15:00,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 137 [2023-11-29 23:15:00,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:16:10,403 INFO L124 PetriNetUnfolderBase]: 24586/82724 cut-off events. [2023-11-29 23:16:10,403 INFO L125 PetriNetUnfolderBase]: For 4289595/4312623 co-relation queries the response was YES. [2023-11-29 23:16:10,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 771553 conditions, 82724 events. 24586/82724 cut-off events. For 4289595/4312623 co-relation queries the response was YES. Maximal size of possible extension queue 2249. Compared 1197657 event pairs, 2473 based on Foata normal form. 547/76288 useless extension candidates. Maximal degree in co-relation 241409. Up to 30647 conditions per place. [2023-11-29 23:16:11,106 INFO L140 encePairwiseOnDemand]: 103/137 looper letters, 767 selfloop transitions, 292 changer transitions 6090/7237 dead transitions. [2023-11-29 23:16:11,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1548 places, 7237 transitions, 284151 flow [2023-11-29 23:16:11,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2023-11-29 23:16:11,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2023-11-29 23:16:11,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 10546 transitions. [2023-11-29 23:16:11,113 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.4373755806237558 [2023-11-29 23:16:11,113 INFO L72 ComplementDD]: Start complementDD. Operand 176 states and 10546 transitions. [2023-11-29 23:16:11,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 176 states and 10546 transitions. [2023-11-29 23:16:11,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:16:11,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 176 states and 10546 transitions. [2023-11-29 23:16:11,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 177 states, 176 states have (on average 59.92045454545455) internal successors, (10546), 176 states have internal predecessors, (10546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:16:11,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 177 states, 177 states have (on average 137.0) internal successors, (24249), 177 states have internal predecessors, (24249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:16:11,131 INFO L81 ComplementDD]: Finished complementDD. Result has 177 states, 177 states have (on average 137.0) internal successors, (24249), 177 states have internal predecessors, (24249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:16:11,131 INFO L307 CegarLoopForPetriNet]: 122 programPoint places, 1426 predicate places. [2023-11-29 23:16:11,132 INFO L500 AbstractCegarLoop]: Abstraction has has 1548 places, 7237 transitions, 284151 flow [2023-11-29 23:16:11,132 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 58.53086419753087) internal successors, (4741), 81 states have internal predecessors, (4741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:16:11,132 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:16:11,132 INFO L232 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 23:16:11,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-29 23:16:11,337 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 23:16:11,337 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 23:16:11,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:16:11,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1429811409, now seen corresponding path program 16 times [2023-11-29 23:16:11,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:16:11,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32467592] [2023-11-29 23:16:11,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:16:11,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:16:11,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:16:11,422 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 38 proven. 33 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-11-29 23:16:11,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:16:11,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32467592] [2023-11-29 23:16:11,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32467592] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:16:11,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206664731] [2023-11-29 23:16:11,423 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 23:16:11,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:16:11,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:16:11,424 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:16:11,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 23:16:11,539 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 23:16:11,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:16:11,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 23:16:11,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:16:11,887 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 38 proven. 33 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-11-29 23:16:11,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:16:12,234 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 26 proven. 46 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-29 23:16:12,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206664731] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:16:12,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:16:12,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 9] total 13 [2023-11-29 23:16:12,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343869388] [2023-11-29 23:16:12,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:16:12,235 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 23:16:12,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:16:12,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 23:16:12,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2023-11-29 23:16:12,236 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 137 [2023-11-29 23:16:12,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1548 places, 7237 transitions, 284151 flow. Second operand has 13 states, 13 states have (on average 119.38461538461539) internal successors, (1552), 13 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:16:12,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:16:12,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 137 [2023-11-29 23:16:12,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:17:47,421 INFO L124 PetriNetUnfolderBase]: 29268/98132 cut-off events. [2023-11-29 23:17:47,421 INFO L125 PetriNetUnfolderBase]: For 5571320/5599034 co-relation queries the response was YES. [2023-11-29 23:17:47,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 943486 conditions, 98132 events. 29268/98132 cut-off events. For 5571320/5599034 co-relation queries the response was YES. Maximal size of possible extension queue 2437. Compared 1445888 event pairs, 3051 based on Foata normal form. 994/90947 useless extension candidates. Maximal degree in co-relation 314499. Up to 36677 conditions per place. [2023-11-29 23:17:48,316 INFO L140 encePairwiseOnDemand]: 131/137 looper letters, 674 selfloop transitions, 388 changer transitions 6746/8158 dead transitions. [2023-11-29 23:17:48,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1546 places, 8158 transitions, 340189 flow [2023-11-29 23:17:48,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 23:17:48,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 23:17:48,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 855 transitions. [2023-11-29 23:17:48,317 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8915537017726799 [2023-11-29 23:17:48,318 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 855 transitions. [2023-11-29 23:17:48,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 855 transitions. [2023-11-29 23:17:48,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:17:48,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 855 transitions. [2023-11-29 23:17:48,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 122.14285714285714) internal successors, (855), 7 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:17:48,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 137.0) internal successors, (1096), 8 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:17:48,319 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 137.0) internal successors, (1096), 8 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:17:48,319 INFO L307 CegarLoopForPetriNet]: 122 programPoint places, 1424 predicate places. [2023-11-29 23:17:48,320 INFO L500 AbstractCegarLoop]: Abstraction has has 1546 places, 8158 transitions, 340189 flow [2023-11-29 23:17:48,320 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 119.38461538461539) internal successors, (1552), 13 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:17:48,320 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:17:48,320 INFO L232 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-11-29 23:17:48,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-29 23:17:48,525 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:17:48,525 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 23:17:48,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:17:48,526 INFO L85 PathProgramCache]: Analyzing trace with hash -600694799, now seen corresponding path program 17 times [2023-11-29 23:17:48,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:17:48,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669714446] [2023-11-29 23:17:48,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:17:48,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:17:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:17:50,928 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 4 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:17:50,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:17:50,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669714446] [2023-11-29 23:17:50,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669714446] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:17:50,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700822119] [2023-11-29 23:17:50,928 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 23:17:50,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:17:50,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:17:50,929 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:17:50,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 23:17:51,056 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-11-29 23:17:51,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:17:51,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 63 conjunts are in the unsatisfiable core [2023-11-29 23:17:51,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:17:52,932 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 4 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:17:52,936 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:17:54,073 INFO L349 Elim1Store]: treesize reduction 60, result has 60.8 percent of original size [2023-11-29 23:17:54,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 143 treesize of output 130 [2023-11-29 23:17:55,106 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 11 proven. 149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:17:55,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700822119] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:17:55,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:17:55,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 30, 25] total 80 [2023-11-29 23:17:55,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593434187] [2023-11-29 23:17:55,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:17:55,108 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2023-11-29 23:17:55,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:17:55,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2023-11-29 23:17:55,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=925, Invalid=5395, Unknown=0, NotChecked=0, Total=6320 [2023-11-29 23:17:55,112 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 137 [2023-11-29 23:17:55,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1546 places, 8158 transitions, 340189 flow. Second operand has 80 states, 80 states have (on average 58.9375) internal successors, (4715), 80 states have internal predecessors, (4715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:17:55,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:17:55,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 137 [2023-11-29 23:17:55,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:21:15,279 INFO L124 PetriNetUnfolderBase]: 40520/133921 cut-off events. [2023-11-29 23:21:15,279 INFO L125 PetriNetUnfolderBase]: For 8414573/8451008 co-relation queries the response was YES. [2023-11-29 23:21:15,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1356508 conditions, 133921 events. 40520/133921 cut-off events. For 8414573/8451008 co-relation queries the response was YES. Maximal size of possible extension queue 3004. Compared 2024490 event pairs, 4497 based on Foata normal form. 2066/124979 useless extension candidates. Maximal degree in co-relation 538458. Up to 55281 conditions per place. [2023-11-29 23:21:16,684 INFO L140 encePairwiseOnDemand]: 104/137 looper letters, 1237 selfloop transitions, 835 changer transitions 8686/10846 dead transitions. [2023-11-29 23:21:16,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1783 places, 10846 transitions, 477759 flow [2023-11-29 23:21:16,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2023-11-29 23:21:16,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2023-11-29 23:21:16,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 14261 transitions. [2023-11-29 23:21:16,692 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.4373734895418021 [2023-11-29 23:21:16,692 INFO L72 ComplementDD]: Start complementDD. Operand 238 states and 14261 transitions. [2023-11-29 23:21:16,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 238 states and 14261 transitions. [2023-11-29 23:21:16,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:21:16,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 238 states and 14261 transitions. [2023-11-29 23:21:16,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 239 states, 238 states have (on average 59.92016806722689) internal successors, (14261), 238 states have internal predecessors, (14261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:21:16,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 239 states, 239 states have (on average 137.0) internal successors, (32743), 239 states have internal predecessors, (32743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:21:16,719 INFO L81 ComplementDD]: Finished complementDD. Result has 239 states, 239 states have (on average 137.0) internal successors, (32743), 239 states have internal predecessors, (32743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:21:16,719 INFO L307 CegarLoopForPetriNet]: 122 programPoint places, 1661 predicate places. [2023-11-29 23:21:16,719 INFO L500 AbstractCegarLoop]: Abstraction has has 1783 places, 10846 transitions, 477759 flow [2023-11-29 23:21:16,720 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 58.9375) internal successors, (4715), 80 states have internal predecessors, (4715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:21:16,720 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:21:16,720 INFO L232 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-11-29 23:21:16,726 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 23:21:16,925 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:21:16,925 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 23:21:16,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:21:16,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1898785615, now seen corresponding path program 18 times [2023-11-29 23:21:16,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:21:16,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605766357] [2023-11-29 23:21:16,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:21:16,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:21:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:21:18,599 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 8 proven. 152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:21:18,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:21:18,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605766357] [2023-11-29 23:21:18,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605766357] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:21:18,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235605847] [2023-11-29 23:21:18,600 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 23:21:18,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:21:18,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:21:18,601 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:21:18,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 23:21:18,812 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-11-29 23:21:18,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:21:18,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 63 conjunts are in the unsatisfiable core [2023-11-29 23:21:18,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:21:20,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 23:21:20,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 23:21:20,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 23:21:20,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 23:21:20,723 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 23:21:20,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 23:21:20,724 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 23:21:20,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 23:21:20,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 23:21:20,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 23:21:20,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 23:21:20,727 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 23:21:20,730 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:21:20,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 70 treesize of output 33 [2023-11-29 23:21:20,746 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:21:20,746 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:21:25,094 INFO L349 Elim1Store]: treesize reduction 20, result has 96.3 percent of original size [2023-11-29 23:21:25,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 209 treesize of output 623 [2023-11-29 23:21:25,315 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-11-29 23:21:26,200 WARN L667 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-11-29 23:21:28,925 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-11-29 23:21:29,366 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 23:21:29,576 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:21:29,677 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 23:21:30,043 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-11-29 23:21:30,743 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 23:21:31,065 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-11-29 23:21:32,378 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 23:21:32,743 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 23:21:33,214 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:21:33,403 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 23:21:33,876 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:21:34,071 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:21:34,447 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 23:21:35,121 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:21:35,274 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-11-29 23:21:36,155 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 23:21:36,428 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 23:21:36,690 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:21:36,810 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:21:37,209 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:21:37,563 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:21:37,895 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:21:38,048 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 23:21:38,500 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 23:21:41,461 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:21:42,382 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:21:43,093 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:21:44,099 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 23:21:46,814 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:21:47,701 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:21:47,993 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 23:21:50,326 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:21:51,144 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-11-29 23:21:54,665 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 23:21:57,218 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:21:58,017 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:21:59,369 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 23:22:00,381 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:22:00,731 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:22:01,068 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:22:01,357 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 23:22:01,664 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:22:01,749 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:22:01,930 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:22:02,121 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:22:02,331 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 23:22:02,798 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-11-29 23:22:03,917 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 23:22:04,240 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:22:04,430 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 23:22:04,736 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:22:04,893 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:22:05,385 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:22:05,571 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 23:22:06,002 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:22:06,366 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:22:09,323 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:22:09,957 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:22:10,178 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 23:22:10,809 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:22:11,992 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:22:12,397 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-29 23:22:14,495 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:22:15,185 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-29 23:22:15,845 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. Received shutdown request... [2023-11-29 23:22:19,062 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-29 23:22:19,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 23:22:19,105 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-29 23:22:19,105 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 23:22:19,268 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:22:19,268 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 188 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-15-1 term,while PolyPacSimplificationTermWalker was simplifying 15 xjuncts wrt. a ∧-94-15-5-8-20-4-10-3-5-3-4-3-1 context. [2023-11-29 23:22:19,272 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-29 23:22:19,272 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-29 23:22:19,272 INFO L457 BasicCegarLoop]: Path program histogram: [18, 3, 1, 1, 1, 1, 1] [2023-11-29 23:22:19,275 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 23:22:19,276 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 23:22:19,279 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:22:19 BasicIcfg [2023-11-29 23:22:19,279 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 23:22:19,279 INFO L158 Benchmark]: Toolchain (without parser) took 796257.32ms. Allocated memory was 379.6MB in the beginning and 7.3GB in the end (delta: 6.9GB). Free memory was 336.5MB in the beginning and 2.9GB in the end (delta: -2.6GB). Peak memory consumption was 6.0GB. Max. memory is 16.0GB. [2023-11-29 23:22:19,279 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 379.6MB. Free memory is still 329.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-29 23:22:19,279 INFO L158 Benchmark]: CACSL2BoogieTranslator took 220.34ms. Allocated memory is still 379.6MB. Free memory was 336.5MB in the beginning and 324.7MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-11-29 23:22:19,280 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.20ms. Allocated memory is still 379.6MB. Free memory was 324.7MB in the beginning and 322.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 23:22:19,283 INFO L158 Benchmark]: Boogie Preprocessor took 25.12ms. Allocated memory is still 379.6MB. Free memory was 322.6MB in the beginning and 321.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 23:22:19,283 INFO L158 Benchmark]: RCFGBuilder took 432.11ms. Allocated memory is still 379.6MB. Free memory was 321.0MB in the beginning and 298.3MB in the end (delta: 22.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-11-29 23:22:19,284 INFO L158 Benchmark]: TraceAbstraction took 795537.88ms. Allocated memory was 379.6MB in the beginning and 7.3GB in the end (delta: 6.9GB). Free memory was 297.6MB in the beginning and 2.9GB in the end (delta: -2.7GB). Peak memory consumption was 6.0GB. Max. memory is 16.0GB. [2023-11-29 23:22:19,286 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 379.6MB. Free memory is still 329.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 220.34ms. Allocated memory is still 379.6MB. Free memory was 336.5MB in the beginning and 324.7MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 36.20ms. Allocated memory is still 379.6MB. Free memory was 324.7MB in the beginning and 322.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 25.12ms. Allocated memory is still 379.6MB. Free memory was 322.6MB in the beginning and 321.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 432.11ms. Allocated memory is still 379.6MB. Free memory was 321.0MB in the beginning and 298.3MB in the end (delta: 22.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 795537.88ms. Allocated memory was 379.6MB in the beginning and 7.3GB in the end (delta: 6.9GB). Free memory was 297.6MB in the beginning and 2.9GB in the end (delta: -2.7GB). Peak memory consumption was 6.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 188 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-15-1 term,while PolyPacSimplificationTermWalker was simplifying 15 xjuncts wrt. a ∧-94-15-5-8-20-4-10-3-5-3-4-3-1 context. - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 188 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-15-1 term,while PolyPacSimplificationTermWalker was simplifying 15 xjuncts wrt. a ∧-94-15-5-8-20-4-10-3-5-3-4-3-1 context. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 188 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-15-1 term,while PolyPacSimplificationTermWalker was simplifying 15 xjuncts wrt. a ∧-94-15-5-8-20-4-10-3-5-3-4-3-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 158 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 795.4s, OverallIterations: 26, TraceHistogramMax: 5, PathProgramHistogramMax: 18, EmptinessCheckTime: 0.0s, AutomataDifference: 635.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 210 mSolverCounterUnknown, 20007 SdHoareTripleChecker+Valid, 30.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20007 mSDsluCounter, 15266 SdHoareTripleChecker+Invalid, 27.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 323 IncrementalHoareTripleChecker+Unchecked, 14460 mSDsCounter, 1628 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 42109 IncrementalHoareTripleChecker+Invalid, 44270 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1628 mSolverCounterUnsat, 806 mSDtfsCounter, 42109 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7394 GetRequests, 4950 SyntacticMatches, 3 SemanticMatches, 2441 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 172248 ImplicationChecksByTransitivity, 140.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=477759occurred in iteration=25, InterpolantAutomatonStates: 1758, 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, 1.5s SatisfiabilityAnalysisTime, 90.8s InterpolantComputationTime, 6169 NumberOfCodeBlocks, 6079 NumberOfCodeBlocksAsserted, 71 NumberOfCheckSat, 8822 ConstructedInterpolants, 289 QuantifiedInterpolants, 175779 SizeOfPredicates, 362 NumberOfNonLiveVariables, 5502 ConjunctsInSsa, 685 ConjunctsInUnsatCore, 61 InterpolantComputations, 7 PerfectInterpolantSequences, 739/3581 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