/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/unroll-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-29 23:36:53,787 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 23:36:53,849 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 23:36:53,874 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 23:36:53,874 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 23:36:53,875 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 23:36:53,875 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 23:36:53,875 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 23:36:53,876 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 23:36:53,878 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 23:36:53,879 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 23:36:53,879 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 23:36:53,879 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 23:36:53,880 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 23:36:53,880 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 23:36:53,880 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 23:36:53,880 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 23:36:53,880 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 23:36:53,880 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 23:36:53,881 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 23:36:53,881 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 23:36:53,881 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 23:36:53,881 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 23:36:53,882 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-29 23:36:53,882 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 23:36:53,882 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 23:36:53,882 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 23:36:53,882 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 23:36:53,882 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 23:36:53,882 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 23:36:53,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 23:36:53,883 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 23:36:53,883 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 23:36:53,883 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-11-29 23:36:54,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 23:36:54,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 23:36:54,046 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 23:36:54,046 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 23:36:54,047 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 23:36:54,047 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-3.wvr.c [2023-11-29 23:36:54,940 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 23:36:55,069 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 23:36:55,070 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-3.wvr.c [2023-11-29 23:36:55,075 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6cf75700/f1b78c7da15f485b8057394349952216/FLAG3cf82a75a [2023-11-29 23:36:55,092 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6cf75700/f1b78c7da15f485b8057394349952216 [2023-11-29 23:36:55,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 23:36:55,094 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-29 23:36:55,096 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 23:36:55,096 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 23:36:55,099 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 23:36:55,099 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:36:55" (1/1) ... [2023-11-29 23:36:55,100 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45863edc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:55, skipping insertion in model container [2023-11-29 23:36:55,101 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:36:55" (1/1) ... [2023-11-29 23:36:55,118 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 23:36:55,225 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/unroll-3.wvr.c[2526,2539] [2023-11-29 23:36:55,230 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 23:36:55,235 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 23:36:55,248 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/unroll-3.wvr.c[2526,2539] [2023-11-29 23:36:55,250 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 23:36:55,258 INFO L206 MainTranslator]: Completed translation [2023-11-29 23:36:55,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:55 WrapperNode [2023-11-29 23:36:55,259 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 23:36:55,259 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 23:36:55,259 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 23:36:55,259 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 23:36:55,263 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:55" (1/1) ... [2023-11-29 23:36:55,268 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:55" (1/1) ... [2023-11-29 23:36:55,283 INFO L138 Inliner]: procedures = 24, calls = 34, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 149 [2023-11-29 23:36:55,283 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 23:36:55,284 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 23:36:55,284 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 23:36:55,284 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 23:36:55,289 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:55" (1/1) ... [2023-11-29 23:36:55,289 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:55" (1/1) ... [2023-11-29 23:36:55,291 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:55" (1/1) ... [2023-11-29 23:36:55,291 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:55" (1/1) ... [2023-11-29 23:36:55,295 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:55" (1/1) ... [2023-11-29 23:36:55,297 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:55" (1/1) ... [2023-11-29 23:36:55,298 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:55" (1/1) ... [2023-11-29 23:36:55,299 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:55" (1/1) ... [2023-11-29 23:36:55,301 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 23:36:55,301 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 23:36:55,301 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 23:36:55,301 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 23:36:55,302 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:55" (1/1) ... [2023-11-29 23:36:55,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 23:36:55,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:36:55,325 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 23:36:55,330 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 23:36:55,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 23:36:55,353 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 23:36:55,353 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 23:36:55,353 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 23:36:55,353 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 23:36:55,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 23:36:55,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 23:36:55,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 23:36:55,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 23:36:55,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 23:36:55,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 23:36:55,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 23:36:55,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 23:36:55,355 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 23:36:55,416 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 23:36:55,417 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 23:36:55,616 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 23:36:55,624 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 23:36:55,624 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 23:36:55,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:36:55 BoogieIcfgContainer [2023-11-29 23:36:55,625 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 23:36:55,627 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 23:36:55,627 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 23:36:55,629 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 23:36:55,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:36:55" (1/3) ... [2023-11-29 23:36:55,629 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5362d1b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:36:55, skipping insertion in model container [2023-11-29 23:36:55,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:55" (2/3) ... [2023-11-29 23:36:55,630 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5362d1b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:36:55, skipping insertion in model container [2023-11-29 23:36:55,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:36:55" (3/3) ... [2023-11-29 23:36:55,630 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-3.wvr.c [2023-11-29 23:36:55,642 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 23:36:55,642 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 23:36:55,642 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 23:36:55,700 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 23:36:55,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 187 transitions, 388 flow [2023-11-29 23:36:55,774 INFO L124 PetriNetUnfolderBase]: 15/185 cut-off events. [2023-11-29 23:36:55,774 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 23:36:55,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 185 events. 15/185 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 181 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 111. Up to 2 conditions per place. [2023-11-29 23:36:55,779 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 187 transitions, 388 flow [2023-11-29 23:36:55,782 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 168 places, 176 transitions, 364 flow [2023-11-29 23:36:55,788 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 23:36:55,792 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;@6501a318, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 23:36:55,792 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-29 23:36:55,815 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 23:36:55,816 INFO L124 PetriNetUnfolderBase]: 13/158 cut-off events. [2023-11-29 23:36:55,816 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 23:36:55,816 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:36:55,816 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:36:55,817 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 23:36:55,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:36:55,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1499906581, now seen corresponding path program 1 times [2023-11-29 23:36:55,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:36:55,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782894783] [2023-11-29 23:36:55,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:36:55,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:36:55,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:36:56,241 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 23:36:56,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:36:56,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782894783] [2023-11-29 23:36:56,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782894783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:36:56,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:36:56,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 23:36:56,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611906643] [2023-11-29 23:36:56,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:36:56,249 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 23:36:56,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:36:56,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 23:36:56,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 23:36:56,271 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 187 [2023-11-29 23:36:56,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 176 transitions, 364 flow. Second operand has 8 states, 8 states have (on average 121.625) internal successors, (973), 8 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:56,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:36:56,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 187 [2023-11-29 23:36:56,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:36:56,449 INFO L124 PetriNetUnfolderBase]: 20/299 cut-off events. [2023-11-29 23:36:56,449 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-11-29 23:36:56,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405 conditions, 299 events. 20/299 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 686 event pairs, 7 based on Foata normal form. 32/304 useless extension candidates. Maximal degree in co-relation 217. Up to 50 conditions per place. [2023-11-29 23:36:56,455 INFO L140 encePairwiseOnDemand]: 165/187 looper letters, 48 selfloop transitions, 9 changer transitions 5/168 dead transitions. [2023-11-29 23:36:56,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 168 transitions, 472 flow [2023-11-29 23:36:56,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 23:36:56,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 23:36:56,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1004 transitions. [2023-11-29 23:36:56,470 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6711229946524064 [2023-11-29 23:36:56,471 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1004 transitions. [2023-11-29 23:36:56,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1004 transitions. [2023-11-29 23:36:56,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:36:56,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1004 transitions. [2023-11-29 23:36:56,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 125.5) internal successors, (1004), 8 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:56,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:56,484 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:56,486 INFO L307 CegarLoopForPetriNet]: 168 programPoint places, 7 predicate places. [2023-11-29 23:36:56,486 INFO L500 AbstractCegarLoop]: Abstraction has has 175 places, 168 transitions, 472 flow [2023-11-29 23:36:56,486 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 121.625) internal successors, (973), 8 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:56,486 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:36:56,487 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:36:56,487 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 23:36:56,487 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 23:36:56,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:36:56,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1098094375, now seen corresponding path program 1 times [2023-11-29 23:36:56,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:36:56,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838597665] [2023-11-29 23:36:56,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:36:56,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:36:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:36:56,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:36:56,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:36:56,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838597665] [2023-11-29 23:36:56,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838597665] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:36:56,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:36:56,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 23:36:56,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312023190] [2023-11-29 23:36:56,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:36:56,785 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 23:36:56,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:36:56,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 23:36:56,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 23:36:56,787 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 187 [2023-11-29 23:36:56,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 168 transitions, 472 flow. Second operand has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:56,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:36:56,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 187 [2023-11-29 23:36:56,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:36:56,973 INFO L124 PetriNetUnfolderBase]: 97/668 cut-off events. [2023-11-29 23:36:56,974 INFO L125 PetriNetUnfolderBase]: For 210/215 co-relation queries the response was YES. [2023-11-29 23:36:56,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1108 conditions, 668 events. 97/668 cut-off events. For 210/215 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3432 event pairs, 29 based on Foata normal form. 0/611 useless extension candidates. Maximal degree in co-relation 793. Up to 118 conditions per place. [2023-11-29 23:36:56,977 INFO L140 encePairwiseOnDemand]: 175/187 looper letters, 71 selfloop transitions, 5 changer transitions 11/202 dead transitions. [2023-11-29 23:36:56,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 202 transitions, 773 flow [2023-11-29 23:36:56,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 23:36:56,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 23:36:56,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1177 transitions. [2023-11-29 23:36:56,980 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6993464052287581 [2023-11-29 23:36:56,980 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1177 transitions. [2023-11-29 23:36:56,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1177 transitions. [2023-11-29 23:36:56,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:36:56,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1177 transitions. [2023-11-29 23:36:56,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 130.77777777777777) internal successors, (1177), 9 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:56,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 187.0) internal successors, (1870), 10 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:56,986 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 187.0) internal successors, (1870), 10 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:56,986 INFO L307 CegarLoopForPetriNet]: 168 programPoint places, 15 predicate places. [2023-11-29 23:36:56,986 INFO L500 AbstractCegarLoop]: Abstraction has has 183 places, 202 transitions, 773 flow [2023-11-29 23:36:56,987 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:56,987 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:36:56,987 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:36:56,988 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 23:36:56,988 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 23:36:56,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:36:56,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1598442881, now seen corresponding path program 1 times [2023-11-29 23:36:56,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:36:56,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019879705] [2023-11-29 23:36:56,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:36:56,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:36:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:36:57,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:36:57,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:36:57,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019879705] [2023-11-29 23:36:57,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019879705] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:36:57,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266916905] [2023-11-29 23:36:57,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:36:57,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:36:57,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:36:57,177 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 23:36:57,196 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 23:36:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:36:57,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 23:36:57,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:36:57,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:36:57,363 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:36:57,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:36:57,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266916905] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 23:36:57,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 23:36:57,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 7 [2023-11-29 23:36:57,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001395995] [2023-11-29 23:36:57,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:36:57,453 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 23:36:57,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:36:57,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 23:36:57,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-29 23:36:57,455 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 187 [2023-11-29 23:36:57,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 202 transitions, 773 flow. Second operand has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:57,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:36:57,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 187 [2023-11-29 23:36:57,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:36:57,577 INFO L124 PetriNetUnfolderBase]: 176/989 cut-off events. [2023-11-29 23:36:57,577 INFO L125 PetriNetUnfolderBase]: For 571/579 co-relation queries the response was YES. [2023-11-29 23:36:57,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1799 conditions, 989 events. 176/989 cut-off events. For 571/579 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 6049 event pairs, 42 based on Foata normal form. 0/882 useless extension candidates. Maximal degree in co-relation 1176. Up to 158 conditions per place. [2023-11-29 23:36:57,583 INFO L140 encePairwiseOnDemand]: 182/187 looper letters, 29 selfloop transitions, 5 changer transitions 11/214 dead transitions. [2023-11-29 23:36:57,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 214 transitions, 895 flow [2023-11-29 23:36:57,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 23:36:57,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 23:36:57,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 655 transitions. [2023-11-29 23:36:57,585 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8756684491978609 [2023-11-29 23:36:57,585 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 655 transitions. [2023-11-29 23:36:57,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 655 transitions. [2023-11-29 23:36:57,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:36:57,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 655 transitions. [2023-11-29 23:36:57,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 163.75) internal successors, (655), 4 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:57,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:57,588 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:57,589 INFO L307 CegarLoopForPetriNet]: 168 programPoint places, 18 predicate places. [2023-11-29 23:36:57,589 INFO L500 AbstractCegarLoop]: Abstraction has has 186 places, 214 transitions, 895 flow [2023-11-29 23:36:57,590 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:57,590 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:36:57,591 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:36:57,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 23:36:57,795 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:36:57,796 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 23:36:57,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:36:57,797 INFO L85 PathProgramCache]: Analyzing trace with hash -617538153, now seen corresponding path program 2 times [2023-11-29 23:36:57,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:36:57,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686773138] [2023-11-29 23:36:57,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:36:57,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:36:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:36:57,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:36:57,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:36:57,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686773138] [2023-11-29 23:36:57,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686773138] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:36:57,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:36:57,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 23:36:57,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203500739] [2023-11-29 23:36:57,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:36:57,889 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 23:36:57,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:36:57,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 23:36:57,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 23:36:57,891 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 187 [2023-11-29 23:36:57,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 214 transitions, 895 flow. Second operand has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:57,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:36:57,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 187 [2023-11-29 23:36:57,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:36:58,070 INFO L124 PetriNetUnfolderBase]: 201/1117 cut-off events. [2023-11-29 23:36:58,070 INFO L125 PetriNetUnfolderBase]: For 940/968 co-relation queries the response was YES. [2023-11-29 23:36:58,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2330 conditions, 1117 events. 201/1117 cut-off events. For 940/968 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6812 event pairs, 45 based on Foata normal form. 2/1000 useless extension candidates. Maximal degree in co-relation 1525. Up to 200 conditions per place. [2023-11-29 23:36:58,075 INFO L140 encePairwiseOnDemand]: 181/187 looper letters, 44 selfloop transitions, 6 changer transitions 14/233 dead transitions. [2023-11-29 23:36:58,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 233 transitions, 1128 flow [2023-11-29 23:36:58,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 23:36:58,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 23:36:58,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 809 transitions. [2023-11-29 23:36:58,077 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8652406417112299 [2023-11-29 23:36:58,077 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 809 transitions. [2023-11-29 23:36:58,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 809 transitions. [2023-11-29 23:36:58,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:36:58,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 809 transitions. [2023-11-29 23:36:58,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 161.8) internal successors, (809), 5 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:58,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:58,080 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:58,080 INFO L307 CegarLoopForPetriNet]: 168 programPoint places, 22 predicate places. [2023-11-29 23:36:58,080 INFO L500 AbstractCegarLoop]: Abstraction has has 190 places, 233 transitions, 1128 flow [2023-11-29 23:36:58,080 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:58,081 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:36:58,081 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:36:58,081 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 23:36:58,081 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 23:36:58,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:36:58,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1723687009, now seen corresponding path program 3 times [2023-11-29 23:36:58,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:36:58,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930456890] [2023-11-29 23:36:58,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:36:58,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:36:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:36:58,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:36:58,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:36:58,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930456890] [2023-11-29 23:36:58,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930456890] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:36:58,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:36:58,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 23:36:58,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562121442] [2023-11-29 23:36:58,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:36:58,174 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 23:36:58,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:36:58,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 23:36:58,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 23:36:58,175 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 187 [2023-11-29 23:36:58,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 233 transitions, 1128 flow. Second operand has 5 states, 5 states have (on average 155.8) internal successors, (779), 5 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:58,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:36:58,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 187 [2023-11-29 23:36:58,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:36:58,350 INFO L124 PetriNetUnfolderBase]: 307/1519 cut-off events. [2023-11-29 23:36:58,351 INFO L125 PetriNetUnfolderBase]: For 2013/2181 co-relation queries the response was YES. [2023-11-29 23:36:58,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3544 conditions, 1519 events. 307/1519 cut-off events. For 2013/2181 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 9938 event pairs, 85 based on Foata normal form. 5/1364 useless extension candidates. Maximal degree in co-relation 3044. Up to 258 conditions per place. [2023-11-29 23:36:58,359 INFO L140 encePairwiseOnDemand]: 179/187 looper letters, 83 selfloop transitions, 10 changer transitions 19/278 dead transitions. [2023-11-29 23:36:58,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 278 transitions, 1627 flow [2023-11-29 23:36:58,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 23:36:58,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 23:36:58,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 819 transitions. [2023-11-29 23:36:58,361 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8759358288770054 [2023-11-29 23:36:58,361 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 819 transitions. [2023-11-29 23:36:58,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 819 transitions. [2023-11-29 23:36:58,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:36:58,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 819 transitions. [2023-11-29 23:36:58,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 163.8) internal successors, (819), 5 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:58,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:58,365 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:58,367 INFO L307 CegarLoopForPetriNet]: 168 programPoint places, 26 predicate places. [2023-11-29 23:36:58,367 INFO L500 AbstractCegarLoop]: Abstraction has has 194 places, 278 transitions, 1627 flow [2023-11-29 23:36:58,369 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.8) internal successors, (779), 5 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:58,369 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:36:58,370 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:36:58,370 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 23:36:58,371 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 23:36:58,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:36:58,371 INFO L85 PathProgramCache]: Analyzing trace with hash 2106355955, now seen corresponding path program 4 times [2023-11-29 23:36:58,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:36:58,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970129779] [2023-11-29 23:36:58,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:36:58,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:36:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:36:58,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:36:58,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:36:58,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970129779] [2023-11-29 23:36:58,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970129779] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:36:58,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:36:58,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 23:36:58,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248022001] [2023-11-29 23:36:58,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:36:58,492 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 23:36:58,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:36:58,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 23:36:58,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-29 23:36:58,493 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 187 [2023-11-29 23:36:58,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 278 transitions, 1627 flow. Second operand has 6 states, 6 states have (on average 155.33333333333334) internal successors, (932), 6 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:58,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:36:58,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 187 [2023-11-29 23:36:58,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:36:58,672 INFO L124 PetriNetUnfolderBase]: 304/1545 cut-off events. [2023-11-29 23:36:58,672 INFO L125 PetriNetUnfolderBase]: For 2608/2848 co-relation queries the response was YES. [2023-11-29 23:36:58,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4023 conditions, 1545 events. 304/1545 cut-off events. For 2608/2848 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 10192 event pairs, 84 based on Foata normal form. 14/1407 useless extension candidates. Maximal degree in co-relation 2954. Up to 309 conditions per place. [2023-11-29 23:36:58,682 INFO L140 encePairwiseOnDemand]: 179/187 looper letters, 81 selfloop transitions, 18 changer transitions 19/284 dead transitions. [2023-11-29 23:36:58,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 284 transitions, 1852 flow [2023-11-29 23:36:58,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 23:36:58,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 23:36:58,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 973 transitions. [2023-11-29 23:36:58,684 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8672014260249554 [2023-11-29 23:36:58,684 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 973 transitions. [2023-11-29 23:36:58,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 973 transitions. [2023-11-29 23:36:58,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:36:58,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 973 transitions. [2023-11-29 23:36:58,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 162.16666666666666) internal successors, (973), 6 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:58,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:58,688 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:58,690 INFO L307 CegarLoopForPetriNet]: 168 programPoint places, 31 predicate places. [2023-11-29 23:36:58,690 INFO L500 AbstractCegarLoop]: Abstraction has has 199 places, 284 transitions, 1852 flow [2023-11-29 23:36:58,690 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 155.33333333333334) internal successors, (932), 6 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:58,690 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:36:58,690 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:36:58,691 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 23:36:58,691 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 23:36:58,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:36:58,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1822399700, now seen corresponding path program 1 times [2023-11-29 23:36:58,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:36:58,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854617545] [2023-11-29 23:36:58,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:36:58,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:36:58,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:36:58,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:36:58,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:36:58,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854617545] [2023-11-29 23:36:58,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854617545] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:36:58,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:36:58,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 23:36:58,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596376239] [2023-11-29 23:36:58,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:36:58,785 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 23:36:58,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:36:58,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 23:36:58,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 23:36:58,786 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 187 [2023-11-29 23:36:58,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 284 transitions, 1852 flow. Second operand has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:58,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:36:58,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 187 [2023-11-29 23:36:58,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:36:58,991 INFO L124 PetriNetUnfolderBase]: 288/1428 cut-off events. [2023-11-29 23:36:58,991 INFO L125 PetriNetUnfolderBase]: For 3301/3686 co-relation queries the response was YES. [2023-11-29 23:36:58,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4029 conditions, 1428 events. 288/1428 cut-off events. For 3301/3686 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9028 event pairs, 91 based on Foata normal form. 19/1307 useless extension candidates. Maximal degree in co-relation 3493. Up to 303 conditions per place. [2023-11-29 23:36:59,000 INFO L140 encePairwiseOnDemand]: 181/187 looper letters, 57 selfloop transitions, 11 changer transitions 28/284 dead transitions. [2023-11-29 23:36:59,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 284 transitions, 2003 flow [2023-11-29 23:36:59,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 23:36:59,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 23:36:59,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 826 transitions. [2023-11-29 23:36:59,002 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8834224598930481 [2023-11-29 23:36:59,002 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 826 transitions. [2023-11-29 23:36:59,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 826 transitions. [2023-11-29 23:36:59,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:36:59,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 826 transitions. [2023-11-29 23:36:59,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 165.2) internal successors, (826), 5 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:59,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:59,006 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:59,006 INFO L307 CegarLoopForPetriNet]: 168 programPoint places, 35 predicate places. [2023-11-29 23:36:59,006 INFO L500 AbstractCegarLoop]: Abstraction has has 203 places, 284 transitions, 2003 flow [2023-11-29 23:36:59,007 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:59,007 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:36:59,007 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:36:59,007 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 23:36:59,007 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 23:36:59,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:36:59,007 INFO L85 PathProgramCache]: Analyzing trace with hash 655985554, now seen corresponding path program 2 times [2023-11-29 23:36:59,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:36:59,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572543363] [2023-11-29 23:36:59,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:36:59,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:36:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:36:59,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:36:59,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:36:59,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572543363] [2023-11-29 23:36:59,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572543363] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:36:59,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591204458] [2023-11-29 23:36:59,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 23:36:59,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:36:59,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:36:59,156 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 23:36:59,180 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 23:36:59,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 23:36:59,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:36:59,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 23:36:59,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:36:59,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:36:59,345 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:36:59,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:36:59,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591204458] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 23:36:59,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 23:36:59,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 7 [2023-11-29 23:36:59,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852514268] [2023-11-29 23:36:59,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:36:59,427 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 23:36:59,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:36:59,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 23:36:59,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-29 23:36:59,428 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 187 [2023-11-29 23:36:59,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 284 transitions, 2003 flow. Second operand has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:59,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:36:59,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 187 [2023-11-29 23:36:59,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:36:59,586 INFO L124 PetriNetUnfolderBase]: 301/1536 cut-off events. [2023-11-29 23:36:59,587 INFO L125 PetriNetUnfolderBase]: For 4062/4355 co-relation queries the response was YES. [2023-11-29 23:36:59,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4566 conditions, 1536 events. 301/1536 cut-off events. For 4062/4355 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9941 event pairs, 99 based on Foata normal form. 6/1393 useless extension candidates. Maximal degree in co-relation 3505. Up to 320 conditions per place. [2023-11-29 23:36:59,595 INFO L140 encePairwiseOnDemand]: 182/187 looper letters, 56 selfloop transitions, 24 changer transitions 28/296 dead transitions. [2023-11-29 23:36:59,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 296 transitions, 2346 flow [2023-11-29 23:36:59,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 23:36:59,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 23:36:59,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 667 transitions. [2023-11-29 23:36:59,597 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8917112299465241 [2023-11-29 23:36:59,597 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 667 transitions. [2023-11-29 23:36:59,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 667 transitions. [2023-11-29 23:36:59,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:36:59,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 667 transitions. [2023-11-29 23:36:59,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 166.75) internal successors, (667), 4 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:59,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:59,600 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:59,601 INFO L307 CegarLoopForPetriNet]: 168 programPoint places, 38 predicate places. [2023-11-29 23:36:59,601 INFO L500 AbstractCegarLoop]: Abstraction has has 206 places, 296 transitions, 2346 flow [2023-11-29 23:36:59,602 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:59,602 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:36:59,602 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:36:59,609 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 23:36:59,807 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 23:36:59,807 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 23:36:59,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:36:59,808 INFO L85 PathProgramCache]: Analyzing trace with hash 575341714, now seen corresponding path program 3 times [2023-11-29 23:36:59,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:36:59,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855529649] [2023-11-29 23:36:59,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:36:59,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:36:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:36:59,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:36:59,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:36:59,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855529649] [2023-11-29 23:36:59,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855529649] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:36:59,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75076387] [2023-11-29 23:36:59,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 23:36:59,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:36:59,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:36:59,965 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 23:37:00,016 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 23:37:00,106 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 23:37:00,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:37:00,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 23:37:00,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:37:00,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:37:00,287 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:37:00,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:37:00,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75076387] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:37:00,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:37:00,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2023-11-29 23:37:00,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511851739] [2023-11-29 23:37:00,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:37:00,395 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 23:37:00,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:37:00,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 23:37:00,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-11-29 23:37:00,398 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 187 [2023-11-29 23:37:00,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 296 transitions, 2346 flow. Second operand has 9 states, 9 states have (on average 156.55555555555554) internal successors, (1409), 9 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:37:00,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:37:00,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 187 [2023-11-29 23:37:00,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:37:00,669 INFO L124 PetriNetUnfolderBase]: 290/1472 cut-off events. [2023-11-29 23:37:00,670 INFO L125 PetriNetUnfolderBase]: For 4132/4559 co-relation queries the response was YES. [2023-11-29 23:37:00,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4677 conditions, 1472 events. 290/1472 cut-off events. For 4132/4559 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 9158 event pairs, 71 based on Foata normal form. 30/1363 useless extension candidates. Maximal degree in co-relation 3852. Up to 285 conditions per place. [2023-11-29 23:37:00,683 INFO L140 encePairwiseOnDemand]: 179/187 looper letters, 89 selfloop transitions, 30 changer transitions 27/306 dead transitions. [2023-11-29 23:37:00,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 306 transitions, 2719 flow [2023-11-29 23:37:00,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 23:37:00,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 23:37:00,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1297 transitions. [2023-11-29 23:37:00,687 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8669786096256684 [2023-11-29 23:37:00,688 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1297 transitions. [2023-11-29 23:37:00,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1297 transitions. [2023-11-29 23:37:00,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:37:00,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1297 transitions. [2023-11-29 23:37:00,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 162.125) internal successors, (1297), 8 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:37:00,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:37:00,695 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:37:00,696 INFO L307 CegarLoopForPetriNet]: 168 programPoint places, 44 predicate places. [2023-11-29 23:37:00,696 INFO L500 AbstractCegarLoop]: Abstraction has has 212 places, 306 transitions, 2719 flow [2023-11-29 23:37:00,697 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 156.55555555555554) internal successors, (1409), 9 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:37:00,697 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:37:00,697 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:37:00,716 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 23:37:00,903 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:37:00,904 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 23:37:00,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:37:00,904 INFO L85 PathProgramCache]: Analyzing trace with hash -733897436, now seen corresponding path program 1 times [2023-11-29 23:37:00,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:37:00,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962717812] [2023-11-29 23:37:00,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:37:00,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:37:00,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:37:01,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:37:01,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:37:01,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962717812] [2023-11-29 23:37:01,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962717812] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:37:01,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057661337] [2023-11-29 23:37:01,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:37:01,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:37:01,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:37:01,267 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 23:37:01,272 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 23:37:01,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:37:01,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-29 23:37:01,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:37:01,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 23:37:02,064 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:37:02,064 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:37:02,429 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-29 23:37:02,429 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 19 treesize of output 7 [2023-11-29 23:37:03,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:37:03,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057661337] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:37:03,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:37:03,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 23, 18] total 41 [2023-11-29 23:37:03,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074040919] [2023-11-29 23:37:03,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:37:03,100 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-29 23:37:03,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:37:03,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-29 23:37:03,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1485, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 23:37:03,104 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 187 [2023-11-29 23:37:03,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 306 transitions, 2719 flow. Second operand has 41 states, 41 states have (on average 65.97560975609755) internal successors, (2705), 41 states have internal predecessors, (2705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:37:03,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:37:03,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 187 [2023-11-29 23:37:03,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:37:15,116 INFO L124 PetriNetUnfolderBase]: 9716/20255 cut-off events. [2023-11-29 23:37:15,117 INFO L125 PetriNetUnfolderBase]: For 64068/64418 co-relation queries the response was YES. [2023-11-29 23:37:15,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70350 conditions, 20255 events. 9716/20255 cut-off events. For 64068/64418 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 168587 event pairs, 690 based on Foata normal form. 43/18876 useless extension candidates. Maximal degree in co-relation 58446. Up to 3633 conditions per place. [2023-11-29 23:37:15,220 INFO L140 encePairwiseOnDemand]: 118/187 looper letters, 911 selfloop transitions, 317 changer transitions 711/2021 dead transitions. [2023-11-29 23:37:15,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 2021 transitions, 16301 flow [2023-11-29 23:37:15,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2023-11-29 23:37:15,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2023-11-29 23:37:15,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 13419 transitions. [2023-11-29 23:37:15,238 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.3624210014584346 [2023-11-29 23:37:15,238 INFO L72 ComplementDD]: Start complementDD. Operand 198 states and 13419 transitions. [2023-11-29 23:37:15,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 198 states and 13419 transitions. [2023-11-29 23:37:15,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:37:15,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 198 states and 13419 transitions. [2023-11-29 23:37:15,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 199 states, 198 states have (on average 67.77272727272727) internal successors, (13419), 198 states have internal predecessors, (13419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:37:15,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 199 states, 199 states have (on average 187.0) internal successors, (37213), 199 states have internal predecessors, (37213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:37:15,306 INFO L81 ComplementDD]: Finished complementDD. Result has 199 states, 199 states have (on average 187.0) internal successors, (37213), 199 states have internal predecessors, (37213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:37:15,307 INFO L307 CegarLoopForPetriNet]: 168 programPoint places, 241 predicate places. [2023-11-29 23:37:15,307 INFO L500 AbstractCegarLoop]: Abstraction has has 409 places, 2021 transitions, 16301 flow [2023-11-29 23:37:15,308 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 65.97560975609755) internal successors, (2705), 41 states have internal predecessors, (2705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:37:15,308 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:37:15,308 INFO L232 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:37:15,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 23:37:15,513 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:37:15,513 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 23:37:15,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:37:15,514 INFO L85 PathProgramCache]: Analyzing trace with hash -929193352, now seen corresponding path program 2 times [2023-11-29 23:37:15,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:37:15,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862940688] [2023-11-29 23:37:15,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:37:15,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:37:15,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:37:20,587 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 13 refuted. 2 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:37:20,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:37:20,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862940688] [2023-11-29 23:37:20,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862940688] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:37:20,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48795187] [2023-11-29 23:37:20,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 23:37:20,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:37:20,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:37:20,588 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 23:37:20,590 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 23:37:20,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 23:37:20,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:37:20,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-29 23:37:20,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:37:20,959 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 23:37:21,149 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 23:37:21,187 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 23:37:21,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 23:37:21,642 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:37:21,642 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:37:22,775 WARN L854 $PredicateComparison]: unable to prove that (forall ((~x1~0 Int) (~x2~0 Int) (v_ArrVal_193 (Array Int Int)) (v_ArrVal_192 (Array Int Int))) (or (< c_~size~0 (+ ~x1~0 1)) (< ~x1~0 0) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_192) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_193) c_~f~0.base))) (= (select .cse0 (+ (* ~x1~0 4) c_~f~0.offset)) (select .cse0 (+ c_~f~0.offset (* ~x2~0 4))))) (< c_~size~0 (+ ~x2~0 1)) (< ~x2~0 0))) is different from false [2023-11-29 23:37:23,498 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:37:23,498 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 55 treesize of output 44 [2023-11-29 23:37:23,507 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-29 23:37:23,507 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 198 treesize of output 169 [2023-11-29 23:37:23,516 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 23:37:23,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-11-29 23:37:23,522 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-29 23:37:23,523 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 44 treesize of output 20 [2023-11-29 23:37:23,744 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:37:23,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48795187] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:37:23,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:37:23,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 29, 26] total 58 [2023-11-29 23:37:23,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101723319] [2023-11-29 23:37:23,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:37:23,745 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-11-29 23:37:23,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:37:23,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-11-29 23:37:23,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=2907, Unknown=14, NotChecked=110, Total=3306 [2023-11-29 23:37:23,749 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 187 [2023-11-29 23:37:23,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 2021 transitions, 16301 flow. Second operand has 58 states, 58 states have (on average 51.793103448275865) internal successors, (3004), 58 states have internal predecessors, (3004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:37:23,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:37:23,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 187 [2023-11-29 23:37:23,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:37:42,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 23:38:06,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 23:38:09,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 23:38:47,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 23:39:00,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 23:39:03,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 23:39:18,919 INFO L124 PetriNetUnfolderBase]: 41362/76196 cut-off events. [2023-11-29 23:39:18,920 INFO L125 PetriNetUnfolderBase]: For 197427/199100 co-relation queries the response was YES. [2023-11-29 23:39:19,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298663 conditions, 76196 events. 41362/76196 cut-off events. For 197427/199100 co-relation queries the response was YES. Maximal size of possible extension queue 958. Compared 693404 event pairs, 1942 based on Foata normal form. 236/71105 useless extension candidates. Maximal degree in co-relation 223459. Up to 20227 conditions per place. [2023-11-29 23:39:19,567 INFO L140 encePairwiseOnDemand]: 112/187 looper letters, 3025 selfloop transitions, 2135 changer transitions 3459/8692 dead transitions. [2023-11-29 23:39:19,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 847 places, 8692 transitions, 80956 flow [2023-11-29 23:39:19,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 439 states. [2023-11-29 23:39:19,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2023-11-29 23:39:19,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 23974 transitions. [2023-11-29 23:39:19,608 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.2920346436358764 [2023-11-29 23:39:19,608 INFO L72 ComplementDD]: Start complementDD. Operand 439 states and 23974 transitions. [2023-11-29 23:39:19,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 439 states and 23974 transitions. [2023-11-29 23:39:19,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:39:19,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 439 states and 23974 transitions. [2023-11-29 23:39:19,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 440 states, 439 states have (on average 54.61047835990888) internal successors, (23974), 439 states have internal predecessors, (23974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:39:19,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 440 states, 440 states have (on average 187.0) internal successors, (82280), 440 states have internal predecessors, (82280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:39:19,743 INFO L81 ComplementDD]: Finished complementDD. Result has 440 states, 440 states have (on average 187.0) internal successors, (82280), 440 states have internal predecessors, (82280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:39:19,744 INFO L307 CegarLoopForPetriNet]: 168 programPoint places, 679 predicate places. [2023-11-29 23:39:19,744 INFO L500 AbstractCegarLoop]: Abstraction has has 847 places, 8692 transitions, 80956 flow [2023-11-29 23:39:19,745 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 51.793103448275865) internal successors, (3004), 58 states have internal predecessors, (3004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:39:19,745 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:39:19,745 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:39:19,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 23:39:19,953 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 23:39:19,954 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 23:39:19,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:39:19,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1650674598, now seen corresponding path program 3 times [2023-11-29 23:39:19,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:39:19,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922384997] [2023-11-29 23:39:19,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:39:19,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:39:20,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:39:21,567 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:39:21,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:39:21,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922384997] [2023-11-29 23:39:21,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922384997] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:39:21,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658859043] [2023-11-29 23:39:21,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 23:39:21,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:39:21,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:39:21,568 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 23:39:21,569 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 23:39:21,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 23:39:21,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:39:21,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 23:39:21,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:39:22,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 23:39:22,621 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 23:39:22,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:39:22,863 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-29 23:39:22,864 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 19 treesize of output 7 [2023-11-29 23:39:23,470 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 23:39:23,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658859043] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:39:23,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:39:23,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 25, 20] total 69 [2023-11-29 23:39:23,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415002878] [2023-11-29 23:39:23,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:39:23,471 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-11-29 23:39:23,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:39:23,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-11-29 23:39:23,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=436, Invalid=4256, Unknown=0, NotChecked=0, Total=4692 [2023-11-29 23:39:23,477 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 187 [2023-11-29 23:39:23,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 847 places, 8692 transitions, 80956 flow. Second operand has 69 states, 69 states have (on average 66.34782608695652) internal successors, (4578), 69 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:39:23,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:39:23,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 187 [2023-11-29 23:39:23,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:41:27,390 INFO L124 PetriNetUnfolderBase]: 91245/168928 cut-off events. [2023-11-29 23:41:27,390 INFO L125 PetriNetUnfolderBase]: For 466731/471510 co-relation queries the response was YES. [2023-11-29 23:41:27,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 789095 conditions, 168928 events. 91245/168928 cut-off events. For 466731/471510 co-relation queries the response was YES. Maximal size of possible extension queue 1994. Compared 1702591 event pairs, 2679 based on Foata normal form. 354/157079 useless extension candidates. Maximal degree in co-relation 684149. Up to 49676 conditions per place. [2023-11-29 23:41:28,567 INFO L140 encePairwiseOnDemand]: 122/187 looper letters, 8219 selfloop transitions, 6349 changer transitions 11392/27085 dead transitions. [2023-11-29 23:41:28,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1194 places, 27085 transitions, 254320 flow [2023-11-29 23:41:28,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 348 states. [2023-11-29 23:41:28,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2023-11-29 23:41:28,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 23845 transitions. [2023-11-29 23:41:28,584 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.3664177269653943 [2023-11-29 23:41:28,584 INFO L72 ComplementDD]: Start complementDD. Operand 348 states and 23845 transitions. [2023-11-29 23:41:28,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 348 states and 23845 transitions. [2023-11-29 23:41:28,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:41:28,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 348 states and 23845 transitions. [2023-11-29 23:41:28,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 349 states, 348 states have (on average 68.52011494252874) internal successors, (23845), 348 states have internal predecessors, (23845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:41:28,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 349 states, 349 states have (on average 187.0) internal successors, (65263), 349 states have internal predecessors, (65263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:41:28,659 INFO L81 ComplementDD]: Finished complementDD. Result has 349 states, 349 states have (on average 187.0) internal successors, (65263), 349 states have internal predecessors, (65263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:41:28,660 INFO L307 CegarLoopForPetriNet]: 168 programPoint places, 1026 predicate places. [2023-11-29 23:41:28,660 INFO L500 AbstractCegarLoop]: Abstraction has has 1194 places, 27085 transitions, 254320 flow [2023-11-29 23:41:28,661 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 66.34782608695652) internal successors, (4578), 69 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:41:28,661 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:41:28,661 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:41:28,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 23:41:28,865 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:41:28,866 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 23:41:28,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:41:28,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1021263544, now seen corresponding path program 4 times [2023-11-29 23:41:28,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:41:28,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49428818] [2023-11-29 23:41:28,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:41:28,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:41:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:41:29,783 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 10 proven. 17 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 23:41:29,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:41:29,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49428818] [2023-11-29 23:41:29,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49428818] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:41:29,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778688444] [2023-11-29 23:41:29,783 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 23:41:29,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:41:29,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:41:29,784 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 23:41:29,786 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 23:41:29,881 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 23:41:29,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:41:29,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-29 23:41:29,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:41:30,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 23:41:30,524 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 23:41:30,524 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:41:30,802 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-29 23:41:30,803 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 19 treesize of output 7 [2023-11-29 23:41:31,232 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 23:41:31,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778688444] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:41:31,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:41:31,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 20, 20] total 53 [2023-11-29 23:41:31,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850042648] [2023-11-29 23:41:31,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:41:31,234 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-11-29 23:41:31,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:41:31,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-11-29 23:41:31,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=2495, Unknown=0, NotChecked=0, Total=2756 [2023-11-29 23:41:31,238 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 187 [2023-11-29 23:41:31,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1194 places, 27085 transitions, 254320 flow. Second operand has 53 states, 53 states have (on average 67.56603773584905) internal successors, (3581), 53 states have internal predecessors, (3581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:41:31,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:41:31,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 187 [2023-11-29 23:41:31,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-11-29 23:50:24,201 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 23:50:24,201 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-29 23:50:24,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2023-11-29 23:50:24,969 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-29 23:50:24,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 23:50:25,172 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:50:25,172 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (53states, 63/187 universal loopers) in iteration 13,while PetriNetUnfolder was constructing finite prefix that currently has 1163380 conditions, 211986 events (114947/211985 cut-off events. For 681174/688168 co-relation queries the response was YES. Maximal size of possible extension queue 3564. Compared 2339521 event pairs, 3995 based on Foata normal form. 450/200447 useless extension candidates. Maximal degree in co-relation 1032398. Up to 105290 conditions per place.). [2023-11-29 23:50:25,174 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-29 23:50:25,174 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-29 23:50:25,174 INFO L457 BasicCegarLoop]: Path program histogram: [4, 4, 3, 1, 1] [2023-11-29 23:50:25,176 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 23:50:25,176 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 23:50:25,178 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:50:25 BasicIcfg [2023-11-29 23:50:25,178 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 23:50:25,179 INFO L158 Benchmark]: Toolchain (without parser) took 810084.68ms. Allocated memory was 576.7MB in the beginning and 5.5GB in the end (delta: 4.9GB). Free memory was 531.7MB in the beginning and 1.8GB in the end (delta: -1.3GB). Peak memory consumption was 4.8GB. Max. memory is 16.0GB. [2023-11-29 23:50:25,179 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 379.6MB. Free memory is still 328.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-29 23:50:25,179 INFO L158 Benchmark]: CACSL2BoogieTranslator took 162.87ms. Allocated memory is still 576.7MB. Free memory was 531.7MB in the beginning and 520.1MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-11-29 23:50:25,179 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.94ms. Allocated memory is still 576.7MB. Free memory was 520.1MB in the beginning and 518.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 23:50:25,179 INFO L158 Benchmark]: Boogie Preprocessor took 17.04ms. Allocated memory is still 576.7MB. Free memory was 518.0MB in the beginning and 515.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 23:50:25,179 INFO L158 Benchmark]: RCFGBuilder took 324.06ms. Allocated memory is still 576.7MB. Free memory was 515.9MB in the beginning and 497.1MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-11-29 23:50:25,180 INFO L158 Benchmark]: TraceAbstraction took 809551.81ms. Allocated memory was 576.7MB in the beginning and 5.5GB in the end (delta: 4.9GB). Free memory was 497.1MB in the beginning and 1.8GB in the end (delta: -1.3GB). Peak memory consumption was 4.8GB. Max. memory is 16.0GB. [2023-11-29 23:50:25,180 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 379.6MB. Free memory is still 328.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 162.87ms. Allocated memory is still 576.7MB. Free memory was 531.7MB in the beginning and 520.1MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 23.94ms. Allocated memory is still 576.7MB. Free memory was 520.1MB in the beginning and 518.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 17.04ms. Allocated memory is still 576.7MB. Free memory was 518.0MB in the beginning and 515.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 324.06ms. Allocated memory is still 576.7MB. Free memory was 515.9MB in the beginning and 497.1MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 809551.81ms. Allocated memory was 576.7MB in the beginning and 5.5GB in the end (delta: 4.9GB). Free memory was 497.1MB in the beginning and 1.8GB in the end (delta: -1.3GB). Peak memory consumption was 4.8GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (53states, 63/187 universal loopers) in iteration 13,while PetriNetUnfolder was constructing finite prefix that currently has 1163380 conditions, 211986 events (114947/211985 cut-off events. For 681174/688168 co-relation queries the response was YES. Maximal size of possible extension queue 3564. Compared 2339521 event pairs, 3995 based on Foata normal form. 450/200447 useless extension candidates. Maximal degree in co-relation 1032398. Up to 105290 conditions per place.). - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (53states, 63/187 universal loopers) in iteration 13,while PetriNetUnfolder was constructing finite prefix that currently has 1163380 conditions, 211986 events (114947/211985 cut-off events. For 681174/688168 co-relation queries the response was YES. Maximal size of possible extension queue 3564. Compared 2339521 event pairs, 3995 based on Foata normal form. 450/200447 useless extension candidates. Maximal degree in co-relation 1032398. Up to 105290 conditions per place.). - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (53states, 63/187 universal loopers) in iteration 13,while PetriNetUnfolder was constructing finite prefix that currently has 1163380 conditions, 211986 events (114947/211985 cut-off events. For 681174/688168 co-relation queries the response was YES. Maximal size of possible extension queue 3564. Compared 2339521 event pairs, 3995 based on Foata normal form. 450/200447 useless extension candidates. Maximal degree in co-relation 1032398. Up to 105290 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 239 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: 809.5s, OverallIterations: 13, TraceHistogramMax: 3, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 789.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 5 mSolverCounterUnknown, 14815 SdHoareTripleChecker+Valid, 32.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14815 mSDsluCounter, 32866 SdHoareTripleChecker+Invalid, 30.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 3710 IncrementalHoareTripleChecker+Unchecked, 31435 mSDsCounter, 764 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 41207 IncrementalHoareTripleChecker+Invalid, 45686 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 764 mSolverCounterUnsat, 1431 mSDtfsCounter, 41207 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3403 GetRequests, 2040 SyntacticMatches, 9 SemanticMatches, 1354 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 188922 ImplicationChecksByTransitivity, 114.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=254320occurred in iteration=12, InterpolantAutomatonStates: 1039, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 17.5s InterpolantComputationTime, 2872 NumberOfCodeBlocks, 2844 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 3932 ConstructedInterpolants, 165 QuantifiedInterpolants, 27912 SizeOfPredicates, 132 NumberOfNonLiveVariables, 2139 ConjunctsInSsa, 187 ConjunctsInUnsatCore, 27 InterpolantComputations, 8 PerfectInterpolantSequences, 150/351 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