/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 13:56:53,591 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 13:56:53,673 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-VariableLbe.epf [2023-08-24 13:56:53,679 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 13:56:53,679 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 13:56:53,704 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 13:56:53,704 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 13:56:53,705 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 13:56:53,705 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 13:56:53,709 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 13:56:53,711 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 13:56:53,712 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 13:56:53,712 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 13:56:53,712 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 13:56:53,712 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 13:56:53,713 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 13:56:53,713 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 13:56:53,713 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 13:56:53,713 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 13:56:53,713 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 13:56:53,714 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 13:56:53,717 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 13:56:53,717 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 13:56:53,717 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 13:56:53,718 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 13:56:53,718 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 13:56:53,718 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 13:56:53,718 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 13:56:53,719 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 13:56:53,719 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 13:56:53,719 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 13:56:53,719 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 13:56:53,719 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 13:56:53,720 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 13:56:53,720 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 13:56:53,720 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 13:56:54,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 13:56:54,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 13:56:54,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 13:56:54,069 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 13:56:54,069 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 13:56:54,070 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c [2023-08-24 13:56:55,311 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 13:56:55,520 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 13:56:55,520 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c [2023-08-24 13:56:55,531 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d32039558/63a16d2532df4bc791c370746382c5d3/FLAG68218a183 [2023-08-24 13:56:55,547 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d32039558/63a16d2532df4bc791c370746382c5d3 [2023-08-24 13:56:55,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 13:56:55,554 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 13:56:55,558 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 13:56:55,558 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 13:56:55,560 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 13:56:55,562 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 01:56:55" (1/1) ... [2023-08-24 13:56:55,563 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@319bc80b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:56:55, skipping insertion in model container [2023-08-24 13:56:55,563 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 01:56:55" (1/1) ... [2023-08-24 13:56:55,597 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 13:56:55,802 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c[4929,4942] [2023-08-24 13:56:55,806 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 13:56:55,817 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 13:56:55,857 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c[4929,4942] [2023-08-24 13:56:55,860 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 13:56:55,883 INFO L206 MainTranslator]: Completed translation [2023-08-24 13:56:55,884 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:56:55 WrapperNode [2023-08-24 13:56:55,884 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 13:56:55,885 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 13:56:55,886 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 13:56:55,886 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 13:56:55,891 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:56:55" (1/1) ... [2023-08-24 13:56:55,912 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:56:55" (1/1) ... [2023-08-24 13:56:55,951 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 21, calls inlined = 29, statements flattened = 408 [2023-08-24 13:56:55,951 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 13:56:55,952 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 13:56:55,952 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 13:56:55,952 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 13:56:55,961 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:56:55" (1/1) ... [2023-08-24 13:56:55,961 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:56:55" (1/1) ... [2023-08-24 13:56:55,975 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:56:55" (1/1) ... [2023-08-24 13:56:55,975 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:56:55" (1/1) ... [2023-08-24 13:56:55,995 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:56:55" (1/1) ... [2023-08-24 13:56:55,999 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:56:55" (1/1) ... [2023-08-24 13:56:56,001 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:56:55" (1/1) ... [2023-08-24 13:56:56,003 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:56:55" (1/1) ... [2023-08-24 13:56:56,007 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 13:56:56,008 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 13:56:56,008 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 13:56:56,008 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 13:56:56,009 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:56:55" (1/1) ... [2023-08-24 13:56:56,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 13:56:56,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:56:56,044 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) [2023-08-24 13:56:56,045 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 [2023-08-24 13:56:56,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 13:56:56,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 13:56:56,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 13:56:56,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 13:56:56,078 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 13:56:56,078 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 13:56:56,078 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 13:56:56,078 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 13:56:56,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 13:56:56,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-24 13:56:56,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 13:56:56,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 13:56:56,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 13:56:56,080 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 13:56:56,193 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 13:56:56,195 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 13:56:56,788 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 13:56:56,797 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 13:56:56,797 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-24 13:56:56,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 01:56:56 BoogieIcfgContainer [2023-08-24 13:56:56,799 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 13:56:56,801 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 13:56:56,801 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 13:56:56,804 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 13:56:56,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 01:56:55" (1/3) ... [2023-08-24 13:56:56,805 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a5031eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 01:56:56, skipping insertion in model container [2023-08-24 13:56:56,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:56:55" (2/3) ... [2023-08-24 13:56:56,805 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a5031eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 01:56:56, skipping insertion in model container [2023-08-24 13:56:56,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 01:56:56" (3/3) ... [2023-08-24 13:56:56,807 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-symm.wvr.c [2023-08-24 13:56:56,821 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 13:56:56,821 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 13:56:56,821 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 13:56:56,962 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-24 13:56:57,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 445 places, 487 transitions, 990 flow [2023-08-24 13:56:57,223 INFO L124 PetriNetUnfolderBase]: 49/485 cut-off events. [2023-08-24 13:56:57,224 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 13:56:57,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 485 events. 49/485 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1351 event pairs, 0 based on Foata normal form. 0/435 useless extension candidates. Maximal degree in co-relation 323. Up to 2 conditions per place. [2023-08-24 13:56:57,240 INFO L82 GeneralOperation]: Start removeDead. Operand has 445 places, 487 transitions, 990 flow [2023-08-24 13:56:57,252 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 435 places, 477 transitions, 966 flow [2023-08-24 13:56:57,255 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 13:56:57,267 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 435 places, 477 transitions, 966 flow [2023-08-24 13:56:57,270 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 435 places, 477 transitions, 966 flow [2023-08-24 13:56:57,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 435 places, 477 transitions, 966 flow [2023-08-24 13:56:57,380 INFO L124 PetriNetUnfolderBase]: 49/477 cut-off events. [2023-08-24 13:56:57,381 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 13:56:57,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 486 conditions, 477 events. 49/477 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1337 event pairs, 0 based on Foata normal form. 0/428 useless extension candidates. Maximal degree in co-relation 323. Up to 2 conditions per place. [2023-08-24 13:56:57,408 INFO L119 LiptonReduction]: Number of co-enabled transitions 53352 [2023-08-24 13:57:14,606 INFO L134 LiptonReduction]: Checked pairs total: 49152 [2023-08-24 13:57:14,607 INFO L136 LiptonReduction]: Total number of compositions: 591 [2023-08-24 13:57:14,619 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 13:57:14,624 INFO L357 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@57f6fcf4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 13:57:14,624 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-24 13:57:14,632 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 13:57:14,632 INFO L124 PetriNetUnfolderBase]: 7/28 cut-off events. [2023-08-24 13:57:14,632 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 13:57:14,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:57:14,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:57:14,634 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 13:57:14,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:57:14,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1099752502, now seen corresponding path program 1 times [2023-08-24 13:57:14,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:57:14,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140380412] [2023-08-24 13:57:14,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:57:14,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:57:14,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:57:15,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:57:15,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:57:15,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140380412] [2023-08-24 13:57:15,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140380412] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:57:15,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:57:15,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 13:57:15,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755346864] [2023-08-24 13:57:15,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:57:15,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 13:57:15,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:57:15,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 13:57:15,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 13:57:15,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 1078 [2023-08-24 13:57:15,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 439.3333333333333) internal successors, (1318), 3 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:15,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:57:15,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 1078 [2023-08-24 13:57:15,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:57:15,239 INFO L124 PetriNetUnfolderBase]: 157/250 cut-off events. [2023-08-24 13:57:15,239 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-08-24 13:57:15,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 250 events. 157/250 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 638 event pairs, 87 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 472. Up to 249 conditions per place. [2023-08-24 13:57:15,241 INFO L140 encePairwiseOnDemand]: 1073/1078 looper letters, 27 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2023-08-24 13:57:15,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 31 transitions, 136 flow [2023-08-24 13:57:15,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 13:57:15,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 13:57:15,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1338 transitions. [2023-08-24 13:57:15,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4137291280148423 [2023-08-24 13:57:15,264 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1338 transitions. [2023-08-24 13:57:15,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1338 transitions. [2023-08-24 13:57:15,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:57:15,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1338 transitions. [2023-08-24 13:57:15,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 446.0) internal successors, (1338), 3 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:15,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1078.0) internal successors, (4312), 4 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:15,288 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1078.0) internal successors, (4312), 4 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:15,290 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 70 flow. Second operand 3 states and 1338 transitions. [2023-08-24 13:57:15,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 31 transitions, 136 flow [2023-08-24 13:57:15,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 31 transitions, 128 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-24 13:57:15,295 INFO L231 Difference]: Finished difference. Result has 28 places, 31 transitions, 84 flow [2023-08-24 13:57:15,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1078, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=28, PETRI_TRANSITIONS=31} [2023-08-24 13:57:15,300 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2023-08-24 13:57:15,300 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 31 transitions, 84 flow [2023-08-24 13:57:15,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 439.3333333333333) internal successors, (1318), 3 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:15,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:57:15,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:57:15,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 13:57:15,302 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 13:57:15,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:57:15,310 INFO L85 PathProgramCache]: Analyzing trace with hash -2106734751, now seen corresponding path program 1 times [2023-08-24 13:57:15,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:57:15,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896781873] [2023-08-24 13:57:15,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:57:15,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:57:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:57:15,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 13:57:15,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:57:15,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896781873] [2023-08-24 13:57:15,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896781873] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 13:57:15,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804132032] [2023-08-24 13:57:15,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:57:15,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:57:15,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:57:15,477 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) [2023-08-24 13:57:15,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 13:57:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:57:15,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-24 13:57:15,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:57:15,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 13:57:15,710 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 13:57:15,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 13:57:15,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804132032] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 13:57:15,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 13:57:15,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-24 13:57:15,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865610179] [2023-08-24 13:57:15,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 13:57:15,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 13:57:15,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:57:15,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 13:57:15,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-08-24 13:57:15,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 1078 [2023-08-24 13:57:15,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 31 transitions, 84 flow. Second operand has 8 states, 8 states have (on average 437.625) internal successors, (3501), 8 states have internal predecessors, (3501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:15,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:57:15,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 1078 [2023-08-24 13:57:15,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:57:15,929 INFO L124 PetriNetUnfolderBase]: 157/256 cut-off events. [2023-08-24 13:57:15,929 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 13:57:15,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 542 conditions, 256 events. 157/256 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 638 event pairs, 87 based on Foata normal form. 3/190 useless extension candidates. Maximal degree in co-relation 512. Up to 249 conditions per place. [2023-08-24 13:57:15,931 INFO L140 encePairwiseOnDemand]: 1073/1078 looper letters, 27 selfloop transitions, 10 changer transitions 0/37 dead transitions. [2023-08-24 13:57:15,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 37 transitions, 182 flow [2023-08-24 13:57:15,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 13:57:15,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 13:57:15,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2653 transitions. [2023-08-24 13:57:15,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4101731601731602 [2023-08-24 13:57:15,938 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2653 transitions. [2023-08-24 13:57:15,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2653 transitions. [2023-08-24 13:57:15,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:57:15,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2653 transitions. [2023-08-24 13:57:15,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 442.1666666666667) internal successors, (2653), 6 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:15,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1078.0) internal successors, (7546), 7 states have internal predecessors, (7546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:15,958 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1078.0) internal successors, (7546), 7 states have internal predecessors, (7546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:15,959 INFO L175 Difference]: Start difference. First operand has 28 places, 31 transitions, 84 flow. Second operand 6 states and 2653 transitions. [2023-08-24 13:57:15,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 37 transitions, 182 flow [2023-08-24 13:57:15,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 37 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 13:57:15,961 INFO L231 Difference]: Finished difference. Result has 35 places, 37 transitions, 146 flow [2023-08-24 13:57:15,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1078, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=146, PETRI_PLACES=35, PETRI_TRANSITIONS=37} [2023-08-24 13:57:15,962 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2023-08-24 13:57:15,962 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 37 transitions, 146 flow [2023-08-24 13:57:15,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 437.625) internal successors, (3501), 8 states have internal predecessors, (3501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:15,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:57:15,964 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:57:15,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-24 13:57:16,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:57:16,176 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 13:57:16,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:57:16,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1424928244, now seen corresponding path program 2 times [2023-08-24 13:57:16,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:57:16,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613081749] [2023-08-24 13:57:16,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:57:16,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:57:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:57:16,366 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-24 13:57:16,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:57:16,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613081749] [2023-08-24 13:57:16,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613081749] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 13:57:16,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420225506] [2023-08-24 13:57:16,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 13:57:16,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:57:16,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:57:16,369 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) [2023-08-24 13:57:16,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-24 13:57:16,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-24 13:57:16,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 13:57:16,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-24 13:57:16,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:57:16,940 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-24 13:57:16,940 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 13:57:16,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420225506] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:57:16,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 13:57:16,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-08-24 13:57:16,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399547374] [2023-08-24 13:57:16,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:57:16,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 13:57:16,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:57:16,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 13:57:16,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-08-24 13:57:16,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 1078 [2023-08-24 13:57:16,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 37 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 421.75) internal successors, (1687), 4 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:16,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:57:16,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 1078 [2023-08-24 13:57:16,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:57:17,225 INFO L124 PetriNetUnfolderBase]: 165/285 cut-off events. [2023-08-24 13:57:17,225 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 13:57:17,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 285 events. 165/285 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 841 event pairs, 87 based on Foata normal form. 1/213 useless extension candidates. Maximal degree in co-relation 562. Up to 249 conditions per place. [2023-08-24 13:57:17,227 INFO L140 encePairwiseOnDemand]: 1074/1078 looper letters, 43 selfloop transitions, 1 changer transitions 7/51 dead transitions. [2023-08-24 13:57:17,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 51 transitions, 281 flow [2023-08-24 13:57:17,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 13:57:17,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 13:57:17,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1717 transitions. [2023-08-24 13:57:17,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39819109461966606 [2023-08-24 13:57:17,232 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1717 transitions. [2023-08-24 13:57:17,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1717 transitions. [2023-08-24 13:57:17,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:57:17,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1717 transitions. [2023-08-24 13:57:17,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 429.25) internal successors, (1717), 4 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:17,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1078.0) internal successors, (5390), 5 states have internal predecessors, (5390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:17,245 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1078.0) internal successors, (5390), 5 states have internal predecessors, (5390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:17,246 INFO L175 Difference]: Start difference. First operand has 35 places, 37 transitions, 146 flow. Second operand 4 states and 1717 transitions. [2023-08-24 13:57:17,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 51 transitions, 281 flow [2023-08-24 13:57:17,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 51 transitions, 265 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-24 13:57:17,248 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 139 flow [2023-08-24 13:57:17,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1078, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2023-08-24 13:57:17,249 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2023-08-24 13:57:17,249 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 139 flow [2023-08-24 13:57:17,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 421.75) internal successors, (1687), 4 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:17,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:57:17,251 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:57:17,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-24 13:57:17,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-24 13:57:17,457 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 13:57:17,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:57:17,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1803241482, now seen corresponding path program 3 times [2023-08-24 13:57:17,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:57:17,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135297923] [2023-08-24 13:57:17,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:57:17,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:57:17,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:57:17,648 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-24 13:57:17,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:57:17,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135297923] [2023-08-24 13:57:17,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135297923] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 13:57:17,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562802783] [2023-08-24 13:57:17,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 13:57:17,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:57:17,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:57:17,652 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) [2023-08-24 13:57:17,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-24 13:57:17,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-24 13:57:17,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 13:57:17,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-24 13:57:17,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:57:18,125 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-24 13:57:18,125 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 13:57:18,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562802783] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:57:18,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 13:57:18,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-08-24 13:57:18,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666697703] [2023-08-24 13:57:18,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:57:18,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 13:57:18,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:57:18,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 13:57:18,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-08-24 13:57:18,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 1078 [2023-08-24 13:57:18,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 421.75) internal successors, (1687), 4 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:18,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:57:18,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 1078 [2023-08-24 13:57:18,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:57:18,430 INFO L124 PetriNetUnfolderBase]: 173/317 cut-off events. [2023-08-24 13:57:18,431 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-24 13:57:18,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 739 conditions, 317 events. 173/317 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1066 event pairs, 96 based on Foata normal form. 3/251 useless extension candidates. Maximal degree in co-relation 720. Up to 256 conditions per place. [2023-08-24 13:57:18,433 INFO L140 encePairwiseOnDemand]: 1074/1078 looper letters, 51 selfloop transitions, 1 changer transitions 5/57 dead transitions. [2023-08-24 13:57:18,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 57 transitions, 302 flow [2023-08-24 13:57:18,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 13:57:18,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 13:57:18,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1723 transitions. [2023-08-24 13:57:18,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.399582560296846 [2023-08-24 13:57:18,438 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1723 transitions. [2023-08-24 13:57:18,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1723 transitions. [2023-08-24 13:57:18,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:57:18,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1723 transitions. [2023-08-24 13:57:18,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 430.75) internal successors, (1723), 4 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:18,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1078.0) internal successors, (5390), 5 states have internal predecessors, (5390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:18,453 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1078.0) internal successors, (5390), 5 states have internal predecessors, (5390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:18,453 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 139 flow. Second operand 4 states and 1723 transitions. [2023-08-24 13:57:18,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 57 transitions, 302 flow [2023-08-24 13:57:18,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 57 transitions, 296 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-24 13:57:18,457 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 145 flow [2023-08-24 13:57:18,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1078, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=145, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-08-24 13:57:18,458 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2023-08-24 13:57:18,458 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 145 flow [2023-08-24 13:57:18,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 421.75) internal successors, (1687), 4 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:18,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:57:18,459 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:57:18,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-24 13:57:18,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:57:18,660 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 13:57:18,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:57:18,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1648122426, now seen corresponding path program 1 times [2023-08-24 13:57:18,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:57:18,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851519682] [2023-08-24 13:57:18,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:57:18,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:57:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:57:18,848 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-24 13:57:18,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:57:18,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851519682] [2023-08-24 13:57:18,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851519682] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 13:57:18,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299686602] [2023-08-24 13:57:18,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:57:18,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:57:18,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:57:18,853 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) [2023-08-24 13:57:18,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-24 13:57:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:57:18,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-24 13:57:18,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:57:19,059 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-24 13:57:19,059 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 13:57:19,128 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-24 13:57:19,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299686602] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 13:57:19,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 13:57:19,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-24 13:57:19,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674876527] [2023-08-24 13:57:19,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 13:57:19,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-24 13:57:19,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:57:19,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-24 13:57:19,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-08-24 13:57:19,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 1078 [2023-08-24 13:57:19,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 145 flow. Second operand has 17 states, 17 states have (on average 436.8235294117647) internal successors, (7426), 17 states have internal predecessors, (7426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:19,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:57:19,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 1078 [2023-08-24 13:57:19,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:57:19,317 INFO L124 PetriNetUnfolderBase]: 172/313 cut-off events. [2023-08-24 13:57:19,317 INFO L125 PetriNetUnfolderBase]: For 180/180 co-relation queries the response was YES. [2023-08-24 13:57:19,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 772 conditions, 313 events. 172/313 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 999 event pairs, 124 based on Foata normal form. 1/267 useless extension candidates. Maximal degree in co-relation 752. Up to 304 conditions per place. [2023-08-24 13:57:19,319 INFO L140 encePairwiseOnDemand]: 1073/1078 looper letters, 27 selfloop transitions, 12 changer transitions 0/39 dead transitions. [2023-08-24 13:57:19,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 235 flow [2023-08-24 13:57:19,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 13:57:19,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 13:57:19,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3086 transitions. [2023-08-24 13:57:19,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40895838855022526 [2023-08-24 13:57:19,326 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3086 transitions. [2023-08-24 13:57:19,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3086 transitions. [2023-08-24 13:57:19,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:57:19,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3086 transitions. [2023-08-24 13:57:19,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 440.85714285714283) internal successors, (3086), 7 states have internal predecessors, (3086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:19,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1078.0) internal successors, (8624), 8 states have internal predecessors, (8624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:19,355 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1078.0) internal successors, (8624), 8 states have internal predecessors, (8624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:19,355 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 145 flow. Second operand 7 states and 3086 transitions. [2023-08-24 13:57:19,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 235 flow [2023-08-24 13:57:19,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 39 transitions, 232 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-24 13:57:19,358 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 188 flow [2023-08-24 13:57:19,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1078, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=188, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2023-08-24 13:57:19,359 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2023-08-24 13:57:19,359 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 188 flow [2023-08-24 13:57:19,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 436.8235294117647) internal successors, (7426), 17 states have internal predecessors, (7426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:19,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:57:19,361 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:57:19,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-24 13:57:19,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:57:19,562 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 13:57:19,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:57:19,562 INFO L85 PathProgramCache]: Analyzing trace with hash -990363399, now seen corresponding path program 1 times [2023-08-24 13:57:19,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:57:19,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031368056] [2023-08-24 13:57:19,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:57:19,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:57:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:57:19,723 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-24 13:57:19,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:57:19,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031368056] [2023-08-24 13:57:19,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031368056] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:57:19,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:57:19,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 13:57:19,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596228904] [2023-08-24 13:57:19,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:57:19,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 13:57:19,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:57:19,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 13:57:19,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 13:57:19,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 428 out of 1078 [2023-08-24 13:57:19,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 433.3333333333333) internal successors, (1300), 3 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:19,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:57:19,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 428 of 1078 [2023-08-24 13:57:19,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:57:19,903 INFO L124 PetriNetUnfolderBase]: 211/378 cut-off events. [2023-08-24 13:57:19,903 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2023-08-24 13:57:19,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 922 conditions, 378 events. 211/378 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1309 event pairs, 124 based on Foata normal form. 0/328 useless extension candidates. Maximal degree in co-relation 846. Up to 318 conditions per place. [2023-08-24 13:57:19,905 INFO L140 encePairwiseOnDemand]: 1075/1078 looper letters, 53 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-08-24 13:57:19,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 55 transitions, 337 flow [2023-08-24 13:57:19,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 13:57:19,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 13:57:19,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1330 transitions. [2023-08-24 13:57:19,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41125541125541126 [2023-08-24 13:57:19,909 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1330 transitions. [2023-08-24 13:57:19,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1330 transitions. [2023-08-24 13:57:19,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:57:19,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1330 transitions. [2023-08-24 13:57:19,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 443.3333333333333) internal successors, (1330), 3 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:19,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1078.0) internal successors, (4312), 4 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:19,917 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1078.0) internal successors, (4312), 4 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:19,918 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 188 flow. Second operand 3 states and 1330 transitions. [2023-08-24 13:57:19,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 55 transitions, 337 flow [2023-08-24 13:57:19,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 55 transitions, 313 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-24 13:57:19,920 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 176 flow [2023-08-24 13:57:19,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1078, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-08-24 13:57:19,920 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2023-08-24 13:57:19,921 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 176 flow [2023-08-24 13:57:19,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 433.3333333333333) internal successors, (1300), 3 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:19,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:57:19,921 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:57:19,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 13:57:19,922 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 13:57:19,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:57:19,922 INFO L85 PathProgramCache]: Analyzing trace with hash 789351445, now seen corresponding path program 2 times [2023-08-24 13:57:19,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:57:19,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301921854] [2023-08-24 13:57:19,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:57:19,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:57:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:57:20,087 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-24 13:57:20,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:57:20,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301921854] [2023-08-24 13:57:20,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301921854] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:57:20,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:57:20,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 13:57:20,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151550532] [2023-08-24 13:57:20,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:57:20,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 13:57:20,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:57:20,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 13:57:20,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 13:57:20,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 428 out of 1078 [2023-08-24 13:57:20,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 433.3333333333333) internal successors, (1300), 3 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:20,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:57:20,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 428 of 1078 [2023-08-24 13:57:20,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:57:20,247 INFO L124 PetriNetUnfolderBase]: 291/506 cut-off events. [2023-08-24 13:57:20,247 INFO L125 PetriNetUnfolderBase]: For 362/362 co-relation queries the response was YES. [2023-08-24 13:57:20,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1362 conditions, 506 events. 291/506 cut-off events. For 362/362 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1671 event pairs, 165 based on Foata normal form. 0/436 useless extension candidates. Maximal degree in co-relation 1296. Up to 381 conditions per place. [2023-08-24 13:57:20,250 INFO L140 encePairwiseOnDemand]: 1075/1078 looper letters, 51 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-08-24 13:57:20,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 53 transitions, 325 flow [2023-08-24 13:57:20,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 13:57:20,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 13:57:20,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1326 transitions. [2023-08-24 13:57:20,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4100185528756957 [2023-08-24 13:57:20,254 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1326 transitions. [2023-08-24 13:57:20,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1326 transitions. [2023-08-24 13:57:20,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:57:20,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1326 transitions. [2023-08-24 13:57:20,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 442.0) internal successors, (1326), 3 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:20,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1078.0) internal successors, (4312), 4 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:20,261 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1078.0) internal successors, (4312), 4 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:20,261 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 176 flow. Second operand 3 states and 1326 transitions. [2023-08-24 13:57:20,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 53 transitions, 325 flow [2023-08-24 13:57:20,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 317 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-24 13:57:20,264 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 184 flow [2023-08-24 13:57:20,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1078, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2023-08-24 13:57:20,266 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2023-08-24 13:57:20,266 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 184 flow [2023-08-24 13:57:20,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 433.3333333333333) internal successors, (1300), 3 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:20,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:57:20,267 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:57:20,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 13:57:20,267 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 13:57:20,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:57:20,267 INFO L85 PathProgramCache]: Analyzing trace with hash -387777528, now seen corresponding path program 1 times [2023-08-24 13:57:20,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:57:20,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792773709] [2023-08-24 13:57:20,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:57:20,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:57:20,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:57:20,572 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-08-24 13:57:20,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:57:20,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792773709] [2023-08-24 13:57:20,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792773709] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:57:20,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:57:20,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 13:57:20,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832841333] [2023-08-24 13:57:20,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:57:20,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 13:57:20,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:57:20,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 13:57:20,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 13:57:20,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 441 out of 1078 [2023-08-24 13:57:20,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 446.6666666666667) internal successors, (1340), 3 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:20,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:57:20,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 441 of 1078 [2023-08-24 13:57:20,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:57:20,733 INFO L124 PetriNetUnfolderBase]: 231/402 cut-off events. [2023-08-24 13:57:20,733 INFO L125 PetriNetUnfolderBase]: For 288/288 co-relation queries the response was YES. [2023-08-24 13:57:20,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1061 conditions, 402 events. 231/402 cut-off events. For 288/288 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1196 event pairs, 82 based on Foata normal form. 34/386 useless extension candidates. Maximal degree in co-relation 994. Up to 371 conditions per place. [2023-08-24 13:57:20,735 INFO L140 encePairwiseOnDemand]: 1074/1078 looper letters, 42 selfloop transitions, 2 changer transitions 4/48 dead transitions. [2023-08-24 13:57:20,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 48 transitions, 305 flow [2023-08-24 13:57:20,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 13:57:20,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 13:57:20,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1361 transitions. [2023-08-24 13:57:20,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42084106369820656 [2023-08-24 13:57:20,739 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1361 transitions. [2023-08-24 13:57:20,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1361 transitions. [2023-08-24 13:57:20,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:57:20,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1361 transitions. [2023-08-24 13:57:20,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 453.6666666666667) internal successors, (1361), 3 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:20,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1078.0) internal successors, (4312), 4 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:20,748 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1078.0) internal successors, (4312), 4 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:20,748 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 184 flow. Second operand 3 states and 1361 transitions. [2023-08-24 13:57:20,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 48 transitions, 305 flow [2023-08-24 13:57:20,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 48 transitions, 302 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 13:57:20,749 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 192 flow [2023-08-24 13:57:20,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1078, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2023-08-24 13:57:20,750 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2023-08-24 13:57:20,750 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 192 flow [2023-08-24 13:57:20,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 446.6666666666667) internal successors, (1340), 3 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:57:20,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:57:20,751 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:57:20,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 13:57:20,751 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 13:57:20,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:57:20,752 INFO L85 PathProgramCache]: Analyzing trace with hash -696538099, now seen corresponding path program 1 times [2023-08-24 13:57:20,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:57:20,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080534126] [2023-08-24 13:57:20,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:57:20,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:57:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:57:24,737 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-24 13:57:24,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:57:24,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080534126] [2023-08-24 13:57:24,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080534126] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 13:57:24,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746826142] [2023-08-24 13:57:24,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:57:24,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:57:24,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:57:24,739 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) [2023-08-24 13:57:24,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-24 13:57:24,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:57:24,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-24 13:57:24,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:57:26,182 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-24 13:57:26,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 13:58:03,963 WARN L234 SmtUtils]: Spent 32.45s on a formula simplification. DAG size of input: 108 DAG size of output: 84 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 13:58:18,583 WARN L234 SmtUtils]: Spent 14.42s on a formula simplification. DAG size of input: 60 DAG size of output: 60 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 13:58:37,082 WARN L234 SmtUtils]: Spent 18.31s on a formula simplification. DAG size of input: 59 DAG size of output: 57 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 13:58:37,874 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 13:58:37,874 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 146 treesize of output 728 [2023-08-24 13:58:44,473 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-24 13:58:44,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746826142] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 13:58:44,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 13:58:44,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 13] total 40 [2023-08-24 13:58:44,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257269573] [2023-08-24 13:58:44,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 13:58:44,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-08-24 13:58:44,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:58:44,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-08-24 13:58:44,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1380, Unknown=0, NotChecked=0, Total=1640 [2023-08-24 13:58:44,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 1078 [2023-08-24 13:58:44,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 192 flow. Second operand has 41 states, 41 states have (on average 336.6829268292683) internal successors, (13804), 41 states have internal predecessors, (13804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:58:44,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:58:44,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 1078 [2023-08-24 13:58:44,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:59:00,351 WARN L234 SmtUtils]: Spent 12.55s on a formula simplification that was a NOOP. DAG size: 89 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 13:59:07,368 WARN L234 SmtUtils]: Spent 6.45s on a formula simplification. DAG size of input: 94 DAG size of output: 65 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 13:59:15,773 WARN L234 SmtUtils]: Spent 8.27s on a formula simplification that was a NOOP. DAG size: 61 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 13:59:33,236 WARN L234 SmtUtils]: Spent 16.77s on a formula simplification. DAG size of input: 103 DAG size of output: 74 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 13:59:42,410 WARN L234 SmtUtils]: Spent 8.53s on a formula simplification. DAG size of input: 98 DAG size of output: 59 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 13:59:51,917 WARN L234 SmtUtils]: Spent 8.54s on a formula simplification. DAG size of input: 112 DAG size of output: 38 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 14:00:34,809 WARN L234 SmtUtils]: Spent 42.10s on a formula simplification. DAG size of input: 101 DAG size of output: 71 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 14:00:45,912 WARN L234 SmtUtils]: Spent 10.92s on a formula simplification that was a NOOP. DAG size: 105 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 14:01:03,360 WARN L234 SmtUtils]: Spent 16.58s on a formula simplification. DAG size of input: 184 DAG size of output: 70 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 14:01:43,800 WARN L234 SmtUtils]: Spent 31.40s on a formula simplification. DAG size of input: 184 DAG size of output: 100 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 14:02:58,521 WARN L234 SmtUtils]: Spent 1.20m on a formula simplification. DAG size of input: 187 DAG size of output: 101 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 14:03:00,656 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 [1] [2023-08-24 14:03:29,968 WARN L234 SmtUtils]: Spent 26.60s on a formula simplification that was a NOOP. DAG size: 115 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 14:03:50,650 WARN L234 SmtUtils]: Spent 20.06s on a formula simplification. DAG size of input: 121 DAG size of output: 118 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 14:04:29,898 WARN L234 SmtUtils]: Spent 36.80s on a formula simplification. DAG size of input: 173 DAG size of output: 170 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 14:05:00,616 WARN L234 SmtUtils]: Spent 18.86s on a formula simplification that was a NOOP. DAG size: 138 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 14:05:31,820 WARN L234 SmtUtils]: Spent 27.73s on a formula simplification that was a NOOP. DAG size: 127 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 14:06:00,003 WARN L234 SmtUtils]: Spent 25.00s on a formula simplification. DAG size of input: 155 DAG size of output: 139 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 14:06:01,610 INFO L124 PetriNetUnfolderBase]: 629/1104 cut-off events. [2023-08-24 14:06:01,610 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2023-08-24 14:06:01,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2729 conditions, 1104 events. 629/1104 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5038 event pairs, 55 based on Foata normal form. 5/978 useless extension candidates. Maximal degree in co-relation 2662. Up to 336 conditions per place. [2023-08-24 14:06:01,616 INFO L140 encePairwiseOnDemand]: 1058/1078 looper letters, 147 selfloop transitions, 130 changer transitions 23/300 dead transitions. [2023-08-24 14:06:01,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 300 transitions, 1473 flow [2023-08-24 14:06:01,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-08-24 14:06:01,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2023-08-24 14:06:01,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 18042 transitions. [2023-08-24 14:06:01,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3157839465117093 [2023-08-24 14:06:01,661 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 18042 transitions. [2023-08-24 14:06:01,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 18042 transitions. [2023-08-24 14:06:01,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:06:01,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 18042 transitions. [2023-08-24 14:06:01,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 340.41509433962267) internal successors, (18042), 53 states have internal predecessors, (18042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:06:01,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 1078.0) internal successors, (58212), 54 states have internal predecessors, (58212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:06:01,789 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 1078.0) internal successors, (58212), 54 states have internal predecessors, (58212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:06:01,789 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 192 flow. Second operand 53 states and 18042 transitions. [2023-08-24 14:06:01,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 300 transitions, 1473 flow [2023-08-24 14:06:01,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 300 transitions, 1449 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-08-24 14:06:01,801 INFO L231 Difference]: Finished difference. Result has 105 places, 184 transitions, 978 flow [2023-08-24 14:06:01,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1078, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=978, PETRI_PLACES=105, PETRI_TRANSITIONS=184} [2023-08-24 14:06:01,802 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 76 predicate places. [2023-08-24 14:06:01,803 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 184 transitions, 978 flow [2023-08-24 14:06:01,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 336.6829268292683) internal successors, (13804), 41 states have internal predecessors, (13804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:06:01,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:06:01,806 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 14:06:01,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-24 14:06:02,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 14:06:02,013 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 14:06:02,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:06:02,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1866960811, now seen corresponding path program 2 times [2023-08-24 14:06:02,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:06:02,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722338924] [2023-08-24 14:06:02,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:06:02,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:06:02,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:06:07,271 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-24 14:06:07,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:06:07,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722338924] [2023-08-24 14:06:07,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722338924] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 14:06:07,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341054467] [2023-08-24 14:06:07,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 14:06:07,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 14:06:07,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 14:06:07,277 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) [2023-08-24 14:06:07,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-24 14:06:07,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 14:06:07,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 14:06:07,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-24 14:06:07,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 14:06:10,987 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 14:06:11,009 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 14:06:11,009 INFO L351 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 87 treesize of output 71 [2023-08-24 14:06:11,747 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-24 14:06:11,748 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 14:06:21,289 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 14:06:21,290 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 524 treesize of output 508 [2023-08-24 14:06:23,891 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-24 14:06:23,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341054467] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 14:06:23,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 14:06:23,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 38 [2023-08-24 14:06:23,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017193183] [2023-08-24 14:06:23,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 14:06:23,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-08-24 14:06:23,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:06:23,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-08-24 14:06:23,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1229, Unknown=0, NotChecked=0, Total=1482 [2023-08-24 14:06:23,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 347 out of 1078 [2023-08-24 14:06:23,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 184 transitions, 978 flow. Second operand has 39 states, 39 states have (on average 348.6666666666667) internal successors, (13598), 39 states have internal predecessors, (13598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:06:23,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:06:23,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 347 of 1078 [2023-08-24 14:06:23,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:07:45,159 INFO L124 PetriNetUnfolderBase]: 1656/2897 cut-off events. [2023-08-24 14:07:45,159 INFO L125 PetriNetUnfolderBase]: For 2246/2246 co-relation queries the response was YES. [2023-08-24 14:07:45,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9701 conditions, 2897 events. 1656/2897 cut-off events. For 2246/2246 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 15236 event pairs, 127 based on Foata normal form. 21/2673 useless extension candidates. Maximal degree in co-relation 9649. Up to 867 conditions per place. [2023-08-24 14:07:45,176 INFO L140 encePairwiseOnDemand]: 1062/1078 looper letters, 329 selfloop transitions, 405 changer transitions 17/751 dead transitions. [2023-08-24 14:07:45,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 751 transitions, 5154 flow [2023-08-24 14:07:45,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-08-24 14:07:45,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2023-08-24 14:07:45,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 29593 transitions. [2023-08-24 14:07:45,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3268066967046559 [2023-08-24 14:07:45,216 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 29593 transitions. [2023-08-24 14:07:45,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 29593 transitions. [2023-08-24 14:07:45,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:07:45,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 29593 transitions. [2023-08-24 14:07:45,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 352.29761904761904) internal successors, (29593), 84 states have internal predecessors, (29593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:07:45,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 1078.0) internal successors, (91630), 85 states have internal predecessors, (91630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:07:45,363 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 1078.0) internal successors, (91630), 85 states have internal predecessors, (91630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:07:45,363 INFO L175 Difference]: Start difference. First operand has 105 places, 184 transitions, 978 flow. Second operand 84 states and 29593 transitions. [2023-08-24 14:07:45,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 751 transitions, 5154 flow [2023-08-24 14:07:45,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 751 transitions, 4945 flow, removed 102 selfloop flow, removed 5 redundant places. [2023-08-24 14:07:45,398 INFO L231 Difference]: Finished difference. Result has 220 places, 527 transitions, 4017 flow [2023-08-24 14:07:45,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1078, PETRI_DIFFERENCE_MINUEND_FLOW=899, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=4017, PETRI_PLACES=220, PETRI_TRANSITIONS=527} [2023-08-24 14:07:45,400 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 191 predicate places. [2023-08-24 14:07:45,400 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 527 transitions, 4017 flow [2023-08-24 14:07:45,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 348.6666666666667) internal successors, (13598), 39 states have internal predecessors, (13598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:07:45,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:07:45,402 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 14:07:45,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-24 14:07:45,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 14:07:45,608 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 14:07:45,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:07:45,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1301222393, now seen corresponding path program 3 times [2023-08-24 14:07:45,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:07:45,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059367007] [2023-08-24 14:07:45,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:07:45,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:07:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:07:49,991 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-24 14:07:49,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:07:49,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059367007] [2023-08-24 14:07:49,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059367007] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 14:07:49,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483542872] [2023-08-24 14:07:49,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 14:07:49,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 14:07:49,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 14:07:49,997 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) [2023-08-24 14:07:49,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-24 14:07:50,259 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-24 14:07:50,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 14:07:50,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 51 conjunts are in the unsatisfiable core [2023-08-24 14:07:50,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 14:07:52,200 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 14:07:52,231 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 14:07:52,231 INFO L351 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 293 treesize of output 257 [2023-08-24 14:07:53,069 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-24 14:07:53,069 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 14:08:04,381 INFO L322 Elim1Store]: treesize reduction 65, result has 70.6 percent of original size [2023-08-24 14:08:04,382 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 104 treesize of output 219 [2023-08-24 14:08:04,648 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-24 14:08:04,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483542872] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 14:08:04,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 14:08:04,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 13] total 38 [2023-08-24 14:08:04,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926340174] [2023-08-24 14:08:04,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 14:08:04,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-08-24 14:08:04,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:08:04,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-08-24 14:08:04,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=1208, Unknown=0, NotChecked=0, Total=1482 [2023-08-24 14:08:04,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 347 out of 1078 [2023-08-24 14:08:04,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 527 transitions, 4017 flow. Second operand has 39 states, 39 states have (on average 348.71794871794873) internal successors, (13600), 39 states have internal predecessors, (13600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:08:04,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:08:04,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 347 of 1078 [2023-08-24 14:08:04,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:08:52,774 INFO L124 PetriNetUnfolderBase]: 2441/4308 cut-off events. [2023-08-24 14:08:52,774 INFO L125 PetriNetUnfolderBase]: For 33946/33946 co-relation queries the response was YES. [2023-08-24 14:08:52,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21613 conditions, 4308 events. 2441/4308 cut-off events. For 33946/33946 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 25030 event pairs, 224 based on Foata normal form. 29/4321 useless extension candidates. Maximal degree in co-relation 21495. Up to 1379 conditions per place. [2023-08-24 14:08:52,817 INFO L140 encePairwiseOnDemand]: 1062/1078 looper letters, 508 selfloop transitions, 499 changer transitions 24/1031 dead transitions. [2023-08-24 14:08:52,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 1031 transitions, 10082 flow [2023-08-24 14:08:52,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-08-24 14:08:52,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-08-24 14:08:52,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 18383 transitions. [2023-08-24 14:08:52,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32793991722563154 [2023-08-24 14:08:52,837 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 18383 transitions. [2023-08-24 14:08:52,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 18383 transitions. [2023-08-24 14:08:52,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:08:52,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 18383 transitions. [2023-08-24 14:08:52,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 353.5192307692308) internal successors, (18383), 52 states have internal predecessors, (18383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:08:52,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 1078.0) internal successors, (57134), 53 states have internal predecessors, (57134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:08:52,907 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 1078.0) internal successors, (57134), 53 states have internal predecessors, (57134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:08:52,907 INFO L175 Difference]: Start difference. First operand has 220 places, 527 transitions, 4017 flow. Second operand 52 states and 18383 transitions. [2023-08-24 14:08:52,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 1031 transitions, 10082 flow [2023-08-24 14:08:53,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 1031 transitions, 9704 flow, removed 173 selfloop flow, removed 4 redundant places. [2023-08-24 14:08:53,208 INFO L231 Difference]: Finished difference. Result has 290 places, 775 transitions, 7503 flow [2023-08-24 14:08:53,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1078, PETRI_DIFFERENCE_MINUEND_FLOW=3819, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=284, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=7503, PETRI_PLACES=290, PETRI_TRANSITIONS=775} [2023-08-24 14:08:53,209 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 261 predicate places. [2023-08-24 14:08:53,209 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 775 transitions, 7503 flow [2023-08-24 14:08:53,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 348.71794871794873) internal successors, (13600), 39 states have internal predecessors, (13600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:08:53,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:08:53,211 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 14:08:53,216 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-24 14:08:53,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 14:08:53,412 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 14:08:53,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:08:53,413 INFO L85 PathProgramCache]: Analyzing trace with hash 296076227, now seen corresponding path program 4 times [2023-08-24 14:08:53,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:08:53,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946573765] [2023-08-24 14:08:53,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:08:53,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:08:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:08:57,096 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-24 14:08:57,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:08:57,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946573765] [2023-08-24 14:08:57,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946573765] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 14:08:57,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518855585] [2023-08-24 14:08:57,096 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 14:08:57,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 14:08:57,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 14:08:57,098 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 14:08:57,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-24 14:08:57,284 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 14:08:57,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 14:08:57,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-24 14:08:57,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 14:08:59,472 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-24 14:08:59,472 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 14:09:22,238 WARN L234 SmtUtils]: Spent 12.74s on a formula simplification. DAG size of input: 84 DAG size of output: 60 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 14:09:31,117 WARN L234 SmtUtils]: Spent 8.56s on a formula simplification. DAG size of input: 54 DAG size of output: 53 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 14:09:32,053 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 14:09:32,054 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 106 treesize of output 391 [2023-08-24 14:09:32,881 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-24 14:09:32,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518855585] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 14:09:32,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 14:09:32,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 39 [2023-08-24 14:09:32,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621466039] [2023-08-24 14:09:32,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 14:09:32,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-08-24 14:09:32,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:09:32,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-08-24 14:09:32,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1343, Unknown=0, NotChecked=0, Total=1560 [2023-08-24 14:09:32,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 347 out of 1078 [2023-08-24 14:09:32,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 775 transitions, 7503 flow. Second operand has 40 states, 40 states have (on average 348.825) internal successors, (13953), 40 states have internal predecessors, (13953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:09:32,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:09:32,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 347 of 1078 [2023-08-24 14:09:32,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:10:19,201 INFO L124 PetriNetUnfolderBase]: 2679/4770 cut-off events. [2023-08-24 14:10:19,201 INFO L125 PetriNetUnfolderBase]: For 76145/76145 co-relation queries the response was YES. [2023-08-24 14:10:19,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28751 conditions, 4770 events. 2679/4770 cut-off events. For 76145/76145 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 29091 event pairs, 409 based on Foata normal form. 7/4769 useless extension candidates. Maximal degree in co-relation 28609. Up to 2223 conditions per place. [2023-08-24 14:10:19,247 INFO L140 encePairwiseOnDemand]: 1062/1078 looper letters, 492 selfloop transitions, 550 changer transitions 20/1062 dead transitions. [2023-08-24 14:10:19,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 1062 transitions, 12106 flow [2023-08-24 14:10:19,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-08-24 14:10:19,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-08-24 14:10:19,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 18005 transitions. [2023-08-24 14:10:19,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3274946342173233 [2023-08-24 14:10:19,267 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 18005 transitions. [2023-08-24 14:10:19,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 18005 transitions. [2023-08-24 14:10:19,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:10:19,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 18005 transitions. [2023-08-24 14:10:19,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 353.03921568627453) internal successors, (18005), 51 states have internal predecessors, (18005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:10:19,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 1078.0) internal successors, (56056), 52 states have internal predecessors, (56056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:10:19,338 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 1078.0) internal successors, (56056), 52 states have internal predecessors, (56056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:10:19,338 INFO L175 Difference]: Start difference. First operand has 290 places, 775 transitions, 7503 flow. Second operand 51 states and 18005 transitions. [2023-08-24 14:10:19,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 1062 transitions, 12106 flow [2023-08-24 14:10:19,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 1062 transitions, 11549 flow, removed 247 selfloop flow, removed 7 redundant places. [2023-08-24 14:10:19,882 INFO L231 Difference]: Finished difference. Result has 344 places, 899 transitions, 10161 flow [2023-08-24 14:10:19,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1078, PETRI_DIFFERENCE_MINUEND_FLOW=7080, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=775, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=435, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=10161, PETRI_PLACES=344, PETRI_TRANSITIONS=899} [2023-08-24 14:10:19,884 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 315 predicate places. [2023-08-24 14:10:19,884 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 899 transitions, 10161 flow [2023-08-24 14:10:19,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 348.825) internal successors, (13953), 40 states have internal predecessors, (13953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:10:19,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:10:19,886 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 14:10:19,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-24 14:10:20,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-24 14:10:20,087 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 14:10:20,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:10:20,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1636954475, now seen corresponding path program 5 times [2023-08-24 14:10:20,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:10:20,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095045556] [2023-08-24 14:10:20,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:10:20,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:10:20,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:10:24,227 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-08-24 14:10:24,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:10:24,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095045556] [2023-08-24 14:10:24,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095045556] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 14:10:24,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102748125] [2023-08-24 14:10:24,228 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 14:10:24,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 14:10:24,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 14:10:24,229 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 14:10:24,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-24 14:10:24,424 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-24 14:10:24,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 14:10:24,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 49 conjunts are in the unsatisfiable core [2023-08-24 14:10:24,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 14:10:26,622 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 14:10:26,638 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 14:10:26,639 INFO L351 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 97 treesize of output 77 [2023-08-24 14:10:27,231 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-24 14:10:27,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 14:10:40,445 INFO L322 Elim1Store]: treesize reduction 65, result has 70.6 percent of original size [2023-08-24 14:10:40,445 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 104 treesize of output 219 [2023-08-24 14:10:40,741 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-24 14:10:40,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102748125] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 14:10:40,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 14:10:40,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 13] total 41 [2023-08-24 14:10:40,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522897655] [2023-08-24 14:10:40,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 14:10:40,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-08-24 14:10:40,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:10:40,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-08-24 14:10:40,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=1458, Unknown=0, NotChecked=0, Total=1722 [2023-08-24 14:10:40,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 1078 [2023-08-24 14:10:40,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 899 transitions, 10161 flow. Second operand has 42 states, 42 states have (on average 336.6666666666667) internal successors, (14140), 42 states have internal predecessors, (14140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:10:40,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:10:40,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 1078 [2023-08-24 14:10:40,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-24 14:10:44,962 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 [2023-08-24 14:10:44,963 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 14:10:45,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-24 14:10:45,020 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-24 14:10:45,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-24 14:10:45,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-24 14:10:45,221 WARN L619 AbstractCegarLoop]: Verification canceled: while PredicateComparison was comparing new predicate (quantifier-free) to 51 known predicates. [2023-08-24 14:10:45,222 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-24 14:10:45,222 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-24 14:10:45,223 INFO L445 BasicCegarLoop]: Path program histogram: [5, 3, 2, 1, 1, 1] [2023-08-24 14:10:45,225 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 14:10:45,226 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 14:10:45,228 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 02:10:45 BasicIcfg [2023-08-24 14:10:45,228 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 14:10:45,228 INFO L158 Benchmark]: Toolchain (without parser) took 829674.29ms. Allocated memory was 341.8MB in the beginning and 861.9MB in the end (delta: 520.1MB). Free memory was 317.8MB in the beginning and 580.6MB in the end (delta: -262.8MB). Peak memory consumption was 259.5MB. Max. memory is 16.0GB. [2023-08-24 14:10:45,228 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 341.8MB. Free memory was 318.4MB in the beginning and 318.4MB in the end (delta: 73.5kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 14:10:45,229 INFO L158 Benchmark]: CACSL2BoogieTranslator took 326.40ms. Allocated memory is still 341.8MB. Free memory was 317.8MB in the beginning and 304.4MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-24 14:10:45,229 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.04ms. Allocated memory is still 341.8MB. Free memory was 304.4MB in the beginning and 301.0MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 14:10:45,229 INFO L158 Benchmark]: Boogie Preprocessor took 55.17ms. Allocated memory is still 341.8MB. Free memory was 301.0MB in the beginning and 298.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 14:10:45,229 INFO L158 Benchmark]: RCFGBuilder took 791.86ms. Allocated memory is still 341.8MB. Free memory was 298.6MB in the beginning and 265.7MB in the end (delta: 32.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.0GB. [2023-08-24 14:10:45,230 INFO L158 Benchmark]: TraceAbstraction took 828426.51ms. Allocated memory was 341.8MB in the beginning and 861.9MB in the end (delta: 520.1MB). Free memory was 265.1MB in the beginning and 580.6MB in the end (delta: -315.5MB). Peak memory consumption was 207.1MB. Max. memory is 16.0GB. [2023-08-24 14:10:45,231 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 341.8MB. Free memory was 318.4MB in the beginning and 318.4MB in the end (delta: 73.5kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 326.40ms. Allocated memory is still 341.8MB. Free memory was 317.8MB in the beginning and 304.4MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 66.04ms. Allocated memory is still 341.8MB. Free memory was 304.4MB in the beginning and 301.0MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 55.17ms. Allocated memory is still 341.8MB. Free memory was 301.0MB in the beginning and 298.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 791.86ms. Allocated memory is still 341.8MB. Free memory was 298.6MB in the beginning and 265.7MB in the end (delta: 32.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.0GB. * TraceAbstraction took 828426.51ms. Allocated memory was 341.8MB in the beginning and 861.9MB in the end (delta: 520.1MB). Free memory was 265.1MB in the beginning and 580.6MB in the end (delta: -315.5MB). Peak memory consumption was 207.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 17.3s, 435 PlacesBefore, 29 PlacesAfterwards, 477 TransitionsBefore, 29 TransitionsAfterwards, 53352 CoEnabledTransitionPairs, 8 FixpointIterations, 135 TrivialSequentialCompositions, 261 ConcurrentSequentialCompositions, 23 TrivialYvCompositions, 130 ConcurrentYvCompositions, 42 ChoiceCompositions, 591 TotalNumberOfCompositions, 49152 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 48078, independent: 47971, independent conditional: 0, independent unconditional: 47971, dependent: 107, dependent conditional: 0, dependent unconditional: 107, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 32801, independent: 32777, independent conditional: 0, independent unconditional: 32777, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 48078, independent: 15194, independent conditional: 0, independent unconditional: 15194, dependent: 83, dependent conditional: 0, dependent unconditional: 83, unknown: 32801, unknown conditional: 0, unknown unconditional: 32801] , Statistics on independence cache: Total cache size (in pairs): 78, Positive cache size: 69, Positive conditional cache size: 0, Positive unconditional cache size: 69, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 128]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 51 known predicates. - TimeoutResultAtElement [Line: 122]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 51 known predicates. - TimeoutResultAtElement [Line: 123]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 51 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 715 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: 828.2s, OverallIterations: 13, TraceHistogramMax: 5, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 620.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 17.6s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 1773 SdHoareTripleChecker+Valid, 35.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1773 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 33.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 695 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9437 IncrementalHoareTripleChecker+Invalid, 10133 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 695 mSolverCounterUnsat, 0 mSDtfsCounter, 9437 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 894 GetRequests, 415 SyntacticMatches, 7 SemanticMatches, 471 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12557 ImplicationChecksByTransitivity, 699.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10161occurred in iteration=12, InterpolantAutomatonStates: 273, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 185.2s InterpolantComputationTime, 574 NumberOfCodeBlocks, 556 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 747 ConstructedInterpolants, 17 QuantifiedInterpolants, 18054 SizeOfPredicates, 266 NumberOfNonLiveVariables, 2242 ConjunctsInSsa, 253 ConjunctsInUnsatCore, 29 InterpolantComputations, 6 PerfectInterpolantSequences, 620/717 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