/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:32:47,172 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:32:47,241 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-SemanticLbe.epf [2023-11-17 15:32:47,255 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:32:47,255 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:32:47,255 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:32:47,256 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:32:47,256 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:32:47,257 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:32:47,260 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:32:47,260 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:32:47,260 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:32:47,260 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:32:47,261 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:32:47,262 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:32:47,262 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:32:47,262 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:32:47,262 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:32:47,262 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:32:47,262 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:32:47,262 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:32:47,263 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:32:47,263 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:32:47,263 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:32:47,263 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:32:47,263 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:32:47,264 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:32:47,264 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:32:47,264 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:32:47,264 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:32:47,265 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:32:47,265 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:32:47,265 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:32:47,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:32:47,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:32:47,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:32:47,459 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:32:47,460 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:32:47,460 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2023-11-17 15:32:48,550 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:32:48,692 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:32:48,693 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2023-11-17 15:32:48,702 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75fe10fcd/7ba7ad4ffbf447d09911e8a0df78a2c0/FLAGa7f5662a4 [2023-11-17 15:32:48,711 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75fe10fcd/7ba7ad4ffbf447d09911e8a0df78a2c0 [2023-11-17 15:32:48,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:32:48,714 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:32:48,715 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:32:48,715 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:32:48,718 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:32:48,719 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:32:48" (1/1) ... [2023-11-17 15:32:48,719 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5175b01b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:32:48, skipping insertion in model container [2023-11-17 15:32:48,719 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:32:48" (1/1) ... [2023-11-17 15:32:48,769 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:32:48,891 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i[1097,1110] [2023-11-17 15:32:49,015 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:32:49,025 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:32:49,035 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i[1097,1110] [2023-11-17 15:32:49,059 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:32:49,086 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:32:49,087 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:32:49 WrapperNode [2023-11-17 15:32:49,087 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:32:49,088 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:32:49,088 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:32:49,088 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:32:49,093 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:32:49" (1/1) ... [2023-11-17 15:32:49,118 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:32:49" (1/1) ... [2023-11-17 15:32:49,140 INFO L138 Inliner]: procedures = 164, calls = 64, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 121 [2023-11-17 15:32:49,140 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:32:49,141 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:32:49,141 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:32:49,141 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:32:49,148 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:32:49" (1/1) ... [2023-11-17 15:32:49,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:32:49" (1/1) ... [2023-11-17 15:32:49,152 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:32:49" (1/1) ... [2023-11-17 15:32:49,152 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:32:49" (1/1) ... [2023-11-17 15:32:49,162 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:32:49" (1/1) ... [2023-11-17 15:32:49,163 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:32:49" (1/1) ... [2023-11-17 15:32:49,164 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:32:49" (1/1) ... [2023-11-17 15:32:49,165 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:32:49" (1/1) ... [2023-11-17 15:32:49,167 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:32:49,167 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:32:49,167 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:32:49,167 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:32:49,168 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:32:49" (1/1) ... [2023-11-17 15:32:49,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:32:49,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:32:49,213 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 15:32:49,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 15:32:49,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 15:32:49,233 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-17 15:32:49,233 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-17 15:32:49,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:32:49,234 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-17 15:32:49,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:32:49,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:32:49,234 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-17 15:32:49,234 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-17 15:32:49,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:32:49,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:32:49,234 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-17 15:32:49,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:32:49,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:32:49,235 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 15:32:49,410 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:32:49,426 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:32:49,707 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:32:49,757 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:32:49,757 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 15:32:49,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:32:49 BoogieIcfgContainer [2023-11-17 15:32:49,759 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:32:49,761 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:32:49,761 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:32:49,763 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:32:49,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:32:48" (1/3) ... [2023-11-17 15:32:49,764 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24585ed3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:32:49, skipping insertion in model container [2023-11-17 15:32:49,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:32:49" (2/3) ... [2023-11-17 15:32:49,764 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24585ed3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:32:49, skipping insertion in model container [2023-11-17 15:32:49,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:32:49" (3/3) ... [2023-11-17 15:32:49,765 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_27-multiple-protecting2_true.i [2023-11-17 15:32:49,777 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:32:49,777 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-17 15:32:49,777 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:32:49,829 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 15:32:49,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 167 transitions, 348 flow [2023-11-17 15:32:49,916 INFO L124 PetriNetUnfolderBase]: 4/165 cut-off events. [2023-11-17 15:32:49,916 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 15:32:49,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 165 events. 4/165 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 154 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 117. Up to 2 conditions per place. [2023-11-17 15:32:49,920 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 167 transitions, 348 flow [2023-11-17 15:32:49,923 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 142 transitions, 290 flow [2023-11-17 15:32:49,925 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:32:49,933 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 146 places, 142 transitions, 290 flow [2023-11-17 15:32:49,935 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 146 places, 142 transitions, 290 flow [2023-11-17 15:32:49,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 142 transitions, 290 flow [2023-11-17 15:32:49,955 INFO L124 PetriNetUnfolderBase]: 3/142 cut-off events. [2023-11-17 15:32:49,956 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:32:49,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 142 events. 3/142 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 147 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 107. Up to 2 conditions per place. [2023-11-17 15:32:49,959 INFO L119 LiptonReduction]: Number of co-enabled transitions 5922 [2023-11-17 15:32:53,351 INFO L134 LiptonReduction]: Checked pairs total: 13651 [2023-11-17 15:32:53,352 INFO L136 LiptonReduction]: Total number of compositions: 130 [2023-11-17 15:32:53,367 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:32:53,374 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=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@609e9858, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:32:53,374 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-17 15:32:53,377 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:32:53,377 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-17 15:32:53,377 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:32:53,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:32:53,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-17 15:32:53,378 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-17 15:32:53,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:32:53,381 INFO L85 PathProgramCache]: Analyzing trace with hash 2072819922, now seen corresponding path program 1 times [2023-11-17 15:32:53,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:32:53,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224164977] [2023-11-17 15:32:53,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:32:53,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:32:53,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:32:53,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:32:53,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:32:53,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224164977] [2023-11-17 15:32:53,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224164977] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:32:53,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:32:53,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:32:53,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530856928] [2023-11-17 15:32:53,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:32:53,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-17 15:32:53,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:32:53,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-17 15:32:53,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-17 15:32:53,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 297 [2023-11-17 15:32:53,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 86 flow. Second operand has 2 states, 2 states have (on average 134.0) internal successors, (268), 2 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:53,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:32:53,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 297 [2023-11-17 15:32:53,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:32:53,921 INFO L124 PetriNetUnfolderBase]: 2528/4005 cut-off events. [2023-11-17 15:32:53,921 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-17 15:32:53,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8034 conditions, 4005 events. 2528/4005 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 19085 event pairs, 2528 based on Foata normal form. 0/3762 useless extension candidates. Maximal degree in co-relation 8024. Up to 4006 conditions per place. [2023-11-17 15:32:53,965 INFO L140 encePairwiseOnDemand]: 294/297 looper letters, 37 selfloop transitions, 0 changer transitions 0/37 dead transitions. [2023-11-17 15:32:53,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 37 transitions, 154 flow [2023-11-17 15:32:53,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 15:32:53,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-17 15:32:53,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 302 transitions. [2023-11-17 15:32:53,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5084175084175084 [2023-11-17 15:32:53,975 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 302 transitions. [2023-11-17 15:32:53,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 302 transitions. [2023-11-17 15:32:53,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:32:53,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 302 transitions. [2023-11-17 15:32:53,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 151.0) internal successors, (302), 2 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:53,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 297.0) internal successors, (891), 3 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:53,982 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 297.0) internal successors, (891), 3 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:53,983 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 86 flow. Second operand 2 states and 302 transitions. [2023-11-17 15:32:53,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 37 transitions, 154 flow [2023-11-17 15:32:53,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 37 transitions, 152 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 15:32:53,987 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 78 flow [2023-11-17 15:32:53,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=78, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2023-11-17 15:32:53,990 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -1 predicate places. [2023-11-17 15:32:53,990 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 78 flow [2023-11-17 15:32:53,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 134.0) internal successors, (268), 2 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:53,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:32:53,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:32:53,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:32:53,991 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-17 15:32:53,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:32:53,991 INFO L85 PathProgramCache]: Analyzing trace with hash -167145848, now seen corresponding path program 1 times [2023-11-17 15:32:53,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:32:53,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722083834] [2023-11-17 15:32:53,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:32:53,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:32:54,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:32:54,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:32:54,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:32:54,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722083834] [2023-11-17 15:32:54,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722083834] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:32:54,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:32:54,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 15:32:54,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602853951] [2023-11-17 15:32:54,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:32:54,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:32:54,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:32:54,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:32:54,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:32:54,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 297 [2023-11-17 15:32:54,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:54,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:32:54,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 297 [2023-11-17 15:32:54,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:32:54,420 INFO L124 PetriNetUnfolderBase]: 3437/5481 cut-off events. [2023-11-17 15:32:54,421 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:32:54,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10985 conditions, 5481 events. 3437/5481 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 30096 event pairs, 1319 based on Foata normal form. 81/5319 useless extension candidates. Maximal degree in co-relation 10982. Up to 2752 conditions per place. [2023-11-17 15:32:54,438 INFO L140 encePairwiseOnDemand]: 289/297 looper letters, 61 selfloop transitions, 5 changer transitions 0/66 dead transitions. [2023-11-17 15:32:54,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 66 transitions, 270 flow [2023-11-17 15:32:54,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:32:54,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:32:54,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 438 transitions. [2023-11-17 15:32:54,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49158249158249157 [2023-11-17 15:32:54,441 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 438 transitions. [2023-11-17 15:32:54,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 438 transitions. [2023-11-17 15:32:54,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:32:54,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 438 transitions. [2023-11-17 15:32:54,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:54,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 297.0) internal successors, (1188), 4 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:54,445 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 297.0) internal successors, (1188), 4 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:54,445 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 78 flow. Second operand 3 states and 438 transitions. [2023-11-17 15:32:54,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 66 transitions, 270 flow [2023-11-17 15:32:54,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 66 transitions, 270 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 15:32:54,446 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 116 flow [2023-11-17 15:32:54,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2023-11-17 15:32:54,447 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2023-11-17 15:32:54,447 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 116 flow [2023-11-17 15:32:54,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:54,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:32:54,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:32:54,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:32:54,448 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-17 15:32:54,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:32:54,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1896498888, now seen corresponding path program 1 times [2023-11-17 15:32:54,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:32:54,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353158497] [2023-11-17 15:32:54,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:32:54,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:32:54,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:32:54,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:32:54,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:32:54,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353158497] [2023-11-17 15:32:54,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353158497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:32:54,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:32:54,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:32:54,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821373915] [2023-11-17 15:32:54,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:32:54,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:32:54,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:32:54,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:32:54,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:32:54,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 297 [2023-11-17 15:32:54,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 121.5) internal successors, (486), 4 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:54,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:32:54,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 297 [2023-11-17 15:32:54,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:32:54,762 INFO L124 PetriNetUnfolderBase]: 785/1560 cut-off events. [2023-11-17 15:32:54,763 INFO L125 PetriNetUnfolderBase]: For 171/171 co-relation queries the response was YES. [2023-11-17 15:32:54,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3476 conditions, 1560 events. 785/1560 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 8373 event pairs, 242 based on Foata normal form. 171/1698 useless extension candidates. Maximal degree in co-relation 3471. Up to 1214 conditions per place. [2023-11-17 15:32:54,768 INFO L140 encePairwiseOnDemand]: 291/297 looper letters, 70 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2023-11-17 15:32:54,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 76 transitions, 370 flow [2023-11-17 15:32:54,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:32:54,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:32:54,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 548 transitions. [2023-11-17 15:32:54,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4612794612794613 [2023-11-17 15:32:54,770 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 548 transitions. [2023-11-17 15:32:54,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 548 transitions. [2023-11-17 15:32:54,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:32:54,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 548 transitions. [2023-11-17 15:32:54,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:54,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:54,776 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:54,776 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 116 flow. Second operand 4 states and 548 transitions. [2023-11-17 15:32:54,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 76 transitions, 370 flow [2023-11-17 15:32:54,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 76 transitions, 352 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 15:32:54,782 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 135 flow [2023-11-17 15:32:54,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=135, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2023-11-17 15:32:54,783 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 5 predicate places. [2023-11-17 15:32:54,784 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 135 flow [2023-11-17 15:32:54,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.5) internal successors, (486), 4 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:54,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:32:54,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:32:54,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 15:32:54,785 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-17 15:32:54,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:32:54,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1888963454, now seen corresponding path program 1 times [2023-11-17 15:32:54,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:32:54,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423614639] [2023-11-17 15:32:54,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:32:54,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:32:54,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:32:54,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:32:54,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:32:54,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423614639] [2023-11-17 15:32:54,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423614639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:32:54,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:32:54,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 15:32:54,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326273421] [2023-11-17 15:32:54,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:32:54,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:32:54,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:32:54,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:32:54,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:32:54,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 297 [2023-11-17 15:32:54,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:54,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:32:54,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 297 [2023-11-17 15:32:54,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:32:55,052 INFO L124 PetriNetUnfolderBase]: 1023/2007 cut-off events. [2023-11-17 15:32:55,052 INFO L125 PetriNetUnfolderBase]: For 394/394 co-relation queries the response was YES. [2023-11-17 15:32:55,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4891 conditions, 2007 events. 1023/2007 cut-off events. For 394/394 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 11166 event pairs, 338 based on Foata normal form. 0/1959 useless extension candidates. Maximal degree in co-relation 4885. Up to 1151 conditions per place. [2023-11-17 15:32:55,059 INFO L140 encePairwiseOnDemand]: 292/297 looper letters, 72 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2023-11-17 15:32:55,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 76 transitions, 390 flow [2023-11-17 15:32:55,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:32:55,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:32:55,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 441 transitions. [2023-11-17 15:32:55,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.494949494949495 [2023-11-17 15:32:55,060 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 441 transitions. [2023-11-17 15:32:55,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 441 transitions. [2023-11-17 15:32:55,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:32:55,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 441 transitions. [2023-11-17 15:32:55,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 297.0) internal successors, (1188), 4 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,063 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 297.0) internal successors, (1188), 4 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,064 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 135 flow. Second operand 3 states and 441 transitions. [2023-11-17 15:32:55,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 76 transitions, 390 flow [2023-11-17 15:32:55,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 76 transitions, 389 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:32:55,065 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 160 flow [2023-11-17 15:32:55,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2023-11-17 15:32:55,066 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 8 predicate places. [2023-11-17 15:32:55,066 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 160 flow [2023-11-17 15:32:55,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:32:55,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:32:55,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 15:32:55,067 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-17 15:32:55,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:32:55,067 INFO L85 PathProgramCache]: Analyzing trace with hash 2077298909, now seen corresponding path program 1 times [2023-11-17 15:32:55,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:32:55,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180845956] [2023-11-17 15:32:55,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:32:55,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:32:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:32:55,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:32:55,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:32:55,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180845956] [2023-11-17 15:32:55,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180845956] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:32:55,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:32:55,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:32:55,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335721881] [2023-11-17 15:32:55,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:32:55,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:32:55,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:32:55,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:32:55,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:32:55,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 297 [2023-11-17 15:32:55,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 126.75) internal successors, (507), 4 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:32:55,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 297 [2023-11-17 15:32:55,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:32:55,306 INFO L124 PetriNetUnfolderBase]: 921/1860 cut-off events. [2023-11-17 15:32:55,306 INFO L125 PetriNetUnfolderBase]: For 640/640 co-relation queries the response was YES. [2023-11-17 15:32:55,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4818 conditions, 1860 events. 921/1860 cut-off events. For 640/640 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 10431 event pairs, 637 based on Foata normal form. 49/1909 useless extension candidates. Maximal degree in co-relation 4811. Up to 1348 conditions per place. [2023-11-17 15:32:55,313 INFO L140 encePairwiseOnDemand]: 289/297 looper letters, 64 selfloop transitions, 3 changer transitions 0/67 dead transitions. [2023-11-17 15:32:55,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 67 transitions, 363 flow [2023-11-17 15:32:55,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:32:55,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:32:55,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 556 transitions. [2023-11-17 15:32:55,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.468013468013468 [2023-11-17 15:32:55,317 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 556 transitions. [2023-11-17 15:32:55,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 556 transitions. [2023-11-17 15:32:55,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:32:55,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 556 transitions. [2023-11-17 15:32:55,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,320 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,320 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 160 flow. Second operand 4 states and 556 transitions. [2023-11-17 15:32:55,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 67 transitions, 363 flow [2023-11-17 15:32:55,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 67 transitions, 349 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 15:32:55,322 INFO L231 Difference]: Finished difference. Result has 55 places, 44 transitions, 169 flow [2023-11-17 15:32:55,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=55, PETRI_TRANSITIONS=44} [2023-11-17 15:32:55,323 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 11 predicate places. [2023-11-17 15:32:55,323 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 44 transitions, 169 flow [2023-11-17 15:32:55,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.75) internal successors, (507), 4 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:32:55,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:32:55,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 15:32:55,324 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-17 15:32:55,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:32:55,324 INFO L85 PathProgramCache]: Analyzing trace with hash 2093631088, now seen corresponding path program 1 times [2023-11-17 15:32:55,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:32:55,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564854162] [2023-11-17 15:32:55,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:32:55,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:32:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:32:55,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:32:55,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:32:55,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564854162] [2023-11-17 15:32:55,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564854162] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:32:55,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:32:55,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:32:55,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006915712] [2023-11-17 15:32:55,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:32:55,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:32:55,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:32:55,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:32:55,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:32:55,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 297 [2023-11-17 15:32:55,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 44 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:32:55,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 297 [2023-11-17 15:32:55,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:32:55,494 INFO L124 PetriNetUnfolderBase]: 613/1577 cut-off events. [2023-11-17 15:32:55,494 INFO L125 PetriNetUnfolderBase]: For 937/937 co-relation queries the response was YES. [2023-11-17 15:32:55,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4468 conditions, 1577 events. 613/1577 cut-off events. For 937/937 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 10296 event pairs, 227 based on Foata normal form. 277/1824 useless extension candidates. Maximal degree in co-relation 4459. Up to 831 conditions per place. [2023-11-17 15:32:55,499 INFO L140 encePairwiseOnDemand]: 279/297 looper letters, 56 selfloop transitions, 19 changer transitions 1/76 dead transitions. [2023-11-17 15:32:55,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 76 transitions, 452 flow [2023-11-17 15:32:55,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:32:55,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:32:55,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 447 transitions. [2023-11-17 15:32:55,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5016835016835017 [2023-11-17 15:32:55,500 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 447 transitions. [2023-11-17 15:32:55,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 447 transitions. [2023-11-17 15:32:55,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:32:55,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 447 transitions. [2023-11-17 15:32:55,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 297.0) internal successors, (1188), 4 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,503 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 297.0) internal successors, (1188), 4 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,503 INFO L175 Difference]: Start difference. First operand has 55 places, 44 transitions, 169 flow. Second operand 3 states and 447 transitions. [2023-11-17 15:32:55,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 76 transitions, 452 flow [2023-11-17 15:32:55,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 76 transitions, 426 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-11-17 15:32:55,506 INFO L231 Difference]: Finished difference. Result has 55 places, 55 transitions, 269 flow [2023-11-17 15:32:55,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=269, PETRI_PLACES=55, PETRI_TRANSITIONS=55} [2023-11-17 15:32:55,507 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 11 predicate places. [2023-11-17 15:32:55,507 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 55 transitions, 269 flow [2023-11-17 15:32:55,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:32:55,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:32:55,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 15:32:55,508 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-17 15:32:55,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:32:55,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1184995250, now seen corresponding path program 1 times [2023-11-17 15:32:55,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:32:55,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004928851] [2023-11-17 15:32:55,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:32:55,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:32:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:32:55,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:32:55,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:32:55,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004928851] [2023-11-17 15:32:55,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004928851] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:32:55,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:32:55,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:32:55,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224902819] [2023-11-17 15:32:55,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:32:55,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:32:55,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:32:55,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:32:55,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:32:55,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 297 [2023-11-17 15:32:55,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 55 transitions, 269 flow. Second operand has 5 states, 5 states have (on average 116.6) internal successors, (583), 5 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:32:55,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 297 [2023-11-17 15:32:55,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:32:55,756 INFO L124 PetriNetUnfolderBase]: 237/684 cut-off events. [2023-11-17 15:32:55,757 INFO L125 PetriNetUnfolderBase]: For 496/496 co-relation queries the response was YES. [2023-11-17 15:32:55,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2367 conditions, 684 events. 237/684 cut-off events. For 496/496 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3554 event pairs, 58 based on Foata normal form. 66/735 useless extension candidates. Maximal degree in co-relation 2357. Up to 646 conditions per place. [2023-11-17 15:32:55,763 INFO L140 encePairwiseOnDemand]: 293/297 looper letters, 46 selfloop transitions, 6 changer transitions 11/63 dead transitions. [2023-11-17 15:32:55,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 63 transitions, 427 flow [2023-11-17 15:32:55,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:32:55,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:32:55,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 498 transitions. [2023-11-17 15:32:55,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2023-11-17 15:32:55,764 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 498 transitions. [2023-11-17 15:32:55,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 498 transitions. [2023-11-17 15:32:55,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:32:55,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 498 transitions. [2023-11-17 15:32:55,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 124.5) internal successors, (498), 4 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,767 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,767 INFO L175 Difference]: Start difference. First operand has 55 places, 55 transitions, 269 flow. Second operand 4 states and 498 transitions. [2023-11-17 15:32:55,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 63 transitions, 427 flow [2023-11-17 15:32:55,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 63 transitions, 395 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-17 15:32:55,770 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 187 flow [2023-11-17 15:32:55,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=187, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2023-11-17 15:32:55,771 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 8 predicate places. [2023-11-17 15:32:55,771 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 187 flow [2023-11-17 15:32:55,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 116.6) internal successors, (583), 5 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:32:55,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:32:55,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 15:32:55,772 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-17 15:32:55,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:32:55,776 INFO L85 PathProgramCache]: Analyzing trace with hash 348816184, now seen corresponding path program 1 times [2023-11-17 15:32:55,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:32:55,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522370140] [2023-11-17 15:32:55,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:32:55,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:32:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:32:55,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:32:55,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:32:55,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522370140] [2023-11-17 15:32:55,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522370140] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:32:55,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:32:55,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 15:32:55,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394009208] [2023-11-17 15:32:55,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:32:55,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:32:55,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:32:55,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:32:55,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-17 15:32:55,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 297 [2023-11-17 15:32:55,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 187 flow. Second operand has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:32:55,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 297 [2023-11-17 15:32:55,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:32:55,970 INFO L124 PetriNetUnfolderBase]: 98/319 cut-off events. [2023-11-17 15:32:55,970 INFO L125 PetriNetUnfolderBase]: For 239/239 co-relation queries the response was YES. [2023-11-17 15:32:55,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1035 conditions, 319 events. 98/319 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1397 event pairs, 35 based on Foata normal form. 28/347 useless extension candidates. Maximal degree in co-relation 1027. Up to 211 conditions per place. [2023-11-17 15:32:55,971 INFO L140 encePairwiseOnDemand]: 293/297 looper letters, 48 selfloop transitions, 6 changer transitions 0/54 dead transitions. [2023-11-17 15:32:55,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 54 transitions, 356 flow [2023-11-17 15:32:55,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:32:55,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:32:55,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 496 transitions. [2023-11-17 15:32:55,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175084175084175 [2023-11-17 15:32:55,973 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 496 transitions. [2023-11-17 15:32:55,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 496 transitions. [2023-11-17 15:32:55,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:32:55,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 496 transitions. [2023-11-17 15:32:55,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,975 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,975 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 187 flow. Second operand 4 states and 496 transitions. [2023-11-17 15:32:55,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 54 transitions, 356 flow [2023-11-17 15:32:55,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 54 transitions, 333 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-17 15:32:55,977 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 178 flow [2023-11-17 15:32:55,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2023-11-17 15:32:55,977 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2023-11-17 15:32:55,977 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 178 flow [2023-11-17 15:32:55,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:55,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:32:55,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:32:55,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 15:32:55,978 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-17 15:32:55,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:32:55,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1079789964, now seen corresponding path program 1 times [2023-11-17 15:32:55,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:32:55,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762723898] [2023-11-17 15:32:55,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:32:55,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:32:55,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:32:56,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:32:56,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:32:56,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762723898] [2023-11-17 15:32:56,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762723898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:32:56,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:32:56,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:32:56,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314388882] [2023-11-17 15:32:56,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:32:56,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:32:56,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:32:56,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:32:56,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:32:56,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 297 [2023-11-17 15:32:56,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 128.4) internal successors, (642), 5 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:56,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:32:56,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 297 [2023-11-17 15:32:56,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:32:56,141 INFO L124 PetriNetUnfolderBase]: 98/315 cut-off events. [2023-11-17 15:32:56,141 INFO L125 PetriNetUnfolderBase]: For 171/171 co-relation queries the response was YES. [2023-11-17 15:32:56,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 989 conditions, 315 events. 98/315 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1351 event pairs, 58 based on Foata normal form. 4/319 useless extension candidates. Maximal degree in co-relation 981. Up to 242 conditions per place. [2023-11-17 15:32:56,142 INFO L140 encePairwiseOnDemand]: 292/297 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2023-11-17 15:32:56,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 60 transitions, 389 flow [2023-11-17 15:32:56,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:32:56,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:32:56,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 668 transitions. [2023-11-17 15:32:56,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4498316498316498 [2023-11-17 15:32:56,143 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 668 transitions. [2023-11-17 15:32:56,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 668 transitions. [2023-11-17 15:32:56,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:32:56,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 668 transitions. [2023-11-17 15:32:56,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 133.6) internal successors, (668), 5 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:56,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 297.0) internal successors, (1782), 6 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:56,147 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 297.0) internal successors, (1782), 6 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:56,147 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 178 flow. Second operand 5 states and 668 transitions. [2023-11-17 15:32:56,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 60 transitions, 389 flow [2023-11-17 15:32:56,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 60 transitions, 381 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 15:32:56,148 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2023-11-17 15:32:56,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2023-11-17 15:32:56,148 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2023-11-17 15:32:56,148 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2023-11-17 15:32:56,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 128.4) internal successors, (642), 5 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:32:56,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-11-17 15:32:56,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-11-17 15:32:56,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-11-17 15:32:56,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-11-17 15:32:56,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-11-17 15:32:56,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2023-11-17 15:32:56,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 15:32:56,151 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:32:56,153 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 15:32:56,153 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 15:32:56,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:32:56 BasicIcfg [2023-11-17 15:32:56,155 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 15:32:56,156 INFO L158 Benchmark]: Toolchain (without parser) took 7441.84ms. Allocated memory was 332.4MB in the beginning and 435.2MB in the end (delta: 102.8MB). Free memory was 287.6MB in the beginning and 178.5MB in the end (delta: 109.1MB). Peak memory consumption was 213.4MB. Max. memory is 8.0GB. [2023-11-17 15:32:56,156 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 183.5MB. Free memory was 134.2MB in the beginning and 134.1MB in the end (delta: 172.0kB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:32:56,156 INFO L158 Benchmark]: CACSL2BoogieTranslator took 372.74ms. Allocated memory is still 332.4MB. Free memory was 287.1MB in the beginning and 267.2MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-17 15:32:56,156 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.47ms. Allocated memory is still 332.4MB. Free memory was 267.2MB in the beginning and 265.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:32:56,157 INFO L158 Benchmark]: Boogie Preprocessor took 25.82ms. Allocated memory is still 332.4MB. Free memory was 265.1MB in the beginning and 263.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:32:56,157 INFO L158 Benchmark]: RCFGBuilder took 591.86ms. Allocated memory is still 332.4MB. Free memory was 263.0MB in the beginning and 238.9MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-11-17 15:32:56,157 INFO L158 Benchmark]: TraceAbstraction took 6394.46ms. Allocated memory was 332.4MB in the beginning and 435.2MB in the end (delta: 102.8MB). Free memory was 238.3MB in the beginning and 178.5MB in the end (delta: 59.8MB). Peak memory consumption was 164.1MB. Max. memory is 8.0GB. [2023-11-17 15:32:56,158 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 183.5MB. Free memory was 134.2MB in the beginning and 134.1MB in the end (delta: 172.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 372.74ms. Allocated memory is still 332.4MB. Free memory was 287.1MB in the beginning and 267.2MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 52.47ms. Allocated memory is still 332.4MB. Free memory was 267.2MB in the beginning and 265.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.82ms. Allocated memory is still 332.4MB. Free memory was 265.1MB in the beginning and 263.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 591.86ms. Allocated memory is still 332.4MB. Free memory was 263.0MB in the beginning and 238.9MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * TraceAbstraction took 6394.46ms. Allocated memory was 332.4MB in the beginning and 435.2MB in the end (delta: 102.8MB). Free memory was 238.3MB in the beginning and 178.5MB in the end (delta: 59.8MB). Peak memory consumption was 164.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.4s, 146 PlacesBefore, 44 PlacesAfterwards, 142 TransitionsBefore, 40 TransitionsAfterwards, 5922 CoEnabledTransitionPairs, 7 FixpointIterations, 35 TrivialSequentialCompositions, 80 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 0 ChoiceCompositions, 130 TotalNumberOfCompositions, 13651 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5983, independent: 5625, independent conditional: 0, independent unconditional: 5625, dependent: 358, dependent conditional: 0, dependent unconditional: 358, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3843, independent: 3737, independent conditional: 0, independent unconditional: 3737, dependent: 106, dependent conditional: 0, dependent unconditional: 106, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3843, independent: 3569, independent conditional: 0, independent unconditional: 3569, dependent: 274, dependent conditional: 0, dependent unconditional: 274, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 274, independent: 168, independent conditional: 0, independent unconditional: 168, dependent: 106, dependent conditional: 0, dependent unconditional: 106, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 293, independent: 141, independent conditional: 0, independent unconditional: 141, dependent: 152, dependent conditional: 0, dependent unconditional: 152, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 5983, independent: 1888, independent conditional: 0, independent unconditional: 1888, dependent: 252, dependent conditional: 0, dependent unconditional: 252, unknown: 3843, unknown conditional: 0, unknown unconditional: 3843] , Statistics on independence cache: Total cache size (in pairs): 326, Positive cache size: 277, Positive conditional cache size: 0, Positive unconditional cache size: 277, Negative cache size: 49, Negative conditional cache size: 0, Negative unconditional cache size: 49, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 210 locations, 6 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: 6.3s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 245 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 245 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 89 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 748 IncrementalHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 89 mSolverCounterUnsat, 0 mSDtfsCounter, 748 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=269occurred in iteration=6, InterpolantAutomatonStates: 32, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 613 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-17 15:32:56,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...