/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 --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:34:37,971 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:34:38,026 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 11:34:38,055 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:34:38,056 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:34:38,056 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:34:38,056 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:34:38,057 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:34:38,057 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:34:38,060 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:34:38,060 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:34:38,060 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:34:38,060 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:34:38,061 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:34:38,061 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:34:38,061 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:34:38,061 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:34:38,062 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:34:38,062 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:34:38,062 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:34:38,062 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:34:38,062 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:34:38,063 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:34:38,063 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:34:38,063 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:34:38,063 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:34:38,063 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:34:38,063 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:34:38,063 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:34:38,064 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:34:38,064 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:34:38,064 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:34:38,064 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:34:38,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:34:38,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:34:38,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:34:38,262 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:34:38,263 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:34:38,263 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i [2023-11-17 11:34:39,289 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:34:39,481 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:34:39,483 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i [2023-11-17 11:34:39,495 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b1687235/d8a7bbb9467e487690adc82fa2f1605c/FLAGa08f2ff16 [2023-11-17 11:34:39,835 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b1687235/d8a7bbb9467e487690adc82fa2f1605c [2023-11-17 11:34:39,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:34:39,838 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:34:39,839 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:34:39,839 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:34:39,844 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:34:39,844 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:34:39" (1/1) ... [2023-11-17 11:34:39,845 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6edb65d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:34:39, skipping insertion in model container [2023-11-17 11:34:39,845 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:34:39" (1/1) ... [2023-11-17 11:34:39,875 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:34:40,008 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_24-multiple-protecting_true.i[1096,1109] [2023-11-17 11:34:40,139 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:34:40,149 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:34:40,159 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_24-multiple-protecting_true.i[1096,1109] [2023-11-17 11:34:40,187 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:34:40,221 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:34:40,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:34:40 WrapperNode [2023-11-17 11:34:40,221 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:34:40,222 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:34:40,222 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:34:40,222 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:34:40,227 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:34:40" (1/1) ... [2023-11-17 11:34:40,253 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:34:40" (1/1) ... [2023-11-17 11:34:40,275 INFO L138 Inliner]: procedures = 163, calls = 58, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 107 [2023-11-17 11:34:40,276 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:34:40,276 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:34:40,276 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:34:40,276 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:34:40,282 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:34:40" (1/1) ... [2023-11-17 11:34:40,282 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:34:40" (1/1) ... [2023-11-17 11:34:40,286 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:34:40" (1/1) ... [2023-11-17 11:34:40,286 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:34:40" (1/1) ... [2023-11-17 11:34:40,289 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:34:40" (1/1) ... [2023-11-17 11:34:40,290 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:34:40" (1/1) ... [2023-11-17 11:34:40,291 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:34:40" (1/1) ... [2023-11-17 11:34:40,292 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:34:40" (1/1) ... [2023-11-17 11:34:40,294 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:34:40,294 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:34:40,295 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:34:40,295 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:34:40,295 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:34:40" (1/1) ... [2023-11-17 11:34:40,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:34:40,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:34:40,315 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 11:34:40,321 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 11:34:40,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 11:34:40,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:34:40,339 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-17 11:34:40,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:34:40,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:34:40,339 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-17 11:34:40,340 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-17 11:34:40,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:34:40,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:34:40,340 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-17 11:34:40,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:34:40,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:34:40,341 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 11:34:40,447 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:34:40,449 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:34:40,629 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:34:40,737 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:34:40,737 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 11:34:40,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:34:40 BoogieIcfgContainer [2023-11-17 11:34:40,739 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:34:40,740 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:34:40,740 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:34:40,742 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:34:40,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:34:39" (1/3) ... [2023-11-17 11:34:40,743 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f57240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:34:40, skipping insertion in model container [2023-11-17 11:34:40,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:34:40" (2/3) ... [2023-11-17 11:34:40,744 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f57240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:34:40, skipping insertion in model container [2023-11-17 11:34:40,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:34:40" (3/3) ... [2023-11-17 11:34:40,745 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_24-multiple-protecting_true.i [2023-11-17 11:34:40,756 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:34:40,757 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-17 11:34:40,757 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:34:40,797 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-17 11:34:40,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 75 transitions, 157 flow [2023-11-17 11:34:40,853 INFO L124 PetriNetUnfolderBase]: 4/74 cut-off events. [2023-11-17 11:34:40,854 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 11:34:40,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 74 events. 4/74 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 79 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2023-11-17 11:34:40,858 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 75 transitions, 157 flow [2023-11-17 11:34:40,862 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 65 transitions, 133 flow [2023-11-17 11:34:40,872 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:34:40,884 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 65 transitions, 133 flow [2023-11-17 11:34:40,888 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 65 transitions, 133 flow [2023-11-17 11:34:40,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 65 transitions, 133 flow [2023-11-17 11:34:40,911 INFO L124 PetriNetUnfolderBase]: 3/65 cut-off events. [2023-11-17 11:34:40,911 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:34:40,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 65 events. 3/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 74 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2023-11-17 11:34:40,913 INFO L119 LiptonReduction]: Number of co-enabled transitions 1900 [2023-11-17 11:34:41,663 INFO L134 LiptonReduction]: Checked pairs total: 9648 [2023-11-17 11:34:41,663 INFO L136 LiptonReduction]: Total number of compositions: 50 [2023-11-17 11:34:41,673 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:34:41,677 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;@157e41ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:34:41,677 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-17 11:34:41,680 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:34:41,680 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-11-17 11:34:41,680 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:34:41,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:34:41,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-17 11:34:41,681 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-17 11:34:41,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:34:41,684 INFO L85 PathProgramCache]: Analyzing trace with hash 395110508, now seen corresponding path program 1 times [2023-11-17 11:34:41,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:34:41,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883325152] [2023-11-17 11:34:41,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:34:41,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:34:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:34:41,934 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 11:34:41,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:34:41,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883325152] [2023-11-17 11:34:41,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883325152] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:34:41,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:34:41,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 11:34:41,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572903852] [2023-11-17 11:34:41,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:34:41,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:34:41,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:34:41,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:34:41,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:34:41,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 125 [2023-11-17 11:34:41,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 11:34:41,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:34:41,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 125 [2023-11-17 11:34:41,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:34:42,117 INFO L124 PetriNetUnfolderBase]: 405/871 cut-off events. [2023-11-17 11:34:42,117 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:34:42,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1747 conditions, 871 events. 405/871 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4338 event pairs, 67 based on Foata normal form. 17/829 useless extension candidates. Maximal degree in co-relation 1738. Up to 472 conditions per place. [2023-11-17 11:34:42,122 INFO L140 encePairwiseOnDemand]: 114/125 looper letters, 57 selfloop transitions, 5 changer transitions 0/62 dead transitions. [2023-11-17 11:34:42,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 62 transitions, 251 flow [2023-11-17 11:34:42,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:34:42,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:34:42,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2023-11-17 11:34:42,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41333333333333333 [2023-11-17 11:34:42,131 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 155 transitions. [2023-11-17 11:34:42,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 155 transitions. [2023-11-17 11:34:42,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:34:42,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 155 transitions. [2023-11-17 11:34:42,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 11:34:42,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 11:34:42,137 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 11:34:42,138 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 79 flow. Second operand 3 states and 155 transitions. [2023-11-17 11:34:42,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 62 transitions, 251 flow [2023-11-17 11:34:42,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 62 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:34:42,141 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 110 flow [2023-11-17 11:34:42,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2023-11-17 11:34:42,145 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2023-11-17 11:34:42,145 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 110 flow [2023-11-17 11:34:42,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 11:34:42,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:34:42,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:34:42,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:34:42,146 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-17 11:34:42,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:34:42,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1778637413, now seen corresponding path program 1 times [2023-11-17 11:34:42,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:34:42,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105401319] [2023-11-17 11:34:42,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:34:42,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:34:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:34:42,221 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 11:34:42,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:34:42,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105401319] [2023-11-17 11:34:42,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105401319] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:34:42,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:34:42,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:34:42,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718582595] [2023-11-17 11:34:42,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:34:42,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:34:42,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:34:42,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:34:42,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:34:42,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 125 [2023-11-17 11:34:42,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 11:34:42,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:34:42,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 125 [2023-11-17 11:34:42,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:34:42,346 INFO L124 PetriNetUnfolderBase]: 438/950 cut-off events. [2023-11-17 11:34:42,346 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2023-11-17 11:34:42,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2130 conditions, 950 events. 438/950 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4759 event pairs, 237 based on Foata normal form. 6/922 useless extension candidates. Maximal degree in co-relation 2118. Up to 809 conditions per place. [2023-11-17 11:34:42,350 INFO L140 encePairwiseOnDemand]: 113/125 looper letters, 59 selfloop transitions, 12 changer transitions 0/71 dead transitions. [2023-11-17 11:34:42,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 71 transitions, 344 flow [2023-11-17 11:34:42,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:34:42,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:34:42,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2023-11-17 11:34:42,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4053333333333333 [2023-11-17 11:34:42,355 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 152 transitions. [2023-11-17 11:34:42,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 152 transitions. [2023-11-17 11:34:42,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:34:42,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 152 transitions. [2023-11-17 11:34:42,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states 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 11:34:42,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 11:34:42,359 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 11:34:42,359 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 110 flow. Second operand 3 states and 152 transitions. [2023-11-17 11:34:42,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 71 transitions, 344 flow [2023-11-17 11:34:42,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 71 transitions, 326 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:34:42,363 INFO L231 Difference]: Finished difference. Result has 43 places, 48 transitions, 176 flow [2023-11-17 11:34:42,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=43, PETRI_TRANSITIONS=48} [2023-11-17 11:34:42,364 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2023-11-17 11:34:42,364 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 48 transitions, 176 flow [2023-11-17 11:34:42,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 11:34:42,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:34:42,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:34:42,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:34:42,364 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-17 11:34:42,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:34:42,366 INFO L85 PathProgramCache]: Analyzing trace with hash -874998562, now seen corresponding path program 1 times [2023-11-17 11:34:42,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:34:42,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48628608] [2023-11-17 11:34:42,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:34:42,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:34:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:34:42,501 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 11:34:42,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:34:42,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48628608] [2023-11-17 11:34:42,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48628608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:34:42,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:34:42,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:34:42,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587759350] [2023-11-17 11:34:42,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:34:42,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:34:42,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:34:42,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:34:42,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:34:42,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 125 [2023-11-17 11:34:42,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 48 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 11:34:42,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:34:42,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 125 [2023-11-17 11:34:42,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:34:42,592 INFO L124 PetriNetUnfolderBase]: 165/407 cut-off events. [2023-11-17 11:34:42,593 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2023-11-17 11:34:42,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1047 conditions, 407 events. 165/407 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1783 event pairs, 41 based on Foata normal form. 13/395 useless extension candidates. Maximal degree in co-relation 1035. Up to 285 conditions per place. [2023-11-17 11:34:42,595 INFO L140 encePairwiseOnDemand]: 119/125 looper letters, 52 selfloop transitions, 7 changer transitions 3/62 dead transitions. [2023-11-17 11:34:42,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 62 transitions, 327 flow [2023-11-17 11:34:42,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:34:42,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:34:42,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 171 transitions. [2023-11-17 11:34:42,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.342 [2023-11-17 11:34:42,597 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 171 transitions. [2023-11-17 11:34:42,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 171 transitions. [2023-11-17 11:34:42,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:34:42,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 171 transitions. [2023-11-17 11:34:42,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states 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 11:34:42,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 0 states have call successors, (0), 0 states 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 11:34:42,600 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 0 states have call successors, (0), 0 states 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 11:34:42,600 INFO L175 Difference]: Start difference. First operand has 43 places, 48 transitions, 176 flow. Second operand 4 states and 171 transitions. [2023-11-17 11:34:42,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 62 transitions, 327 flow [2023-11-17 11:34:42,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 62 transitions, 312 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-17 11:34:42,603 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 148 flow [2023-11-17 11:34:42,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2023-11-17 11:34:42,603 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2023-11-17 11:34:42,603 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 148 flow [2023-11-17 11:34:42,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 11:34:42,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:34:42,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:34:42,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 11:34:42,604 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-17 11:34:42,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:34:42,604 INFO L85 PathProgramCache]: Analyzing trace with hash 776093853, now seen corresponding path program 1 times [2023-11-17 11:34:42,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:34:42,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18860750] [2023-11-17 11:34:42,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:34:42,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:34:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:34:42,644 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 11:34:42,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:34:42,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18860750] [2023-11-17 11:34:42,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18860750] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:34:42,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:34:42,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 11:34:42,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081896730] [2023-11-17 11:34:42,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:34:42,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:34:42,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:34:42,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:34:42,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:34:42,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 125 [2023-11-17 11:34:42,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 11:34:42,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:34:42,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 125 [2023-11-17 11:34:42,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:34:42,713 INFO L124 PetriNetUnfolderBase]: 174/436 cut-off events. [2023-11-17 11:34:42,713 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2023-11-17 11:34:42,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1181 conditions, 436 events. 174/436 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1829 event pairs, 59 based on Foata normal form. 0/415 useless extension candidates. Maximal degree in co-relation 1167. Up to 255 conditions per place. [2023-11-17 11:34:42,715 INFO L140 encePairwiseOnDemand]: 120/125 looper letters, 50 selfloop transitions, 2 changer transitions 9/61 dead transitions. [2023-11-17 11:34:42,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 61 transitions, 347 flow [2023-11-17 11:34:42,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:34:42,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:34:42,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 139 transitions. [2023-11-17 11:34:42,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37066666666666664 [2023-11-17 11:34:42,716 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 139 transitions. [2023-11-17 11:34:42,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 139 transitions. [2023-11-17 11:34:42,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:34:42,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 139 transitions. [2023-11-17 11:34:42,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states 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 11:34:42,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 11:34:42,718 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 11:34:42,718 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 148 flow. Second operand 3 states and 139 transitions. [2023-11-17 11:34:42,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 61 transitions, 347 flow [2023-11-17 11:34:42,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 61 transitions, 346 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:34:42,719 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 161 flow [2023-11-17 11:34:42,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2023-11-17 11:34:42,720 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places. [2023-11-17 11:34:42,720 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 161 flow [2023-11-17 11:34:42,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 11:34:42,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:34:42,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:34:42,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 11:34:42,721 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-17 11:34:42,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:34:42,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1370199092, now seen corresponding path program 1 times [2023-11-17 11:34:42,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:34:42,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854621041] [2023-11-17 11:34:42,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:34:42,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:34:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:34:42,798 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 11:34:42,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:34:42,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854621041] [2023-11-17 11:34:42,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854621041] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:34:42,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:34:42,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:34:42,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634147574] [2023-11-17 11:34:42,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:34:42,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:34:42,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:34:42,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:34:42,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:34:42,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 125 [2023-11-17 11:34:42,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 11:34:42,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:34:42,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 125 [2023-11-17 11:34:42,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:34:42,867 INFO L124 PetriNetUnfolderBase]: 131/353 cut-off events. [2023-11-17 11:34:42,867 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2023-11-17 11:34:42,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1007 conditions, 353 events. 131/353 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1413 event pairs, 117 based on Foata normal form. 11/364 useless extension candidates. Maximal degree in co-relation 990. Up to 336 conditions per place. [2023-11-17 11:34:42,869 INFO L140 encePairwiseOnDemand]: 120/125 looper letters, 37 selfloop transitions, 3 changer transitions 0/40 dead transitions. [2023-11-17 11:34:42,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 40 transitions, 239 flow [2023-11-17 11:34:42,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:34:42,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:34:42,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 148 transitions. [2023-11-17 11:34:42,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.296 [2023-11-17 11:34:42,873 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 148 transitions. [2023-11-17 11:34:42,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 148 transitions. [2023-11-17 11:34:42,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:34:42,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 148 transitions. [2023-11-17 11:34:42,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 11:34:42,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 0 states have call successors, (0), 0 states 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 11:34:42,874 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 0 states have call successors, (0), 0 states 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 11:34:42,875 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 161 flow. Second operand 4 states and 148 transitions. [2023-11-17 11:34:42,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 40 transitions, 239 flow [2023-11-17 11:34:42,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 40 transitions, 235 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:34:42,876 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 164 flow [2023-11-17 11:34:42,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2023-11-17 11:34:42,878 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 10 predicate places. [2023-11-17 11:34:42,878 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 164 flow [2023-11-17 11:34:42,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 11:34:42,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:34:42,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:34:42,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 11:34:42,878 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-17 11:34:42,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:34:42,879 INFO L85 PathProgramCache]: Analyzing trace with hash -436255221, now seen corresponding path program 1 times [2023-11-17 11:34:42,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:34:42,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492576133] [2023-11-17 11:34:42,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:34:42,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:34:42,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:34:42,944 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 11:34:42,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:34:42,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492576133] [2023-11-17 11:34:42,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492576133] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:34:42,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:34:42,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:34:42,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758807309] [2023-11-17 11:34:42,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:34:42,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:34:42,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:34:42,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:34:42,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:34:42,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 125 [2023-11-17 11:34:42,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 11:34:42,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:34:42,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 125 [2023-11-17 11:34:42,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:34:43,027 INFO L124 PetriNetUnfolderBase]: 54/243 cut-off events. [2023-11-17 11:34:43,027 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2023-11-17 11:34:43,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 714 conditions, 243 events. 54/243 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1011 event pairs, 19 based on Foata normal form. 47/290 useless extension candidates. Maximal degree in co-relation 696. Up to 131 conditions per place. [2023-11-17 11:34:43,028 INFO L140 encePairwiseOnDemand]: 107/125 looper letters, 29 selfloop transitions, 20 changer transitions 8/57 dead transitions. [2023-11-17 11:34:43,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 57 transitions, 362 flow [2023-11-17 11:34:43,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:34:43,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:34:43,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 141 transitions. [2023-11-17 11:34:43,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.376 [2023-11-17 11:34:43,030 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 141 transitions. [2023-11-17 11:34:43,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 141 transitions. [2023-11-17 11:34:43,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:34:43,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 141 transitions. [2023-11-17 11:34:43,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 11:34:43,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 11:34:43,032 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 11:34:43,032 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 164 flow. Second operand 3 states and 141 transitions. [2023-11-17 11:34:43,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 57 transitions, 362 flow [2023-11-17 11:34:43,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 57 transitions, 346 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-11-17 11:34:43,034 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 246 flow [2023-11-17 11:34:43,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2023-11-17 11:34:43,036 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 10 predicate places. [2023-11-17 11:34:43,036 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 246 flow [2023-11-17 11:34:43,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 11:34:43,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:34:43,037 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] [2023-11-17 11:34:43,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 11:34:43,037 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-17 11:34:43,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:34:43,037 INFO L85 PathProgramCache]: Analyzing trace with hash -639903180, now seen corresponding path program 1 times [2023-11-17 11:34:43,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:34:43,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985016548] [2023-11-17 11:34:43,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:34:43,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:34:43,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:34:43,247 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 11:34:43,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:34:43,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985016548] [2023-11-17 11:34:43,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985016548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:34:43,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:34:43,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:34:43,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123780617] [2023-11-17 11:34:43,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:34:43,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:34:43,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:34:43,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:34:43,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:34:43,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 125 [2023-11-17 11:34:43,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 246 flow. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states 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 11:34:43,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:34:43,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 125 [2023-11-17 11:34:43,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:34:43,306 INFO L124 PetriNetUnfolderBase]: 43/187 cut-off events. [2023-11-17 11:34:43,306 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2023-11-17 11:34:43,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 187 events. 43/187 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 672 event pairs, 11 based on Foata normal form. 2/189 useless extension candidates. Maximal degree in co-relation 666. Up to 176 conditions per place. [2023-11-17 11:34:43,307 INFO L140 encePairwiseOnDemand]: 121/125 looper letters, 40 selfloop transitions, 4 changer transitions 6/50 dead transitions. [2023-11-17 11:34:43,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 50 transitions, 382 flow [2023-11-17 11:34:43,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:34:43,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:34:43,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 153 transitions. [2023-11-17 11:34:43,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.306 [2023-11-17 11:34:43,308 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 153 transitions. [2023-11-17 11:34:43,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 153 transitions. [2023-11-17 11:34:43,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:34:43,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 153 transitions. [2023-11-17 11:34:43,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 11:34:43,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 0 states have call successors, (0), 0 states 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 11:34:43,309 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 0 states have call successors, (0), 0 states 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 11:34:43,309 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 246 flow. Second operand 4 states and 153 transitions. [2023-11-17 11:34:43,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 50 transitions, 382 flow [2023-11-17 11:34:43,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 50 transitions, 353 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-17 11:34:43,311 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 200 flow [2023-11-17 11:34:43,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-11-17 11:34:43,311 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 10 predicate places. [2023-11-17 11:34:43,311 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 200 flow [2023-11-17 11:34:43,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states 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 11:34:43,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:34:43,312 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, 1, 1] [2023-11-17 11:34:43,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 11:34:43,312 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-17 11:34:43,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:34:43,312 INFO L85 PathProgramCache]: Analyzing trace with hash -625490452, now seen corresponding path program 1 times [2023-11-17 11:34:43,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:34:43,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897280150] [2023-11-17 11:34:43,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:34:43,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:34:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:34:43,436 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 11:34:43,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:34:43,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897280150] [2023-11-17 11:34:43,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897280150] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:34:43,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:34:43,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 11:34:43,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544104819] [2023-11-17 11:34:43,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:34:43,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 11:34:43,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:34:43,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 11:34:43,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-17 11:34:43,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 125 [2023-11-17 11:34:43,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 200 flow. Second operand has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 11:34:43,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:34:43,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 125 [2023-11-17 11:34:43,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:34:43,486 INFO L124 PetriNetUnfolderBase]: 19/98 cut-off events. [2023-11-17 11:34:43,486 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2023-11-17 11:34:43,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 98 events. 19/98 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 242 event pairs, 2 based on Foata normal form. 12/110 useless extension candidates. Maximal degree in co-relation 339. Up to 65 conditions per place. [2023-11-17 11:34:43,486 INFO L140 encePairwiseOnDemand]: 121/125 looper letters, 33 selfloop transitions, 8 changer transitions 0/41 dead transitions. [2023-11-17 11:34:43,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 41 transitions, 305 flow [2023-11-17 11:34:43,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:34:43,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:34:43,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2023-11-17 11:34:43,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.292 [2023-11-17 11:34:43,487 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 146 transitions. [2023-11-17 11:34:43,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 146 transitions. [2023-11-17 11:34:43,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:34:43,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 146 transitions. [2023-11-17 11:34:43,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 11:34:43,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 0 states have call successors, (0), 0 states 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 11:34:43,489 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 0 states have call successors, (0), 0 states 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 11:34:43,489 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 200 flow. Second operand 4 states and 146 transitions. [2023-11-17 11:34:43,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 41 transitions, 305 flow [2023-11-17 11:34:43,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 41 transitions, 283 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-17 11:34:43,490 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 191 flow [2023-11-17 11:34:43,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=191, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2023-11-17 11:34:43,491 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2023-11-17 11:34:43,491 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 191 flow [2023-11-17 11:34:43,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 11:34:43,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:34:43,491 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, 1, 1, 1, 1, 1, 1] [2023-11-17 11:34:43,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 11:34:43,491 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-17 11:34:43,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:34:43,491 INFO L85 PathProgramCache]: Analyzing trace with hash -585108817, now seen corresponding path program 1 times [2023-11-17 11:34:43,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:34:43,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311263000] [2023-11-17 11:34:43,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:34:43,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:34:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:34:43,652 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 11:34:43,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:34:43,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311263000] [2023-11-17 11:34:43,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311263000] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:34:43,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:34:43,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:34:43,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448837711] [2023-11-17 11:34:43,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:34:43,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:34:43,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:34:43,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:34:43,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:34:43,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 125 [2023-11-17 11:34:43,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 191 flow. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 11:34:43,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:34:43,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 125 [2023-11-17 11:34:43,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:34:43,692 INFO L124 PetriNetUnfolderBase]: 19/96 cut-off events. [2023-11-17 11:34:43,692 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2023-11-17 11:34:43,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 96 events. 19/96 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 237 event pairs, 8 based on Foata normal form. 2/98 useless extension candidates. Maximal degree in co-relation 318. Up to 77 conditions per place. [2023-11-17 11:34:43,692 INFO L140 encePairwiseOnDemand]: 121/125 looper letters, 0 selfloop transitions, 0 changer transitions 40/40 dead transitions. [2023-11-17 11:34:43,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 40 transitions, 293 flow [2023-11-17 11:34:43,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:34:43,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:34:43,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 144 transitions. [2023-11-17 11:34:43,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.288 [2023-11-17 11:34:43,694 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 144 transitions. [2023-11-17 11:34:43,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 144 transitions. [2023-11-17 11:34:43,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:34:43,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 144 transitions. [2023-11-17 11:34:43,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 11:34:43,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 0 states have call successors, (0), 0 states 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 11:34:43,695 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 0 states have call successors, (0), 0 states 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 11:34:43,695 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 191 flow. Second operand 4 states and 144 transitions. [2023-11-17 11:34:43,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 40 transitions, 293 flow [2023-11-17 11:34:43,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 40 transitions, 283 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 11:34:43,697 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2023-11-17 11:34:43,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2023-11-17 11:34:43,698 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2023-11-17 11:34:43,699 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2023-11-17 11:34:43,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 11:34:43,702 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-11-17 11:34:43,702 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-17 11:34:43,702 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-11-17 11:34:43,702 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-11-17 11:34:43,702 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-11-17 11:34:43,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 11:34:43,703 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:34:43,705 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:34:43,705 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:34:43,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:34:43 BasicIcfg [2023-11-17 11:34:43,707 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:34:43,708 INFO L158 Benchmark]: Toolchain (without parser) took 3869.67ms. Allocated memory was 197.1MB in the beginning and 320.9MB in the end (delta: 123.7MB). Free memory was 156.2MB in the beginning and 241.0MB in the end (delta: -84.8MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. [2023-11-17 11:34:43,708 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 197.1MB. Free memory is still 144.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:34:43,708 INFO L158 Benchmark]: CACSL2BoogieTranslator took 382.93ms. Allocated memory is still 197.1MB. Free memory was 155.9MB in the beginning and 136.0MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-17 11:34:43,708 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.33ms. Allocated memory is still 197.1MB. Free memory was 136.0MB in the beginning and 133.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:34:43,708 INFO L158 Benchmark]: Boogie Preprocessor took 18.04ms. Allocated memory is still 197.1MB. Free memory was 133.8MB in the beginning and 132.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:34:43,708 INFO L158 Benchmark]: RCFGBuilder took 444.24ms. Allocated memory was 197.1MB in the beginning and 267.4MB in the end (delta: 70.3MB). Free memory was 132.1MB in the beginning and 229.2MB in the end (delta: -97.1MB). Peak memory consumption was 31.2MB. Max. memory is 8.0GB. [2023-11-17 11:34:43,710 INFO L158 Benchmark]: TraceAbstraction took 2967.16ms. Allocated memory was 267.4MB in the beginning and 320.9MB in the end (delta: 53.5MB). Free memory was 228.7MB in the beginning and 241.0MB in the end (delta: -12.3MB). Peak memory consumption was 41.2MB. Max. memory is 8.0GB. [2023-11-17 11:34:43,711 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 197.1MB. Free memory is still 144.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 382.93ms. Allocated memory is still 197.1MB. Free memory was 155.9MB in the beginning and 136.0MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 53.33ms. Allocated memory is still 197.1MB. Free memory was 136.0MB in the beginning and 133.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.04ms. Allocated memory is still 197.1MB. Free memory was 133.8MB in the beginning and 132.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 444.24ms. Allocated memory was 197.1MB in the beginning and 267.4MB in the end (delta: 70.3MB). Free memory was 132.1MB in the beginning and 229.2MB in the end (delta: -97.1MB). Peak memory consumption was 31.2MB. Max. memory is 8.0GB. * TraceAbstraction took 2967.16ms. Allocated memory was 267.4MB in the beginning and 320.9MB in the end (delta: 53.5MB). Free memory was 228.7MB in the beginning and 241.0MB in the end (delta: -12.3MB). Peak memory consumption was 41.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.8s, 66 PlacesBefore, 39 PlacesAfterwards, 65 TransitionsBefore, 38 TransitionsAfterwards, 1900 CoEnabledTransitionPairs, 7 FixpointIterations, 0 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 0 ChoiceCompositions, 50 TotalNumberOfCompositions, 9648 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2978, independent: 2552, independent conditional: 0, independent unconditional: 2552, dependent: 426, dependent conditional: 0, dependent unconditional: 426, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1393, independent: 1309, independent conditional: 0, independent unconditional: 1309, dependent: 84, dependent conditional: 0, dependent unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1393, independent: 1179, independent conditional: 0, independent unconditional: 1179, dependent: 214, dependent conditional: 0, dependent unconditional: 214, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 214, independent: 130, independent conditional: 0, independent unconditional: 130, dependent: 84, dependent conditional: 0, dependent unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 232, independent: 116, independent conditional: 0, independent unconditional: 116, dependent: 116, dependent conditional: 0, dependent unconditional: 116, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2978, independent: 1243, independent conditional: 0, independent unconditional: 1243, dependent: 342, dependent conditional: 0, dependent unconditional: 342, unknown: 1393, unknown conditional: 0, unknown unconditional: 1393] , Statistics on independence cache: Total cache size (in pairs): 263, Positive cache size: 210, Positive conditional cache size: 0, Positive unconditional cache size: 210, Negative cache size: 53, Negative conditional cache size: 0, Negative unconditional cache size: 53, 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 3 procedures, 99 locations, 5 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: 2.9s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 178 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 178 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 83 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 625 IncrementalHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 83 mSolverCounterUnsat, 0 mSDtfsCounter, 625 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=246occurred 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, 0.9s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 129 ConstructedInterpolants, 0 QuantifiedInterpolants, 665 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 11:34:43,729 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...