/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_40-traces-ex-6_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 11:16:54,258 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 11:16:54,331 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 11:16:54,337 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 11:16:54,337 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 11:16:54,365 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 11:16:54,365 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 11:16:54,365 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 11:16:54,366 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 11:16:54,371 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 11:16:54,371 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 11:16:54,371 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 11:16:54,372 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 11:16:54,372 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 11:16:54,372 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 11:16:54,372 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 11:16:54,372 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 11:16:54,372 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 11:16:54,373 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 11:16:54,373 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 11:16:54,373 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 11:16:54,373 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 11:16:54,373 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 11:16:54,373 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 11:16:54,374 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 11:16:54,374 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 11:16:54,374 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 11:16:54,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:16:54,374 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 11:16:54,374 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 11:16:54,374 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 11:16:54,375 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 11:16:54,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 11:16:54,375 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 11:16:54,375 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 11:16:54,375 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 11:16:54,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 11:16:54,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 11:16:54,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 11:16:54,641 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 11:16:54,641 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 11:16:54,642 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_40-traces-ex-6_true.i [2023-08-27 11:16:55,627 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 11:16:55,859 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 11:16:55,860 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_40-traces-ex-6_true.i [2023-08-27 11:16:55,883 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/851cb9178/d92a9bd48581448e9d9c410be7727942/FLAG378604596 [2023-08-27 11:16:55,891 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/851cb9178/d92a9bd48581448e9d9c410be7727942 [2023-08-27 11:16:55,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 11:16:55,893 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 11:16:55,894 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 11:16:55,894 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 11:16:55,896 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 11:16:55,896 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:16:55" (1/1) ... [2023-08-27 11:16:55,896 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45aa5e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:16:55, skipping insertion in model container [2023-08-27 11:16:55,897 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:16:55" (1/1) ... [2023-08-27 11:16:55,921 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 11:16:56,076 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:16:56,085 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 11:16:56,110 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-27 11:16:56,111 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-27 11:16:56,119 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:16:56,159 INFO L206 MainTranslator]: Completed translation [2023-08-27 11:16:56,160 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:16:56 WrapperNode [2023-08-27 11:16:56,160 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 11:16:56,161 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 11:16:56,161 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 11:16:56,161 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 11:16:56,165 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:16:56" (1/1) ... [2023-08-27 11:16:56,186 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:16:56" (1/1) ... [2023-08-27 11:16:56,198 INFO L138 Inliner]: procedures = 162, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 51 [2023-08-27 11:16:56,198 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 11:16:56,199 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 11:16:56,199 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 11:16:56,199 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 11:16:56,204 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:16:56" (1/1) ... [2023-08-27 11:16:56,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:16:56" (1/1) ... [2023-08-27 11:16:56,207 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:16:56" (1/1) ... [2023-08-27 11:16:56,208 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:16:56" (1/1) ... [2023-08-27 11:16:56,221 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:16:56" (1/1) ... [2023-08-27 11:16:56,222 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:16:56" (1/1) ... [2023-08-27 11:16:56,222 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:16:56" (1/1) ... [2023-08-27 11:16:56,223 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:16:56" (1/1) ... [2023-08-27 11:16:56,224 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 11:16:56,225 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 11:16:56,225 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 11:16:56,225 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 11:16:56,225 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:16:56" (1/1) ... [2023-08-27 11:16:56,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:16:56,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:16:56,254 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 11:16:56,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 11:16:56,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 11:16:56,281 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 11:16:56,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 11:16:56,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 11:16:56,282 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-27 11:16:56,282 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-27 11:16:56,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 11:16:56,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 11:16:56,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 11:16:56,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 11:16:56,284 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 11:16:56,396 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 11:16:56,398 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 11:16:56,544 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 11:16:56,548 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 11:16:56,549 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 11:16:56,550 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:16:56 BoogieIcfgContainer [2023-08-27 11:16:56,550 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 11:16:56,551 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 11:16:56,552 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 11:16:56,554 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 11:16:56,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 11:16:55" (1/3) ... [2023-08-27 11:16:56,554 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35c7f22c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:16:56, skipping insertion in model container [2023-08-27 11:16:56,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:16:56" (2/3) ... [2023-08-27 11:16:56,555 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35c7f22c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:16:56, skipping insertion in model container [2023-08-27 11:16:56,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:16:56" (3/3) ... [2023-08-27 11:16:56,555 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_40-traces-ex-6_true.i [2023-08-27 11:16:56,573 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 11:16:56,573 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-27 11:16:56,573 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 11:16:56,614 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 11:16:56,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 65 transitions, 135 flow [2023-08-27 11:16:56,662 INFO L124 PetriNetUnfolderBase]: 2/64 cut-off events. [2023-08-27 11:16:56,662 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:16:56,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 64 events. 2/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 39 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2023-08-27 11:16:56,666 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 65 transitions, 135 flow [2023-08-27 11:16:56,668 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 54 transitions, 111 flow [2023-08-27 11:16:56,671 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:16:56,677 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 54 transitions, 111 flow [2023-08-27 11:16:56,679 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 54 transitions, 111 flow [2023-08-27 11:16:56,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 54 transitions, 111 flow [2023-08-27 11:16:56,690 INFO L124 PetriNetUnfolderBase]: 0/54 cut-off events. [2023-08-27 11:16:56,690 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:16:56,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 54 events. 0/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 22 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-27 11:16:56,691 INFO L119 LiptonReduction]: Number of co-enabled transitions 308 [2023-08-27 11:16:58,404 INFO L134 LiptonReduction]: Checked pairs total: 730 [2023-08-27 11:16:58,404 INFO L136 LiptonReduction]: Total number of compositions: 42 [2023-08-27 11:16:58,418 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:16:58,422 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1d794cf3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:16:58,422 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-27 11:16:58,425 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:16:58,426 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-08-27 11:16:58,426 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:16:58,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:16:58,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 11:16:58,427 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:16:58,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:16:58,430 INFO L85 PathProgramCache]: Analyzing trace with hash -2032081780, now seen corresponding path program 1 times [2023-08-27 11:16:58,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:16:58,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738447655] [2023-08-27 11:16:58,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:16:58,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:16:58,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:16:58,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:16:58,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:16:58,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738447655] [2023-08-27 11:16:58,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738447655] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:16:58,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:16:58,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:16:58,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212249764] [2023-08-27 11:16:58,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:16:58,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:16:58,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:16:58,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:16:58,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:16:58,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 107 [2023-08-27 11:16:58,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 12 transitions, 27 flow. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:58,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:16:58,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 107 [2023-08-27 11:16:58,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:16:58,754 INFO L124 PetriNetUnfolderBase]: 15/47 cut-off events. [2023-08-27 11:16:58,754 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:16:58,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 47 events. 15/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 95 event pairs, 12 based on Foata normal form. 5/52 useless extension candidates. Maximal degree in co-relation 86. Up to 35 conditions per place. [2023-08-27 11:16:58,757 INFO L140 encePairwiseOnDemand]: 103/107 looper letters, 11 selfloop transitions, 3 changer transitions 0/15 dead transitions. [2023-08-27 11:16:58,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 15 transitions, 61 flow [2023-08-27 11:16:58,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:16:58,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:16:58,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 186 transitions. [2023-08-27 11:16:58,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5794392523364486 [2023-08-27 11:16:58,767 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 186 transitions. [2023-08-27 11:16:58,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 186 transitions. [2023-08-27 11:16:58,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:16:58,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 186 transitions. [2023-08-27 11:16:58,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:58,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:58,780 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:58,781 INFO L175 Difference]: Start difference. First operand has 16 places, 12 transitions, 27 flow. Second operand 3 states and 186 transitions. [2023-08-27 11:16:58,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 15 transitions, 61 flow [2023-08-27 11:16:58,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 15 transitions, 60 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:16:58,784 INFO L231 Difference]: Finished difference. Result has 18 places, 12 transitions, 37 flow [2023-08-27 11:16:58,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=37, PETRI_PLACES=18, PETRI_TRANSITIONS=12} [2023-08-27 11:16:58,787 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, 2 predicate places. [2023-08-27 11:16:58,788 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 12 transitions, 37 flow [2023-08-27 11:16:58,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:58,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:16:58,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:16:58,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 11:16:58,788 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:16:58,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:16:58,789 INFO L85 PathProgramCache]: Analyzing trace with hash -318410275, now seen corresponding path program 1 times [2023-08-27 11:16:58,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:16:58,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305015949] [2023-08-27 11:16:58,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:16:58,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:16:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:16:58,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:16:58,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:16:58,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305015949] [2023-08-27 11:16:58,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305015949] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:16:58,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:16:58,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:16:58,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482581145] [2023-08-27 11:16:58,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:16:58,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:16:58,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:16:58,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:16:58,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:16:58,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 107 [2023-08-27 11:16:58,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 12 transitions, 37 flow. Second operand has 3 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) [2023-08-27 11:16:58,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:16:58,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 107 [2023-08-27 11:16:58,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:16:58,940 INFO L124 PetriNetUnfolderBase]: 5/32 cut-off events. [2023-08-27 11:16:58,940 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-27 11:16:58,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 32 events. 5/32 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 59 event pairs, 2 based on Foata normal form. 4/36 useless extension candidates. Maximal degree in co-relation 64. Up to 17 conditions per place. [2023-08-27 11:16:58,940 INFO L140 encePairwiseOnDemand]: 102/107 looper letters, 7 selfloop transitions, 4 changer transitions 3/16 dead transitions. [2023-08-27 11:16:58,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 16 transitions, 75 flow [2023-08-27 11:16:58,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:16:58,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:16:58,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 160 transitions. [2023-08-27 11:16:58,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4984423676012461 [2023-08-27 11:16:58,942 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 160 transitions. [2023-08-27 11:16:58,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 160 transitions. [2023-08-27 11:16:58,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:16:58,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 160 transitions. [2023-08-27 11:16:58,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 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) [2023-08-27 11:16:58,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:58,944 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:58,944 INFO L175 Difference]: Start difference. First operand has 18 places, 12 transitions, 37 flow. Second operand 3 states and 160 transitions. [2023-08-27 11:16:58,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 16 transitions, 75 flow [2023-08-27 11:16:58,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 16 transitions, 69 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:16:58,945 INFO L231 Difference]: Finished difference. Result has 19 places, 12 transitions, 45 flow [2023-08-27 11:16:58,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=45, PETRI_PLACES=19, PETRI_TRANSITIONS=12} [2023-08-27 11:16:58,946 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, 3 predicate places. [2023-08-27 11:16:58,946 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 12 transitions, 45 flow [2023-08-27 11:16:58,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-08-27 11:16:58,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:16:58,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:16:58,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 11:16:58,947 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:16:58,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:16:58,947 INFO L85 PathProgramCache]: Analyzing trace with hash -184812055, now seen corresponding path program 2 times [2023-08-27 11:16:58,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:16:58,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068918489] [2023-08-27 11:16:58,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:16:58,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:16:58,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:16:59,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:16:59,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:16:59,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068918489] [2023-08-27 11:16:59,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068918489] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:16:59,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:16:59,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 11:16:59,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133210383] [2023-08-27 11:16:59,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:16:59,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:16:59,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:16:59,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:16:59,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:16:59,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 107 [2023-08-27 11:16:59,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 12 transitions, 45 flow. Second operand has 5 states, 5 states have (on average 43.6) internal successors, (218), 5 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:59,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:16:59,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 107 [2023-08-27 11:16:59,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:16:59,130 INFO L124 PetriNetUnfolderBase]: 1/22 cut-off events. [2023-08-27 11:16:59,131 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2023-08-27 11:16:59,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 22 events. 1/22 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 21 event pairs, 0 based on Foata normal form. 1/23 useless extension candidates. Maximal degree in co-relation 55. Up to 11 conditions per place. [2023-08-27 11:16:59,131 INFO L140 encePairwiseOnDemand]: 103/107 looper letters, 6 selfloop transitions, 4 changer transitions 2/14 dead transitions. [2023-08-27 11:16:59,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 14 transitions, 78 flow [2023-08-27 11:16:59,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:16:59,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:16:59,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 181 transitions. [2023-08-27 11:16:59,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42289719626168226 [2023-08-27 11:16:59,132 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 181 transitions. [2023-08-27 11:16:59,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 181 transitions. [2023-08-27 11:16:59,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:16:59,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 181 transitions. [2023-08-27 11:16:59,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:59,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:59,134 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:59,134 INFO L175 Difference]: Start difference. First operand has 19 places, 12 transitions, 45 flow. Second operand 4 states and 181 transitions. [2023-08-27 11:16:59,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 14 transitions, 78 flow [2023-08-27 11:16:59,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 14 transitions, 68 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:16:59,135 INFO L231 Difference]: Finished difference. Result has 20 places, 12 transitions, 45 flow [2023-08-27 11:16:59,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=45, PETRI_PLACES=20, PETRI_TRANSITIONS=12} [2023-08-27 11:16:59,136 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, 4 predicate places. [2023-08-27 11:16:59,136 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 12 transitions, 45 flow [2023-08-27 11:16:59,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.6) internal successors, (218), 5 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:59,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:16:59,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:16:59,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 11:16:59,137 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:16:59,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:16:59,137 INFO L85 PathProgramCache]: Analyzing trace with hash -2062302472, now seen corresponding path program 1 times [2023-08-27 11:16:59,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:16:59,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056742552] [2023-08-27 11:16:59,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:16:59,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:16:59,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:16:59,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:16:59,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:16:59,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056742552] [2023-08-27 11:16:59,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056742552] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:16:59,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:16:59,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:16:59,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423368705] [2023-08-27 11:16:59,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:16:59,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:16:59,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:16:59,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:16:59,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:16:59,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 107 [2023-08-27 11:16:59,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 12 transitions, 45 flow. Second operand has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:59,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:16:59,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 107 [2023-08-27 11:16:59,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:16:59,226 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-08-27 11:16:59,226 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 11:16:59,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 15 events. 0/15 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 1/16 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2023-08-27 11:16:59,226 INFO L140 encePairwiseOnDemand]: 102/107 looper letters, 0 selfloop transitions, 0 changer transitions 11/11 dead transitions. [2023-08-27 11:16:59,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 11 transitions, 59 flow [2023-08-27 11:16:59,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:16:59,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:16:59,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 178 transitions. [2023-08-27 11:16:59,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4158878504672897 [2023-08-27 11:16:59,227 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 178 transitions. [2023-08-27 11:16:59,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 178 transitions. [2023-08-27 11:16:59,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:16:59,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 178 transitions. [2023-08-27 11:16:59,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:59,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:59,229 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:59,229 INFO L175 Difference]: Start difference. First operand has 20 places, 12 transitions, 45 flow. Second operand 4 states and 178 transitions. [2023-08-27 11:16:59,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 11 transitions, 59 flow [2023-08-27 11:16:59,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 11 transitions, 50 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-27 11:16:59,229 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-08-27 11:16:59,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2023-08-27 11:16:59,230 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, 3 predicate places. [2023-08-27 11:16:59,230 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-08-27 11:16:59,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:16:59,232 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (1 of 2 remaining) [2023-08-27 11:16:59,232 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-27 11:16:59,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 11:16:59,233 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-08-27 11:16:59,234 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 11:16:59,234 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 11:16:59,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 11:16:59 BasicIcfg [2023-08-27 11:16:59,236 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 11:16:59,237 INFO L158 Benchmark]: Toolchain (without parser) took 3343.67ms. Allocated memory was 379.6MB in the beginning and 507.5MB in the end (delta: 127.9MB). Free memory was 354.4MB in the beginning and 429.9MB in the end (delta: -75.5MB). Peak memory consumption was 51.2MB. Max. memory is 16.0GB. [2023-08-27 11:16:59,237 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 379.6MB. Free memory is still 355.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 11:16:59,237 INFO L158 Benchmark]: CACSL2BoogieTranslator took 266.24ms. Allocated memory is still 379.6MB. Free memory was 354.4MB in the beginning and 335.4MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 11:16:59,238 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.80ms. Allocated memory is still 379.6MB. Free memory was 335.4MB in the beginning and 333.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 11:16:59,238 INFO L158 Benchmark]: Boogie Preprocessor took 25.29ms. Allocated memory is still 379.6MB. Free memory was 333.3MB in the beginning and 332.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 11:16:59,238 INFO L158 Benchmark]: RCFGBuilder took 325.37ms. Allocated memory is still 379.6MB. Free memory was 332.2MB in the beginning and 319.7MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 11:16:59,238 INFO L158 Benchmark]: TraceAbstraction took 2684.98ms. Allocated memory was 379.6MB in the beginning and 507.5MB in the end (delta: 127.9MB). Free memory was 318.8MB in the beginning and 429.9MB in the end (delta: -111.1MB). Peak memory consumption was 15.5MB. Max. memory is 16.0GB. [2023-08-27 11:16:59,240 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 379.6MB. Free memory is still 355.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 266.24ms. Allocated memory is still 379.6MB. Free memory was 354.4MB in the beginning and 335.4MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 37.80ms. Allocated memory is still 379.6MB. Free memory was 335.4MB in the beginning and 333.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 25.29ms. Allocated memory is still 379.6MB. Free memory was 333.3MB in the beginning and 332.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 325.37ms. Allocated memory is still 379.6MB. Free memory was 332.2MB in the beginning and 319.7MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 2684.98ms. Allocated memory was 379.6MB in the beginning and 507.5MB in the end (delta: 127.9MB). Free memory was 318.8MB in the beginning and 429.9MB in the end (delta: -111.1MB). Peak memory consumption was 15.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 58 PlacesBefore, 16 PlacesAfterwards, 54 TransitionsBefore, 12 TransitionsAfterwards, 308 CoEnabledTransitionPairs, 6 FixpointIterations, 27 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 42 TotalNumberOfCompositions, 730 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 342, independent: 243, independent conditional: 0, independent unconditional: 243, dependent: 99, dependent conditional: 0, dependent unconditional: 99, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 159, independent: 142, independent conditional: 0, independent unconditional: 142, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 342, independent: 101, independent conditional: 0, independent unconditional: 101, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 159, unknown conditional: 0, unknown unconditional: 159] , Statistics on independence cache: Total cache size (in pairs): 14, Positive cache size: 6, Positive conditional cache size: 0, Positive unconditional cache size: 6, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 77 locations, 2 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: 2.6s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 70 IncrementalHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 2 mSDtfsCounter, 70 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=2, InterpolantAutomatonStates: 14, 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, 0.4s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 133 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 11:16:59,255 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...