./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Fibonacci03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/Fibonacci03.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be0a584ba9648c80e7a0523ff51ba530f1926c55cecd3c62f2cee05fbbff42e3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 04:03:56,800 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 04:03:56,860 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 04:03:56,864 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 04:03:56,866 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 04:03:56,886 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 04:03:56,887 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 04:03:56,887 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 04:03:56,887 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 04:03:56,888 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 04:03:56,888 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 04:03:56,888 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 04:03:56,888 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 04:03:56,888 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 04:03:56,888 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 04:03:56,888 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 04:03:56,889 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 04:03:56,889 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 04:03:56,889 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 04:03:56,890 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 04:03:56,890 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 04:03:56,890 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 04:03:56,890 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 04:03:56,890 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 04:03:56,890 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 04:03:56,890 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 04:03:56,890 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 04:03:56,890 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 04:03:56,890 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 04:03:56,890 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 04:03:56,890 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 04:03:56,890 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 04:03:56,890 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:03:56,890 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 04:03:56,891 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 04:03:56,891 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 04:03:56,891 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 04:03:56,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:03:56,891 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 04:03:56,891 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 04:03:56,891 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 04:03:56,891 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 04:03:56,891 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 04:03:56,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 04:03:56,891 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 04:03:56,891 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 04:03:56,891 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 04:03:56,891 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 04:03:56,891 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be0a584ba9648c80e7a0523ff51ba530f1926c55cecd3c62f2cee05fbbff42e3 [2025-01-09 04:03:57,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 04:03:57,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 04:03:57,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 04:03:57,088 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 04:03:57,088 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 04:03:57,089 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Fibonacci03.c [2025-01-09 04:03:58,260 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a649afb50/e4169cf8f81a4524bec2f25fab23b93a/FLAGad4abe3b8 [2025-01-09 04:03:58,508 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 04:03:58,509 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive/Fibonacci03.c [2025-01-09 04:03:58,517 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a649afb50/e4169cf8f81a4524bec2f25fab23b93a/FLAGad4abe3b8 [2025-01-09 04:03:58,832 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a649afb50/e4169cf8f81a4524bec2f25fab23b93a [2025-01-09 04:03:58,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 04:03:58,835 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 04:03:58,836 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 04:03:58,836 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 04:03:58,839 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 04:03:58,839 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:03:58" (1/1) ... [2025-01-09 04:03:58,840 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79a7697c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:03:58, skipping insertion in model container [2025-01-09 04:03:58,840 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:03:58" (1/1) ... [2025-01-09 04:03:58,848 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 04:03:58,936 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive/Fibonacci03.c[788,801] [2025-01-09 04:03:58,939 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 04:03:58,948 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 04:03:58,958 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive/Fibonacci03.c[788,801] [2025-01-09 04:03:58,958 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 04:03:58,969 INFO L204 MainTranslator]: Completed translation [2025-01-09 04:03:58,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:03:58 WrapperNode [2025-01-09 04:03:58,971 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 04:03:58,972 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 04:03:58,972 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 04:03:58,972 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 04:03:58,977 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:03:58" (1/1) ... [2025-01-09 04:03:58,981 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:03:58" (1/1) ... [2025-01-09 04:03:58,992 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2025-01-09 04:03:58,993 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 04:03:58,993 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 04:03:58,994 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 04:03:58,994 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 04:03:59,000 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:03:58" (1/1) ... [2025-01-09 04:03:59,000 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:03:58" (1/1) ... [2025-01-09 04:03:59,001 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:03:58" (1/1) ... [2025-01-09 04:03:59,010 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-09 04:03:59,010 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:03:58" (1/1) ... [2025-01-09 04:03:59,010 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:03:58" (1/1) ... [2025-01-09 04:03:59,014 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:03:58" (1/1) ... [2025-01-09 04:03:59,015 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:03:58" (1/1) ... [2025-01-09 04:03:59,016 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:03:58" (1/1) ... [2025-01-09 04:03:59,019 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:03:58" (1/1) ... [2025-01-09 04:03:59,020 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:03:58" (1/1) ... [2025-01-09 04:03:59,021 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 04:03:59,021 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 04:03:59,021 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 04:03:59,021 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 04:03:59,022 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:03:58" (1/1) ... [2025-01-09 04:03:59,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:03:59,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:03:59,051 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 04:03:59,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 04:03:59,074 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2025-01-09 04:03:59,074 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2025-01-09 04:03:59,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 04:03:59,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 04:03:59,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 04:03:59,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 04:03:59,117 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 04:03:59,119 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 04:03:59,192 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2025-01-09 04:03:59,192 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 04:03:59,198 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 04:03:59,198 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 04:03:59,198 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:03:59 BoogieIcfgContainer [2025-01-09 04:03:59,198 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 04:03:59,200 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 04:03:59,200 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 04:03:59,203 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 04:03:59,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:03:58" (1/3) ... [2025-01-09 04:03:59,203 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d69883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:03:59, skipping insertion in model container [2025-01-09 04:03:59,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:03:58" (2/3) ... [2025-01-09 04:03:59,204 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d69883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:03:59, skipping insertion in model container [2025-01-09 04:03:59,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:03:59" (3/3) ... [2025-01-09 04:03:59,204 INFO L128 eAbstractionObserver]: Analyzing ICFG Fibonacci03.c [2025-01-09 04:03:59,214 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 04:03:59,215 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Fibonacci03.c that has 2 procedures, 20 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-01-09 04:03:59,242 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 04:03:59,249 INFO L333 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, 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;@4d375561, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 04:03:59,249 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 04:03:59,251 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-09 04:03:59,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-01-09 04:03:59,255 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:03:59,255 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:03:59,256 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:03:59,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:03:59,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1939714822, now seen corresponding path program 1 times [2025-01-09 04:03:59,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:03:59,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82045680] [2025-01-09 04:03:59,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:03:59,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:03:59,317 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-09 04:03:59,329 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-09 04:03:59,331 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:03:59,331 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:03:59,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 04:03:59,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:03:59,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82045680] [2025-01-09 04:03:59,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82045680] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:03:59,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 04:03:59,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 04:03:59,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128961354] [2025-01-09 04:03:59,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:03:59,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 04:03:59,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:03:59,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 04:03:59,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 04:03:59,447 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 04:03:59,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:03:59,505 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2025-01-09 04:03:59,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 04:03:59,507 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2025-01-09 04:03:59,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:03:59,512 INFO L225 Difference]: With dead ends: 31 [2025-01-09 04:03:59,512 INFO L226 Difference]: Without dead ends: 21 [2025-01-09 04:03:59,513 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 04:03:59,515 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 5 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 04:03:59,516 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 51 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 04:03:59,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2025-01-09 04:03:59,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2025-01-09 04:03:59,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-01-09 04:03:59,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2025-01-09 04:03:59,538 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 11 [2025-01-09 04:03:59,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:03:59,538 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2025-01-09 04:03:59,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 04:03:59,538 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2025-01-09 04:03:59,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-01-09 04:03:59,539 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:03:59,539 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:03:59,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 04:03:59,539 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:03:59,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:03:59,540 INFO L85 PathProgramCache]: Analyzing trace with hash 692912656, now seen corresponding path program 1 times [2025-01-09 04:03:59,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:03:59,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505605096] [2025-01-09 04:03:59,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:03:59,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:03:59,544 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-09 04:03:59,548 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-09 04:03:59,549 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:03:59,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:03:59,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 04:03:59,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:03:59,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505605096] [2025-01-09 04:03:59,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505605096] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:03:59,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 04:03:59,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 04:03:59,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485994259] [2025-01-09 04:03:59,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:03:59,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 04:03:59,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:03:59,590 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 04:03:59,591 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 04:03:59,591 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 04:03:59,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:03:59,628 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2025-01-09 04:03:59,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 04:03:59,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2025-01-09 04:03:59,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:03:59,629 INFO L225 Difference]: With dead ends: 25 [2025-01-09 04:03:59,629 INFO L226 Difference]: Without dead ends: 21 [2025-01-09 04:03:59,630 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 04:03:59,630 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 4 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 04:03:59,630 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 39 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 04:03:59,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2025-01-09 04:03:59,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2025-01-09 04:03:59,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-01-09 04:03:59,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2025-01-09 04:03:59,634 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2025-01-09 04:03:59,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:03:59,634 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2025-01-09 04:03:59,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 04:03:59,634 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2025-01-09 04:03:59,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-01-09 04:03:59,635 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:03:59,635 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:03:59,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 04:03:59,635 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:03:59,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:03:59,635 INFO L85 PathProgramCache]: Analyzing trace with hash 453332055, now seen corresponding path program 1 times [2025-01-09 04:03:59,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:03:59,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254357802] [2025-01-09 04:03:59,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:03:59,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:03:59,641 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-09 04:03:59,652 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 04:03:59,652 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:03:59,652 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:03:59,753 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 04:03:59,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:03:59,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254357802] [2025-01-09 04:03:59,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254357802] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:03:59,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412468588] [2025-01-09 04:03:59,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:03:59,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:03:59,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:03:59,758 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:03:59,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 04:03:59,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-09 04:03:59,793 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 04:03:59,793 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:03:59,794 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:03:59,795 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 04:03:59,798 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:03:59,863 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 04:03:59,864 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:04:00,060 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 04:04:00,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412468588] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:04:00,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:04:00,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 12 [2025-01-09 04:04:00,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063047106] [2025-01-09 04:04:00,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:04:00,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-09 04:04:00,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:04:00,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-09 04:04:00,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2025-01-09 04:04:00,066 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) [2025-01-09 04:04:00,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:04:00,169 INFO L93 Difference]: Finished difference Result 43 states and 61 transitions. [2025-01-09 04:04:00,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 04:04:00,169 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) Word has length 24 [2025-01-09 04:04:00,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:04:00,170 INFO L225 Difference]: With dead ends: 43 [2025-01-09 04:04:00,170 INFO L226 Difference]: Without dead ends: 26 [2025-01-09 04:04:00,170 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2025-01-09 04:04:00,171 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 21 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:04:00,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 70 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:04:00,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2025-01-09 04:04:00,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2025-01-09 04:04:00,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2025-01-09 04:04:00,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2025-01-09 04:04:00,178 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 24 [2025-01-09 04:04:00,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:04:00,179 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2025-01-09 04:04:00,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) [2025-01-09 04:04:00,179 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2025-01-09 04:04:00,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-01-09 04:04:00,180 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:04:00,180 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:04:00,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-09 04:04:00,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:00,381 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:04:00,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:04:00,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1186000891, now seen corresponding path program 1 times [2025-01-09 04:04:00,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:04:00,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103045361] [2025-01-09 04:04:00,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:04:00,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:04:00,389 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-01-09 04:04:00,404 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-01-09 04:04:00,405 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:04:00,405 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:00,557 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 11 proven. 48 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2025-01-09 04:04:00,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:04:00,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103045361] [2025-01-09 04:04:00,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103045361] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:04:00,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972100172] [2025-01-09 04:04:00,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:04:00,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:00,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:04:00,566 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:04:00,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 04:04:00,589 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-01-09 04:04:00,603 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-01-09 04:04:00,603 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:04:00,603 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:00,604 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 04:04:00,605 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:04:00,642 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 11 proven. 48 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2025-01-09 04:04:00,642 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:04:00,929 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 11 proven. 55 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-01-09 04:04:00,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972100172] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:04:00,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:04:00,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 9] total 12 [2025-01-09 04:04:00,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322443672] [2025-01-09 04:04:00,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:04:00,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-09 04:04:00,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:04:00,930 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-09 04:04:00,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2025-01-09 04:04:00,930 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 7 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) [2025-01-09 04:04:01,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:04:01,053 INFO L93 Difference]: Finished difference Result 45 states and 75 transitions. [2025-01-09 04:04:01,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 04:04:01,054 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 7 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) Word has length 52 [2025-01-09 04:04:01,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:04:01,057 INFO L225 Difference]: With dead ends: 45 [2025-01-09 04:04:01,057 INFO L226 Difference]: Without dead ends: 39 [2025-01-09 04:04:01,057 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2025-01-09 04:04:01,057 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 21 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:04:01,058 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 69 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:04:01,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2025-01-09 04:04:01,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2025-01-09 04:04:01,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 25 states have internal predecessors, (25), 6 states have call successors, (6), 1 states have call predecessors, (6), 6 states have return successors, (30), 9 states have call predecessors, (30), 6 states have call successors, (30) [2025-01-09 04:04:01,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 61 transitions. [2025-01-09 04:04:01,069 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 61 transitions. Word has length 52 [2025-01-09 04:04:01,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:04:01,070 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 61 transitions. [2025-01-09 04:04:01,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 7 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) [2025-01-09 04:04:01,070 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 61 transitions. [2025-01-09 04:04:01,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2025-01-09 04:04:01,075 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:04:01,075 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 15, 11, 11, 11, 11, 11, 11, 11, 8, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:04:01,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 04:04:01,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:01,276 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:04:01,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:04:01,277 INFO L85 PathProgramCache]: Analyzing trace with hash 843019629, now seen corresponding path program 2 times [2025-01-09 04:04:01,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:04:01,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218031807] [2025-01-09 04:04:01,278 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:04:01,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:04:01,293 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 158 statements into 2 equivalence classes. [2025-01-09 04:04:01,320 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 158 of 158 statements. [2025-01-09 04:04:01,320 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:04:01,320 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:01,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1337 backedges. 69 proven. 401 refuted. 0 times theorem prover too weak. 867 trivial. 0 not checked. [2025-01-09 04:04:01,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:04:01,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218031807] [2025-01-09 04:04:01,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218031807] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:04:01,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469418635] [2025-01-09 04:04:01,563 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:04:01,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:01,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:04:01,565 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:04:01,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 04:04:01,608 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 158 statements into 2 equivalence classes. [2025-01-09 04:04:01,647 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 158 of 158 statements. [2025-01-09 04:04:01,647 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:04:01,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:01,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 04:04:01,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:04:01,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1337 backedges. 69 proven. 401 refuted. 0 times theorem prover too weak. 867 trivial. 0 not checked. [2025-01-09 04:04:01,712 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:04:02,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1337 backedges. 69 proven. 427 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2025-01-09 04:04:02,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469418635] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:04:02,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:04:02,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 13] total 16 [2025-01-09 04:04:02,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256563345] [2025-01-09 04:04:02,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:04:02,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-09 04:04:02,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:04:02,503 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-09 04:04:02,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2025-01-09 04:04:02,504 INFO L87 Difference]: Start difference. First operand 36 states and 61 transitions. Second operand has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (17), 8 states have call predecessors, (17), 11 states have call successors, (17) [2025-01-09 04:04:02,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:04:02,630 INFO L93 Difference]: Finished difference Result 55 states and 111 transitions. [2025-01-09 04:04:02,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 04:04:02,630 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (17), 8 states have call predecessors, (17), 11 states have call successors, (17) Word has length 158 [2025-01-09 04:04:02,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:04:02,632 INFO L225 Difference]: With dead ends: 55 [2025-01-09 04:04:02,632 INFO L226 Difference]: Without dead ends: 49 [2025-01-09 04:04:02,633 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 309 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2025-01-09 04:04:02,633 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 18 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:04:02,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 85 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:04:02,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2025-01-09 04:04:02,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2025-01-09 04:04:02,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 31 states have internal predecessors, (31), 8 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (56), 13 states have call predecessors, (56), 8 states have call successors, (56) [2025-01-09 04:04:02,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 95 transitions. [2025-01-09 04:04:02,645 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 95 transitions. Word has length 158 [2025-01-09 04:04:02,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:04:02,645 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 95 transitions. [2025-01-09 04:04:02,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (17), 8 states have call predecessors, (17), 11 states have call successors, (17) [2025-01-09 04:04:02,645 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 95 transitions. [2025-01-09 04:04:02,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2025-01-09 04:04:02,656 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:04:02,657 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 41, 29, 29, 29, 29, 29, 29, 29, 18, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:04:02,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-09 04:04:02,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:02,858 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:04:02,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:04:02,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1718675215, now seen corresponding path program 3 times [2025-01-09 04:04:02,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:04:02,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127737212] [2025-01-09 04:04:02,859 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:04:02,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:04:02,882 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 400 statements into 50 equivalence classes. [2025-01-09 04:04:02,903 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 62 of 400 statements. [2025-01-09 04:04:02,906 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-09 04:04:02,907 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:03,065 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 1080 proven. 43 refuted. 0 times theorem prover too weak. 8165 trivial. 0 not checked. [2025-01-09 04:04:03,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:04:03,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127737212] [2025-01-09 04:04:03,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127737212] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:04:03,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774983094] [2025-01-09 04:04:03,069 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:04:03,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:03,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:04:03,071 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:04:03,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 04:04:03,127 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 400 statements into 50 equivalence classes. [2025-01-09 04:04:03,141 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 62 of 400 statements. [2025-01-09 04:04:03,141 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-09 04:04:03,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:03,142 INFO L256 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 04:04:03,153 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:04:03,223 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 2073 proven. 13 refuted. 0 times theorem prover too weak. 7202 trivial. 0 not checked. [2025-01-09 04:04:03,224 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:04:04,333 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 1262 proven. 60 refuted. 0 times theorem prover too weak. 7966 trivial. 0 not checked. [2025-01-09 04:04:04,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774983094] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:04:04,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:04:04,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 14 [2025-01-09 04:04:04,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460788280] [2025-01-09 04:04:04,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:04:04,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 04:04:04,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:04:04,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 04:04:04,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2025-01-09 04:04:04,337 INFO L87 Difference]: Start difference. First operand 46 states and 95 transitions. Second operand has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 14 states have internal predecessors, (45), 7 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (14), 4 states have call predecessors, (14), 7 states have call successors, (14) [2025-01-09 04:04:04,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:04:04,409 INFO L93 Difference]: Finished difference Result 93 states and 240 transitions. [2025-01-09 04:04:04,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 04:04:04,409 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 14 states have internal predecessors, (45), 7 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (14), 4 states have call predecessors, (14), 7 states have call successors, (14) Word has length 400 [2025-01-09 04:04:04,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:04:04,412 INFO L225 Difference]: With dead ends: 93 [2025-01-09 04:04:04,414 INFO L226 Difference]: Without dead ends: 51 [2025-01-09 04:04:04,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 811 GetRequests, 791 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2025-01-09 04:04:04,416 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 14 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 04:04:04,416 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 75 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 04:04:04,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2025-01-09 04:04:04,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2025-01-09 04:04:04,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 31 states have (on average 1.064516129032258) internal successors, (33), 32 states have internal predecessors, (33), 8 states have call successors, (8), 2 states have call predecessors, (8), 8 states have return successors, (51), 13 states have call predecessors, (51), 8 states have call successors, (51) [2025-01-09 04:04:04,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 92 transitions. [2025-01-09 04:04:04,428 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 92 transitions. Word has length 400 [2025-01-09 04:04:04,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:04:04,428 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 92 transitions. [2025-01-09 04:04:04,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 14 states have internal predecessors, (45), 7 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (14), 4 states have call predecessors, (14), 7 states have call successors, (14) [2025-01-09 04:04:04,428 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 92 transitions. [2025-01-09 04:04:04,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2025-01-09 04:04:04,434 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:04:04,434 INFO L218 NwaCegarLoop]: trace histogram [71, 71, 61, 35, 35, 35, 35, 35, 35, 35, 26, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:04:04,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-09 04:04:04,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-01-09 04:04:04,639 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:04:04,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:04:04,641 INFO L85 PathProgramCache]: Analyzing trace with hash 482273333, now seen corresponding path program 4 times [2025-01-09 04:04:04,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:04:04,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774280595] [2025-01-09 04:04:04,641 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:04:04,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:04:04,655 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 492 statements into 2 equivalence classes. [2025-01-09 04:04:04,711 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 417 of 492 statements. [2025-01-09 04:04:04,711 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 04:04:04,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:05,407 INFO L134 CoverageAnalysis]: Checked inductivity of 14150 backedges. 1256 proven. 2490 refuted. 0 times theorem prover too weak. 10404 trivial. 0 not checked. [2025-01-09 04:04:05,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:04:05,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774280595] [2025-01-09 04:04:05,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774280595] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:04:05,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118707801] [2025-01-09 04:04:05,408 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:04:05,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:05,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:04:05,410 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:04:05,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 04:04:05,510 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 492 statements into 2 equivalence classes. [2025-01-09 04:04:05,626 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 417 of 492 statements. [2025-01-09 04:04:05,627 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 04:04:05,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:05,629 INFO L256 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 04:04:05,639 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:04:05,755 INFO L134 CoverageAnalysis]: Checked inductivity of 14150 backedges. 4694 proven. 170 refuted. 0 times theorem prover too weak. 9286 trivial. 0 not checked. [2025-01-09 04:04:05,755 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:04:07,459 INFO L134 CoverageAnalysis]: Checked inductivity of 14150 backedges. 506 proven. 2500 refuted. 0 times theorem prover too weak. 11144 trivial. 0 not checked. [2025-01-09 04:04:07,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118707801] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:04:07,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:04:07,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 15] total 27 [2025-01-09 04:04:07,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157944537] [2025-01-09 04:04:07,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:04:07,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-01-09 04:04:07,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:04:07,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-01-09 04:04:07,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2025-01-09 04:04:07,462 INFO L87 Difference]: Start difference. First operand 48 states and 92 transitions. Second operand has 27 states, 27 states have (on average 3.259259259259259) internal successors, (88), 27 states have internal predecessors, (88), 21 states have call successors, (28), 2 states have call predecessors, (28), 14 states have return successors, (39), 17 states have call predecessors, (39), 21 states have call successors, (39) [2025-01-09 04:04:07,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:04:07,908 INFO L93 Difference]: Finished difference Result 140 states and 339 transitions. [2025-01-09 04:04:07,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-01-09 04:04:07,908 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.259259259259259) internal successors, (88), 27 states have internal predecessors, (88), 21 states have call successors, (28), 2 states have call predecessors, (28), 14 states have return successors, (39), 17 states have call predecessors, (39), 21 states have call successors, (39) Word has length 492 [2025-01-09 04:04:07,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:04:07,910 INFO L225 Difference]: With dead ends: 140 [2025-01-09 04:04:07,911 INFO L226 Difference]: Without dead ends: 96 [2025-01-09 04:04:07,913 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1033 GetRequests, 975 SyntacticMatches, 7 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=654, Invalid=2102, Unknown=0, NotChecked=0, Total=2756 [2025-01-09 04:04:07,913 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 185 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 04:04:07,913 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 203 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 04:04:07,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2025-01-09 04:04:07,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2025-01-09 04:04:07,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 69 states have (on average 1.0579710144927537) internal successors, (73), 66 states have internal predecessors, (73), 17 states have call successors, (17), 14 states have call predecessors, (17), 9 states have return successors, (43), 15 states have call predecessors, (43), 17 states have call successors, (43) [2025-01-09 04:04:07,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 133 transitions. [2025-01-09 04:04:07,929 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 133 transitions. Word has length 492 [2025-01-09 04:04:07,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:04:07,929 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 133 transitions. [2025-01-09 04:04:07,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.259259259259259) internal successors, (88), 27 states have internal predecessors, (88), 21 states have call successors, (28), 2 states have call predecessors, (28), 14 states have return successors, (39), 17 states have call predecessors, (39), 21 states have call successors, (39) [2025-01-09 04:04:07,930 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 133 transitions. [2025-01-09 04:04:07,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2025-01-09 04:04:07,938 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:04:07,938 INFO L218 NwaCegarLoop]: trace histogram [97, 97, 78, 48, 48, 48, 48, 48, 48, 48, 30, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:04:07,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-09 04:04:08,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:08,142 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:04:08,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:04:08,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1230230680, now seen corresponding path program 5 times [2025-01-09 04:04:08,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:04:08,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550212772] [2025-01-09 04:04:08,143 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 04:04:08,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:04:08,181 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 665 statements into 78 equivalence classes. [2025-01-09 04:04:08,277 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) and asserted 463 of 665 statements. [2025-01-09 04:04:08,277 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2025-01-09 04:04:08,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:08,799 INFO L134 CoverageAnalysis]: Checked inductivity of 26139 backedges. 3735 proven. 1741 refuted. 0 times theorem prover too weak. 20663 trivial. 0 not checked. [2025-01-09 04:04:08,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:04:08,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550212772] [2025-01-09 04:04:08,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550212772] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:04:08,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774070015] [2025-01-09 04:04:08,800 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 04:04:08,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:08,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:04:08,802 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:04:08,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-09 04:04:08,875 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 665 statements into 78 equivalence classes. [2025-01-09 04:04:09,004 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) and asserted 463 of 665 statements. [2025-01-09 04:04:09,004 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2025-01-09 04:04:09,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:09,007 INFO L256 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-01-09 04:04:09,017 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:04:09,113 INFO L134 CoverageAnalysis]: Checked inductivity of 26139 backedges. 11426 proven. 865 refuted. 0 times theorem prover too weak. 13848 trivial. 0 not checked. [2025-01-09 04:04:09,113 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:04:13,022 INFO L134 CoverageAnalysis]: Checked inductivity of 26139 backedges. 3888 proven. 1940 refuted. 0 times theorem prover too weak. 20311 trivial. 0 not checked. [2025-01-09 04:04:13,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774070015] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:04:13,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:04:13,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 23] total 28 [2025-01-09 04:04:13,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055714693] [2025-01-09 04:04:13,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:04:13,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-01-09 04:04:13,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:04:13,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-01-09 04:04:13,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=612, Unknown=0, NotChecked=0, Total=756 [2025-01-09 04:04:13,026 INFO L87 Difference]: Start difference. First operand 96 states and 133 transitions. Second operand has 28 states, 28 states have (on average 3.25) internal successors, (91), 28 states have internal predecessors, (91), 21 states have call successors, (28), 2 states have call predecessors, (28), 12 states have return successors, (37), 14 states have call predecessors, (37), 21 states have call successors, (37) [2025-01-09 04:04:13,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:04:13,377 INFO L93 Difference]: Finished difference Result 201 states and 301 transitions. [2025-01-09 04:04:13,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-01-09 04:04:13,378 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.25) internal successors, (91), 28 states have internal predecessors, (91), 21 states have call successors, (28), 2 states have call predecessors, (28), 12 states have return successors, (37), 14 states have call predecessors, (37), 21 states have call successors, (37) Word has length 665 [2025-01-09 04:04:13,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:04:13,380 INFO L225 Difference]: With dead ends: 201 [2025-01-09 04:04:13,380 INFO L226 Difference]: Without dead ends: 111 [2025-01-09 04:04:13,381 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1368 GetRequests, 1314 SyntacticMatches, 11 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2025-01-09 04:04:13,381 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 75 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 04:04:13,382 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 221 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 04:04:13,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2025-01-09 04:04:13,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 97. [2025-01-09 04:04:13,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 69 states have (on average 1.0434782608695652) internal successors, (72), 66 states have internal predecessors, (72), 18 states have call successors, (18), 14 states have call predecessors, (18), 9 states have return successors, (43), 16 states have call predecessors, (43), 18 states have call successors, (43) [2025-01-09 04:04:13,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 133 transitions. [2025-01-09 04:04:13,393 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 133 transitions. Word has length 665 [2025-01-09 04:04:13,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:04:13,394 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 133 transitions. [2025-01-09 04:04:13,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.25) internal successors, (91), 28 states have internal predecessors, (91), 21 states have call successors, (28), 2 states have call predecessors, (28), 12 states have return successors, (37), 14 states have call predecessors, (37), 21 states have call successors, (37) [2025-01-09 04:04:13,395 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 133 transitions. [2025-01-09 04:04:13,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2025-01-09 04:04:13,396 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:04:13,396 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 54, 33, 33, 33, 33, 33, 33, 33, 21, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:04:13,404 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-09 04:04:13,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-01-09 04:04:13,597 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:04:13,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:04:13,598 INFO L85 PathProgramCache]: Analyzing trace with hash -45194381, now seen corresponding path program 6 times [2025-01-09 04:04:13,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:04:13,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018639368] [2025-01-09 04:04:13,598 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 04:04:13,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:04:13,608 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 461 statements into 54 equivalence classes. [2025-01-09 04:04:13,641 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) and asserted 222 of 461 statements. [2025-01-09 04:04:13,641 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2025-01-09 04:04:13,641 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:13,836 INFO L134 CoverageAnalysis]: Checked inductivity of 12387 backedges. 508 proven. 1816 refuted. 0 times theorem prover too weak. 10063 trivial. 0 not checked. [2025-01-09 04:04:13,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:04:13,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018639368] [2025-01-09 04:04:13,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018639368] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:04:13,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564741751] [2025-01-09 04:04:13,837 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 04:04:13,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:13,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:04:13,841 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:04:13,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-09 04:04:13,934 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 461 statements into 54 equivalence classes. [2025-01-09 04:04:13,987 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) and asserted 222 of 461 statements. [2025-01-09 04:04:13,988 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2025-01-09 04:04:13,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:13,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 04:04:13,997 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:04:14,060 INFO L134 CoverageAnalysis]: Checked inductivity of 12387 backedges. 508 proven. 1816 refuted. 0 times theorem prover too weak. 10063 trivial. 0 not checked. [2025-01-09 04:04:14,060 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:04:15,880 INFO L134 CoverageAnalysis]: Checked inductivity of 12387 backedges. 512 proven. 1869 refuted. 0 times theorem prover too weak. 10006 trivial. 0 not checked. [2025-01-09 04:04:15,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564741751] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:04:15,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:04:15,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 17] total 18 [2025-01-09 04:04:15,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512965143] [2025-01-09 04:04:15,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:04:15,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-09 04:04:15,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:04:15,883 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-09 04:04:15,883 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2025-01-09 04:04:15,884 INFO L87 Difference]: Start difference. First operand 97 states and 133 transitions. Second operand has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 states have internal predecessors, (59), 13 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (22), 10 states have call predecessors, (22), 13 states have call successors, (22) [2025-01-09 04:04:15,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:04:15,990 INFO L93 Difference]: Finished difference Result 106 states and 151 transitions. [2025-01-09 04:04:15,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 04:04:15,990 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 states have internal predecessors, (59), 13 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (22), 10 states have call predecessors, (22), 13 states have call successors, (22) Word has length 461 [2025-01-09 04:04:15,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:04:15,992 INFO L225 Difference]: With dead ends: 106 [2025-01-09 04:04:15,992 INFO L226 Difference]: Without dead ends: 102 [2025-01-09 04:04:15,992 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 943 GetRequests, 913 SyntacticMatches, 8 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=185, Invalid=367, Unknown=0, NotChecked=0, Total=552 [2025-01-09 04:04:15,993 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 63 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:04:15,993 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 99 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:04:15,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2025-01-09 04:04:15,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2025-01-09 04:04:16,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 69 states have internal predecessors, (75), 19 states have call successors, (19), 14 states have call predecessors, (19), 10 states have return successors, (53), 18 states have call predecessors, (53), 19 states have call successors, (53) [2025-01-09 04:04:16,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 147 transitions. [2025-01-09 04:04:16,001 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 147 transitions. Word has length 461 [2025-01-09 04:04:16,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:04:16,001 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 147 transitions. [2025-01-09 04:04:16,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 states have internal predecessors, (59), 13 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (22), 10 states have call predecessors, (22), 13 states have call successors, (22) [2025-01-09 04:04:16,002 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 147 transitions. [2025-01-09 04:04:16,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 966 [2025-01-09 04:04:16,006 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:04:16,006 INFO L218 NwaCegarLoop]: trace histogram [141, 141, 114, 70, 70, 70, 70, 70, 70, 70, 44, 27, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:04:16,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-09 04:04:16,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:16,211 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:04:16,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:04:16,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1817430884, now seen corresponding path program 7 times [2025-01-09 04:04:16,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:04:16,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977951924] [2025-01-09 04:04:16,212 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 04:04:16,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:04:16,229 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 965 statements into 1 equivalence classes. [2025-01-09 04:04:16,312 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 965 of 965 statements. [2025-01-09 04:04:16,312 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:04:16,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:17,601 INFO L134 CoverageAnalysis]: Checked inductivity of 55581 backedges. 2125 proven. 7600 refuted. 0 times theorem prover too weak. 45856 trivial. 0 not checked. [2025-01-09 04:04:17,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:04:17,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977951924] [2025-01-09 04:04:17,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977951924] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:04:17,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636248050] [2025-01-09 04:04:17,602 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 04:04:17,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:17,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:04:17,604 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:04:17,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-09 04:04:17,730 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 965 statements into 1 equivalence classes. [2025-01-09 04:04:17,874 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 965 of 965 statements. [2025-01-09 04:04:17,875 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:04:17,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:17,885 INFO L256 TraceCheckSpWp]: Trace formula consists of 2161 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-01-09 04:04:17,893 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:04:18,045 INFO L134 CoverageAnalysis]: Checked inductivity of 55581 backedges. 28939 proven. 3803 refuted. 0 times theorem prover too weak. 22839 trivial. 0 not checked. [2025-01-09 04:04:18,045 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:04:23,460 INFO L134 CoverageAnalysis]: Checked inductivity of 55581 backedges. 2437 proven. 8547 refuted. 0 times theorem prover too weak. 44597 trivial. 0 not checked. [2025-01-09 04:04:23,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636248050] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:04:23,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:04:23,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 31] total 36 [2025-01-09 04:04:23,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709516593] [2025-01-09 04:04:23,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:04:23,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-01-09 04:04:23,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:04:23,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-01-09 04:04:23,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1052, Unknown=0, NotChecked=0, Total=1260 [2025-01-09 04:04:23,463 INFO L87 Difference]: Start difference. First operand 102 states and 147 transitions. Second operand has 36 states, 36 states have (on average 3.2222222222222223) internal successors, (116), 36 states have internal predecessors, (116), 30 states have call successors, (36), 2 states have call predecessors, (36), 16 states have return successors, (49), 17 states have call predecessors, (49), 30 states have call successors, (49) [2025-01-09 04:04:24,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:04:24,037 INFO L93 Difference]: Finished difference Result 221 states and 366 transitions. [2025-01-09 04:04:24,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-01-09 04:04:24,038 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.2222222222222223) internal successors, (116), 36 states have internal predecessors, (116), 30 states have call successors, (36), 2 states have call predecessors, (36), 16 states have return successors, (49), 17 states have call predecessors, (49), 30 states have call successors, (49) Word has length 965 [2025-01-09 04:04:24,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:04:24,041 INFO L225 Difference]: With dead ends: 221 [2025-01-09 04:04:24,042 INFO L226 Difference]: Without dead ends: 125 [2025-01-09 04:04:24,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1988 GetRequests, 1908 SyntacticMatches, 15 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1126 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1076, Invalid=3346, Unknown=0, NotChecked=0, Total=4422 [2025-01-09 04:04:24,045 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 306 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 04:04:24,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 213 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 04:04:24,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2025-01-09 04:04:24,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 121. [2025-01-09 04:04:24,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 87 states have (on average 1.0459770114942528) internal successors, (91), 83 states have internal predecessors, (91), 23 states have call successors, (23), 19 states have call predecessors, (23), 10 states have return successors, (58), 18 states have call predecessors, (58), 23 states have call successors, (58) [2025-01-09 04:04:24,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 172 transitions. [2025-01-09 04:04:24,064 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 172 transitions. Word has length 965 [2025-01-09 04:04:24,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:04:24,064 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 172 transitions. [2025-01-09 04:04:24,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.2222222222222223) internal successors, (116), 36 states have internal predecessors, (116), 30 states have call successors, (36), 2 states have call predecessors, (36), 16 states have return successors, (49), 17 states have call predecessors, (49), 30 states have call successors, (49) [2025-01-09 04:04:24,064 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 172 transitions. [2025-01-09 04:04:24,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 857 [2025-01-09 04:04:24,071 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:04:24,072 INFO L218 NwaCegarLoop]: trace histogram [125, 125, 101, 62, 62, 62, 62, 62, 62, 62, 39, 24, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:04:24,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-09 04:04:24,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:24,276 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:04:24,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:04:24,276 INFO L85 PathProgramCache]: Analyzing trace with hash -2070327020, now seen corresponding path program 8 times [2025-01-09 04:04:24,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:04:24,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371674758] [2025-01-09 04:04:24,277 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:04:24,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:04:24,294 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 856 statements into 2 equivalence classes. [2025-01-09 04:04:24,356 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 856 of 856 statements. [2025-01-09 04:04:24,356 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:04:24,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:25,499 INFO L134 CoverageAnalysis]: Checked inductivity of 43614 backedges. 3187 proven. 6174 refuted. 0 times theorem prover too weak. 34253 trivial. 0 not checked. [2025-01-09 04:04:25,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:04:25,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371674758] [2025-01-09 04:04:25,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371674758] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:04:25,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569929745] [2025-01-09 04:04:25,500 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:04:25,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:25,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:04:25,504 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:04:25,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-09 04:04:25,679 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 856 statements into 2 equivalence classes. [2025-01-09 04:04:25,818 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 856 of 856 statements. [2025-01-09 04:04:25,818 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:04:25,818 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:25,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 1919 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-01-09 04:04:25,870 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:04:25,996 INFO L134 CoverageAnalysis]: Checked inductivity of 43614 backedges. 3735 proven. 6599 refuted. 0 times theorem prover too weak. 33280 trivial. 0 not checked. [2025-01-09 04:04:25,996 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:04:31,736 INFO L134 CoverageAnalysis]: Checked inductivity of 43614 backedges. 3735 proven. 6746 refuted. 0 times theorem prover too weak. 33133 trivial. 0 not checked. [2025-01-09 04:04:31,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569929745] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:04:31,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:04:31,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 35] total 40 [2025-01-09 04:04:31,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229528048] [2025-01-09 04:04:31,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:04:31,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-01-09 04:04:31,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:04:31,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-01-09 04:04:31,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=1309, Unknown=0, NotChecked=0, Total=1560 [2025-01-09 04:04:31,739 INFO L87 Difference]: Start difference. First operand 121 states and 172 transitions. Second operand has 40 states, 40 states have (on average 3.05) internal successors, (122), 40 states have internal predecessors, (122), 33 states have call successors, (37), 1 states have call predecessors, (37), 18 states have return successors, (51), 19 states have call predecessors, (51), 33 states have call successors, (51) [2025-01-09 04:04:32,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:04:32,447 INFO L93 Difference]: Finished difference Result 272 states and 464 transitions. [2025-01-09 04:04:32,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-01-09 04:04:32,448 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.05) internal successors, (122), 40 states have internal predecessors, (122), 33 states have call successors, (37), 1 states have call predecessors, (37), 18 states have return successors, (51), 19 states have call predecessors, (51), 33 states have call successors, (51) Word has length 856 [2025-01-09 04:04:32,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:04:32,450 INFO L225 Difference]: With dead ends: 272 [2025-01-09 04:04:32,451 INFO L226 Difference]: Without dead ends: 157 [2025-01-09 04:04:32,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1779 GetRequests, 1688 SyntacticMatches, 17 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1492 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1360, Invalid=4340, Unknown=0, NotChecked=0, Total=5700 [2025-01-09 04:04:32,453 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 320 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 04:04:32,454 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 247 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 04:04:32,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2025-01-09 04:04:32,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 135. [2025-01-09 04:04:32,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 97 states have (on average 1.041237113402062) internal successors, (101), 93 states have internal predecessors, (101), 27 states have call successors, (27), 22 states have call predecessors, (27), 10 states have return successors, (66), 19 states have call predecessors, (66), 27 states have call successors, (66) [2025-01-09 04:04:32,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 194 transitions. [2025-01-09 04:04:32,471 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 194 transitions. Word has length 856 [2025-01-09 04:04:32,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:04:32,472 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 194 transitions. [2025-01-09 04:04:32,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.05) internal successors, (122), 40 states have internal predecessors, (122), 33 states have call successors, (37), 1 states have call predecessors, (37), 18 states have return successors, (51), 19 states have call predecessors, (51), 33 states have call successors, (51) [2025-01-09 04:04:32,476 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 194 transitions. [2025-01-09 04:04:32,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 748 [2025-01-09 04:04:32,479 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:04:32,483 INFO L218 NwaCegarLoop]: trace histogram [109, 109, 88, 54, 54, 54, 54, 54, 54, 54, 34, 21, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:04:32,492 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-09 04:04:32,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:32,687 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:04:32,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:04:32,688 INFO L85 PathProgramCache]: Analyzing trace with hash -425340118, now seen corresponding path program 9 times [2025-01-09 04:04:32,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:04:32,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589209556] [2025-01-09 04:04:32,688 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:04:32,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:04:32,703 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 747 statements into 93 equivalence classes. [2025-01-09 04:04:32,861 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 93 check-sat command(s) and asserted 747 of 747 statements. [2025-01-09 04:04:32,862 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 93 check-sat command(s) [2025-01-09 04:04:32,862 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:45,010 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 3489 proven. 9630 refuted. 0 times theorem prover too weak. 19977 trivial. 0 not checked. [2025-01-09 04:04:45,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:04:45,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589209556] [2025-01-09 04:04:45,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589209556] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:04:45,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703156363] [2025-01-09 04:04:45,012 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:04:45,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:45,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:04:45,014 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:04:45,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-09 04:04:45,230 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 747 statements into 93 equivalence classes. [2025-01-09 04:04:45,490 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 93 check-sat command(s) and asserted 747 of 747 statements. [2025-01-09 04:04:45,491 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 93 check-sat command(s) [2025-01-09 04:04:45,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:45,499 INFO L256 TraceCheckSpWp]: Trace formula consists of 1677 conjuncts, 220 conjuncts are in the unsatisfiable core [2025-01-09 04:04:45,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:04:46,061 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 5957 proven. 4942 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2025-01-09 04:04:46,061 INFO L312 TraceCheckSpWp]: Computing backward predicates...