./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Ackermann03.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/Ackermann03.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 c244f72db2906c596b7f122d769fc1464836d7d05d9227ee4269773d59ed10bd --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 04:03:43,735 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 04:03:43,773 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 04:03:43,777 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 04:03:43,777 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 04:03:43,792 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 04:03:43,793 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 04:03:43,793 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 04:03:43,793 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 04:03:43,793 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 04:03:43,793 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 04:03:43,793 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 04:03:43,793 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 04:03:43,794 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 04:03:43,794 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 04:03:43,794 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 04:03:43,794 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 04:03:43,794 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 04:03:43,794 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 04:03:43,794 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 04:03:43,794 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 04:03:43,794 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 04:03:43,794 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 04:03:43,794 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 04:03:43,794 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 04:03:43,794 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 04:03:43,794 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 04:03:43,794 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 04:03:43,795 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 04:03:43,795 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 04:03:43,795 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 04:03:43,795 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 04:03:43,795 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:03:43,795 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 04:03:43,795 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 04:03:43,795 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 04:03:43,795 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 04:03:43,795 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:03:43,795 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 04:03:43,795 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 04:03:43,795 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 04:03:43,795 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 04:03:43,795 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 04:03:43,796 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 04:03:43,796 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 04:03:43,796 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 04:03:43,796 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 04:03:43,796 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 04:03:43,796 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 -> c244f72db2906c596b7f122d769fc1464836d7d05d9227ee4269773d59ed10bd [2025-01-09 04:03:44,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 04:03:44,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 04:03:44,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 04:03:44,091 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 04:03:44,092 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 04:03:44,093 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Ackermann03.c [2025-01-09 04:03:45,352 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8a3dc27f8/d4cc85050b0e4659872c85f642f4043d/FLAG85eaea4be [2025-01-09 04:03:45,562 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 04:03:45,563 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive/Ackermann03.c [2025-01-09 04:03:45,570 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8a3dc27f8/d4cc85050b0e4659872c85f642f4043d/FLAG85eaea4be [2025-01-09 04:03:45,596 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8a3dc27f8/d4cc85050b0e4659872c85f642f4043d [2025-01-09 04:03:45,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 04:03:45,600 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 04:03:45,601 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 04:03:45,605 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 04:03:45,611 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 04:03:45,612 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:03:45" (1/1) ... [2025-01-09 04:03:45,612 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@166b273e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:03:45, skipping insertion in model container [2025-01-09 04:03:45,612 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:03:45" (1/1) ... [2025-01-09 04:03:45,622 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 04:03:45,732 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/Ackermann03.c[1168,1181] [2025-01-09 04:03:45,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 04:03:45,744 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 04:03:45,755 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/Ackermann03.c[1168,1181] [2025-01-09 04:03:45,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 04:03:45,768 INFO L204 MainTranslator]: Completed translation [2025-01-09 04:03:45,770 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:03:45 WrapperNode [2025-01-09 04:03:45,770 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 04:03:45,771 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 04:03:45,771 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 04:03:45,771 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 04:03:45,776 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:03:45" (1/1) ... [2025-01-09 04:03:45,780 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:03:45" (1/1) ... [2025-01-09 04:03:45,789 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 33 [2025-01-09 04:03:45,790 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 04:03:45,790 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 04:03:45,791 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 04:03:45,791 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 04:03:45,797 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:03:45" (1/1) ... [2025-01-09 04:03:45,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:03:45" (1/1) ... [2025-01-09 04:03:45,802 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:03:45" (1/1) ... [2025-01-09 04:03:45,812 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 04:03:45,812 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:03:45" (1/1) ... [2025-01-09 04:03:45,812 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:03:45" (1/1) ... [2025-01-09 04:03:45,814 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:03:45" (1/1) ... [2025-01-09 04:03:45,817 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:03:45" (1/1) ... [2025-01-09 04:03:45,818 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:03:45" (1/1) ... [2025-01-09 04:03:45,819 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:03:45" (1/1) ... [2025-01-09 04:03:45,819 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:03:45" (1/1) ... [2025-01-09 04:03:45,822 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 04:03:45,823 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 04:03:45,823 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 04:03:45,823 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 04:03:45,824 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:03:45" (1/1) ... [2025-01-09 04:03:45,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:03:45,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:03:45,849 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 04:03:45,853 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 04:03:45,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 04:03:45,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 04:03:45,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 04:03:45,871 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2025-01-09 04:03:45,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2025-01-09 04:03:45,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 04:03:45,914 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 04:03:45,915 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 04:03:46,011 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2025-01-09 04:03:46,013 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 04:03:46,019 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 04:03:46,019 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 04:03:46,020 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:03:46 BoogieIcfgContainer [2025-01-09 04:03:46,020 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 04:03:46,023 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 04:03:46,023 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 04:03:46,026 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 04:03:46,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:03:45" (1/3) ... [2025-01-09 04:03:46,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35555f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:03:46, skipping insertion in model container [2025-01-09 04:03:46,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:03:45" (2/3) ... [2025-01-09 04:03:46,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35555f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:03:46, skipping insertion in model container [2025-01-09 04:03:46,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:03:46" (3/3) ... [2025-01-09 04:03:46,028 INFO L128 eAbstractionObserver]: Analyzing ICFG Ackermann03.c [2025-01-09 04:03:46,039 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 04:03:46,041 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Ackermann03.c that has 2 procedures, 23 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-01-09 04:03:46,082 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 04:03:46,092 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;@b8a1fe3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 04:03:46,092 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 04:03:46,095 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-01-09 04:03:46,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-01-09 04:03:46,100 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:03:46,100 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:03:46,101 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:03:46,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:03:46,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1470704041, now seen corresponding path program 1 times [2025-01-09 04:03:46,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:03:46,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207846058] [2025-01-09 04:03:46,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:03:46,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:03:46,165 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-09 04:03:46,184 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-09 04:03:46,186 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:03:46,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:03:46,297 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 04:03:46,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:03:46,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207846058] [2025-01-09 04:03:46,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207846058] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:03:46,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 04:03:46,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 04:03:46,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271468548] [2025-01-09 04:03:46,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:03:46,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 04:03:46,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:03:46,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 04:03:46,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 04:03:46,314 INFO L87 Difference]: Start difference. First operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) 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 04:03:46,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:03:46,451 INFO L93 Difference]: Finished difference Result 37 states and 53 transitions. [2025-01-09 04:03:46,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 04:03:46,454 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 04:03:46,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:03:46,460 INFO L225 Difference]: With dead ends: 37 [2025-01-09 04:03:46,462 INFO L226 Difference]: Without dead ends: 27 [2025-01-09 04:03:46,465 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 04:03:46,469 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 10 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:03:46,470 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 71 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:03:46,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-01-09 04:03:46,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2025-01-09 04:03:46,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2025-01-09 04:03:46,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2025-01-09 04:03:46,497 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 12 [2025-01-09 04:03:46,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:03:46,497 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2025-01-09 04:03:46,497 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 04:03:46,498 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2025-01-09 04:03:46,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-01-09 04:03:46,499 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:03:46,499 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:03:46,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 04:03:46,499 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:03:46,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:03:46,500 INFO L85 PathProgramCache]: Analyzing trace with hash 941922339, now seen corresponding path program 1 times [2025-01-09 04:03:46,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:03:46,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692093527] [2025-01-09 04:03:46,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:03:46,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:03:46,507 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-09 04:03:46,518 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 04:03:46,519 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:03:46,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:03:46,572 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 04:03:46,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:03:46,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692093527] [2025-01-09 04:03:46,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692093527] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:03:46,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563556701] [2025-01-09 04:03:46,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:03:46,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:03:46,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:03:46,575 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 04:03:46,577 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 04:03:46,602 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-09 04:03:46,614 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 04:03:46,615 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:03:46,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:03:46,616 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-09 04:03:46,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:03:46,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 04:03:46,657 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:03:46,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 04:03:46,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563556701] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:03:46,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:03:46,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-01-09 04:03:46,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791268922] [2025-01-09 04:03:46,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:03:46,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 04:03:46,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:03:46,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 04:03:46,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-01-09 04:03:46,728 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2025-01-09 04:03:46,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:03:46,880 INFO L93 Difference]: Finished difference Result 69 states and 124 transitions. [2025-01-09 04:03:46,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 04:03:46,880 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 19 [2025-01-09 04:03:46,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:03:46,882 INFO L225 Difference]: With dead ends: 69 [2025-01-09 04:03:46,882 INFO L226 Difference]: Without dead ends: 45 [2025-01-09 04:03:46,883 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2025-01-09 04:03:46,884 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 17 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:03:46,884 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 66 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:03:46,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2025-01-09 04:03:46,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2025-01-09 04:03:46,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 28 states have internal predecessors, (31), 8 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (27), 10 states have call predecessors, (27), 8 states have call successors, (27) [2025-01-09 04:03:46,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 66 transitions. [2025-01-09 04:03:46,911 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 66 transitions. Word has length 19 [2025-01-09 04:03:46,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:03:46,912 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 66 transitions. [2025-01-09 04:03:46,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2025-01-09 04:03:46,914 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 66 transitions. [2025-01-09 04:03:46,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-01-09 04:03:46,917 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:03:46,917 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:03:46,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 04:03:47,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:03:47,118 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:03:47,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:03:47,119 INFO L85 PathProgramCache]: Analyzing trace with hash -574784801, now seen corresponding path program 1 times [2025-01-09 04:03:47,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:03:47,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770792853] [2025-01-09 04:03:47,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:03:47,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:03:47,138 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-01-09 04:03:47,178 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-01-09 04:03:47,178 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:03:47,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:03:47,347 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-01-09 04:03:47,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:03:47,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770792853] [2025-01-09 04:03:47,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770792853] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:03:47,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112707790] [2025-01-09 04:03:47,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:03:47,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:03:47,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:03:47,352 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 04:03:47,354 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 04:03:47,377 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-01-09 04:03:47,393 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-01-09 04:03:47,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:03:47,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:03:47,395 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 04:03:47,396 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:03:47,442 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-01-09 04:03:47,442 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:03:47,999 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-01-09 04:03:48,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112707790] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:03:48,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:03:48,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 8 [2025-01-09 04:03:48,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64634628] [2025-01-09 04:03:48,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:03:48,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 04:03:48,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:03:48,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 04:03:48,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-01-09 04:03:48,002 INFO L87 Difference]: Start difference. First operand 41 states and 66 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2025-01-09 04:03:48,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:03:48,116 INFO L93 Difference]: Finished difference Result 62 states and 124 transitions. [2025-01-09 04:03:48,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 04:03:48,117 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) Word has length 45 [2025-01-09 04:03:48,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:03:48,119 INFO L225 Difference]: With dead ends: 62 [2025-01-09 04:03:48,119 INFO L226 Difference]: Without dead ends: 58 [2025-01-09 04:03:48,119 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 90 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2025-01-09 04:03:48,120 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 22 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:03:48,120 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 68 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:03:48,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-01-09 04:03:48,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2025-01-09 04:03:48,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 36 states have internal predecessors, (39), 10 states have call successors, (10), 2 states have call predecessors, (10), 8 states have return successors, (60), 15 states have call predecessors, (60), 10 states have call successors, (60) [2025-01-09 04:03:48,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 109 transitions. [2025-01-09 04:03:48,142 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 109 transitions. Word has length 45 [2025-01-09 04:03:48,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:03:48,142 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 109 transitions. [2025-01-09 04:03:48,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2025-01-09 04:03:48,143 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 109 transitions. [2025-01-09 04:03:48,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-01-09 04:03:48,149 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:03:48,149 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:03:48,155 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 04:03:48,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:03:48,353 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:03:48,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:03:48,354 INFO L85 PathProgramCache]: Analyzing trace with hash -749766204, now seen corresponding path program 2 times [2025-01-09 04:03:48,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:03:48,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520861265] [2025-01-09 04:03:48,354 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:03:48,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:03:48,365 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 79 statements into 2 equivalence classes. [2025-01-09 04:03:48,394 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 79 of 79 statements. [2025-01-09 04:03:48,397 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:03:48,397 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:03:48,549 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 104 proven. 14 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2025-01-09 04:03:48,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:03:48,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520861265] [2025-01-09 04:03:48,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520861265] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:03:48,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876490667] [2025-01-09 04:03:48,550 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:03:48,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:03:48,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:03:48,555 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 04:03:48,563 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 04:03:48,617 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 79 statements into 2 equivalence classes. [2025-01-09 04:03:48,643 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 79 of 79 statements. [2025-01-09 04:03:48,643 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:03:48,643 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:03:48,644 INFO L256 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-01-09 04:03:48,646 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:03:48,725 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 141 proven. 37 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2025-01-09 04:03:48,726 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:03:50,083 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 85 proven. 65 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2025-01-09 04:03:50,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876490667] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:03:50,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:03:50,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 15] total 27 [2025-01-09 04:03:50,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143869850] [2025-01-09 04:03:50,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:03:50,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-01-09 04:03:50,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:03:50,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-01-09 04:03:50,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=605, Unknown=0, NotChecked=0, Total=702 [2025-01-09 04:03:50,086 INFO L87 Difference]: Start difference. First operand 54 states and 109 transitions. Second operand has 27 states, 27 states have (on average 2.1481481481481484) internal successors, (58), 20 states have internal predecessors, (58), 7 states have call successors, (12), 2 states have call predecessors, (12), 11 states have return successors, (24), 14 states have call predecessors, (24), 7 states have call successors, (24) [2025-01-09 04:03:51,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:03:51,101 INFO L93 Difference]: Finished difference Result 294 states and 1388 transitions. [2025-01-09 04:03:51,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-01-09 04:03:51,102 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.1481481481481484) internal successors, (58), 20 states have internal predecessors, (58), 7 states have call successors, (12), 2 states have call predecessors, (12), 11 states have return successors, (24), 14 states have call predecessors, (24), 7 states have call successors, (24) Word has length 79 [2025-01-09 04:03:51,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:03:51,116 INFO L225 Difference]: With dead ends: 294 [2025-01-09 04:03:51,119 INFO L226 Difference]: Without dead ends: 245 [2025-01-09 04:03:51,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=692, Invalid=2848, Unknown=0, NotChecked=0, Total=3540 [2025-01-09 04:03:51,126 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 14 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 04:03:51,128 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 176 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 04:03:51,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2025-01-09 04:03:51,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 92. [2025-01-09 04:03:51,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 58 states have (on average 1.0689655172413792) internal successors, (62), 60 states have internal predecessors, (62), 16 states have call successors, (16), 2 states have call predecessors, (16), 17 states have return successors, (194), 29 states have call predecessors, (194), 16 states have call successors, (194) [2025-01-09 04:03:51,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 272 transitions. [2025-01-09 04:03:51,205 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 272 transitions. Word has length 79 [2025-01-09 04:03:51,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:03:51,206 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 272 transitions. [2025-01-09 04:03:51,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.1481481481481484) internal successors, (58), 20 states have internal predecessors, (58), 7 states have call successors, (12), 2 states have call predecessors, (12), 11 states have return successors, (24), 14 states have call predecessors, (24), 7 states have call successors, (24) [2025-01-09 04:03:51,206 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 272 transitions. [2025-01-09 04:03:51,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-01-09 04:03:51,213 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:03:51,213 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 11, 8, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:03:51,224 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 04:03:51,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:03:51,419 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:03:51,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:03:51,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1991913426, now seen corresponding path program 3 times [2025-01-09 04:03:51,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:03:51,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692674396] [2025-01-09 04:03:51,420 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:03:51,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:03:51,432 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 131 statements into 12 equivalence classes. [2025-01-09 04:03:51,446 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 55 of 131 statements. [2025-01-09 04:03:51,446 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-01-09 04:03:51,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:03:51,530 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 192 proven. 22 refuted. 0 times theorem prover too weak. 621 trivial. 0 not checked. [2025-01-09 04:03:51,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:03:51,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692674396] [2025-01-09 04:03:51,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692674396] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:03:51,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406490952] [2025-01-09 04:03:51,530 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:03:51,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:03:51,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:03:51,536 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 04:03:51,536 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 04:03:51,587 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 131 statements into 12 equivalence classes. [2025-01-09 04:03:51,605 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 55 of 131 statements. [2025-01-09 04:03:51,605 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-01-09 04:03:51,609 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:03:51,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 04:03:51,614 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:03:51,651 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 348 proven. 3 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2025-01-09 04:03:51,653 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:03:51,965 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 216 proven. 27 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2025-01-09 04:03:51,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406490952] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:03:51,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:03:51,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 12 [2025-01-09 04:03:51,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164543812] [2025-01-09 04:03:51,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:03:51,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-09 04:03:51,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:03:51,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-09 04:03:51,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2025-01-09 04:03:51,968 INFO L87 Difference]: Start difference. First operand 92 states and 272 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 4 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2025-01-09 04:03:52,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:03:52,050 INFO L93 Difference]: Finished difference Result 144 states and 486 transitions. [2025-01-09 04:03:52,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 04:03:52,050 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 4 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 131 [2025-01-09 04:03:52,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:03:52,052 INFO L225 Difference]: With dead ends: 144 [2025-01-09 04:03:52,052 INFO L226 Difference]: Without dead ends: 57 [2025-01-09 04:03:52,056 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 252 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2025-01-09 04:03:52,057 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 40 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:03:52,058 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 89 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:03:52,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2025-01-09 04:03:52,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 48. [2025-01-09 04:03:52,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 34 states have internal predecessors, (35), 8 states have call successors, (8), 2 states have call predecessors, (8), 8 states have return successors, (36), 11 states have call predecessors, (36), 8 states have call successors, (36) [2025-01-09 04:03:52,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 79 transitions. [2025-01-09 04:03:52,066 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 79 transitions. Word has length 131 [2025-01-09 04:03:52,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:03:52,066 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 79 transitions. [2025-01-09 04:03:52,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 4 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2025-01-09 04:03:52,067 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 79 transitions. [2025-01-09 04:03:52,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2025-01-09 04:03:52,068 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:03:52,068 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 18, 13, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:03:52,076 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 04:03:52,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:03:52,269 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:03:52,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:03:52,270 INFO L85 PathProgramCache]: Analyzing trace with hash 373404425, now seen corresponding path program 4 times [2025-01-09 04:03:52,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:03:52,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251504692] [2025-01-09 04:03:52,270 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:03:52,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:03:52,278 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 210 statements into 2 equivalence classes. [2025-01-09 04:03:52,313 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 175 of 210 statements. [2025-01-09 04:03:52,313 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 04:03:52,313 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:03:52,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2307 backedges. 432 proven. 724 refuted. 0 times theorem prover too weak. 1151 trivial. 0 not checked. [2025-01-09 04:03:52,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:03:52,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251504692] [2025-01-09 04:03:52,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251504692] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:03:52,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867949199] [2025-01-09 04:03:52,716 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:03:52,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:03:52,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:03:52,718 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 04:03:52,720 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 04:03:52,775 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 210 statements into 2 equivalence classes. [2025-01-09 04:03:52,815 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 175 of 210 statements. [2025-01-09 04:03:52,815 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 04:03:52,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:03:52,817 INFO L256 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 04:03:52,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:03:52,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2307 backedges. 528 proven. 242 refuted. 0 times theorem prover too weak. 1537 trivial. 0 not checked. [2025-01-09 04:03:52,900 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:03:54,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2307 backedges. 528 proven. 276 refuted. 0 times theorem prover too weak. 1503 trivial. 0 not checked. [2025-01-09 04:03:54,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867949199] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:03:54,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:03:54,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 11] total 18 [2025-01-09 04:03:54,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327055020] [2025-01-09 04:03:54,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:03:54,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-09 04:03:54,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:03:54,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-09 04:03:54,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2025-01-09 04:03:54,337 INFO L87 Difference]: Start difference. First operand 48 states and 79 transitions. Second operand has 18 states, 18 states have (on average 3.888888888888889) internal successors, (70), 18 states have internal predecessors, (70), 12 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (27), 11 states have call predecessors, (27), 12 states have call successors, (27) [2025-01-09 04:03:54,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:03:54,573 INFO L93 Difference]: Finished difference Result 131 states and 306 transitions. [2025-01-09 04:03:54,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-09 04:03:54,574 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.888888888888889) internal successors, (70), 18 states have internal predecessors, (70), 12 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (27), 11 states have call predecessors, (27), 12 states have call successors, (27) Word has length 210 [2025-01-09 04:03:54,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:03:54,578 INFO L225 Difference]: With dead ends: 131 [2025-01-09 04:03:54,578 INFO L226 Difference]: Without dead ends: 57 [2025-01-09 04:03:54,580 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 419 SyntacticMatches, 8 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=180, Invalid=522, Unknown=0, NotChecked=0, Total=702 [2025-01-09 04:03:54,580 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 87 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 04:03:54,580 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 193 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 04:03:54,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2025-01-09 04:03:54,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2025-01-09 04:03:54,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.131578947368421) internal successors, (43), 40 states have internal predecessors, (43), 10 states have call successors, (10), 5 states have call predecessors, (10), 8 states have return successors, (22), 11 states have call predecessors, (22), 10 states have call successors, (22) [2025-01-09 04:03:54,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 75 transitions. [2025-01-09 04:03:54,598 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 75 transitions. Word has length 210 [2025-01-09 04:03:54,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:03:54,599 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 75 transitions. [2025-01-09 04:03:54,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.888888888888889) internal successors, (70), 18 states have internal predecessors, (70), 12 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (27), 11 states have call predecessors, (27), 12 states have call successors, (27) [2025-01-09 04:03:54,599 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 75 transitions. [2025-01-09 04:03:54,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2025-01-09 04:03:54,600 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:03:54,600 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 9, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:03:54,614 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 04:03:54,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:03:54,801 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:03:54,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:03:54,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1271355446, now seen corresponding path program 5 times [2025-01-09 04:03:54,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:03:54,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424127691] [2025-01-09 04:03:54,802 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 04:03:54,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:03:54,815 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 105 statements into 13 equivalence classes. [2025-01-09 04:03:54,826 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 60 of 105 statements. [2025-01-09 04:03:54,826 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-01-09 04:03:54,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:03:55,136 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 107 proven. 189 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2025-01-09 04:03:55,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:03:55,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424127691] [2025-01-09 04:03:55,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424127691] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:03:55,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947834570] [2025-01-09 04:03:55,137 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 04:03:55,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:03:55,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:03:55,143 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 04:03:55,145 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 04:03:55,197 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 105 statements into 13 equivalence classes. [2025-01-09 04:03:55,239 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 60 of 105 statements. [2025-01-09 04:03:55,239 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-01-09 04:03:55,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:03:55,240 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-01-09 04:03:55,243 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:03:55,315 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 286 proven. 71 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2025-01-09 04:03:55,316 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:03:56,506 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 121 proven. 161 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2025-01-09 04:03:56,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947834570] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:03:56,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:03:56,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 16] total 28 [2025-01-09 04:03:56,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155255752] [2025-01-09 04:03:56,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:03:56,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-01-09 04:03:56,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:03:56,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-01-09 04:03:56,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2025-01-09 04:03:56,508 INFO L87 Difference]: Start difference. First operand 57 states and 75 transitions. Second operand has 28 states, 28 states have (on average 2.392857142857143) internal successors, (67), 21 states have internal predecessors, (67), 11 states have call successors, (17), 2 states have call predecessors, (17), 12 states have return successors, (29), 15 states have call predecessors, (29), 11 states have call successors, (29) [2025-01-09 04:03:57,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:03:57,313 INFO L93 Difference]: Finished difference Result 145 states and 188 transitions. [2025-01-09 04:03:57,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-01-09 04:03:57,314 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.392857142857143) internal successors, (67), 21 states have internal predecessors, (67), 11 states have call successors, (17), 2 states have call predecessors, (17), 12 states have return successors, (29), 15 states have call predecessors, (29), 11 states have call successors, (29) Word has length 105 [2025-01-09 04:03:57,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:03:57,315 INFO L225 Difference]: With dead ends: 145 [2025-01-09 04:03:57,315 INFO L226 Difference]: Without dead ends: 86 [2025-01-09 04:03:57,316 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 196 SyntacticMatches, 6 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 811 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=785, Invalid=3121, Unknown=0, NotChecked=0, Total=3906 [2025-01-09 04:03:57,316 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 86 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 04:03:57,317 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 287 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 04:03:57,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2025-01-09 04:03:57,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 74. [2025-01-09 04:03:57,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 50 states have (on average 1.12) internal successors, (56), 52 states have internal predecessors, (56), 14 states have call successors, (14), 8 states have call predecessors, (14), 9 states have return successors, (22), 13 states have call predecessors, (22), 14 states have call successors, (22) [2025-01-09 04:03:57,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2025-01-09 04:03:57,323 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 105 [2025-01-09 04:03:57,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:03:57,324 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2025-01-09 04:03:57,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.392857142857143) internal successors, (67), 21 states have internal predecessors, (67), 11 states have call successors, (17), 2 states have call predecessors, (17), 12 states have return successors, (29), 15 states have call predecessors, (29), 11 states have call successors, (29) [2025-01-09 04:03:57,324 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2025-01-09 04:03:57,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-01-09 04:03:57,325 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:03:57,325 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 11, 8, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:03:57,334 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 04:03:57,527 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,SelfDestructingSolverStorable6 [2025-01-09 04:03:57,528 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:03:57,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:03:57,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1811622132, now seen corresponding path program 6 times [2025-01-09 04:03:57,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:03:57,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000956690] [2025-01-09 04:03:57,529 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 04:03:57,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:03:57,534 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 131 statements into 14 equivalence classes. [2025-01-09 04:03:57,556 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) and asserted 131 of 131 statements. [2025-01-09 04:03:57,556 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2025-01-09 04:03:57,556 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:03:57,877 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 141 proven. 306 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2025-01-09 04:03:57,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:03:57,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000956690] [2025-01-09 04:03:57,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000956690] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:03:57,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143311836] [2025-01-09 04:03:57,878 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 04:03:57,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:03:57,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:03:57,880 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 04:03:57,882 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 04:03:57,954 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 131 statements into 14 equivalence classes. [2025-01-09 04:03:57,989 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) and asserted 131 of 131 statements. [2025-01-09 04:03:57,990 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2025-01-09 04:03:57,990 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:03:57,991 INFO L256 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-09 04:03:57,993 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:03:58,043 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 475 proven. 114 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2025-01-09 04:03:58,043 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:03:59,351 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 155 proven. 295 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2025-01-09 04:03:59,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143311836] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:03:59,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:03:59,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 17] total 22 [2025-01-09 04:03:59,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796618604] [2025-01-09 04:03:59,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:03:59,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-01-09 04:03:59,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:03:59,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-01-09 04:03:59,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2025-01-09 04:03:59,354 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 19 states have internal predecessors, (67), 12 states have call successors, (18), 2 states have call predecessors, (18), 11 states have return successors, (27), 11 states have call predecessors, (27), 12 states have call successors, (27) [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 131 states and 163 transitions. [2025-01-09 04:03:59,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-01-09 04:03:59,629 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 19 states have internal predecessors, (67), 12 states have call successors, (18), 2 states have call predecessors, (18), 11 states have return successors, (27), 11 states have call predecessors, (27), 12 states have call successors, (27) Word has length 131 [2025-01-09 04:03:59,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:03:59,630 INFO L225 Difference]: With dead ends: 131 [2025-01-09 04:03:59,630 INFO L226 Difference]: Without dead ends: 74 [2025-01-09 04:03:59,631 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 249 SyntacticMatches, 11 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=337, Invalid=1223, Unknown=0, NotChecked=0, Total=1560 [2025-01-09 04:03:59,631 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 32 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:03:59,631 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 164 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:03:59,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2025-01-09 04:03:59,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2025-01-09 04:03:59,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 48 states have internal predecessors, (50), 12 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (19), 13 states have call predecessors, (19), 12 states have call successors, (19) [2025-01-09 04:03:59,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 81 transitions. [2025-01-09 04:03:59,638 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 81 transitions. Word has length 131 [2025-01-09 04:03:59,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:03:59,639 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 81 transitions. [2025-01-09 04:03:59,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 19 states have internal predecessors, (67), 12 states have call successors, (18), 2 states have call predecessors, (18), 11 states have return successors, (27), 11 states have call predecessors, (27), 12 states have call successors, (27) [2025-01-09 04:03:59,639 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 81 transitions. [2025-01-09 04:03:59,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2025-01-09 04:03:59,641 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:03:59,641 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 13, 10, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:03:59,650 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 04:03:59,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:03:59,842 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:03:59,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:03:59,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1701842998, now seen corresponding path program 7 times [2025-01-09 04:03:59,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:03:59,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134956455] [2025-01-09 04:03:59,843 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 04:03:59,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:03:59,848 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-01-09 04:03:59,867 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-01-09 04:03:59,867 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:03:59,867 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:00,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 439 proven. 281 refuted. 0 times theorem prover too weak. 526 trivial. 0 not checked. [2025-01-09 04:04:00,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:04:00,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134956455] [2025-01-09 04:04:00,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134956455] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:04:00,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953965149] [2025-01-09 04:04:00,310 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 04:04:00,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:00,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:04:00,313 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 04:04:00,315 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 04:04:00,398 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-01-09 04:04:00,431 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-01-09 04:04:00,431 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:04:00,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:00,432 INFO L256 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-01-09 04:04:00,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:04:00,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 421 proven. 286 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2025-01-09 04:04:00,502 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:04:03,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 467 proven. 286 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2025-01-09 04:04:03,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953965149] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:04:03,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:04:03,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 27] total 35 [2025-01-09 04:04:03,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992765038] [2025-01-09 04:04:03,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:04:03,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-01-09 04:04:03,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:04:03,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-01-09 04:04:03,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1038, Unknown=0, NotChecked=0, Total=1190 [2025-01-09 04:04:03,881 INFO L87 Difference]: Start difference. First operand 69 states and 81 transitions. Second operand has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 29 states have internal predecessors, (75), 14 states have call successors, (17), 1 states have call predecessors, (17), 17 states have return successors, (32), 17 states have call predecessors, (32), 14 states have call successors, (32) [2025-01-09 04:04:04,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:04:04,646 INFO L93 Difference]: Finished difference Result 134 states and 164 transitions. [2025-01-09 04:04:04,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-01-09 04:04:04,646 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 29 states have internal predecessors, (75), 14 states have call successors, (17), 1 states have call predecessors, (17), 17 states have return successors, (32), 17 states have call predecessors, (32), 14 states have call successors, (32) Word has length 157 [2025-01-09 04:04:04,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:04:04,650 INFO L225 Difference]: With dead ends: 134 [2025-01-09 04:04:04,650 INFO L226 Difference]: Without dead ends: 90 [2025-01-09 04:04:04,651 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 297 SyntacticMatches, 14 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1090 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=761, Invalid=3399, Unknown=0, NotChecked=0, Total=4160 [2025-01-09 04:04:04,651 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 55 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 04:04:04,651 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 262 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 04:04:04,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2025-01-09 04:04:04,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 74. [2025-01-09 04:04:04,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 50 states have (on average 1.06) internal successors, (53), 51 states have internal predecessors, (53), 13 states have call successors, (13), 7 states have call predecessors, (13), 10 states have return successors, (23), 15 states have call predecessors, (23), 13 states have call successors, (23) [2025-01-09 04:04:04,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 89 transitions. [2025-01-09 04:04:04,660 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 89 transitions. Word has length 157 [2025-01-09 04:04:04,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:04:04,664 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 89 transitions. [2025-01-09 04:04:04,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 29 states have internal predecessors, (75), 14 states have call successors, (17), 1 states have call predecessors, (17), 17 states have return successors, (32), 17 states have call predecessors, (32), 14 states have call successors, (32) [2025-01-09 04:04:04,664 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 89 transitions. [2025-01-09 04:04:04,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2025-01-09 04:04:04,665 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:04:04,665 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 15, 12, 11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:04:04,672 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 04:04:04,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:04,866 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:04:04,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:04:04,867 INFO L85 PathProgramCache]: Analyzing trace with hash 332854534, now seen corresponding path program 8 times [2025-01-09 04:04:04,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:04:04,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686501310] [2025-01-09 04:04:04,867 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:04:04,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:04:04,877 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 183 statements into 2 equivalence classes. [2025-01-09 04:04:04,897 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 183 of 183 statements. [2025-01-09 04:04:04,898 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:04:04,898 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:06,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 600 proven. 156 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2025-01-09 04:04:06,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:04:06,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686501310] [2025-01-09 04:04:06,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686501310] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:04:06,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386269437] [2025-01-09 04:04:06,050 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:04:06,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:06,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:04:06,052 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 04:04:06,053 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 04:04:06,176 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 183 statements into 2 equivalence classes. [2025-01-09 04:04:06,217 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 183 of 183 statements. [2025-01-09 04:04:06,217 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:04:06,217 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:06,219 INFO L256 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 79 conjuncts are in the unsatisfiable core [2025-01-09 04:04:06,221 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:04:06,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 583 proven. 158 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2025-01-09 04:04:06,336 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:04:07,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 597 proven. 189 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2025-01-09 04:04:07,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386269437] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:04:07,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:04:07,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 33] total 36 [2025-01-09 04:04:07,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397266672] [2025-01-09 04:04:07,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:04:07,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-01-09 04:04:07,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:04:07,327 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-01-09 04:04:07,327 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1171, Unknown=0, NotChecked=0, Total=1260 [2025-01-09 04:04:07,328 INFO L87 Difference]: Start difference. First operand 74 states and 89 transitions. Second operand has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 29 states have internal predecessors, (56), 6 states have call successors, (9), 1 states have call predecessors, (9), 14 states have return successors, (22), 13 states have call predecessors, (22), 6 states have call successors, (22) [2025-01-09 04:04:09,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:04:09,436 INFO L93 Difference]: Finished difference Result 158 states and 207 transitions. [2025-01-09 04:04:09,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2025-01-09 04:04:09,437 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 29 states have internal predecessors, (56), 6 states have call successors, (9), 1 states have call predecessors, (9), 14 states have return successors, (22), 13 states have call predecessors, (22), 6 states have call successors, (22) Word has length 183 [2025-01-09 04:04:09,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:04:09,438 INFO L225 Difference]: With dead ends: 158 [2025-01-09 04:04:09,438 INFO L226 Difference]: Without dead ends: 148 [2025-01-09 04:04:09,439 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1318 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=898, Invalid=6412, Unknown=0, NotChecked=0, Total=7310 [2025-01-09 04:04:09,440 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 169 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 2560 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 2752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 2560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-01-09 04:04:09,440 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 581 Invalid, 2752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 2560 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-01-09 04:04:09,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2025-01-09 04:04:09,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 96. [2025-01-09 04:04:09,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 64 states have (on average 1.046875) internal successors, (67), 65 states have internal predecessors, (67), 17 states have call successors, (17), 8 states have call predecessors, (17), 14 states have return successors, (43), 22 states have call predecessors, (43), 17 states have call successors, (43) [2025-01-09 04:04:09,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 127 transitions. [2025-01-09 04:04:09,450 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 127 transitions. Word has length 183 [2025-01-09 04:04:09,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:04:09,450 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 127 transitions. [2025-01-09 04:04:09,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 29 states have internal predecessors, (56), 6 states have call successors, (9), 1 states have call predecessors, (9), 14 states have return successors, (22), 13 states have call predecessors, (22), 6 states have call successors, (22) [2025-01-09 04:04:09,451 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 127 transitions. [2025-01-09 04:04:09,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2025-01-09 04:04:09,452 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:04:09,452 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 14, 11, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:04:09,460 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 04:04:09,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:09,656 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:04:09,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:04:09,658 INFO L85 PathProgramCache]: Analyzing trace with hash -860565711, now seen corresponding path program 9 times [2025-01-09 04:04:09,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:04:09,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475425278] [2025-01-09 04:04:09,658 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:04:09,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:04:09,669 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 170 statements into 18 equivalence classes. [2025-01-09 04:04:09,705 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) and asserted 161 of 170 statements. [2025-01-09 04:04:09,706 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2025-01-09 04:04:09,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:10,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 607 proven. 353 refuted. 0 times theorem prover too weak. 523 trivial. 0 not checked. [2025-01-09 04:04:10,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:04:10,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475425278] [2025-01-09 04:04:10,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475425278] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:04:10,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267637413] [2025-01-09 04:04:10,590 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:04:10,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:10,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:04:10,593 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 04:04:10,594 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 04:04:10,713 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 170 statements into 18 equivalence classes. [2025-01-09 04:04:10,760 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) and asserted 161 of 170 statements. [2025-01-09 04:04:10,760 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2025-01-09 04:04:10,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:10,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-01-09 04:04:10,764 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:04:10,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 477 proven. 372 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2025-01-09 04:04:10,885 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:04:14,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 525 proven. 384 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2025-01-09 04:04:14,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267637413] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:04:14,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:04:14,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 21, 28] total 46 [2025-01-09 04:04:14,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270171717] [2025-01-09 04:04:14,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:04:14,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-01-09 04:04:14,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:04:14,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-01-09 04:04:14,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=1750, Unknown=0, NotChecked=0, Total=2070 [2025-01-09 04:04:14,491 INFO L87 Difference]: Start difference. First operand 96 states and 127 transitions. Second operand has 46 states, 45 states have (on average 2.1333333333333333) internal successors, (96), 39 states have internal predecessors, (96), 20 states have call successors, (23), 1 states have call predecessors, (23), 22 states have return successors, (40), 21 states have call predecessors, (40), 20 states have call successors, (40) [2025-01-09 04:04:15,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:04:15,322 INFO L93 Difference]: Finished difference Result 212 states and 276 transitions. [2025-01-09 04:04:15,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2025-01-09 04:04:15,323 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.1333333333333333) internal successors, (96), 39 states have internal predecessors, (96), 20 states have call successors, (23), 1 states have call predecessors, (23), 22 states have return successors, (40), 21 states have call predecessors, (40), 20 states have call successors, (40) Word has length 170 [2025-01-09 04:04:15,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:04:15,326 INFO L225 Difference]: With dead ends: 212 [2025-01-09 04:04:15,326 INFO L226 Difference]: Without dead ends: 141 [2025-01-09 04:04:15,328 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 322 SyntacticMatches, 19 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2551 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1306, Invalid=6526, Unknown=0, NotChecked=0, Total=7832 [2025-01-09 04:04:15,328 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 111 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 04:04:15,329 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 249 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 04:04:15,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2025-01-09 04:04:15,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 105. [2025-01-09 04:04:15,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 72 states have internal predecessors, (74), 17 states have call successors, (17), 11 states have call predecessors, (17), 16 states have return successors, (38), 21 states have call predecessors, (38), 17 states have call successors, (38) [2025-01-09 04:04:15,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 129 transitions. [2025-01-09 04:04:15,340 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 129 transitions. Word has length 170 [2025-01-09 04:04:15,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:04:15,341 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 129 transitions. [2025-01-09 04:04:15,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.1333333333333333) internal successors, (96), 39 states have internal predecessors, (96), 20 states have call successors, (23), 1 states have call predecessors, (23), 22 states have return successors, (40), 21 states have call predecessors, (40), 20 states have call successors, (40) [2025-01-09 04:04:15,341 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 129 transitions. [2025-01-09 04:04:15,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2025-01-09 04:04:15,342 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:04:15,342 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 16, 13, 12, 12, 12, 12, 12, 12, 12, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:04:15,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-01-09 04:04:15,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:15,547 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:04:15,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:04:15,547 INFO L85 PathProgramCache]: Analyzing trace with hash 530318069, now seen corresponding path program 10 times [2025-01-09 04:04:15,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:04:15,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804204543] [2025-01-09 04:04:15,547 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:04:15,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:04:15,566 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 196 statements into 2 equivalence classes. [2025-01-09 04:04:15,597 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 196 of 196 statements. [2025-01-09 04:04:15,601 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 04:04:15,601 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:16,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 651 proven. 554 refuted. 0 times theorem prover too weak. 815 trivial. 0 not checked. [2025-01-09 04:04:16,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:04:16,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804204543] [2025-01-09 04:04:16,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804204543] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:04:16,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700207542] [2025-01-09 04:04:16,473 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:04:16,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:16,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:04:16,477 INFO L229 MonitoredProcess]: Starting monitored process 12 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 04:04:16,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-09 04:04:16,637 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 196 statements into 2 equivalence classes. [2025-01-09 04:04:16,678 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 196 of 196 statements. [2025-01-09 04:04:16,678 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 04:04:16,678 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:16,680 INFO L256 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-01-09 04:04:16,683 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:04:16,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 647 proven. 519 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2025-01-09 04:04:16,764 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:04:21,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 685 proven. 580 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2025-01-09 04:04:21,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700207542] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:04:21,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:04:21,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 32] total 35 [2025-01-09 04:04:21,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234397121] [2025-01-09 04:04:21,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:04:21,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-01-09 04:04:21,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:04:21,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-01-09 04:04:21,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1016, Unknown=0, NotChecked=0, Total=1190 [2025-01-09 04:04:21,117 INFO L87 Difference]: Start difference. First operand 105 states and 129 transitions. Second operand has 35 states, 35 states have (on average 2.5428571428571427) internal successors, (89), 31 states have internal predecessors, (89), 20 states have call successors, (23), 1 states have call predecessors, (23), 18 states have return successors, (38), 17 states have call predecessors, (38), 20 states have call successors, (38) [2025-01-09 04:04:21,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:04:21,703 INFO L93 Difference]: Finished difference Result 220 states and 268 transitions. [2025-01-09 04:04:21,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-01-09 04:04:21,704 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.5428571428571427) internal successors, (89), 31 states have internal predecessors, (89), 20 states have call successors, (23), 1 states have call predecessors, (23), 18 states have return successors, (38), 17 states have call predecessors, (38), 20 states have call successors, (38) Word has length 196 [2025-01-09 04:04:21,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:04:21,705 INFO L225 Difference]: With dead ends: 220 [2025-01-09 04:04:21,705 INFO L226 Difference]: Without dead ends: 146 [2025-01-09 04:04:21,706 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 374 SyntacticMatches, 21 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=631, Invalid=2675, Unknown=0, NotChecked=0, Total=3306 [2025-01-09 04:04:21,707 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 48 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 04:04:21,707 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 331 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 04:04:21,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2025-01-09 04:04:21,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 110. [2025-01-09 04:04:21,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 75 states have internal predecessors, (77), 18 states have call successors, (18), 11 states have call predecessors, (18), 17 states have return successors, (40), 23 states have call predecessors, (40), 18 states have call successors, (40) [2025-01-09 04:04:21,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 135 transitions. [2025-01-09 04:04:21,722 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 135 transitions. Word has length 196 [2025-01-09 04:04:21,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:04:21,723 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 135 transitions. [2025-01-09 04:04:21,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.5428571428571427) internal successors, (89), 31 states have internal predecessors, (89), 20 states have call successors, (23), 1 states have call predecessors, (23), 18 states have return successors, (38), 17 states have call predecessors, (38), 20 states have call successors, (38) [2025-01-09 04:04:21,723 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 135 transitions. [2025-01-09 04:04:21,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2025-01-09 04:04:21,724 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:04:21,724 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 17, 14, 13, 13, 13, 13, 13, 13, 13, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:04:21,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-01-09 04:04:21,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-01-09 04:04:21,925 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:04:21,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:04:21,926 INFO L85 PathProgramCache]: Analyzing trace with hash 660925528, now seen corresponding path program 11 times [2025-01-09 04:04:21,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:04:21,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443531389] [2025-01-09 04:04:21,926 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 04:04:21,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:04:21,934 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 209 statements into 22 equivalence classes. [2025-01-09 04:04:21,942 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 87 of 209 statements. [2025-01-09 04:04:21,942 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-01-09 04:04:21,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:22,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 214 proven. 772 refuted. 0 times theorem prover too weak. 1334 trivial. 0 not checked. [2025-01-09 04:04:22,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:04:22,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443531389] [2025-01-09 04:04:22,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443531389] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:04:22,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347614793] [2025-01-09 04:04:22,377 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 04:04:22,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:22,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:04:22,380 INFO L229 MonitoredProcess]: Starting monitored process 13 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 04:04:22,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-09 04:04:22,637 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 209 statements into 22 equivalence classes. [2025-01-09 04:04:22,669 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 87 of 209 statements. [2025-01-09 04:04:22,670 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-01-09 04:04:22,670 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:22,672 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-01-09 04:04:22,675 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:04:22,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 1296 proven. 226 refuted. 0 times theorem prover too weak. 798 trivial. 0 not checked. [2025-01-09 04:04:22,772 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:04:23,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 224 proven. 778 refuted. 0 times theorem prover too weak. 1318 trivial. 0 not checked. [2025-01-09 04:04:23,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347614793] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:04:23,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:04:23,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 19] total 23 [2025-01-09 04:04:23,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550872112] [2025-01-09 04:04:23,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:04:23,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 04:04:23,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:04:23,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 04:04:23,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2025-01-09 04:04:23,529 INFO L87 Difference]: Start difference. First operand 110 states and 135 transitions. Second operand has 23 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 20 states have internal predecessors, (69), 13 states have call successors, (20), 2 states have call predecessors, (20), 11 states have return successors, (29), 11 states have call predecessors, (29), 13 states have call successors, (29) [2025-01-09 04:04:24,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:04:24,042 INFO L93 Difference]: Finished difference Result 210 states and 265 transitions. [2025-01-09 04:04:24,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-01-09 04:04:24,042 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 20 states have internal predecessors, (69), 13 states have call successors, (20), 2 states have call predecessors, (20), 11 states have return successors, (29), 11 states have call predecessors, (29), 13 states have call successors, (29) Word has length 209 [2025-01-09 04:04:24,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:04:24,043 INFO L225 Difference]: With dead ends: 210 [2025-01-09 04:04:24,043 INFO L226 Difference]: Without dead ends: 127 [2025-01-09 04:04:24,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=416, Invalid=1840, Unknown=0, NotChecked=0, Total=2256 [2025-01-09 04:04:24,045 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 72 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 04:04:24,045 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 326 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 04:04:24,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2025-01-09 04:04:24,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 116. [2025-01-09 04:04:24,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 80 states have (on average 1.0375) internal successors, (83), 80 states have internal predecessors, (83), 19 states have call successors, (19), 14 states have call predecessors, (19), 16 states have return successors, (32), 21 states have call predecessors, (32), 19 states have call successors, (32) [2025-01-09 04:04:24,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 134 transitions. [2025-01-09 04:04:24,057 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 134 transitions. Word has length 209 [2025-01-09 04:04:24,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:04:24,057 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 134 transitions. [2025-01-09 04:04:24,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 20 states have internal predecessors, (69), 13 states have call successors, (20), 2 states have call predecessors, (20), 11 states have return successors, (29), 11 states have call predecessors, (29), 13 states have call successors, (29) [2025-01-09 04:04:24,057 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 134 transitions. [2025-01-09 04:04:24,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2025-01-09 04:04:24,059 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:04:24,059 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 23, 19, 18, 18, 18, 18, 18, 18, 18, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:04:24,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-01-09 04:04:24,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:24,259 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:04:24,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:04:24,260 INFO L85 PathProgramCache]: Analyzing trace with hash 471385981, now seen corresponding path program 12 times [2025-01-09 04:04:24,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:04:24,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500298992] [2025-01-09 04:04:24,260 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 04:04:24,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:04:24,270 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 281 statements into 25 equivalence classes. [2025-01-09 04:04:24,321 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) and asserted 260 of 281 statements. [2025-01-09 04:04:24,322 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2025-01-09 04:04:24,322 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:24,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4329 backedges. 210 proven. 402 refuted. 0 times theorem prover too weak. 3717 trivial. 0 not checked. [2025-01-09 04:04:24,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:04:24,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500298992] [2025-01-09 04:04:24,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500298992] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:04:24,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928203132] [2025-01-09 04:04:24,459 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 04:04:24,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:24,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:04:24,461 INFO L229 MonitoredProcess]: Starting monitored process 14 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 04:04:24,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-09 04:04:24,688 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 281 statements into 25 equivalence classes. [2025-01-09 04:04:24,768 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) and asserted 260 of 281 statements. [2025-01-09 04:04:24,769 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2025-01-09 04:04:24,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:24,771 INFO L256 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-01-09 04:04:24,775 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:04:24,804 INFO L134 CoverageAnalysis]: Checked inductivity of 4329 backedges. 210 proven. 398 refuted. 0 times theorem prover too weak. 3721 trivial. 0 not checked. [2025-01-09 04:04:24,805 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:04:25,354 INFO L134 CoverageAnalysis]: Checked inductivity of 4329 backedges. 210 proven. 405 refuted. 0 times theorem prover too weak. 3714 trivial. 0 not checked. [2025-01-09 04:04:25,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928203132] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:04:25,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:04:25,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 11 [2025-01-09 04:04:25,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294526725] [2025-01-09 04:04:25,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:04:25,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 04:04:25,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:04:25,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 04:04:25,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-01-09 04:04:25,356 INFO L87 Difference]: Start difference. First operand 116 states and 134 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 7 states have call successors, (11), 1 states have call predecessors, (11), 4 states have return successors, (12), 5 states have call predecessors, (12), 7 states have call successors, (12) [2025-01-09 04:04:25,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:04:25,463 INFO L93 Difference]: Finished difference Result 119 states and 137 transitions. [2025-01-09 04:04:25,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-09 04:04:25,464 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 7 states have call successors, (11), 1 states have call predecessors, (11), 4 states have return successors, (12), 5 states have call predecessors, (12), 7 states have call successors, (12) Word has length 281 [2025-01-09 04:04:25,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:04:25,464 INFO L225 Difference]: With dead ends: 119 [2025-01-09 04:04:25,464 INFO L226 Difference]: Without dead ends: 0 [2025-01-09 04:04:25,465 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 576 GetRequests, 560 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2025-01-09 04:04:25,465 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 31 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:04:25,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 98 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:04:25,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-01-09 04:04:25,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-01-09 04:04:25,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 04:04:25,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-01-09 04:04:25,466 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 281 [2025-01-09 04:04:25,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:04:25,466 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-01-09 04:04:25,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 7 states have call successors, (11), 1 states have call predecessors, (11), 4 states have return successors, (12), 5 states have call predecessors, (12), 7 states have call successors, (12) [2025-01-09 04:04:25,466 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-01-09 04:04:25,466 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-01-09 04:04:25,470 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-01-09 04:04:25,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-01-09 04:04:25,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:25,676 INFO L422 BasicCegarLoop]: Path program histogram: [12, 1, 1] [2025-01-09 04:04:25,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-01-09 04:04:37,532 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-09 04:04:37,538 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 04:04:37 BoogieIcfgContainer [2025-01-09 04:04:37,538 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-09 04:04:37,538 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-09 04:04:37,538 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-09 04:04:37,538 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-09 04:04:37,539 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:03:46" (3/4) ... [2025-01-09 04:04:37,541 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-01-09 04:04:37,547 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure ackermann [2025-01-09 04:04:37,550 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2025-01-09 04:04:37,550 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-01-09 04:04:37,550 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-01-09 04:04:37,550 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-01-09 04:04:37,639 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-01-09 04:04:37,640 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-01-09 04:04:37,640 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-09 04:04:37,641 INFO L158 Benchmark]: Toolchain (without parser) took 52040.15ms. Allocated memory was 142.6MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 113.3MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 415.7MB. Max. memory is 16.1GB. [2025-01-09 04:04:37,641 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 123.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 04:04:37,642 INFO L158 Benchmark]: CACSL2BoogieTranslator took 169.06ms. Allocated memory is still 142.6MB. Free memory was 112.8MB in the beginning and 102.1MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 04:04:37,642 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.91ms. Allocated memory is still 142.6MB. Free memory was 102.1MB in the beginning and 101.1MB in the end (delta: 980.5kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 04:04:37,642 INFO L158 Benchmark]: Boogie Preprocessor took 31.84ms. Allocated memory is still 142.6MB. Free memory was 101.1MB in the beginning and 100.1MB in the end (delta: 993.8kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 04:04:37,642 INFO L158 Benchmark]: RCFGBuilder took 197.45ms. Allocated memory is still 142.6MB. Free memory was 100.1MB in the beginning and 89.3MB in the end (delta: 10.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-09 04:04:37,642 INFO L158 Benchmark]: TraceAbstraction took 51514.75ms. Allocated memory was 142.6MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 88.8MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 969.9MB. Max. memory is 16.1GB. [2025-01-09 04:04:37,642 INFO L158 Benchmark]: Witness Printer took 101.42ms. Allocated memory is still 1.6GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 04:04:37,646 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 123.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 169.06ms. Allocated memory is still 142.6MB. Free memory was 112.8MB in the beginning and 102.1MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.91ms. Allocated memory is still 142.6MB. Free memory was 102.1MB in the beginning and 101.1MB in the end (delta: 980.5kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.84ms. Allocated memory is still 142.6MB. Free memory was 101.1MB in the beginning and 100.1MB in the end (delta: 993.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 197.45ms. Allocated memory is still 142.6MB. Free memory was 100.1MB in the beginning and 89.3MB in the end (delta: 10.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 51514.75ms. Allocated memory was 142.6MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 88.8MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 969.9MB. Max. memory is 16.1GB. * Witness Printer took 101.42ms. Allocated memory is still 1.6GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 45]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 39.6s, OverallIterations: 14, TraceHistogramMax: 42, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 7.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 838 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 794 mSDsluCounter, 2961 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2548 mSDsCounter, 964 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7276 IncrementalHoareTripleChecker+Invalid, 8240 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 964 mSolverCounterUnsat, 413 mSDtfsCounter, 7276 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4375 GetRequests, 3721 SyntacticMatches, 88 SemanticMatches, 566 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8287 ImplicationChecksByTransitivity, 7.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=116occurred in iteration=13, InterpolantAutomatonStates: 364, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 340 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 26.3s InterpolantComputationTime, 3844 NumberOfCodeBlocks, 3228 NumberOfCodeBlocksAsserted, 169 NumberOfCheckSat, 5720 ConstructedInterpolants, 0 QuantifiedInterpolants, 10511 SizeOfPredicates, 50 NumberOfNonLiveVariables, 4887 ConjunctsInSsa, 345 ConjunctsInUnsatCore, 40 InterpolantComputations, 1 PerfectInterpolantSequences, 44157/53880 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-01-09 04:04:37,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE