./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem16_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc 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/eca-rers2012/Problem16_label01.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 67c147095efb46de95e554e09305e6c24ee3dfebae2911ec90ba2508ef10e1b1 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 11:56:02,494 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 11:56:02,546 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 11:56:02,552 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 11:56:02,554 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 11:56:02,578 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 11:56:02,578 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 11:56:02,578 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 11:56:02,579 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 11:56:02,579 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 11:56:02,579 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 11:56:02,579 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 11:56:02,579 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 11:56:02,579 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 11:56:02,579 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 11:56:02,579 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 11:56:02,580 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 11:56:02,580 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 11:56:02,580 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 11:56:02,580 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 11:56:02,580 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 11:56:02,580 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 11:56:02,580 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 11:56:02,580 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 11:56:02,580 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 11:56:02,580 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 11:56:02,580 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 11:56:02,581 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 11:56:02,581 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 11:56:02,581 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 11:56:02,581 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 11:56:02,581 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 11:56:02,581 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 11:56:02,581 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 11:56:02,581 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 11:56:02,581 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 11:56:02,581 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 11:56:02,581 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 11:56:02,581 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 11:56:02,582 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 11:56:02,582 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 11:56:02,582 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 11:56:02,585 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 11:56:02,585 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 -> 67c147095efb46de95e554e09305e6c24ee3dfebae2911ec90ba2508ef10e1b1 [2025-02-05 11:56:02,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 11:56:02,823 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 11:56:02,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 11:56:02,825 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 11:56:02,825 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 11:56:02,826 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem16_label01.c [2025-02-05 11:56:03,971 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fa32319dd/ca0c2c2e13684de6a52f7b76f436938c/FLAG516ab6367 [2025-02-05 11:56:04,339 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 11:56:04,340 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label01.c [2025-02-05 11:56:04,359 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fa32319dd/ca0c2c2e13684de6a52f7b76f436938c/FLAG516ab6367 [2025-02-05 11:56:04,550 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fa32319dd/ca0c2c2e13684de6a52f7b76f436938c [2025-02-05 11:56:04,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 11:56:04,553 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 11:56:04,554 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 11:56:04,554 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 11:56:04,557 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 11:56:04,557 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 11:56:04" (1/1) ... [2025-02-05 11:56:04,558 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e5ffcab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 11:56:04, skipping insertion in model container [2025-02-05 11:56:04,559 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 11:56:04" (1/1) ... [2025-02-05 11:56:04,604 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 11:56:04,757 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/eca-rers2012/Problem16_label01.c[2910,2923] [2025-02-05 11:56:04,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 11:56:04,995 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 11:56:05,011 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/eca-rers2012/Problem16_label01.c[2910,2923] [2025-02-05 11:56:05,113 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 11:56:05,126 INFO L204 MainTranslator]: Completed translation [2025-02-05 11:56:05,128 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 11:56:05 WrapperNode [2025-02-05 11:56:05,128 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 11:56:05,129 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 11:56:05,129 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 11:56:05,129 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 11:56:05,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 11:56:05" (1/1) ... [2025-02-05 11:56:05,163 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 11:56:05" (1/1) ... [2025-02-05 11:56:05,255 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1767 [2025-02-05 11:56:05,255 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 11:56:05,256 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 11:56:05,256 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 11:56:05,256 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 11:56:05,262 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 11:56:05" (1/1) ... [2025-02-05 11:56:05,262 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 11:56:05" (1/1) ... [2025-02-05 11:56:05,286 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 11:56:05" (1/1) ... [2025-02-05 11:56:05,370 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]. [2025-02-05 11:56:05,370 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 11:56:05" (1/1) ... [2025-02-05 11:56:05,370 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 11:56:05" (1/1) ... [2025-02-05 11:56:05,398 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 11:56:05" (1/1) ... [2025-02-05 11:56:05,405 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 11:56:05" (1/1) ... [2025-02-05 11:56:05,413 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 11:56:05" (1/1) ... [2025-02-05 11:56:05,419 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 11:56:05" (1/1) ... [2025-02-05 11:56:05,429 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 11:56:05,430 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 11:56:05,430 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 11:56:05,430 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 11:56:05,431 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 11:56:05" (1/1) ... [2025-02-05 11:56:05,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 11:56:05,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 11:56:05,457 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) [2025-02-05 11:56:05,463 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 [2025-02-05 11:56:05,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 11:56:05,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 11:56:05,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 11:56:05,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 11:56:05,521 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 11:56:05,522 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 11:56:07,912 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1501: havoc calculate_output_#t~ret7#1; [2025-02-05 11:56:07,976 INFO L? ?]: Removed 276 outVars from TransFormulas that were not future-live. [2025-02-05 11:56:07,976 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 11:56:07,990 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 11:56:07,990 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 11:56:07,991 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 11:56:07 BoogieIcfgContainer [2025-02-05 11:56:07,991 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 11:56:07,997 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 11:56:07,997 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 11:56:08,000 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 11:56:08,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 11:56:04" (1/3) ... [2025-02-05 11:56:08,004 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee1d86b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 11:56:08, skipping insertion in model container [2025-02-05 11:56:08,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 11:56:05" (2/3) ... [2025-02-05 11:56:08,005 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee1d86b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 11:56:08, skipping insertion in model container [2025-02-05 11:56:08,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 11:56:07" (3/3) ... [2025-02-05 11:56:08,005 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem16_label01.c [2025-02-05 11:56:08,027 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 11:56:08,028 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem16_label01.c that has 1 procedures, 396 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-05 11:56:08,108 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 11:56:08,127 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;@338cfaa1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 11:56:08,127 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 11:56:08,134 INFO L276 IsEmpty]: Start isEmpty. Operand has 396 states, 394 states have (on average 1.83248730964467) internal successors, (722), 395 states have internal predecessors, (722), 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) [2025-02-05 11:56:08,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-02-05 11:56:08,141 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 11:56:08,142 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 11:56:08,142 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 11:56:08,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 11:56:08,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1183152320, now seen corresponding path program 1 times [2025-02-05 11:56:08,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 11:56:08,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071918244] [2025-02-05 11:56:08,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:56:08,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 11:56:08,249 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-05 11:56:08,284 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-05 11:56:08,285 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:56:08,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:56:08,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 11:56:08,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 11:56:08,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071918244] [2025-02-05 11:56:08,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071918244] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 11:56:08,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 11:56:08,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 11:56:08,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407392065] [2025-02-05 11:56:08,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 11:56:08,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 11:56:08,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 11:56:08,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 11:56:08,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 11:56:08,475 INFO L87 Difference]: Start difference. First operand has 396 states, 394 states have (on average 1.83248730964467) internal successors, (722), 395 states have internal predecessors, (722), 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) Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 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) [2025-02-05 11:56:10,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 11:56:10,216 INFO L93 Difference]: Finished difference Result 1137 states and 2115 transitions. [2025-02-05 11:56:10,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 11:56:10,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 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) Word has length 26 [2025-02-05 11:56:10,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 11:56:10,230 INFO L225 Difference]: With dead ends: 1137 [2025-02-05 11:56:10,234 INFO L226 Difference]: Without dead ends: 662 [2025-02-05 11:56:10,237 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 11:56:10,239 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 358 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-02-05 11:56:10,240 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 114 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-02-05 11:56:10,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2025-02-05 11:56:10,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2025-02-05 11:56:10,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 1.7004538577912254) internal successors, (1124), 661 states have internal predecessors, (1124), 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) [2025-02-05 11:56:10,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1124 transitions. [2025-02-05 11:56:10,338 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1124 transitions. Word has length 26 [2025-02-05 11:56:10,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 11:56:10,339 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 1124 transitions. [2025-02-05 11:56:10,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 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) [2025-02-05 11:56:10,339 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1124 transitions. [2025-02-05 11:56:10,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-02-05 11:56:10,340 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 11:56:10,340 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 11:56:10,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 11:56:10,343 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 11:56:10,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 11:56:10,344 INFO L85 PathProgramCache]: Analyzing trace with hash -165607983, now seen corresponding path program 1 times [2025-02-05 11:56:10,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 11:56:10,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798543267] [2025-02-05 11:56:10,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:56:10,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 11:56:10,359 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-02-05 11:56:10,384 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-02-05 11:56:10,384 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:56:10,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:56:10,498 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 11:56:10,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 11:56:10,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798543267] [2025-02-05 11:56:10,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798543267] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 11:56:10,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 11:56:10,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 11:56:10,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112167360] [2025-02-05 11:56:10,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 11:56:10,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 11:56:10,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 11:56:10,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 11:56:10,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 11:56:10,500 INFO L87 Difference]: Start difference. First operand 662 states and 1124 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 11:56:11,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 11:56:11,586 INFO L93 Difference]: Finished difference Result 1980 states and 3367 transitions. [2025-02-05 11:56:11,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 11:56:11,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2025-02-05 11:56:11,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 11:56:11,592 INFO L225 Difference]: With dead ends: 1980 [2025-02-05 11:56:11,592 INFO L226 Difference]: Without dead ends: 1320 [2025-02-05 11:56:11,594 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 11:56:11,595 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 294 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 1202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-02-05 11:56:11,595 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 217 Invalid, 1202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-02-05 11:56:11,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2025-02-05 11:56:11,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1320. [2025-02-05 11:56:11,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1319 states have (on average 1.4564063684609552) internal successors, (1921), 1319 states have internal predecessors, (1921), 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) [2025-02-05 11:56:11,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1921 transitions. [2025-02-05 11:56:11,633 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1921 transitions. Word has length 92 [2025-02-05 11:56:11,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 11:56:11,633 INFO L471 AbstractCegarLoop]: Abstraction has 1320 states and 1921 transitions. [2025-02-05 11:56:11,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 11:56:11,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1921 transitions. [2025-02-05 11:56:11,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2025-02-05 11:56:11,635 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 11:56:11,635 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 11:56:11,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 11:56:11,636 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 11:56:11,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 11:56:11,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1614645360, now seen corresponding path program 1 times [2025-02-05 11:56:11,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 11:56:11,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477920319] [2025-02-05 11:56:11,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:56:11,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 11:56:11,645 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-02-05 11:56:11,661 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-02-05 11:56:11,661 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:56:11,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:56:11,856 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 11:56:11,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 11:56:11,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477920319] [2025-02-05 11:56:11,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477920319] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 11:56:11,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 11:56:11,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 11:56:11,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349552511] [2025-02-05 11:56:11,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 11:56:11,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 11:56:11,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 11:56:11,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 11:56:11,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 11:56:11,858 INFO L87 Difference]: Start difference. First operand 1320 states and 1921 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 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) [2025-02-05 11:56:13,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 11:56:13,923 INFO L93 Difference]: Finished difference Result 4283 states and 6147 transitions. [2025-02-05 11:56:13,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 11:56:13,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 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) Word has length 105 [2025-02-05 11:56:13,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 11:56:13,939 INFO L225 Difference]: With dead ends: 4283 [2025-02-05 11:56:13,942 INFO L226 Difference]: Without dead ends: 2965 [2025-02-05 11:56:13,945 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-05 11:56:13,945 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 885 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 2070 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 2274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 2070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-02-05 11:56:13,945 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [885 Valid, 151 Invalid, 2274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 2070 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-02-05 11:56:13,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2025-02-05 11:56:14,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 2965. [2025-02-05 11:56:14,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2965 states, 2964 states have (on average 1.3670715249662617) internal successors, (4052), 2964 states have internal predecessors, (4052), 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) [2025-02-05 11:56:14,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2965 states to 2965 states and 4052 transitions. [2025-02-05 11:56:14,027 INFO L78 Accepts]: Start accepts. Automaton has 2965 states and 4052 transitions. Word has length 105 [2025-02-05 11:56:14,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 11:56:14,028 INFO L471 AbstractCegarLoop]: Abstraction has 2965 states and 4052 transitions. [2025-02-05 11:56:14,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 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) [2025-02-05 11:56:14,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2965 states and 4052 transitions. [2025-02-05 11:56:14,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2025-02-05 11:56:14,030 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 11:56:14,031 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 11:56:14,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 11:56:14,031 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 11:56:14,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 11:56:14,031 INFO L85 PathProgramCache]: Analyzing trace with hash 669004372, now seen corresponding path program 1 times [2025-02-05 11:56:14,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 11:56:14,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862291064] [2025-02-05 11:56:14,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:56:14,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 11:56:14,064 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 192 statements into 1 equivalence classes. [2025-02-05 11:56:14,096 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 192 of 192 statements. [2025-02-05 11:56:14,096 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:56:14,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:56:14,366 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2025-02-05 11:56:14,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 11:56:14,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862291064] [2025-02-05 11:56:14,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862291064] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 11:56:14,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 11:56:14,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 11:56:14,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497442758] [2025-02-05 11:56:14,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 11:56:14,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 11:56:14,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 11:56:14,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 11:56:14,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 11:56:14,368 INFO L87 Difference]: Start difference. First operand 2965 states and 4052 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 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) [2025-02-05 11:56:15,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 11:56:15,367 INFO L93 Difference]: Finished difference Result 8231 states and 11469 transitions. [2025-02-05 11:56:15,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 11:56:15,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 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) Word has length 192 [2025-02-05 11:56:15,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 11:56:15,383 INFO L225 Difference]: With dead ends: 8231 [2025-02-05 11:56:15,383 INFO L226 Difference]: Without dead ends: 5597 [2025-02-05 11:56:15,387 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 11:56:15,388 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 359 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-02-05 11:56:15,388 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 155 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-02-05 11:56:15,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5597 states. [2025-02-05 11:56:15,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5597 to 4939. [2025-02-05 11:56:15,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4939 states, 4938 states have (on average 1.3021466180639936) internal successors, (6430), 4938 states have internal predecessors, (6430), 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) [2025-02-05 11:56:15,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4939 states to 4939 states and 6430 transitions. [2025-02-05 11:56:15,454 INFO L78 Accepts]: Start accepts. Automaton has 4939 states and 6430 transitions. Word has length 192 [2025-02-05 11:56:15,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 11:56:15,455 INFO L471 AbstractCegarLoop]: Abstraction has 4939 states and 6430 transitions. [2025-02-05 11:56:15,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 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) [2025-02-05 11:56:15,455 INFO L276 IsEmpty]: Start isEmpty. Operand 4939 states and 6430 transitions. [2025-02-05 11:56:15,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2025-02-05 11:56:15,457 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 11:56:15,457 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 11:56:15,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-05 11:56:15,458 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 11:56:15,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 11:56:15,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1213818578, now seen corresponding path program 1 times [2025-02-05 11:56:15,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 11:56:15,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224364988] [2025-02-05 11:56:15,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:56:15,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 11:56:15,479 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 284 statements into 1 equivalence classes. [2025-02-05 11:56:15,494 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 284 of 284 statements. [2025-02-05 11:56:15,494 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:56:15,494 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:56:15,886 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-05 11:56:15,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 11:56:15,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224364988] [2025-02-05 11:56:15,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224364988] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 11:56:15,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 11:56:15,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 11:56:15,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508154007] [2025-02-05 11:56:15,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 11:56:15,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 11:56:15,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 11:56:15,888 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 11:56:15,888 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 11:56:15,888 INFO L87 Difference]: Start difference. First operand 4939 states and 6430 transitions. Second operand has 4 states, 4 states have (on average 65.25) internal successors, (261), 3 states have internal predecessors, (261), 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) [2025-02-05 11:56:16,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 11:56:16,979 INFO L93 Difference]: Finished difference Result 9547 states and 12517 transitions. [2025-02-05 11:56:16,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 11:56:16,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 3 states have internal predecessors, (261), 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) Word has length 284 [2025-02-05 11:56:16,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 11:56:16,991 INFO L225 Difference]: With dead ends: 9547 [2025-02-05 11:56:16,991 INFO L226 Difference]: Without dead ends: 4939 [2025-02-05 11:56:17,031 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-05 11:56:17,033 INFO L435 NwaCegarLoop]: 267 mSDtfsCounter, 377 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-02-05 11:56:17,033 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 322 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-02-05 11:56:17,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4939 states. [2025-02-05 11:56:17,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4939 to 4939. [2025-02-05 11:56:17,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4939 states, 4938 states have (on average 1.300931551235318) internal successors, (6424), 4938 states have internal predecessors, (6424), 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) [2025-02-05 11:56:17,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4939 states to 4939 states and 6424 transitions. [2025-02-05 11:56:17,084 INFO L78 Accepts]: Start accepts. Automaton has 4939 states and 6424 transitions. Word has length 284 [2025-02-05 11:56:17,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 11:56:17,085 INFO L471 AbstractCegarLoop]: Abstraction has 4939 states and 6424 transitions. [2025-02-05 11:56:17,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 3 states have internal predecessors, (261), 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) [2025-02-05 11:56:17,085 INFO L276 IsEmpty]: Start isEmpty. Operand 4939 states and 6424 transitions. [2025-02-05 11:56:17,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2025-02-05 11:56:17,092 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 11:56:17,093 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 11:56:17,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-05 11:56:17,093 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 11:56:17,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 11:56:17,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1925115926, now seen corresponding path program 1 times [2025-02-05 11:56:17,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 11:56:17,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229796857] [2025-02-05 11:56:17,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:56:17,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 11:56:17,123 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 371 statements into 1 equivalence classes. [2025-02-05 11:56:17,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 371 of 371 statements. [2025-02-05 11:56:17,142 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:56:17,142 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:56:17,290 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-05 11:56:17,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 11:56:17,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229796857] [2025-02-05 11:56:17,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229796857] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 11:56:17,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 11:56:17,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 11:56:17,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9566666] [2025-02-05 11:56:17,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 11:56:17,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 11:56:17,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 11:56:17,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 11:56:17,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 11:56:17,295 INFO L87 Difference]: Start difference. First operand 4939 states and 6424 transitions. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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) [2025-02-05 11:56:18,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 11:56:18,276 INFO L93 Difference]: Finished difference Result 10205 states and 13271 transitions. [2025-02-05 11:56:18,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 11:56:18,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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) Word has length 371 [2025-02-05 11:56:18,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 11:56:18,285 INFO L225 Difference]: With dead ends: 10205 [2025-02-05 11:56:18,285 INFO L226 Difference]: Without dead ends: 4939 [2025-02-05 11:56:18,289 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 11:56:18,289 INFO L435 NwaCegarLoop]: 533 mSDtfsCounter, 233 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-02-05 11:56:18,290 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 538 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-02-05 11:56:18,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4939 states. [2025-02-05 11:56:18,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4939 to 4610. [2025-02-05 11:56:18,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4610 states, 4609 states have (on average 1.080277717509221) internal successors, (4979), 4609 states have internal predecessors, (4979), 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) [2025-02-05 11:56:18,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4610 states to 4610 states and 4979 transitions. [2025-02-05 11:56:18,365 INFO L78 Accepts]: Start accepts. Automaton has 4610 states and 4979 transitions. Word has length 371 [2025-02-05 11:56:18,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 11:56:18,366 INFO L471 AbstractCegarLoop]: Abstraction has 4610 states and 4979 transitions. [2025-02-05 11:56:18,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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) [2025-02-05 11:56:18,366 INFO L276 IsEmpty]: Start isEmpty. Operand 4610 states and 4979 transitions. [2025-02-05 11:56:18,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2025-02-05 11:56:18,369 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 11:56:18,369 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 11:56:18,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-05 11:56:18,369 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 11:56:18,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 11:56:18,370 INFO L85 PathProgramCache]: Analyzing trace with hash -936014508, now seen corresponding path program 1 times [2025-02-05 11:56:18,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 11:56:18,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98317844] [2025-02-05 11:56:18,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:56:18,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 11:56:18,393 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 376 statements into 1 equivalence classes. [2025-02-05 11:56:18,408 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 376 of 376 statements. [2025-02-05 11:56:18,409 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:56:18,409 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:56:18,626 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 47 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 11:56:18,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 11:56:18,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98317844] [2025-02-05 11:56:18,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98317844] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 11:56:18,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412752009] [2025-02-05 11:56:18,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:56:18,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 11:56:18,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 11:56:18,632 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) [2025-02-05 11:56:18,633 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 [2025-02-05 11:56:18,684 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 376 statements into 1 equivalence classes. [2025-02-05 11:56:18,735 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 376 of 376 statements. [2025-02-05 11:56:18,735 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:56:18,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:56:18,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 11:56:18,745 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 11:56:19,241 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2025-02-05 11:56:19,242 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 11:56:19,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412752009] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 11:56:19,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 11:56:19,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2025-02-05 11:56:19,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697905268] [2025-02-05 11:56:19,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 11:56:19,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 11:56:19,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 11:56:19,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 11:56:19,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-05 11:56:19,243 INFO L87 Difference]: Start difference. First operand 4610 states and 4979 transitions. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 2 states have internal predecessors, (271), 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) [2025-02-05 11:56:19,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 11:56:19,967 INFO L93 Difference]: Finished difference Result 9876 states and 10691 transitions. [2025-02-05 11:56:19,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 11:56:19,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 2 states have internal predecessors, (271), 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) Word has length 376 [2025-02-05 11:56:19,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 11:56:19,979 INFO L225 Difference]: With dead ends: 9876 [2025-02-05 11:56:19,979 INFO L226 Difference]: Without dead ends: 5597 [2025-02-05 11:56:19,983 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-05 11:56:19,983 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 125 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-05 11:56:19,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 33 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-05 11:56:19,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5597 states. [2025-02-05 11:56:20,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5597 to 5597. [2025-02-05 11:56:20,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5597 states, 5596 states have (on average 1.0645103645461043) internal successors, (5957), 5596 states have internal predecessors, (5957), 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) [2025-02-05 11:56:20,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5597 states to 5597 states and 5957 transitions. [2025-02-05 11:56:20,036 INFO L78 Accepts]: Start accepts. Automaton has 5597 states and 5957 transitions. Word has length 376 [2025-02-05 11:56:20,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 11:56:20,036 INFO L471 AbstractCegarLoop]: Abstraction has 5597 states and 5957 transitions. [2025-02-05 11:56:20,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 2 states have internal predecessors, (271), 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) [2025-02-05 11:56:20,037 INFO L276 IsEmpty]: Start isEmpty. Operand 5597 states and 5957 transitions. [2025-02-05 11:56:20,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2025-02-05 11:56:20,040 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 11:56:20,040 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 11:56:20,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-05 11:56:20,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 11:56:20,245 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 11:56:20,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 11:56:20,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1453500428, now seen corresponding path program 1 times [2025-02-05 11:56:20,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 11:56:20,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264450161] [2025-02-05 11:56:20,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:56:20,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 11:56:20,277 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 440 statements into 1 equivalence classes. [2025-02-05 11:56:20,298 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 440 of 440 statements. [2025-02-05 11:56:20,298 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:56:20,298 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:56:20,830 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2025-02-05 11:56:20,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 11:56:20,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264450161] [2025-02-05 11:56:20,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264450161] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 11:56:20,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148972700] [2025-02-05 11:56:20,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:56:20,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 11:56:20,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 11:56:20,833 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) [2025-02-05 11:56:20,837 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 [2025-02-05 11:56:20,883 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 440 statements into 1 equivalence classes. [2025-02-05 11:56:20,939 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 440 of 440 statements. [2025-02-05 11:56:20,939 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:56:20,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:56:20,941 INFO L256 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 11:56:20,946 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 11:56:21,422 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2025-02-05 11:56:21,422 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 11:56:24,265 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2025-02-05 11:56:24,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148972700] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 11:56:24,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 11:56:24,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2025-02-05 11:56:24,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778695178] [2025-02-05 11:56:24,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 11:56:24,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 11:56:24,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 11:56:24,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 11:56:24,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-02-05 11:56:24,268 INFO L87 Difference]: Start difference. First operand 5597 states and 5957 transitions. Second operand has 8 states, 8 states have (on average 98.375) internal successors, (787), 7 states have internal predecessors, (787), 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) [2025-02-05 11:56:26,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 11:56:26,951 INFO L93 Difference]: Finished difference Result 17443 states and 18552 transitions. [2025-02-05 11:56:26,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 11:56:26,952 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 98.375) internal successors, (787), 7 states have internal predecessors, (787), 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) Word has length 440 [2025-02-05 11:56:26,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 11:56:26,967 INFO L225 Difference]: With dead ends: 17443 [2025-02-05 11:56:26,967 INFO L226 Difference]: Without dead ends: 11190 [2025-02-05 11:56:26,971 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 884 GetRequests, 875 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2025-02-05 11:56:26,971 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 1507 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 2797 mSolverCounterSat, 477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 3274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 477 IncrementalHoareTripleChecker+Valid, 2797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-02-05 11:56:26,972 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 33 Invalid, 3274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [477 Valid, 2797 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-02-05 11:56:26,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11190 states. [2025-02-05 11:56:27,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11190 to 8558. [2025-02-05 11:56:27,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8558 states, 8557 states have (on average 1.056561879163258) internal successors, (9041), 8557 states have internal predecessors, (9041), 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) [2025-02-05 11:56:27,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8558 states to 8558 states and 9041 transitions. [2025-02-05 11:56:27,075 INFO L78 Accepts]: Start accepts. Automaton has 8558 states and 9041 transitions. Word has length 440 [2025-02-05 11:56:27,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 11:56:27,076 INFO L471 AbstractCegarLoop]: Abstraction has 8558 states and 9041 transitions. [2025-02-05 11:56:27,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 98.375) internal successors, (787), 7 states have internal predecessors, (787), 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) [2025-02-05 11:56:27,077 INFO L276 IsEmpty]: Start isEmpty. Operand 8558 states and 9041 transitions. [2025-02-05 11:56:27,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2025-02-05 11:56:27,083 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 11:56:27,084 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 11:56:27,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-05 11:56:27,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 11:56:27,288 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 11:56:27,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 11:56:27,289 INFO L85 PathProgramCache]: Analyzing trace with hash 2050959372, now seen corresponding path program 1 times [2025-02-05 11:56:27,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 11:56:27,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649377618] [2025-02-05 11:56:27,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:56:27,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 11:56:27,321 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 527 statements into 1 equivalence classes. [2025-02-05 11:56:27,339 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 527 of 527 statements. [2025-02-05 11:56:27,339 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:56:27,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:56:27,518 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 418 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-05 11:56:27,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 11:56:27,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649377618] [2025-02-05 11:56:27,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649377618] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 11:56:27,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 11:56:27,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 11:56:27,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403975461] [2025-02-05 11:56:27,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 11:56:27,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 11:56:27,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 11:56:27,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 11:56:27,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 11:56:27,520 INFO L87 Difference]: Start difference. First operand 8558 states and 9041 transitions. Second operand has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 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) [2025-02-05 11:56:28,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 11:56:28,295 INFO L93 Difference]: Finished difference Result 19746 states and 20944 transitions. [2025-02-05 11:56:28,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 11:56:28,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 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) Word has length 527 [2025-02-05 11:56:28,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 11:56:28,309 INFO L225 Difference]: With dead ends: 19746 [2025-02-05 11:56:28,309 INFO L226 Difference]: Without dead ends: 11190 [2025-02-05 11:56:28,315 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 11:56:28,316 INFO L435 NwaCegarLoop]: 446 mSDtfsCounter, 171 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-05 11:56:28,316 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 452 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-05 11:56:28,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11190 states. [2025-02-05 11:56:28,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11190 to 9545. [2025-02-05 11:56:28,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9545 states, 9544 states have (on average 1.0464165968147527) internal successors, (9987), 9544 states have internal predecessors, (9987), 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) [2025-02-05 11:56:28,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9545 states to 9545 states and 9987 transitions. [2025-02-05 11:56:28,383 INFO L78 Accepts]: Start accepts. Automaton has 9545 states and 9987 transitions. Word has length 527 [2025-02-05 11:56:28,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 11:56:28,384 INFO L471 AbstractCegarLoop]: Abstraction has 9545 states and 9987 transitions. [2025-02-05 11:56:28,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 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) [2025-02-05 11:56:28,384 INFO L276 IsEmpty]: Start isEmpty. Operand 9545 states and 9987 transitions. [2025-02-05 11:56:28,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2025-02-05 11:56:28,387 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 11:56:28,387 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 11:56:28,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-05 11:56:28,387 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 11:56:28,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 11:56:28,388 INFO L85 PathProgramCache]: Analyzing trace with hash -650378942, now seen corresponding path program 1 times [2025-02-05 11:56:28,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 11:56:28,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094608142] [2025-02-05 11:56:28,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:56:28,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 11:56:28,414 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 529 statements into 1 equivalence classes. [2025-02-05 11:56:28,430 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 529 of 529 statements. [2025-02-05 11:56:28,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:56:28,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:56:28,913 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 128 proven. 120 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-02-05 11:56:28,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 11:56:28,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094608142] [2025-02-05 11:56:28,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094608142] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 11:56:28,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431205567] [2025-02-05 11:56:28,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:56:28,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 11:56:28,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 11:56:28,918 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) [2025-02-05 11:56:28,919 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 [2025-02-05 11:56:28,967 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 529 statements into 1 equivalence classes. [2025-02-05 11:56:29,030 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 529 of 529 statements. [2025-02-05 11:56:29,031 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:56:29,031 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:56:29,032 INFO L256 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 11:56:29,038 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 11:56:31,025 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 47 proven. 201 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-02-05 11:56:31,025 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 11:56:34,067 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 47 proven. 201 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-02-05 11:56:34,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431205567] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 11:56:34,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 11:56:34,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2025-02-05 11:56:34,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376582074] [2025-02-05 11:56:34,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 11:56:34,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-05 11:56:34,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 11:56:34,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-05 11:56:34,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2025-02-05 11:56:34,071 INFO L87 Difference]: Start difference. First operand 9545 states and 9987 transitions. Second operand has 10 states, 10 states have (on average 141.7) internal successors, (1417), 9 states have internal predecessors, (1417), 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) [2025-02-05 11:56:35,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 11:56:35,915 INFO L93 Difference]: Finished difference Result 19748 states and 20664 transitions. [2025-02-05 11:56:35,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 11:56:35,916 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 141.7) internal successors, (1417), 9 states have internal predecessors, (1417), 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) Word has length 529 [2025-02-05 11:56:35,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 11:56:35,927 INFO L225 Difference]: With dead ends: 19748 [2025-02-05 11:56:35,927 INFO L226 Difference]: Without dead ends: 10534 [2025-02-05 11:56:35,932 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1064 GetRequests, 1054 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2025-02-05 11:56:35,933 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 878 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 2984 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 3131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 2984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-02-05 11:56:35,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 45 Invalid, 3131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 2984 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-02-05 11:56:35,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10534 states. [2025-02-05 11:56:35,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10534 to 9545. [2025-02-05 11:56:35,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9545 states, 9544 states have (on average 1.0445305951383068) internal successors, (9969), 9544 states have internal predecessors, (9969), 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) [2025-02-05 11:56:35,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9545 states to 9545 states and 9969 transitions. [2025-02-05 11:56:35,993 INFO L78 Accepts]: Start accepts. Automaton has 9545 states and 9969 transitions. Word has length 529 [2025-02-05 11:56:35,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 11:56:35,994 INFO L471 AbstractCegarLoop]: Abstraction has 9545 states and 9969 transitions. [2025-02-05 11:56:35,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 141.7) internal successors, (1417), 9 states have internal predecessors, (1417), 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) [2025-02-05 11:56:35,994 INFO L276 IsEmpty]: Start isEmpty. Operand 9545 states and 9969 transitions. [2025-02-05 11:56:35,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2025-02-05 11:56:35,996 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 11:56:35,997 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 11:56:36,004 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 [2025-02-05 11:56:36,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 11:56:36,197 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 11:56:36,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 11:56:36,198 INFO L85 PathProgramCache]: Analyzing trace with hash 758288814, now seen corresponding path program 1 times [2025-02-05 11:56:36,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 11:56:36,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385157223] [2025-02-05 11:56:36,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:56:36,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 11:56:36,230 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 537 statements into 1 equivalence classes. [2025-02-05 11:56:36,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 537 of 537 statements. [2025-02-05 11:56:36,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:56:36,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:56:36,595 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 47 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 11:56:36,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 11:56:36,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385157223] [2025-02-05 11:56:36,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385157223] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 11:56:36,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737518670] [2025-02-05 11:56:36,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:56:36,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 11:56:36,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 11:56:36,599 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) [2025-02-05 11:56:36,601 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 [2025-02-05 11:56:36,649 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 537 statements into 1 equivalence classes. [2025-02-05 11:56:36,716 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 537 of 537 statements. [2025-02-05 11:56:36,717 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:56:36,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:56:36,718 INFO L256 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 11:56:36,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 11:56:37,334 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 11:56:37,334 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 11:56:38,034 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 47 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 11:56:38,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737518670] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 11:56:38,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 11:56:38,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-05 11:56:38,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447340321] [2025-02-05 11:56:38,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 11:56:38,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-05 11:56:38,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 11:56:38,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-05 11:56:38,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2025-02-05 11:56:38,041 INFO L87 Difference]: Start difference. First operand 9545 states and 9969 transitions. Second operand has 11 states, 11 states have (on average 146.27272727272728) internal successors, (1609), 10 states have internal predecessors, (1609), 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) [2025-02-05 11:56:40,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 11:56:40,445 INFO L93 Difference]: Finished difference Result 27644 states and 28873 transitions. [2025-02-05 11:56:40,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 11:56:40,446 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 146.27272727272728) internal successors, (1609), 10 states have internal predecessors, (1609), 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) Word has length 537 [2025-02-05 11:56:40,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 11:56:40,464 INFO L225 Difference]: With dead ends: 27644 [2025-02-05 11:56:40,464 INFO L226 Difference]: Without dead ends: 17443 [2025-02-05 11:56:40,472 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1076 GetRequests, 1067 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2025-02-05 11:56:40,472 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 1539 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 4509 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1539 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 4942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 4509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-02-05 11:56:40,473 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1539 Valid, 59 Invalid, 4942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 4509 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-02-05 11:56:40,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17443 states. [2025-02-05 11:56:40,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17443 to 12177. [2025-02-05 11:56:40,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12177 states, 12176 states have (on average 1.0422141918528252) internal successors, (12690), 12176 states have internal predecessors, (12690), 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) [2025-02-05 11:56:40,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12177 states to 12177 states and 12690 transitions. [2025-02-05 11:56:40,566 INFO L78 Accepts]: Start accepts. Automaton has 12177 states and 12690 transitions. Word has length 537 [2025-02-05 11:56:40,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 11:56:40,567 INFO L471 AbstractCegarLoop]: Abstraction has 12177 states and 12690 transitions. [2025-02-05 11:56:40,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 146.27272727272728) internal successors, (1609), 10 states have internal predecessors, (1609), 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) [2025-02-05 11:56:40,567 INFO L276 IsEmpty]: Start isEmpty. Operand 12177 states and 12690 transitions. [2025-02-05 11:56:40,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2025-02-05 11:56:40,571 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 11:56:40,572 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 11:56:40,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-05 11:56:40,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-02-05 11:56:40,773 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 11:56:40,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 11:56:40,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1136152687, now seen corresponding path program 1 times [2025-02-05 11:56:40,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 11:56:40,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238212084] [2025-02-05 11:56:40,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:56:40,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 11:56:40,835 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 680 statements into 1 equivalence classes. [2025-02-05 11:56:40,868 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 680 of 680 statements. [2025-02-05 11:56:40,868 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:56:40,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:56:41,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 844 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2025-02-05 11:56:41,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 11:56:41,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238212084] [2025-02-05 11:56:41,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238212084] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 11:56:41,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 11:56:41,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 11:56:41,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027765078] [2025-02-05 11:56:41,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 11:56:41,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 11:56:41,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 11:56:41,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 11:56:41,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 11:56:41,194 INFO L87 Difference]: Start difference. First operand 12177 states and 12690 transitions. Second operand has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 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) [2025-02-05 11:56:41,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 11:56:41,894 INFO L93 Difference]: Finished difference Result 26984 states and 28218 transitions. [2025-02-05 11:56:41,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 11:56:41,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 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) Word has length 680 [2025-02-05 11:56:41,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 11:56:41,907 INFO L225 Difference]: With dead ends: 26984 [2025-02-05 11:56:41,907 INFO L226 Difference]: Without dead ends: 15467 [2025-02-05 11:56:41,917 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 11:56:41,917 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 224 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 11:56:41,917 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 39 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 11:56:41,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15467 states. [2025-02-05 11:56:41,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15467 to 15138. [2025-02-05 11:56:42,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15138 states, 15137 states have (on average 1.0437999603620267) internal successors, (15800), 15137 states have internal predecessors, (15800), 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) [2025-02-05 11:56:42,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15138 states to 15138 states and 15800 transitions. [2025-02-05 11:56:42,017 INFO L78 Accepts]: Start accepts. Automaton has 15138 states and 15800 transitions. Word has length 680 [2025-02-05 11:56:42,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 11:56:42,018 INFO L471 AbstractCegarLoop]: Abstraction has 15138 states and 15800 transitions. [2025-02-05 11:56:42,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 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) [2025-02-05 11:56:42,018 INFO L276 IsEmpty]: Start isEmpty. Operand 15138 states and 15800 transitions. [2025-02-05 11:56:42,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 800 [2025-02-05 11:56:42,024 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 11:56:42,025 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 11:56:42,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-05 11:56:42,025 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 11:56:42,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 11:56:42,025 INFO L85 PathProgramCache]: Analyzing trace with hash -244452357, now seen corresponding path program 1 times [2025-02-05 11:56:42,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 11:56:42,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503738946] [2025-02-05 11:56:42,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:56:42,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 11:56:42,059 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 799 statements into 1 equivalence classes. [2025-02-05 11:56:42,075 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 799 of 799 statements. [2025-02-05 11:56:42,075 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:56:42,075 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:56:42,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 960 proven. 0 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2025-02-05 11:56:42,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 11:56:42,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503738946] [2025-02-05 11:56:42,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503738946] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 11:56:42,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 11:56:42,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 11:56:42,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708770334] [2025-02-05 11:56:42,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 11:56:42,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 11:56:42,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 11:56:42,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 11:56:42,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-05 11:56:42,663 INFO L87 Difference]: Start difference. First operand 15138 states and 15800 transitions. Second operand has 4 states, 4 states have (on average 131.0) internal successors, (524), 3 states have internal predecessors, (524), 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) [2025-02-05 11:56:43,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 11:56:43,511 INFO L93 Difference]: Finished difference Result 29945 states and 31270 transitions. [2025-02-05 11:56:43,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 11:56:43,512 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 131.0) internal successors, (524), 3 states have internal predecessors, (524), 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) Word has length 799 [2025-02-05 11:56:43,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 11:56:43,524 INFO L225 Difference]: With dead ends: 29945 [2025-02-05 11:56:43,524 INFO L226 Difference]: Without dead ends: 15467 [2025-02-05 11:56:43,533 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-05 11:56:43,534 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 173 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-05 11:56:43,534 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 114 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1181 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-05 11:56:43,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15467 states. [2025-02-05 11:56:43,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15467 to 15467. [2025-02-05 11:56:43,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15467 states, 15466 states have (on average 1.042997542997543) internal successors, (16131), 15466 states have internal predecessors, (16131), 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) [2025-02-05 11:56:43,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15467 states to 15467 states and 16131 transitions. [2025-02-05 11:56:43,639 INFO L78 Accepts]: Start accepts. Automaton has 15467 states and 16131 transitions. Word has length 799 [2025-02-05 11:56:43,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 11:56:43,639 INFO L471 AbstractCegarLoop]: Abstraction has 15467 states and 16131 transitions. [2025-02-05 11:56:43,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.0) internal successors, (524), 3 states have internal predecessors, (524), 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) [2025-02-05 11:56:43,639 INFO L276 IsEmpty]: Start isEmpty. Operand 15467 states and 16131 transitions. [2025-02-05 11:56:43,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 861 [2025-02-05 11:56:43,646 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 11:56:43,646 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 11:56:43,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-05 11:56:43,647 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 11:56:43,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 11:56:43,647 INFO L85 PathProgramCache]: Analyzing trace with hash -313988562, now seen corresponding path program 1 times [2025-02-05 11:56:43,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 11:56:43,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891896450] [2025-02-05 11:56:43,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:56:43,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 11:56:43,683 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 860 statements into 1 equivalence classes. [2025-02-05 11:56:43,705 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 860 of 860 statements. [2025-02-05 11:56:43,705 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:56:43,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:56:43,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1581 backedges. 896 proven. 0 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2025-02-05 11:56:43,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 11:56:43,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891896450] [2025-02-05 11:56:43,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891896450] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 11:56:43,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 11:56:43,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 11:56:43,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265042660] [2025-02-05 11:56:43,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 11:56:43,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 11:56:43,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 11:56:43,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 11:56:43,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 11:56:43,987 INFO L87 Difference]: Start difference. First operand 15467 states and 16131 transitions. Second operand has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 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) [2025-02-05 11:56:44,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 11:56:44,603 INFO L93 Difference]: Finished difference Result 32906 states and 34400 transitions. [2025-02-05 11:56:44,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 11:56:44,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 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) Word has length 860 [2025-02-05 11:56:44,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 11:56:44,638 INFO L225 Difference]: With dead ends: 32906 [2025-02-05 11:56:44,638 INFO L226 Difference]: Without dead ends: 18099 [2025-02-05 11:56:44,653 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 11:56:44,653 INFO L435 NwaCegarLoop]: 428 mSDtfsCounter, 220 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 11:56:44,653 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 434 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 11:56:44,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18099 states. [2025-02-05 11:56:44,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18099 to 17770. [2025-02-05 11:56:44,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17770 states, 17769 states have (on average 1.0359615059935843) internal successors, (18408), 17769 states have internal predecessors, (18408), 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) [2025-02-05 11:56:44,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17770 states to 17770 states and 18408 transitions. [2025-02-05 11:56:44,815 INFO L78 Accepts]: Start accepts. Automaton has 17770 states and 18408 transitions. Word has length 860 [2025-02-05 11:56:44,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 11:56:44,816 INFO L471 AbstractCegarLoop]: Abstraction has 17770 states and 18408 transitions. [2025-02-05 11:56:44,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 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) [2025-02-05 11:56:44,816 INFO L276 IsEmpty]: Start isEmpty. Operand 17770 states and 18408 transitions. [2025-02-05 11:56:44,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 862 [2025-02-05 11:56:44,823 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 11:56:44,824 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 11:56:44,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-05 11:56:44,824 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 11:56:44,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 11:56:44,824 INFO L85 PathProgramCache]: Analyzing trace with hash 2071611414, now seen corresponding path program 1 times [2025-02-05 11:56:44,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 11:56:44,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281796123] [2025-02-05 11:56:44,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:56:44,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 11:56:44,863 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 861 statements into 1 equivalence classes. [2025-02-05 11:56:44,886 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 861 of 861 statements. [2025-02-05 11:56:44,887 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:56:44,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:56:45,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1586 backedges. 524 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2025-02-05 11:56:45,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 11:56:45,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281796123] [2025-02-05 11:56:45,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281796123] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 11:56:45,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 11:56:45,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 11:56:45,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201041590] [2025-02-05 11:56:45,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 11:56:45,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 11:56:45,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 11:56:45,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 11:56:45,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 11:56:45,461 INFO L87 Difference]: Start difference. First operand 17770 states and 18408 transitions. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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) [2025-02-05 11:56:46,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 11:56:46,097 INFO L93 Difference]: Finished difference Result 34880 states and 36151 transitions. [2025-02-05 11:56:46,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 11:56:46,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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) Word has length 861 [2025-02-05 11:56:46,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 11:56:46,112 INFO L225 Difference]: With dead ends: 34880 [2025-02-05 11:56:46,113 INFO L226 Difference]: Without dead ends: 17770 [2025-02-05 11:56:46,117 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 11:56:46,118 INFO L435 NwaCegarLoop]: 368 mSDtfsCounter, 259 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 11:56:46,118 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 374 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 11:56:46,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17770 states. [2025-02-05 11:56:46,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17770 to 16783. [2025-02-05 11:56:46,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16783 states, 16782 states have (on average 1.0309259921344298) internal successors, (17301), 16782 states have internal predecessors, (17301), 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) [2025-02-05 11:56:46,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16783 states to 16783 states and 17301 transitions. [2025-02-05 11:56:46,242 INFO L78 Accepts]: Start accepts. Automaton has 16783 states and 17301 transitions. Word has length 861 [2025-02-05 11:56:46,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 11:56:46,242 INFO L471 AbstractCegarLoop]: Abstraction has 16783 states and 17301 transitions. [2025-02-05 11:56:46,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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) [2025-02-05 11:56:46,242 INFO L276 IsEmpty]: Start isEmpty. Operand 16783 states and 17301 transitions. [2025-02-05 11:56:46,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 944 [2025-02-05 11:56:46,252 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 11:56:46,252 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 11:56:46,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-05 11:56:46,252 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 11:56:46,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 11:56:46,253 INFO L85 PathProgramCache]: Analyzing trace with hash -879499596, now seen corresponding path program 1 times [2025-02-05 11:56:46,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 11:56:46,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734730458] [2025-02-05 11:56:46,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:56:46,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 11:56:46,295 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 943 statements into 1 equivalence classes. [2025-02-05 11:56:46,320 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 943 of 943 statements. [2025-02-05 11:56:46,320 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:56:46,320 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:56:46,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1427 backedges. 763 proven. 0 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked. [2025-02-05 11:56:46,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 11:56:46,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734730458] [2025-02-05 11:56:46,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734730458] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 11:56:46,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 11:56:46,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 11:56:46,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345661463] [2025-02-05 11:56:46,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 11:56:46,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 11:56:46,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 11:56:46,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 11:56:46,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 11:56:46,619 INFO L87 Difference]: Start difference. First operand 16783 states and 17301 transitions. Second operand has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 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) [2025-02-05 11:56:47,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 11:56:47,420 INFO L93 Difference]: Finished difference Result 32577 states and 33607 transitions. [2025-02-05 11:56:47,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 11:56:47,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 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) Word has length 943 [2025-02-05 11:56:47,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 11:56:47,433 INFO L225 Difference]: With dead ends: 32577 [2025-02-05 11:56:47,434 INFO L226 Difference]: Without dead ends: 16783 [2025-02-05 11:56:47,442 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 11:56:47,443 INFO L435 NwaCegarLoop]: 419 mSDtfsCounter, 61 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-05 11:56:47,443 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 425 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-05 11:56:47,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16783 states. [2025-02-05 11:56:47,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16783 to 16125. [2025-02-05 11:56:47,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16125 states, 16124 states have (on average 1.0253659141652196) internal successors, (16533), 16124 states have internal predecessors, (16533), 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) [2025-02-05 11:56:47,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16125 states to 16125 states and 16533 transitions. [2025-02-05 11:56:47,614 INFO L78 Accepts]: Start accepts. Automaton has 16125 states and 16533 transitions. Word has length 943 [2025-02-05 11:56:47,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 11:56:47,615 INFO L471 AbstractCegarLoop]: Abstraction has 16125 states and 16533 transitions. [2025-02-05 11:56:47,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 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) [2025-02-05 11:56:47,615 INFO L276 IsEmpty]: Start isEmpty. Operand 16125 states and 16533 transitions. [2025-02-05 11:56:47,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1171 [2025-02-05 11:56:47,638 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 11:56:47,638 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 11:56:47,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-05 11:56:47,638 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 11:56:47,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 11:56:47,639 INFO L85 PathProgramCache]: Analyzing trace with hash -2127806713, now seen corresponding path program 1 times [2025-02-05 11:56:47,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 11:56:47,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777149979] [2025-02-05 11:56:47,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:56:47,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 11:56:47,733 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1170 statements into 1 equivalence classes. [2025-02-05 11:56:47,794 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1170 of 1170 statements. [2025-02-05 11:56:47,794 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:56:47,794 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:56:48,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1990 backedges. 96 proven. 844 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2025-02-05 11:56:48,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 11:56:48,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777149979] [2025-02-05 11:56:48,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777149979] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 11:56:48,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276520253] [2025-02-05 11:56:48,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:56:48,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 11:56:48,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 11:56:48,839 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) [2025-02-05 11:56:48,842 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 [2025-02-05 11:56:48,918 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1170 statements into 1 equivalence classes. [2025-02-05 11:56:49,068 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1170 of 1170 statements. [2025-02-05 11:56:49,068 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:56:49,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:56:49,072 INFO L256 TraceCheckSpWp]: Trace formula consists of 1340 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 11:56:49,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 11:56:49,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1990 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 1871 trivial. 0 not checked. [2025-02-05 11:56:49,114 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 11:56:49,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276520253] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 11:56:49,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 11:56:49,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 11:56:49,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330123862] [2025-02-05 11:56:49,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 11:56:49,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 11:56:49,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 11:56:49,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 11:56:49,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-05 11:56:49,116 INFO L87 Difference]: Start difference. First operand 16125 states and 16533 transitions. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 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) [2025-02-05 11:56:49,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 11:56:49,733 INFO L93 Difference]: Finished difference Result 31261 states and 32071 transitions. [2025-02-05 11:56:49,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 11:56:49,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 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) Word has length 1170 [2025-02-05 11:56:49,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 11:56:49,747 INFO L225 Difference]: With dead ends: 31261 [2025-02-05 11:56:49,748 INFO L226 Difference]: Without dead ends: 16125 [2025-02-05 11:56:49,756 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1174 GetRequests, 1170 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-05 11:56:49,756 INFO L435 NwaCegarLoop]: 371 mSDtfsCounter, 341 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 11:56:49,757 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 377 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 11:56:49,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16125 states. [2025-02-05 11:56:49,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16125 to 15796. [2025-02-05 11:56:49,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15796 states, 15795 states have (on average 1.0226654004431783) internal successors, (16153), 15795 states have internal predecessors, (16153), 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) [2025-02-05 11:56:49,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15796 states to 15796 states and 16153 transitions. [2025-02-05 11:56:49,870 INFO L78 Accepts]: Start accepts. Automaton has 15796 states and 16153 transitions. Word has length 1170 [2025-02-05 11:56:49,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 11:56:49,871 INFO L471 AbstractCegarLoop]: Abstraction has 15796 states and 16153 transitions. [2025-02-05 11:56:49,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 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) [2025-02-05 11:56:49,871 INFO L276 IsEmpty]: Start isEmpty. Operand 15796 states and 16153 transitions. [2025-02-05 11:56:49,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1310 [2025-02-05 11:56:49,887 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 11:56:49,887 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 11:56:49,894 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-05 11:56:50,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-05 11:56:50,088 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 11:56:50,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 11:56:50,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1569071827, now seen corresponding path program 1 times [2025-02-05 11:56:50,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 11:56:50,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74545336] [2025-02-05 11:56:50,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:56:50,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 11:56:50,207 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1309 statements into 1 equivalence classes. [2025-02-05 11:56:50,305 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1309 of 1309 statements. [2025-02-05 11:56:50,305 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:56:50,305 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:56:51,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2665 backedges. 1510 proven. 139 refuted. 0 times theorem prover too weak. 1016 trivial. 0 not checked. [2025-02-05 11:56:51,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 11:56:51,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74545336] [2025-02-05 11:56:51,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74545336] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 11:56:51,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638305022] [2025-02-05 11:56:51,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:56:51,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 11:56:51,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 11:56:51,853 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) [2025-02-05 11:56:51,854 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 [2025-02-05 11:56:51,935 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1309 statements into 1 equivalence classes. [2025-02-05 11:56:52,109 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1309 of 1309 statements. [2025-02-05 11:56:52,110 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:56:52,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:56:52,114 INFO L256 TraceCheckSpWp]: Trace formula consists of 1501 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 11:56:52,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 11:56:53,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2665 backedges. 770 proven. 24 refuted. 0 times theorem prover too weak. 1871 trivial. 0 not checked. [2025-02-05 11:56:53,130 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 11:56:53,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2665 backedges. 794 proven. 0 refuted. 0 times theorem prover too weak. 1871 trivial. 0 not checked. [2025-02-05 11:56:53,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638305022] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-05 11:56:53,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-05 11:56:53,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 8 [2025-02-05 11:56:53,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35331320] [2025-02-05 11:56:53,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 11:56:53,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 11:56:53,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 11:56:53,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 11:56:53,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2025-02-05 11:56:53,331 INFO L87 Difference]: Start difference. First operand 15796 states and 16153 transitions. Second operand has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 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) [2025-02-05 11:56:54,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 11:56:54,317 INFO L93 Difference]: Finished difference Result 17772 states and 18146 transitions. [2025-02-05 11:56:54,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 11:56:54,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 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) Word has length 1309 [2025-02-05 11:56:54,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 11:56:54,334 INFO L225 Difference]: With dead ends: 17772 [2025-02-05 11:56:54,334 INFO L226 Difference]: Without dead ends: 17441 [2025-02-05 11:56:54,339 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2621 GetRequests, 2615 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2025-02-05 11:56:54,340 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 704 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-02-05 11:56:54,340 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 12 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-02-05 11:56:54,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17441 states. [2025-02-05 11:56:54,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17441 to 15467. [2025-02-05 11:56:54,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15467 states, 15466 states have (on average 1.0225656278287858) internal successors, (15815), 15466 states have internal predecessors, (15815), 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) [2025-02-05 11:56:54,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15467 states to 15467 states and 15815 transitions. [2025-02-05 11:56:54,464 INFO L78 Accepts]: Start accepts. Automaton has 15467 states and 15815 transitions. Word has length 1309 [2025-02-05 11:56:54,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 11:56:54,465 INFO L471 AbstractCegarLoop]: Abstraction has 15467 states and 15815 transitions. [2025-02-05 11:56:54,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 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) [2025-02-05 11:56:54,465 INFO L276 IsEmpty]: Start isEmpty. Operand 15467 states and 15815 transitions. [2025-02-05 11:56:54,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1679 [2025-02-05 11:56:54,486 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 11:56:54,486 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 11:56:54,493 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-05 11:56:54,691 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,SelfDestructingSolverStorable17 [2025-02-05 11:56:54,691 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 11:56:54,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 11:56:54,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1903328833, now seen corresponding path program 1 times [2025-02-05 11:56:54,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 11:56:54,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466525439] [2025-02-05 11:56:54,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:56:54,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 11:56:54,800 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1678 statements into 1 equivalence classes. [2025-02-05 11:56:54,847 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1678 of 1678 statements. [2025-02-05 11:56:54,847 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:56:54,847 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:56:55,515 INFO L134 CoverageAnalysis]: Checked inductivity of 5131 backedges. 3105 proven. 0 refuted. 0 times theorem prover too weak. 2026 trivial. 0 not checked. [2025-02-05 11:56:55,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 11:56:55,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466525439] [2025-02-05 11:56:55,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466525439] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 11:56:55,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 11:56:55,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 11:56:55,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409708295] [2025-02-05 11:56:55,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 11:56:55,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 11:56:55,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 11:56:55,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 11:56:55,517 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 11:56:55,517 INFO L87 Difference]: Start difference. First operand 15467 states and 15815 transitions. Second operand has 3 states, 3 states have (on average 248.33333333333334) internal successors, (745), 3 states have internal predecessors, (745), 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) [2025-02-05 11:56:56,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 11:56:56,282 INFO L93 Difference]: Finished difference Result 32906 states and 33657 transitions. [2025-02-05 11:56:56,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 11:56:56,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 248.33333333333334) internal successors, (745), 3 states have internal predecessors, (745), 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) Word has length 1678 [2025-02-05 11:56:56,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 11:56:56,293 INFO L225 Difference]: With dead ends: 32906 [2025-02-05 11:56:56,293 INFO L226 Difference]: Without dead ends: 16125 [2025-02-05 11:56:56,297 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 11:56:56,297 INFO L435 NwaCegarLoop]: 406 mSDtfsCounter, 43 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-05 11:56:56,298 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 412 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-05 11:56:56,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16125 states. [2025-02-05 11:56:56,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16125 to 15138. [2025-02-05 11:56:56,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15138 states, 15137 states have (on average 1.0196868600118913) internal successors, (15435), 15137 states have internal predecessors, (15435), 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) [2025-02-05 11:56:56,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15138 states to 15138 states and 15435 transitions. [2025-02-05 11:56:56,402 INFO L78 Accepts]: Start accepts. Automaton has 15138 states and 15435 transitions. Word has length 1678 [2025-02-05 11:56:56,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 11:56:56,403 INFO L471 AbstractCegarLoop]: Abstraction has 15138 states and 15435 transitions. [2025-02-05 11:56:56,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.33333333333334) internal successors, (745), 3 states have internal predecessors, (745), 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) [2025-02-05 11:56:56,403 INFO L276 IsEmpty]: Start isEmpty. Operand 15138 states and 15435 transitions. [2025-02-05 11:56:56,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1697 [2025-02-05 11:56:56,422 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 11:56:56,422 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 11:56:56,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-02-05 11:56:56,423 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 11:56:56,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 11:56:56,423 INFO L85 PathProgramCache]: Analyzing trace with hash -246038295, now seen corresponding path program 1 times [2025-02-05 11:56:56,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 11:56:56,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330206210] [2025-02-05 11:56:56,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:56:56,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 11:56:56,492 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1696 statements into 1 equivalence classes. [2025-02-05 11:56:56,536 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1696 of 1696 statements. [2025-02-05 11:56:56,537 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:56:56,537 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:56:58,036 INFO L134 CoverageAnalysis]: Checked inductivity of 5737 backedges. 3889 proven. 0 refuted. 0 times theorem prover too weak. 1848 trivial. 0 not checked. [2025-02-05 11:56:58,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 11:56:58,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330206210] [2025-02-05 11:56:58,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330206210] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 11:56:58,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 11:56:58,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 11:56:58,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830265803] [2025-02-05 11:56:58,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 11:56:58,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 11:56:58,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 11:56:58,039 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 11:56:58,039 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-05 11:56:58,039 INFO L87 Difference]: Start difference. First operand 15138 states and 15435 transitions. Second operand has 6 states, 6 states have (on average 127.5) internal successors, (765), 6 states have internal predecessors, (765), 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) [2025-02-05 11:56:59,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 11:56:59,036 INFO L93 Difference]: Finished difference Result 29288 states and 29876 transitions. [2025-02-05 11:56:59,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 11:56:59,036 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 127.5) internal successors, (765), 6 states have internal predecessors, (765), 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) Word has length 1696 [2025-02-05 11:56:59,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 11:56:59,046 INFO L225 Difference]: With dead ends: 29288 [2025-02-05 11:56:59,047 INFO L226 Difference]: Without dead ends: 15139 [2025-02-05 11:56:59,053 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2025-02-05 11:56:59,053 INFO L435 NwaCegarLoop]: 423 mSDtfsCounter, 209 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 1895 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 1904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-02-05 11:56:59,053 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 559 Invalid, 1904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1895 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-02-05 11:56:59,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15139 states. [2025-02-05 11:56:59,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15139 to 15138. [2025-02-05 11:56:59,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15138 states, 15137 states have (on average 1.0189601638369559) internal successors, (15424), 15137 states have internal predecessors, (15424), 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) [2025-02-05 11:56:59,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15138 states to 15138 states and 15424 transitions. [2025-02-05 11:56:59,152 INFO L78 Accepts]: Start accepts. Automaton has 15138 states and 15424 transitions. Word has length 1696 [2025-02-05 11:56:59,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 11:56:59,153 INFO L471 AbstractCegarLoop]: Abstraction has 15138 states and 15424 transitions. [2025-02-05 11:56:59,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.5) internal successors, (765), 6 states have internal predecessors, (765), 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) [2025-02-05 11:56:59,153 INFO L276 IsEmpty]: Start isEmpty. Operand 15138 states and 15424 transitions. [2025-02-05 11:56:59,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1711 [2025-02-05 11:56:59,171 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 11:56:59,171 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 11:56:59,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-02-05 11:56:59,171 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 11:56:59,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 11:56:59,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1772063698, now seen corresponding path program 1 times [2025-02-05 11:56:59,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 11:56:59,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891284100] [2025-02-05 11:56:59,172 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:56:59,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 11:56:59,240 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1710 statements into 1 equivalence classes. [2025-02-05 11:56:59,287 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1710 of 1710 statements. [2025-02-05 11:56:59,287 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:56:59,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:57:00,906 INFO L134 CoverageAnalysis]: Checked inductivity of 5560 backedges. 3801 proven. 0 refuted. 0 times theorem prover too weak. 1759 trivial. 0 not checked. [2025-02-05 11:57:00,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 11:57:00,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891284100] [2025-02-05 11:57:00,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891284100] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 11:57:00,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 11:57:00,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 11:57:00,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560499327] [2025-02-05 11:57:00,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 11:57:00,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 11:57:00,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 11:57:00,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 11:57:00,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 11:57:00,909 INFO L87 Difference]: Start difference. First operand 15138 states and 15424 transitions. Second operand has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 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) [2025-02-05 11:57:01,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 11:57:01,806 INFO L93 Difference]: Finished difference Result 29299 states and 29865 transitions. [2025-02-05 11:57:01,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 11:57:01,807 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 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) Word has length 1710 [2025-02-05 11:57:01,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 11:57:01,819 INFO L225 Difference]: With dead ends: 29299 [2025-02-05 11:57:01,819 INFO L226 Difference]: Without dead ends: 15150 [2025-02-05 11:57:01,827 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-05 11:57:01,827 INFO L435 NwaCegarLoop]: 423 mSDtfsCounter, 218 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-05 11:57:01,828 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 436 Invalid, 1337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-05 11:57:01,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15150 states. [2025-02-05 11:57:01,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15150 to 15138. [2025-02-05 11:57:01,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15138 states, 15137 states have (on average 1.0185637841051727) internal successors, (15418), 15137 states have internal predecessors, (15418), 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) [2025-02-05 11:57:01,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15138 states to 15138 states and 15418 transitions. [2025-02-05 11:57:01,963 INFO L78 Accepts]: Start accepts. Automaton has 15138 states and 15418 transitions. Word has length 1710 [2025-02-05 11:57:01,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 11:57:01,963 INFO L471 AbstractCegarLoop]: Abstraction has 15138 states and 15418 transitions. [2025-02-05 11:57:01,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 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) [2025-02-05 11:57:01,963 INFO L276 IsEmpty]: Start isEmpty. Operand 15138 states and 15418 transitions. [2025-02-05 11:57:01,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1922 [2025-02-05 11:57:01,985 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 11:57:01,986 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 11:57:01,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-02-05 11:57:01,986 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 11:57:01,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 11:57:01,987 INFO L85 PathProgramCache]: Analyzing trace with hash 665022155, now seen corresponding path program 1 times [2025-02-05 11:57:01,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 11:57:01,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764172679] [2025-02-05 11:57:01,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:57:01,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 11:57:02,067 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1921 statements into 1 equivalence classes. [2025-02-05 11:57:02,126 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1921 of 1921 statements. [2025-02-05 11:57:02,126 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:57:02,126 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:57:03,068 INFO L134 CoverageAnalysis]: Checked inductivity of 7648 backedges. 1666 proven. 0 refuted. 0 times theorem prover too weak. 5982 trivial. 0 not checked. [2025-02-05 11:57:03,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 11:57:03,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764172679] [2025-02-05 11:57:03,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764172679] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 11:57:03,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 11:57:03,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 11:57:03,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450557152] [2025-02-05 11:57:03,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 11:57:03,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 11:57:03,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 11:57:03,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 11:57:03,070 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 11:57:03,070 INFO L87 Difference]: Start difference. First operand 15138 states and 15418 transitions. Second operand has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 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) [2025-02-05 11:57:03,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 11:57:03,722 INFO L93 Difference]: Finished difference Result 31590 states and 32194 transitions. [2025-02-05 11:57:03,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 11:57:03,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 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) Word has length 1921 [2025-02-05 11:57:03,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 11:57:03,742 INFO L225 Difference]: With dead ends: 31590 [2025-02-05 11:57:03,742 INFO L226 Difference]: Without dead ends: 17441 [2025-02-05 11:57:03,751 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 11:57:03,753 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 169 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 11:57:03,753 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 30 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 11:57:03,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17441 states. [2025-02-05 11:57:03,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17441 to 15796. [2025-02-05 11:57:03,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15796 states, 15795 states have (on average 1.0188034188034187) internal successors, (16092), 15795 states have internal predecessors, (16092), 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) [2025-02-05 11:57:03,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15796 states to 15796 states and 16092 transitions. [2025-02-05 11:57:03,875 INFO L78 Accepts]: Start accepts. Automaton has 15796 states and 16092 transitions. Word has length 1921 [2025-02-05 11:57:03,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 11:57:03,876 INFO L471 AbstractCegarLoop]: Abstraction has 15796 states and 16092 transitions. [2025-02-05 11:57:03,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 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) [2025-02-05 11:57:03,876 INFO L276 IsEmpty]: Start isEmpty. Operand 15796 states and 16092 transitions. [2025-02-05 11:57:03,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1988 [2025-02-05 11:57:03,949 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 11:57:03,950 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 11:57:03,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-02-05 11:57:03,950 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 11:57:03,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 11:57:03,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1204893904, now seen corresponding path program 1 times [2025-02-05 11:57:03,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 11:57:03,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748277468] [2025-02-05 11:57:03,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:57:03,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 11:57:04,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1987 statements into 1 equivalence classes. [2025-02-05 11:57:04,085 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1987 of 1987 statements. [2025-02-05 11:57:04,085 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:57:04,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:57:05,588 INFO L134 CoverageAnalysis]: Checked inductivity of 7960 backedges. 3864 proven. 32 refuted. 0 times theorem prover too weak. 4064 trivial. 0 not checked. [2025-02-05 11:57:05,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 11:57:05,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748277468] [2025-02-05 11:57:05,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748277468] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 11:57:05,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867309392] [2025-02-05 11:57:05,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:57:05,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 11:57:05,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 11:57:05,591 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) [2025-02-05 11:57:05,592 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 [2025-02-05 11:57:05,705 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1987 statements into 1 equivalence classes. [2025-02-05 11:57:05,944 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1987 of 1987 statements. [2025-02-05 11:57:05,944 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:57:05,944 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:57:05,950 INFO L256 TraceCheckSpWp]: Trace formula consists of 2288 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 11:57:05,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 11:57:06,485 INFO L134 CoverageAnalysis]: Checked inductivity of 7960 backedges. 4915 proven. 0 refuted. 0 times theorem prover too weak. 3045 trivial. 0 not checked. [2025-02-05 11:57:06,486 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 11:57:06,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867309392] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 11:57:06,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 11:57:06,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2025-02-05 11:57:06,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249264655] [2025-02-05 11:57:06,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 11:57:06,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 11:57:06,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 11:57:06,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 11:57:06,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-05 11:57:06,488 INFO L87 Difference]: Start difference. First operand 15796 states and 16092 transitions. Second operand has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 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) [2025-02-05 11:57:07,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 11:57:07,087 INFO L93 Difference]: Finished difference Result 30603 states and 31189 transitions. [2025-02-05 11:57:07,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 11:57:07,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 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) Word has length 1987 [2025-02-05 11:57:07,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 11:57:07,107 INFO L225 Difference]: With dead ends: 30603 [2025-02-05 11:57:07,107 INFO L226 Difference]: Without dead ends: 15796 [2025-02-05 11:57:07,117 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1990 GetRequests, 1986 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-05 11:57:07,118 INFO L435 NwaCegarLoop]: 418 mSDtfsCounter, 122 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-05 11:57:07,118 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 423 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-05 11:57:07,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15796 states. [2025-02-05 11:57:07,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15796 to 15796. [2025-02-05 11:57:07,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15796 states, 15795 states have (on average 1.0182969294080406) internal successors, (16084), 15795 states have internal predecessors, (16084), 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) [2025-02-05 11:57:07,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15796 states to 15796 states and 16084 transitions. [2025-02-05 11:57:07,305 INFO L78 Accepts]: Start accepts. Automaton has 15796 states and 16084 transitions. Word has length 1987 [2025-02-05 11:57:07,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 11:57:07,306 INFO L471 AbstractCegarLoop]: Abstraction has 15796 states and 16084 transitions. [2025-02-05 11:57:07,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 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) [2025-02-05 11:57:07,306 INFO L276 IsEmpty]: Start isEmpty. Operand 15796 states and 16084 transitions. [2025-02-05 11:57:07,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2009 [2025-02-05 11:57:07,357 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 11:57:07,357 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 11:57:07,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-05 11:57:07,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 11:57:07,561 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 11:57:07,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 11:57:07,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1723368445, now seen corresponding path program 1 times [2025-02-05 11:57:07,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 11:57:07,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236883497] [2025-02-05 11:57:07,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:57:07,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 11:57:07,677 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2008 statements into 1 equivalence classes. [2025-02-05 11:57:07,743 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2008 of 2008 statements. [2025-02-05 11:57:07,743 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:57:07,744 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:57:09,692 INFO L134 CoverageAnalysis]: Checked inductivity of 7731 backedges. 5658 proven. 153 refuted. 0 times theorem prover too weak. 1920 trivial. 0 not checked. [2025-02-05 11:57:09,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 11:57:09,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236883497] [2025-02-05 11:57:09,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236883497] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 11:57:09,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254885667] [2025-02-05 11:57:09,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:57:09,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 11:57:09,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 11:57:09,695 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) [2025-02-05 11:57:09,697 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 [2025-02-05 11:57:09,820 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2008 statements into 1 equivalence classes. [2025-02-05 11:57:10,105 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2008 of 2008 statements. [2025-02-05 11:57:10,106 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:57:10,106 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:57:10,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 2303 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 11:57:10,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 11:57:10,228 INFO L134 CoverageAnalysis]: Checked inductivity of 7731 backedges. 4497 proven. 0 refuted. 0 times theorem prover too weak. 3234 trivial. 0 not checked. [2025-02-05 11:57:10,228 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 11:57:10,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254885667] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 11:57:10,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 11:57:10,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2025-02-05 11:57:10,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011477442] [2025-02-05 11:57:10,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 11:57:10,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 11:57:10,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 11:57:10,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 11:57:10,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-05 11:57:10,231 INFO L87 Difference]: Start difference. First operand 15796 states and 16084 transitions. Second operand has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 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) [2025-02-05 11:57:10,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 11:57:10,863 INFO L93 Difference]: Finished difference Result 32577 states and 33196 transitions. [2025-02-05 11:57:10,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 11:57:10,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 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) Word has length 2008 [2025-02-05 11:57:10,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 11:57:10,876 INFO L225 Difference]: With dead ends: 32577 [2025-02-05 11:57:10,876 INFO L226 Difference]: Without dead ends: 17770 [2025-02-05 11:57:10,883 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2013 GetRequests, 2008 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-05 11:57:10,883 INFO L435 NwaCegarLoop]: 419 mSDtfsCounter, 221 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 11:57:10,887 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 425 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 11:57:10,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17770 states. [2025-02-05 11:57:10,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17770 to 17112. [2025-02-05 11:57:10,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17112 states, 17111 states have (on average 1.0175910233183332) internal successors, (17412), 17111 states have internal predecessors, (17412), 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) [2025-02-05 11:57:10,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17112 states to 17112 states and 17412 transitions. [2025-02-05 11:57:10,999 INFO L78 Accepts]: Start accepts. Automaton has 17112 states and 17412 transitions. Word has length 2008 [2025-02-05 11:57:10,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 11:57:11,001 INFO L471 AbstractCegarLoop]: Abstraction has 17112 states and 17412 transitions. [2025-02-05 11:57:11,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 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) [2025-02-05 11:57:11,001 INFO L276 IsEmpty]: Start isEmpty. Operand 17112 states and 17412 transitions. [2025-02-05 11:57:11,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2040 [2025-02-05 11:57:11,022 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 11:57:11,023 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 11:57:11,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-05 11:57:11,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 11:57:11,224 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 11:57:11,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 11:57:11,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1634476683, now seen corresponding path program 1 times [2025-02-05 11:57:11,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 11:57:11,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158419487] [2025-02-05 11:57:11,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:57:11,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 11:57:11,318 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2039 statements into 1 equivalence classes. [2025-02-05 11:57:11,384 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2039 of 2039 statements. [2025-02-05 11:57:11,384 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:57:11,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:57:13,293 INFO L134 CoverageAnalysis]: Checked inductivity of 8139 backedges. 6138 proven. 91 refuted. 0 times theorem prover too weak. 1910 trivial. 0 not checked. [2025-02-05 11:57:13,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 11:57:13,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158419487] [2025-02-05 11:57:13,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158419487] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 11:57:13,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960450903] [2025-02-05 11:57:13,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:57:13,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 11:57:13,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 11:57:13,295 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) [2025-02-05 11:57:13,296 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 [2025-02-05 11:57:13,475 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2039 statements into 1 equivalence classes. [2025-02-05 11:57:13,720 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2039 of 2039 statements. [2025-02-05 11:57:13,720 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:57:13,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:57:13,727 INFO L256 TraceCheckSpWp]: Trace formula consists of 2337 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-05 11:57:13,737 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 11:57:18,490 INFO L134 CoverageAnalysis]: Checked inductivity of 8139 backedges. 5396 proven. 67 refuted. 0 times theorem prover too weak. 2676 trivial. 0 not checked. [2025-02-05 11:57:18,491 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 11:57:21,104 INFO L134 CoverageAnalysis]: Checked inductivity of 8139 backedges. 4431 proven. 0 refuted. 0 times theorem prover too weak. 3708 trivial. 0 not checked. [2025-02-05 11:57:21,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960450903] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-05 11:57:21,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-05 11:57:21,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 4] total 9 [2025-02-05 11:57:21,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043373735] [2025-02-05 11:57:21,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 11:57:21,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 11:57:21,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 11:57:21,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 11:57:21,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-02-05 11:57:21,107 INFO L87 Difference]: Start difference. First operand 17112 states and 17412 transitions. Second operand has 3 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 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) [2025-02-05 11:57:21,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 11:57:21,869 INFO L93 Difference]: Finished difference Result 34222 states and 34835 transitions. [2025-02-05 11:57:21,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 11:57:21,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 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) Word has length 2039 [2025-02-05 11:57:21,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 11:57:21,883 INFO L225 Difference]: With dead ends: 34222 [2025-02-05 11:57:21,884 INFO L226 Difference]: Without dead ends: 18099 [2025-02-05 11:57:21,893 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4082 GetRequests, 4075 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-02-05 11:57:21,894 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 269 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-05 11:57:21,894 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 38 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-05 11:57:21,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18099 states. [2025-02-05 11:57:21,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18099 to 17441. [2025-02-05 11:57:22,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17441 states, 17440 states have (on average 1.0168577981651377) internal successors, (17734), 17440 states have internal predecessors, (17734), 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) [2025-02-05 11:57:22,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17441 states to 17441 states and 17734 transitions. [2025-02-05 11:57:22,023 INFO L78 Accepts]: Start accepts. Automaton has 17441 states and 17734 transitions. Word has length 2039 [2025-02-05 11:57:22,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 11:57:22,023 INFO L471 AbstractCegarLoop]: Abstraction has 17441 states and 17734 transitions. [2025-02-05 11:57:22,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 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) [2025-02-05 11:57:22,024 INFO L276 IsEmpty]: Start isEmpty. Operand 17441 states and 17734 transitions. [2025-02-05 11:57:22,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2090 [2025-02-05 11:57:22,046 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 11:57:22,046 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 11:57:22,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-05 11:57:22,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 11:57:22,247 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 11:57:22,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 11:57:22,248 INFO L85 PathProgramCache]: Analyzing trace with hash -2045704775, now seen corresponding path program 1 times [2025-02-05 11:57:22,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 11:57:22,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441497994] [2025-02-05 11:57:22,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:57:22,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 11:57:22,337 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2089 statements into 1 equivalence classes. [2025-02-05 11:57:22,401 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2089 of 2089 statements. [2025-02-05 11:57:22,401 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:57:22,401 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:57:24,762 INFO L134 CoverageAnalysis]: Checked inductivity of 8502 backedges. 6522 proven. 220 refuted. 0 times theorem prover too weak. 1760 trivial. 0 not checked. [2025-02-05 11:57:24,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 11:57:24,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441497994] [2025-02-05 11:57:24,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441497994] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 11:57:24,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837536169] [2025-02-05 11:57:24,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:57:24,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 11:57:24,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 11:57:24,765 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) [2025-02-05 11:57:24,766 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 [2025-02-05 11:57:24,888 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2089 statements into 1 equivalence classes. [2025-02-05 11:57:25,144 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2089 of 2089 statements. [2025-02-05 11:57:25,144 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:57:25,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:57:25,151 INFO L256 TraceCheckSpWp]: Trace formula consists of 2389 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-05 11:57:25,160 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 11:57:25,849 INFO L134 CoverageAnalysis]: Checked inductivity of 8502 backedges. 5386 proven. 250 refuted. 0 times theorem prover too weak. 2866 trivial. 0 not checked. [2025-02-05 11:57:25,850 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 11:57:27,031 INFO L134 CoverageAnalysis]: Checked inductivity of 8502 backedges. 4498 proven. 0 refuted. 0 times theorem prover too weak. 4004 trivial. 0 not checked. [2025-02-05 11:57:27,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837536169] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-05 11:57:27,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-05 11:57:27,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 4] total 8 [2025-02-05 11:57:27,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277084165] [2025-02-05 11:57:27,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 11:57:27,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 11:57:27,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 11:57:27,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 11:57:27,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-05 11:57:27,033 INFO L87 Difference]: Start difference. First operand 17441 states and 17734 transitions. Second operand has 3 states, 3 states have (on average 256.3333333333333) internal successors, (769), 3 states have internal predecessors, (769), 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) [2025-02-05 11:57:27,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 11:57:27,761 INFO L93 Difference]: Finished difference Result 34222 states and 34804 transitions. [2025-02-05 11:57:27,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 11:57:27,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 256.3333333333333) internal successors, (769), 3 states have internal predecessors, (769), 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) Word has length 2089 [2025-02-05 11:57:27,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 11:57:27,775 INFO L225 Difference]: With dead ends: 34222 [2025-02-05 11:57:27,775 INFO L226 Difference]: Without dead ends: 17441 [2025-02-05 11:57:27,784 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4183 GetRequests, 4177 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-05 11:57:27,785 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 86 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-05 11:57:27,786 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 19 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-05 11:57:27,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17441 states. [2025-02-05 11:57:27,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17441 to 17441. [2025-02-05 11:57:28,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17441 states, 17440 states have (on average 1.016743119266055) internal successors, (17732), 17440 states have internal predecessors, (17732), 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) [2025-02-05 11:57:28,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17441 states to 17441 states and 17732 transitions. [2025-02-05 11:57:28,016 INFO L78 Accepts]: Start accepts. Automaton has 17441 states and 17732 transitions. Word has length 2089 [2025-02-05 11:57:28,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 11:57:28,017 INFO L471 AbstractCegarLoop]: Abstraction has 17441 states and 17732 transitions. [2025-02-05 11:57:28,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 256.3333333333333) internal successors, (769), 3 states have internal predecessors, (769), 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) [2025-02-05 11:57:28,017 INFO L276 IsEmpty]: Start isEmpty. Operand 17441 states and 17732 transitions. [2025-02-05 11:57:28,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2157 [2025-02-05 11:57:28,042 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 11:57:28,043 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 11:57:28,051 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-05 11:57:28,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-02-05 11:57:28,246 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 11:57:28,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 11:57:28,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1018698197, now seen corresponding path program 1 times [2025-02-05 11:57:28,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 11:57:28,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264546036] [2025-02-05 11:57:28,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:57:28,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 11:57:28,335 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2156 statements into 1 equivalence classes. [2025-02-05 11:57:28,396 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2156 of 2156 statements. [2025-02-05 11:57:28,397 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:57:28,397 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:57:31,634 INFO L134 CoverageAnalysis]: Checked inductivity of 9262 backedges. 5518 proven. 1560 refuted. 0 times theorem prover too weak. 2184 trivial. 0 not checked. [2025-02-05 11:57:31,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 11:57:31,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264546036] [2025-02-05 11:57:31,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264546036] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 11:57:31,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816299025] [2025-02-05 11:57:31,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:57:31,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 11:57:31,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 11:57:31,637 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) [2025-02-05 11:57:31,638 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 [2025-02-05 11:57:31,766 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2156 statements into 1 equivalence classes. [2025-02-05 11:57:32,023 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2156 of 2156 statements. [2025-02-05 11:57:32,023 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:57:32,023 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 11:57:32,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 2476 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 11:57:32,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 11:57:32,728 INFO L134 CoverageAnalysis]: Checked inductivity of 9262 backedges. 5753 proven. 0 refuted. 0 times theorem prover too weak. 3509 trivial. 0 not checked. [2025-02-05 11:57:32,728 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 11:57:32,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816299025] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 11:57:32,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 11:57:32,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 11:57:32,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000435531] [2025-02-05 11:57:32,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 11:57:32,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 11:57:32,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 11:57:32,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 11:57:32,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 11:57:32,730 INFO L87 Difference]: Start difference. First operand 17441 states and 17732 transitions. Second operand has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 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) [2025-02-05 11:57:33,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 11:57:33,416 INFO L93 Difference]: Finished difference Result 35209 states and 35810 transitions. [2025-02-05 11:57:33,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 11:57:33,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 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) Word has length 2156 [2025-02-05 11:57:33,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 11:57:33,433 INFO L225 Difference]: With dead ends: 35209 [2025-02-05 11:57:33,433 INFO L226 Difference]: Without dead ends: 18428 [2025-02-05 11:57:33,442 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2161 GetRequests, 2157 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 11:57:33,442 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 52 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 11:57:33,443 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 91 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 11:57:33,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18428 states. [2025-02-05 11:57:33,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18428 to 17770. [2025-02-05 11:57:33,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17770 states, 17769 states have (on average 1.01693961393438) internal successors, (18070), 17769 states have internal predecessors, (18070), 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) [2025-02-05 11:57:33,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17770 states to 17770 states and 18070 transitions. [2025-02-05 11:57:33,561 INFO L78 Accepts]: Start accepts. Automaton has 17770 states and 18070 transitions. Word has length 2156 [2025-02-05 11:57:33,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 11:57:33,562 INFO L471 AbstractCegarLoop]: Abstraction has 17770 states and 18070 transitions. [2025-02-05 11:57:33,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 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) [2025-02-05 11:57:33,562 INFO L276 IsEmpty]: Start isEmpty. Operand 17770 states and 18070 transitions. [2025-02-05 11:57:33,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2320 [2025-02-05 11:57:33,588 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 11:57:33,588 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 11:57:33,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-05 11:57:33,789 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,SelfDestructingSolverStorable26 [2025-02-05 11:57:33,789 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 11:57:33,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 11:57:33,790 INFO L85 PathProgramCache]: Analyzing trace with hash -156973967, now seen corresponding path program 1 times [2025-02-05 11:57:33,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 11:57:33,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278262892] [2025-02-05 11:57:33,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 11:57:33,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 11:57:33,890 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2319 statements into 1 equivalence classes. [2025-02-05 11:57:33,980 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2319 of 2319 statements. [2025-02-05 11:57:33,983 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 11:57:33,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat