./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-54.i --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/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-54.i -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 d8c08ca97dd545a810e8bc96a865afc430829cbfc14494ef87537262cc33351e --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 21:59:10,554 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 21:59:10,641 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 21:59:10,648 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 21:59:10,649 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 21:59:10,684 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 21:59:10,685 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 21:59:10,685 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 21:59:10,685 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 21:59:10,686 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 21:59:10,686 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 21:59:10,686 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 21:59:10,686 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 21:59:10,686 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 21:59:10,686 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 21:59:10,687 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 21:59:10,687 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 21:59:10,687 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 21:59:10,687 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 21:59:10,687 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 21:59:10,687 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 21:59:10,687 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 21:59:10,687 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 21:59:10,688 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 21:59:10,688 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 21:59:10,688 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 21:59:10,688 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 21:59:10,688 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 21:59:10,688 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 21:59:10,688 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 21:59:10,689 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 21:59:10,689 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 21:59:10,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 21:59:10,689 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 21:59:10,689 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 21:59:10,690 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 21:59:10,690 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 21:59:10,690 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 21:59:10,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 21:59:10,690 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 21:59:10,690 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 21:59:10,690 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 21:59:10,690 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 21:59:10,690 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 -> d8c08ca97dd545a810e8bc96a865afc430829cbfc14494ef87537262cc33351e [2025-02-05 21:59:11,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 21:59:11,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 21:59:11,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 21:59:11,034 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 21:59:11,034 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 21:59:11,036 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-54.i [2025-02-05 21:59:12,454 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4715bc93c/c40a2ee85636420aa02e517660cfe594/FLAG967aa902a [2025-02-05 21:59:12,842 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 21:59:12,844 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-54.i [2025-02-05 21:59:12,863 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4715bc93c/c40a2ee85636420aa02e517660cfe594/FLAG967aa902a [2025-02-05 21:59:12,883 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4715bc93c/c40a2ee85636420aa02e517660cfe594 [2025-02-05 21:59:12,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 21:59:12,888 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 21:59:12,890 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 21:59:12,890 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 21:59:12,894 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 21:59:12,895 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 09:59:12" (1/1) ... [2025-02-05 21:59:12,896 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65a736b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:59:12, skipping insertion in model container [2025-02-05 21:59:12,896 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 09:59:12" (1/1) ... [2025-02-05 21:59:12,939 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 21:59:13,083 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/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-54.i[916,929] [2025-02-05 21:59:13,303 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 21:59:13,328 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 21:59:13,338 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/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-54.i[916,929] [2025-02-05 21:59:13,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 21:59:13,488 INFO L204 MainTranslator]: Completed translation [2025-02-05 21:59:13,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:59:13 WrapperNode [2025-02-05 21:59:13,490 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 21:59:13,491 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 21:59:13,491 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 21:59:13,491 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 21:59:13,497 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:59:13" (1/1) ... [2025-02-05 21:59:13,526 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:59:13" (1/1) ... [2025-02-05 21:59:13,616 INFO L138 Inliner]: procedures = 26, calls = 128, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 862 [2025-02-05 21:59:13,617 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 21:59:13,618 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 21:59:13,618 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 21:59:13,618 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 21:59:13,626 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:59:13" (1/1) ... [2025-02-05 21:59:13,627 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:59:13" (1/1) ... [2025-02-05 21:59:13,643 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:59:13" (1/1) ... [2025-02-05 21:59:13,685 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 21:59:13,686 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:59:13" (1/1) ... [2025-02-05 21:59:13,686 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:59:13" (1/1) ... [2025-02-05 21:59:13,719 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:59:13" (1/1) ... [2025-02-05 21:59:13,733 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:59:13" (1/1) ... [2025-02-05 21:59:13,739 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:59:13" (1/1) ... [2025-02-05 21:59:13,744 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:59:13" (1/1) ... [2025-02-05 21:59:13,756 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 21:59:13,757 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 21:59:13,757 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 21:59:13,757 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 21:59:13,759 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:59:13" (1/1) ... [2025-02-05 21:59:13,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 21:59:13,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 21:59:13,794 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 21:59:13,797 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 21:59:13,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 21:59:13,821 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-05 21:59:13,821 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-05 21:59:13,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 21:59:13,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 21:59:13,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 21:59:13,965 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 21:59:13,967 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 21:59:15,217 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2025-02-05 21:59:15,218 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 21:59:15,270 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 21:59:15,271 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 21:59:15,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 09:59:15 BoogieIcfgContainer [2025-02-05 21:59:15,271 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 21:59:15,278 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 21:59:15,278 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 21:59:15,282 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 21:59:15,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 09:59:12" (1/3) ... [2025-02-05 21:59:15,283 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2295676a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 09:59:15, skipping insertion in model container [2025-02-05 21:59:15,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:59:13" (2/3) ... [2025-02-05 21:59:15,284 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2295676a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 09:59:15, skipping insertion in model container [2025-02-05 21:59:15,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 09:59:15" (3/3) ... [2025-02-05 21:59:15,285 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-54.i [2025-02-05 21:59:15,301 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 21:59:15,306 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-54.i that has 2 procedures, 352 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-05 21:59:15,388 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 21:59:15,400 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;@34a74de9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 21:59:15,401 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 21:59:15,406 INFO L276 IsEmpty]: Start isEmpty. Operand has 352 states, 234 states have (on average 1.5726495726495726) internal successors, (368), 235 states have internal predecessors, (368), 115 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) [2025-02-05 21:59:15,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2025-02-05 21:59:15,442 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 21:59:15,444 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:59:15,444 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 21:59:15,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 21:59:15,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1843541971, now seen corresponding path program 1 times [2025-02-05 21:59:15,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 21:59:15,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065500260] [2025-02-05 21:59:15,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:59:15,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 21:59:15,616 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 721 statements into 1 equivalence classes. [2025-02-05 21:59:15,687 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 721 of 721 statements. [2025-02-05 21:59:15,688 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:59:15,688 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 21:59:16,293 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 25992 trivial. 0 not checked. [2025-02-05 21:59:16,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 21:59:16,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065500260] [2025-02-05 21:59:16,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065500260] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 21:59:16,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705774804] [2025-02-05 21:59:16,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:59:16,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 21:59:16,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 21:59:16,300 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 21:59:16,302 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 21:59:16,539 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 721 statements into 1 equivalence classes. [2025-02-05 21:59:16,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 721 of 721 statements. [2025-02-05 21:59:16,802 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:59:16,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 21:59:16,813 INFO L256 TraceCheckSpWp]: Trace formula consists of 1607 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-05 21:59:16,839 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 21:59:16,921 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 25992 trivial. 0 not checked. [2025-02-05 21:59:16,922 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 21:59:16,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705774804] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 21:59:16,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 21:59:16,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-05 21:59:16,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629147492] [2025-02-05 21:59:16,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 21:59:16,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-05 21:59:16,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 21:59:16,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-05 21:59:16,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 21:59:16,959 INFO L87 Difference]: Start difference. First operand has 352 states, 234 states have (on average 1.5726495726495726) internal successors, (368), 235 states have internal predecessors, (368), 115 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) Second operand has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 2 states have call successors, (115) [2025-02-05 21:59:17,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 21:59:17,075 INFO L93 Difference]: Finished difference Result 698 states and 1306 transitions. [2025-02-05 21:59:17,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-05 21:59:17,079 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 2 states have call successors, (115) Word has length 721 [2025-02-05 21:59:17,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 21:59:17,089 INFO L225 Difference]: With dead ends: 698 [2025-02-05 21:59:17,089 INFO L226 Difference]: Without dead ends: 349 [2025-02-05 21:59:17,109 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 722 GetRequests, 722 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 21:59:17,113 INFO L435 NwaCegarLoop]: 574 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 21:59:17,114 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 574 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 21:59:17,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2025-02-05 21:59:17,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2025-02-05 21:59:17,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 232 states have (on average 1.5560344827586208) internal successors, (361), 232 states have internal predecessors, (361), 115 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) [2025-02-05 21:59:17,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 591 transitions. [2025-02-05 21:59:17,228 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 591 transitions. Word has length 721 [2025-02-05 21:59:17,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 21:59:17,232 INFO L471 AbstractCegarLoop]: Abstraction has 349 states and 591 transitions. [2025-02-05 21:59:17,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 2 states have call successors, (115) [2025-02-05 21:59:17,232 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 591 transitions. [2025-02-05 21:59:17,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2025-02-05 21:59:17,253 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 21:59:17,254 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:59:17,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-05 21:59:17,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-02-05 21:59:17,458 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 21:59:17,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 21:59:17,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1310994456, now seen corresponding path program 1 times [2025-02-05 21:59:17,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 21:59:17,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585388560] [2025-02-05 21:59:17,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:59:17,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 21:59:17,525 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 721 statements into 1 equivalence classes. [2025-02-05 21:59:17,664 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 721 of 721 statements. [2025-02-05 21:59:17,666 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:59:17,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 21:59:18,415 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26220 trivial. 0 not checked. [2025-02-05 21:59:18,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 21:59:18,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585388560] [2025-02-05 21:59:18,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585388560] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 21:59:18,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 21:59:18,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 21:59:18,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583553644] [2025-02-05 21:59:18,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 21:59:18,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 21:59:18,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 21:59:18,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 21:59:18,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 21:59:18,424 INFO L87 Difference]: Start difference. First operand 349 states and 591 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2025-02-05 21:59:18,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 21:59:18,574 INFO L93 Difference]: Finished difference Result 883 states and 1499 transitions. [2025-02-05 21:59:18,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 21:59:18,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) Word has length 721 [2025-02-05 21:59:18,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 21:59:18,582 INFO L225 Difference]: With dead ends: 883 [2025-02-05 21:59:18,582 INFO L226 Difference]: Without dead ends: 537 [2025-02-05 21:59:18,584 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 21:59:18,585 INFO L435 NwaCegarLoop]: 571 mSDtfsCounter, 282 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 21:59:18,585 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 1128 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 21:59:18,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2025-02-05 21:59:18,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 534. [2025-02-05 21:59:18,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 372 states have (on average 1.5806451612903225) internal successors, (588), 373 states have internal predecessors, (588), 159 states have call successors, (159), 2 states have call predecessors, (159), 2 states have return successors, (159), 158 states have call predecessors, (159), 159 states have call successors, (159) [2025-02-05 21:59:18,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 906 transitions. [2025-02-05 21:59:18,686 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 906 transitions. Word has length 721 [2025-02-05 21:59:18,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 21:59:18,690 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 906 transitions. [2025-02-05 21:59:18,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2025-02-05 21:59:18,691 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 906 transitions. [2025-02-05 21:59:18,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2025-02-05 21:59:18,699 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 21:59:18,700 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:59:18,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 21:59:18,700 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 21:59:18,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 21:59:18,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1522345369, now seen corresponding path program 1 times [2025-02-05 21:59:18,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 21:59:18,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455864974] [2025-02-05 21:59:18,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:59:18,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 21:59:18,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 721 statements into 1 equivalence classes. [2025-02-05 21:59:18,874 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 721 of 721 statements. [2025-02-05 21:59:18,874 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:59:18,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 21:59:19,726 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26220 trivial. 0 not checked. [2025-02-05 21:59:19,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 21:59:19,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455864974] [2025-02-05 21:59:19,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455864974] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 21:59:19,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 21:59:19,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 21:59:19,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345216988] [2025-02-05 21:59:19,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 21:59:19,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 21:59:19,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 21:59:19,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 21:59:19,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 21:59:19,732 INFO L87 Difference]: Start difference. First operand 534 states and 906 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2025-02-05 21:59:20,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 21:59:20,441 INFO L93 Difference]: Finished difference Result 1526 states and 2598 transitions. [2025-02-05 21:59:20,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 21:59:20,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) Word has length 721 [2025-02-05 21:59:20,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 21:59:20,454 INFO L225 Difference]: With dead ends: 1526 [2025-02-05 21:59:20,455 INFO L226 Difference]: Without dead ends: 995 [2025-02-05 21:59:20,457 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 21:59:20,457 INFO L435 NwaCegarLoop]: 571 mSDtfsCounter, 572 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 21:59:20,458 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 1705 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [346 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 21:59:20,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2025-02-05 21:59:20,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 965. [2025-02-05 21:59:20,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 686 states have (on average 1.6034985422740524) internal successors, (1100), 687 states have internal predecessors, (1100), 274 states have call successors, (274), 4 states have call predecessors, (274), 4 states have return successors, (274), 273 states have call predecessors, (274), 274 states have call successors, (274) [2025-02-05 21:59:20,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1648 transitions. [2025-02-05 21:59:20,623 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1648 transitions. Word has length 721 [2025-02-05 21:59:20,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 21:59:20,625 INFO L471 AbstractCegarLoop]: Abstraction has 965 states and 1648 transitions. [2025-02-05 21:59:20,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2025-02-05 21:59:20,625 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1648 transitions. [2025-02-05 21:59:20,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2025-02-05 21:59:20,634 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 21:59:20,634 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:59:20,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 21:59:20,635 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 21:59:20,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 21:59:20,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1183464034, now seen corresponding path program 1 times [2025-02-05 21:59:20,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 21:59:20,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072434471] [2025-02-05 21:59:20,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:59:20,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 21:59:20,690 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 722 statements into 1 equivalence classes. [2025-02-05 21:59:20,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 722 of 722 statements. [2025-02-05 21:59:20,793 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:59:20,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 21:59:21,676 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26220 trivial. 0 not checked. [2025-02-05 21:59:21,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 21:59:21,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072434471] [2025-02-05 21:59:21,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072434471] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 21:59:21,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 21:59:21,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 21:59:21,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015151344] [2025-02-05 21:59:21,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 21:59:21,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 21:59:21,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 21:59:21,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 21:59:21,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 21:59:21,680 INFO L87 Difference]: Start difference. First operand 965 states and 1648 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2025-02-05 21:59:21,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 21:59:21,912 INFO L93 Difference]: Finished difference Result 2222 states and 3807 transitions. [2025-02-05 21:59:21,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 21:59:21,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) Word has length 722 [2025-02-05 21:59:21,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 21:59:21,926 INFO L225 Difference]: With dead ends: 2222 [2025-02-05 21:59:21,926 INFO L226 Difference]: Without dead ends: 1651 [2025-02-05 21:59:21,929 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 21:59:21,930 INFO L435 NwaCegarLoop]: 623 mSDtfsCounter, 360 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 1787 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 21:59:21,930 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 1787 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 21:59:21,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2025-02-05 21:59:22,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1649. [2025-02-05 21:59:22,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1649 states, 1209 states have (on average 1.6228287841191067) internal successors, (1962), 1211 states have internal predecessors, (1962), 433 states have call successors, (433), 6 states have call predecessors, (433), 6 states have return successors, (433), 431 states have call predecessors, (433), 433 states have call successors, (433) [2025-02-05 21:59:22,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2828 transitions. [2025-02-05 21:59:22,150 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2828 transitions. Word has length 722 [2025-02-05 21:59:22,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 21:59:22,152 INFO L471 AbstractCegarLoop]: Abstraction has 1649 states and 2828 transitions. [2025-02-05 21:59:22,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2025-02-05 21:59:22,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2828 transitions. [2025-02-05 21:59:22,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 724 [2025-02-05 21:59:22,160 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 21:59:22,160 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:59:22,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-05 21:59:22,162 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 21:59:22,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 21:59:22,163 INFO L85 PathProgramCache]: Analyzing trace with hash 988193846, now seen corresponding path program 1 times [2025-02-05 21:59:22,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 21:59:22,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117053073] [2025-02-05 21:59:22,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:59:22,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 21:59:22,214 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 723 statements into 1 equivalence classes. [2025-02-05 21:59:22,564 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 723 of 723 statements. [2025-02-05 21:59:22,564 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:59:22,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 21:59:23,426 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26220 trivial. 0 not checked. [2025-02-05 21:59:23,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 21:59:23,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117053073] [2025-02-05 21:59:23,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117053073] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 21:59:23,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 21:59:23,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 21:59:23,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136961410] [2025-02-05 21:59:23,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 21:59:23,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 21:59:23,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 21:59:23,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 21:59:23,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-05 21:59:23,431 INFO L87 Difference]: Start difference. First operand 1649 states and 2828 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2025-02-05 21:59:24,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 21:59:24,504 INFO L93 Difference]: Finished difference Result 3757 states and 6435 transitions. [2025-02-05 21:59:24,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 21:59:24,505 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) Word has length 723 [2025-02-05 21:59:24,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 21:59:24,523 INFO L225 Difference]: With dead ends: 3757 [2025-02-05 21:59:24,523 INFO L226 Difference]: Without dead ends: 2521 [2025-02-05 21:59:24,528 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-05 21:59:24,529 INFO L435 NwaCegarLoop]: 927 mSDtfsCounter, 890 mSDsluCounter, 1723 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 2650 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-05 21:59:24,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 2650 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-05 21:59:24,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2521 states. [2025-02-05 21:59:24,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2521 to 1807. [2025-02-05 21:59:24,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1807 states, 1455 states have (on average 1.6900343642611684) internal successors, (2459), 1455 states have internal predecessors, (2459), 345 states have call successors, (345), 6 states have call predecessors, (345), 6 states have return successors, (345), 345 states have call predecessors, (345), 345 states have call successors, (345) [2025-02-05 21:59:24,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1807 states to 1807 states and 3149 transitions. [2025-02-05 21:59:24,730 INFO L78 Accepts]: Start accepts. Automaton has 1807 states and 3149 transitions. Word has length 723 [2025-02-05 21:59:24,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 21:59:24,734 INFO L471 AbstractCegarLoop]: Abstraction has 1807 states and 3149 transitions. [2025-02-05 21:59:24,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2025-02-05 21:59:24,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1807 states and 3149 transitions. [2025-02-05 21:59:24,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2025-02-05 21:59:24,768 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 21:59:24,769 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:59:24,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-05 21:59:24,769 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 21:59:24,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 21:59:24,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1074485970, now seen corresponding path program 1 times [2025-02-05 21:59:24,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 21:59:24,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382441731] [2025-02-05 21:59:24,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:59:24,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 21:59:24,817 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 724 statements into 1 equivalence classes. [2025-02-05 21:59:25,373 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 724 of 724 statements. [2025-02-05 21:59:25,373 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:59:25,373 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 21:59:26,644 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 165 proven. 177 refuted. 0 times theorem prover too weak. 25878 trivial. 0 not checked. [2025-02-05 21:59:26,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 21:59:26,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382441731] [2025-02-05 21:59:26,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382441731] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 21:59:26,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689414199] [2025-02-05 21:59:26,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:59:26,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 21:59:26,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 21:59:26,647 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 21:59:26,650 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 21:59:26,860 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 724 statements into 1 equivalence classes. [2025-02-05 21:59:27,048 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 724 of 724 statements. [2025-02-05 21:59:27,049 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:59:27,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 21:59:27,056 INFO L256 TraceCheckSpWp]: Trace formula consists of 1612 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-05 21:59:27,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 21:59:27,701 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 13204 proven. 177 refuted. 0 times theorem prover too weak. 12839 trivial. 0 not checked. [2025-02-05 21:59:27,701 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 21:59:28,547 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 165 proven. 177 refuted. 0 times theorem prover too weak. 25878 trivial. 0 not checked. [2025-02-05 21:59:28,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689414199] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 21:59:28,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 21:59:28,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-02-05 21:59:28,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075774102] [2025-02-05 21:59:28,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 21:59:28,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-05 21:59:28,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 21:59:28,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-05 21:59:28,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2025-02-05 21:59:28,553 INFO L87 Difference]: Start difference. First operand 1807 states and 3149 transitions. Second operand has 17 states, 17 states have (on average 16.176470588235293) internal successors, (275), 17 states have internal predecessors, (275), 3 states have call successors, (233), 2 states have call predecessors, (233), 4 states have return successors, (234), 3 states have call predecessors, (234), 3 states have call successors, (234) [2025-02-05 21:59:32,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 21:59:32,843 INFO L93 Difference]: Finished difference Result 5927 states and 10239 transitions. [2025-02-05 21:59:32,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-02-05 21:59:32,845 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 16.176470588235293) internal successors, (275), 17 states have internal predecessors, (275), 3 states have call successors, (233), 2 states have call predecessors, (233), 4 states have return successors, (234), 3 states have call predecessors, (234), 3 states have call successors, (234) Word has length 724 [2025-02-05 21:59:32,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 21:59:32,877 INFO L225 Difference]: With dead ends: 5927 [2025-02-05 21:59:32,877 INFO L226 Difference]: Without dead ends: 5345 [2025-02-05 21:59:32,882 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1496 GetRequests, 1446 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=629, Invalid=2023, Unknown=0, NotChecked=0, Total=2652 [2025-02-05 21:59:32,884 INFO L435 NwaCegarLoop]: 585 mSDtfsCounter, 1668 mSDsluCounter, 4432 mSDsCounter, 0 mSdLazyCounter, 4292 mSolverCounterSat, 713 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1780 SdHoareTripleChecker+Valid, 5017 SdHoareTripleChecker+Invalid, 5005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 713 IncrementalHoareTripleChecker+Valid, 4292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2025-02-05 21:59:32,884 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1780 Valid, 5017 Invalid, 5005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [713 Valid, 4292 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2025-02-05 21:59:32,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5345 states. [2025-02-05 21:59:33,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5345 to 4877. [2025-02-05 21:59:33,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4877 states, 4137 states have (on average 1.7135605511240029) internal successors, (7089), 4143 states have internal predecessors, (7089), 709 states have call successors, (709), 30 states have call predecessors, (709), 30 states have return successors, (709), 703 states have call predecessors, (709), 709 states have call successors, (709) [2025-02-05 21:59:33,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4877 states to 4877 states and 8507 transitions. [2025-02-05 21:59:33,195 INFO L78 Accepts]: Start accepts. Automaton has 4877 states and 8507 transitions. Word has length 724 [2025-02-05 21:59:33,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 21:59:33,197 INFO L471 AbstractCegarLoop]: Abstraction has 4877 states and 8507 transitions. [2025-02-05 21:59:33,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 16.176470588235293) internal successors, (275), 17 states have internal predecessors, (275), 3 states have call successors, (233), 2 states have call predecessors, (233), 4 states have return successors, (234), 3 states have call predecessors, (234), 3 states have call successors, (234) [2025-02-05 21:59:33,198 INFO L276 IsEmpty]: Start isEmpty. Operand 4877 states and 8507 transitions. [2025-02-05 21:59:33,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2025-02-05 21:59:33,206 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 21:59:33,206 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:59:33,219 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 21:59:33,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 21:59:33,411 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 21:59:33,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 21:59:33,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1514101533, now seen corresponding path program 1 times [2025-02-05 21:59:33,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 21:59:33,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192350600] [2025-02-05 21:59:33,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:59:33,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 21:59:33,457 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 724 statements into 1 equivalence classes. [2025-02-05 21:59:33,742 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 724 of 724 statements. [2025-02-05 21:59:33,743 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:59:33,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 21:59:35,846 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 108 proven. 234 refuted. 0 times theorem prover too weak. 25878 trivial. 0 not checked. [2025-02-05 21:59:35,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 21:59:35,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192350600] [2025-02-05 21:59:35,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192350600] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 21:59:35,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880802117] [2025-02-05 21:59:35,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:59:35,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 21:59:35,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 21:59:35,850 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 21:59:35,856 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 21:59:36,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 724 statements into 1 equivalence classes. [2025-02-05 21:59:36,243 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 724 of 724 statements. [2025-02-05 21:59:36,243 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:59:36,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 21:59:36,252 INFO L256 TraceCheckSpWp]: Trace formula consists of 1612 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-05 21:59:36,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 21:59:37,305 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 14881 proven. 324 refuted. 0 times theorem prover too weak. 11015 trivial. 0 not checked. [2025-02-05 21:59:37,305 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 21:59:38,194 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 165 proven. 177 refuted. 0 times theorem prover too weak. 25878 trivial. 0 not checked. [2025-02-05 21:59:38,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880802117] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 21:59:38,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 21:59:38,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 7] total 24 [2025-02-05 21:59:38,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670691107] [2025-02-05 21:59:38,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 21:59:38,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-05 21:59:38,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 21:59:38,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-05 21:59:38,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2025-02-05 21:59:38,199 INFO L87 Difference]: Start difference. First operand 4877 states and 8507 transitions. Second operand has 24 states, 24 states have (on average 15.25) internal successors, (366), 24 states have internal predecessors, (366), 7 states have call successors, (289), 3 states have call predecessors, (289), 6 states have return successors, (290), 7 states have call predecessors, (290), 7 states have call successors, (290) [2025-02-05 21:59:46,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 21:59:46,615 INFO L93 Difference]: Finished difference Result 13161 states and 22831 transitions. [2025-02-05 21:59:46,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2025-02-05 21:59:46,616 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 15.25) internal successors, (366), 24 states have internal predecessors, (366), 7 states have call successors, (289), 3 states have call predecessors, (289), 6 states have return successors, (290), 7 states have call predecessors, (290), 7 states have call successors, (290) Word has length 724 [2025-02-05 21:59:46,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 21:59:46,659 INFO L225 Difference]: With dead ends: 13161 [2025-02-05 21:59:46,659 INFO L226 Difference]: Without dead ends: 8498 [2025-02-05 21:59:46,673 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1557 GetRequests, 1451 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3924 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2311, Invalid=9245, Unknown=0, NotChecked=0, Total=11556 [2025-02-05 21:59:46,675 INFO L435 NwaCegarLoop]: 897 mSDtfsCounter, 8636 mSDsluCounter, 6919 mSDsCounter, 0 mSdLazyCounter, 7586 mSolverCounterSat, 3591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8690 SdHoareTripleChecker+Valid, 7816 SdHoareTripleChecker+Invalid, 11177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3591 IncrementalHoareTripleChecker+Valid, 7586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2025-02-05 21:59:46,676 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8690 Valid, 7816 Invalid, 11177 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3591 Valid, 7586 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2025-02-05 21:59:46,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8498 states. [2025-02-05 21:59:46,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8498 to 6089. [2025-02-05 21:59:46,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6089 states, 5494 states have (on average 1.7489989078995267) internal successors, (9609), 5498 states have internal predecessors, (9609), 561 states have call successors, (561), 33 states have call predecessors, (561), 33 states have return successors, (561), 557 states have call predecessors, (561), 561 states have call successors, (561) [2025-02-05 21:59:46,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6089 states to 6089 states and 10731 transitions. [2025-02-05 21:59:47,004 INFO L78 Accepts]: Start accepts. Automaton has 6089 states and 10731 transitions. Word has length 724 [2025-02-05 21:59:47,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 21:59:47,005 INFO L471 AbstractCegarLoop]: Abstraction has 6089 states and 10731 transitions. [2025-02-05 21:59:47,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 15.25) internal successors, (366), 24 states have internal predecessors, (366), 7 states have call successors, (289), 3 states have call predecessors, (289), 6 states have return successors, (290), 7 states have call predecessors, (290), 7 states have call successors, (290) [2025-02-05 21:59:47,006 INFO L276 IsEmpty]: Start isEmpty. Operand 6089 states and 10731 transitions. [2025-02-05 21:59:47,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 726 [2025-02-05 21:59:47,014 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 21:59:47,015 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:59:47,027 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 21:59:47,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 21:59:47,220 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 21:59:47,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 21:59:47,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1834729893, now seen corresponding path program 1 times [2025-02-05 21:59:47,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 21:59:47,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586360787] [2025-02-05 21:59:47,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:59:47,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 21:59:47,264 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 725 statements into 1 equivalence classes. [2025-02-05 21:59:47,645 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 725 of 725 statements. [2025-02-05 21:59:47,646 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:59:47,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 21:59:48,202 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 186 proven. 156 refuted. 0 times theorem prover too weak. 25878 trivial. 0 not checked. [2025-02-05 21:59:48,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 21:59:48,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586360787] [2025-02-05 21:59:48,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586360787] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 21:59:48,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752673090] [2025-02-05 21:59:48,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:59:48,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 21:59:48,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 21:59:48,205 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 21:59:48,207 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 21:59:48,439 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 725 statements into 1 equivalence classes. [2025-02-05 21:59:48,614 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 725 of 725 statements. [2025-02-05 21:59:48,614 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:59:48,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 21:59:48,623 INFO L256 TraceCheckSpWp]: Trace formula consists of 1618 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 21:59:48,639 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 21:59:49,083 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 10774 proven. 96 refuted. 0 times theorem prover too weak. 15350 trivial. 0 not checked. [2025-02-05 21:59:49,083 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 21:59:49,774 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 246 proven. 96 refuted. 0 times theorem prover too weak. 25878 trivial. 0 not checked. [2025-02-05 21:59:49,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752673090] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 21:59:49,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 21:59:49,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2025-02-05 21:59:49,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096375192] [2025-02-05 21:59:49,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 21:59:49,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-05 21:59:49,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 21:59:49,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-05 21:59:49,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-02-05 21:59:49,779 INFO L87 Difference]: Start difference. First operand 6089 states and 10731 transitions. Second operand has 11 states, 11 states have (on average 26.0) internal successors, (286), 11 states have internal predecessors, (286), 4 states have call successors, (199), 2 states have call predecessors, (199), 4 states have return successors, (201), 4 states have call predecessors, (201), 4 states have call successors, (201) [2025-02-05 21:59:51,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 21:59:51,589 INFO L93 Difference]: Finished difference Result 15882 states and 27759 transitions. [2025-02-05 21:59:51,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-05 21:59:51,594 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 26.0) internal successors, (286), 11 states have internal predecessors, (286), 4 states have call successors, (199), 2 states have call predecessors, (199), 4 states have return successors, (201), 4 states have call predecessors, (201), 4 states have call successors, (201) Word has length 725 [2025-02-05 21:59:51,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 21:59:51,667 INFO L225 Difference]: With dead ends: 15882 [2025-02-05 21:59:51,667 INFO L226 Difference]: Without dead ends: 10407 [2025-02-05 21:59:51,678 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1478 GetRequests, 1447 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=314, Invalid=742, Unknown=0, NotChecked=0, Total=1056 [2025-02-05 21:59:51,679 INFO L435 NwaCegarLoop]: 510 mSDtfsCounter, 2208 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 1603 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2208 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 2670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1603 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-05 21:59:51,679 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2208 Valid, 1642 Invalid, 2670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1603 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-02-05 21:59:51,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10407 states. [2025-02-05 21:59:52,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10407 to 10271. [2025-02-05 21:59:52,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10271 states, 9265 states have (on average 1.7202374527792768) internal successors, (15938), 9275 states have internal predecessors, (15938), 921 states have call successors, (921), 84 states have call predecessors, (921), 84 states have return successors, (921), 911 states have call predecessors, (921), 921 states have call successors, (921) [2025-02-05 21:59:52,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10271 states to 10271 states and 17780 transitions. [2025-02-05 21:59:52,275 INFO L78 Accepts]: Start accepts. Automaton has 10271 states and 17780 transitions. Word has length 725 [2025-02-05 21:59:52,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 21:59:52,277 INFO L471 AbstractCegarLoop]: Abstraction has 10271 states and 17780 transitions. [2025-02-05 21:59:52,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 26.0) internal successors, (286), 11 states have internal predecessors, (286), 4 states have call successors, (199), 2 states have call predecessors, (199), 4 states have return successors, (201), 4 states have call predecessors, (201), 4 states have call successors, (201) [2025-02-05 21:59:52,278 INFO L276 IsEmpty]: Start isEmpty. Operand 10271 states and 17780 transitions. [2025-02-05 21:59:52,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2025-02-05 21:59:52,293 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 21:59:52,293 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:59:52,306 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 21:59:52,494 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,SelfDestructingSolverStorable7 [2025-02-05 21:59:52,494 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 21:59:52,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 21:59:52,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1023909421, now seen corresponding path program 1 times [2025-02-05 21:59:52,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 21:59:52,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374767042] [2025-02-05 21:59:52,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:59:52,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 21:59:52,631 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 726 statements into 1 equivalence classes. [2025-02-05 21:59:52,709 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 726 of 726 statements. [2025-02-05 21:59:52,709 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:59:52,709 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 21:59:52,946 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26220 trivial. 0 not checked. [2025-02-05 21:59:52,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 21:59:52,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374767042] [2025-02-05 21:59:52,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374767042] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 21:59:52,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 21:59:52,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 21:59:52,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310177966] [2025-02-05 21:59:52,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 21:59:52,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 21:59:52,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 21:59:52,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 21:59:52,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 21:59:52,951 INFO L87 Difference]: Start difference. First operand 10271 states and 17780 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2025-02-05 21:59:53,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 21:59:53,797 INFO L93 Difference]: Finished difference Result 28583 states and 49647 transitions. [2025-02-05 21:59:53,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 21:59:53,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) Word has length 726 [2025-02-05 21:59:53,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 21:59:53,889 INFO L225 Difference]: With dead ends: 28583 [2025-02-05 21:59:53,889 INFO L226 Difference]: Without dead ends: 19318 [2025-02-05 21:59:53,910 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 21:59:53,914 INFO L435 NwaCegarLoop]: 907 mSDtfsCounter, 356 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 21:59:53,914 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 1456 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 21:59:53,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19318 states. [2025-02-05 21:59:54,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19318 to 19308. [2025-02-05 21:59:54,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19308 states, 17734 states have (on average 1.7063832186759895) internal successors, (30261), 17756 states have internal predecessors, (30261), 1449 states have call successors, (1449), 124 states have call predecessors, (1449), 124 states have return successors, (1449), 1427 states have call predecessors, (1449), 1449 states have call successors, (1449) [2025-02-05 21:59:54,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19308 states to 19308 states and 33159 transitions. [2025-02-05 21:59:54,882 INFO L78 Accepts]: Start accepts. Automaton has 19308 states and 33159 transitions. Word has length 726 [2025-02-05 21:59:54,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 21:59:54,883 INFO L471 AbstractCegarLoop]: Abstraction has 19308 states and 33159 transitions. [2025-02-05 21:59:54,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2025-02-05 21:59:54,883 INFO L276 IsEmpty]: Start isEmpty. Operand 19308 states and 33159 transitions. [2025-02-05 21:59:54,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2025-02-05 21:59:54,903 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 21:59:54,904 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:59:54,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-05 21:59:54,904 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 21:59:54,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 21:59:54,905 INFO L85 PathProgramCache]: Analyzing trace with hash -911750866, now seen corresponding path program 1 times [2025-02-05 21:59:54,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 21:59:54,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301811375] [2025-02-05 21:59:54,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:59:54,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 21:59:55,003 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 726 statements into 1 equivalence classes. [2025-02-05 21:59:55,358 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 726 of 726 statements. [2025-02-05 21:59:55,358 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:59:55,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 21:59:55,768 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 204 proven. 138 refuted. 0 times theorem prover too weak. 25878 trivial. 0 not checked. [2025-02-05 21:59:55,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 21:59:55,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301811375] [2025-02-05 21:59:55,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301811375] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 21:59:55,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066989574] [2025-02-05 21:59:55,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 21:59:55,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 21:59:55,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 21:59:55,771 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 21:59:55,773 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 21:59:56,009 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 726 statements into 1 equivalence classes. [2025-02-05 21:59:56,166 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 726 of 726 statements. [2025-02-05 21:59:56,166 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 21:59:56,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 21:59:56,172 INFO L256 TraceCheckSpWp]: Trace formula consists of 1619 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-05 21:59:56,184 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 21:59:57,093 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 13244 proven. 354 refuted. 0 times theorem prover too weak. 12622 trivial. 0 not checked. [2025-02-05 21:59:57,093 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 21:59:57,899 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 324 proven. 357 refuted. 0 times theorem prover too weak. 25539 trivial. 0 not checked. [2025-02-05 21:59:57,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066989574] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 21:59:57,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 21:59:57,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 15 [2025-02-05 21:59:57,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74941010] [2025-02-05 21:59:57,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 21:59:57,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-05 21:59:57,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 21:59:57,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-05 21:59:57,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2025-02-05 21:59:57,902 INFO L87 Difference]: Start difference. First operand 19308 states and 33159 transitions. Second operand has 15 states, 14 states have (on average 21.928571428571427) internal successors, (307), 13 states have internal predecessors, (307), 6 states have call successors, (235), 3 states have call predecessors, (235), 6 states have return successors, (237), 6 states have call predecessors, (237), 6 states have call successors, (237) [2025-02-05 21:59:59,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 21:59:59,602 INFO L93 Difference]: Finished difference Result 27121 states and 46359 transitions. [2025-02-05 21:59:59,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-05 21:59:59,603 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 21.928571428571427) internal successors, (307), 13 states have internal predecessors, (307), 6 states have call successors, (235), 3 states have call predecessors, (235), 6 states have return successors, (237), 6 states have call predecessors, (237), 6 states have call successors, (237) Word has length 726 [2025-02-05 21:59:59,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 21:59:59,636 INFO L225 Difference]: With dead ends: 27121 [2025-02-05 21:59:59,636 INFO L226 Difference]: Without dead ends: 10173 [2025-02-05 21:59:59,661 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1470 GetRequests, 1443 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=248, Invalid=564, Unknown=0, NotChecked=0, Total=812 [2025-02-05 21:59:59,662 INFO L435 NwaCegarLoop]: 533 mSDtfsCounter, 1220 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 1992 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 2040 SdHoareTripleChecker+Invalid, 2406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-02-05 21:59:59,662 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1275 Valid, 2040 Invalid, 2406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1992 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-02-05 21:59:59,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10173 states. [2025-02-05 22:00:00,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10173 to 6557. [2025-02-05 22:00:00,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6557 states, 5625 states have (on average 1.6366222222222222) internal successors, (9206), 5635 states have internal predecessors, (9206), 849 states have call successors, (849), 82 states have call predecessors, (849), 82 states have return successors, (849), 839 states have call predecessors, (849), 849 states have call successors, (849) [2025-02-05 22:00:00,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6557 states to 6557 states and 10904 transitions. [2025-02-05 22:00:00,324 INFO L78 Accepts]: Start accepts. Automaton has 6557 states and 10904 transitions. Word has length 726 [2025-02-05 22:00:00,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 22:00:00,329 INFO L471 AbstractCegarLoop]: Abstraction has 6557 states and 10904 transitions. [2025-02-05 22:00:00,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 21.928571428571427) internal successors, (307), 13 states have internal predecessors, (307), 6 states have call successors, (235), 3 states have call predecessors, (235), 6 states have return successors, (237), 6 states have call predecessors, (237), 6 states have call successors, (237) [2025-02-05 22:00:00,331 INFO L276 IsEmpty]: Start isEmpty. Operand 6557 states and 10904 transitions. [2025-02-05 22:00:00,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2025-02-05 22:00:00,346 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 22:00:00,346 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:00:00,374 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 22:00:00,547 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,SelfDestructingSolverStorable9 [2025-02-05 22:00:00,547 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 22:00:00,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 22:00:00,549 INFO L85 PathProgramCache]: Analyzing trace with hash 89658190, now seen corresponding path program 1 times [2025-02-05 22:00:00,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 22:00:00,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242571412] [2025-02-05 22:00:00,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 22:00:00,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 22:00:00,586 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 727 statements into 1 equivalence classes. [2025-02-05 22:00:00,898 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 727 of 727 statements. [2025-02-05 22:00:00,899 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 22:00:00,899 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 22:00:01,336 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 180 proven. 162 refuted. 0 times theorem prover too weak. 25878 trivial. 0 not checked. [2025-02-05 22:00:01,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 22:00:01,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242571412] [2025-02-05 22:00:01,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242571412] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 22:00:01,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263468941] [2025-02-05 22:00:01,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 22:00:01,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 22:00:01,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 22:00:01,340 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 22:00:01,342 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 22:00:01,574 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 727 statements into 1 equivalence classes. [2025-02-05 22:00:01,769 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 727 of 727 statements. [2025-02-05 22:00:01,769 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 22:00:01,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 22:00:01,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 1618 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-05 22:00:01,786 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 22:00:02,209 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 11108 proven. 111 refuted. 0 times theorem prover too weak. 15001 trivial. 0 not checked. [2025-02-05 22:00:02,209 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 22:00:02,729 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 567 proven. 114 refuted. 0 times theorem prover too weak. 25539 trivial. 0 not checked. [2025-02-05 22:00:02,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263468941] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 22:00:02,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 22:00:02,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 10] total 20 [2025-02-05 22:00:02,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667347937] [2025-02-05 22:00:02,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 22:00:02,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-05 22:00:02,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 22:00:02,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-05 22:00:02,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2025-02-05 22:00:02,736 INFO L87 Difference]: Start difference. First operand 6557 states and 10904 transitions. Second operand has 20 states, 20 states have (on average 16.35) internal successors, (327), 20 states have internal predecessors, (327), 7 states have call successors, (199), 3 states have call predecessors, (199), 7 states have return successors, (201), 7 states have call predecessors, (201), 7 states have call successors, (201) [2025-02-05 22:00:05,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 22:00:05,082 INFO L93 Difference]: Finished difference Result 18171 states and 30187 transitions. [2025-02-05 22:00:05,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-05 22:00:05,083 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 16.35) internal successors, (327), 20 states have internal predecessors, (327), 7 states have call successors, (199), 3 states have call predecessors, (199), 7 states have return successors, (201), 7 states have call predecessors, (201), 7 states have call successors, (201) Word has length 727 [2025-02-05 22:00:05,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 22:00:05,122 INFO L225 Difference]: With dead ends: 18171 [2025-02-05 22:00:05,122 INFO L226 Difference]: Without dead ends: 12087 [2025-02-05 22:00:05,136 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1484 GetRequests, 1443 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=497, Invalid=1309, Unknown=0, NotChecked=0, Total=1806 [2025-02-05 22:00:05,136 INFO L435 NwaCegarLoop]: 506 mSDtfsCounter, 2293 mSDsluCounter, 2036 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 943 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2294 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 3451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 943 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-02-05 22:00:05,136 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2294 Valid, 2542 Invalid, 3451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [943 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-02-05 22:00:05,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12087 states. [2025-02-05 22:00:05,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12087 to 9895. [2025-02-05 22:00:05,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9895 states, 8942 states have (on average 1.6630507716394543) internal successors, (14871), 8952 states have internal predecessors, (14871), 849 states have call successors, (849), 103 states have call predecessors, (849), 103 states have return successors, (849), 839 states have call predecessors, (849), 849 states have call successors, (849) [2025-02-05 22:00:05,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9895 states to 9895 states and 16569 transitions. [2025-02-05 22:00:05,773 INFO L78 Accepts]: Start accepts. Automaton has 9895 states and 16569 transitions. Word has length 727 [2025-02-05 22:00:05,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 22:00:05,774 INFO L471 AbstractCegarLoop]: Abstraction has 9895 states and 16569 transitions. [2025-02-05 22:00:05,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 16.35) internal successors, (327), 20 states have internal predecessors, (327), 7 states have call successors, (199), 3 states have call predecessors, (199), 7 states have return successors, (201), 7 states have call predecessors, (201), 7 states have call successors, (201) [2025-02-05 22:00:05,774 INFO L276 IsEmpty]: Start isEmpty. Operand 9895 states and 16569 transitions. [2025-02-05 22:00:05,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2025-02-05 22:00:05,785 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 22:00:05,785 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:00:05,799 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 22:00:05,986 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,SelfDestructingSolverStorable10 [2025-02-05 22:00:05,986 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 22:00:05,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 22:00:05,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1107039989, now seen corresponding path program 1 times [2025-02-05 22:00:05,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 22:00:05,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961580672] [2025-02-05 22:00:05,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 22:00:05,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 22:00:06,065 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 727 statements into 1 equivalence classes. [2025-02-05 22:00:06,396 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 727 of 727 statements. [2025-02-05 22:00:06,396 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 22:00:06,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 22:00:06,958 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 219 proven. 123 refuted. 0 times theorem prover too weak. 25878 trivial. 0 not checked. [2025-02-05 22:00:06,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 22:00:06,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961580672] [2025-02-05 22:00:06,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961580672] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 22:00:06,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287242618] [2025-02-05 22:00:06,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 22:00:06,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 22:00:06,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 22:00:06,961 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 22:00:06,963 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 22:00:07,194 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 727 statements into 1 equivalence classes. [2025-02-05 22:00:07,339 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 727 of 727 statements. [2025-02-05 22:00:07,340 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 22:00:07,340 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 22:00:07,345 INFO L256 TraceCheckSpWp]: Trace formula consists of 1618 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 22:00:07,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 22:00:07,928 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 16896 proven. 90 refuted. 0 times theorem prover too weak. 9234 trivial. 0 not checked. [2025-02-05 22:00:07,929 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 22:00:08,368 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 252 proven. 90 refuted. 0 times theorem prover too weak. 25878 trivial. 0 not checked. [2025-02-05 22:00:08,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287242618] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 22:00:08,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 22:00:08,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 13 [2025-02-05 22:00:08,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659216446] [2025-02-05 22:00:08,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 22:00:08,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-05 22:00:08,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 22:00:08,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-05 22:00:08,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2025-02-05 22:00:08,371 INFO L87 Difference]: Start difference. First operand 9895 states and 16569 transitions. Second operand has 13 states, 13 states have (on average 22.307692307692307) internal successors, (290), 13 states have internal predecessors, (290), 6 states have call successors, (237), 3 states have call predecessors, (237), 6 states have return successors, (237), 6 states have call predecessors, (237), 6 states have call successors, (237) [2025-02-05 22:00:09,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 22:00:09,652 INFO L93 Difference]: Finished difference Result 15867 states and 26336 transitions. [2025-02-05 22:00:09,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-05 22:00:09,653 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 22.307692307692307) internal successors, (290), 13 states have internal predecessors, (290), 6 states have call successors, (237), 3 states have call predecessors, (237), 6 states have return successors, (237), 6 states have call predecessors, (237), 6 states have call successors, (237) Word has length 727 [2025-02-05 22:00:09,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 22:00:09,676 INFO L225 Difference]: With dead ends: 15867 [2025-02-05 22:00:09,677 INFO L226 Difference]: Without dead ends: 6745 [2025-02-05 22:00:09,689 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1469 GetRequests, 1448 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2025-02-05 22:00:09,690 INFO L435 NwaCegarLoop]: 415 mSDtfsCounter, 1508 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 840 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 1842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 840 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-05 22:00:09,690 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1311 Invalid, 1842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [840 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-05 22:00:09,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6745 states. [2025-02-05 22:00:10,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6745 to 6641. [2025-02-05 22:00:10,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6641 states, 5683 states have (on average 1.6076016188632765) internal successors, (9136), 5693 states have internal predecessors, (9136), 849 states have call successors, (849), 108 states have call predecessors, (849), 108 states have return successors, (849), 839 states have call predecessors, (849), 849 states have call successors, (849) [2025-02-05 22:00:10,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6641 states to 6641 states and 10834 transitions. [2025-02-05 22:00:10,247 INFO L78 Accepts]: Start accepts. Automaton has 6641 states and 10834 transitions. Word has length 727 [2025-02-05 22:00:10,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 22:00:10,248 INFO L471 AbstractCegarLoop]: Abstraction has 6641 states and 10834 transitions. [2025-02-05 22:00:10,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 22.307692307692307) internal successors, (290), 13 states have internal predecessors, (290), 6 states have call successors, (237), 3 states have call predecessors, (237), 6 states have return successors, (237), 6 states have call predecessors, (237), 6 states have call successors, (237) [2025-02-05 22:00:10,249 INFO L276 IsEmpty]: Start isEmpty. Operand 6641 states and 10834 transitions. [2025-02-05 22:00:10,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2025-02-05 22:00:10,257 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 22:00:10,257 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:00:10,269 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 22:00:10,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 22:00:10,459 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 22:00:10,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 22:00:10,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1872390537, now seen corresponding path program 1 times [2025-02-05 22:00:10,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 22:00:10,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691913583] [2025-02-05 22:00:10,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 22:00:10,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 22:00:10,491 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 727 statements into 1 equivalence classes. [2025-02-05 22:00:10,734 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 727 of 727 statements. [2025-02-05 22:00:10,735 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 22:00:10,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 22:00:12,320 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 510 proven. 498 refuted. 0 times theorem prover too weak. 25212 trivial. 0 not checked. [2025-02-05 22:00:12,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 22:00:12,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691913583] [2025-02-05 22:00:12,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691913583] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 22:00:12,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874741941] [2025-02-05 22:00:12,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 22:00:12,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 22:00:12,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 22:00:12,324 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 22:00:12,325 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 22:00:12,537 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 727 statements into 1 equivalence classes. [2025-02-05 22:00:12,798 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 727 of 727 statements. [2025-02-05 22:00:12,798 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 22:00:12,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 22:00:12,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 1615 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-02-05 22:00:12,824 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 22:00:15,879 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 19330 proven. 837 refuted. 0 times theorem prover too weak. 6053 trivial. 0 not checked. [2025-02-05 22:00:15,879 INFO L312 TraceCheckSpWp]: Computing backward predicates...