./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/in-de62.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops-crafted-1/in-de62.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash de9532d8dfc4a0a0cd7c7b5fdf45ac6c04e52382fa165e3cc41d86867bc75adf --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 03:02:59,980 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 03:03:00,065 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 03:03:00,073 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 03:03:00,073 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 03:03:00,108 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 03:03:00,110 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 03:03:00,110 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 03:03:00,111 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 03:03:00,111 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 03:03:00,112 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 03:03:00,112 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 03:03:00,112 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 03:03:00,112 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 03:03:00,112 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 03:03:00,113 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 03:03:00,113 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 03:03:00,113 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 03:03:00,113 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 03:03:00,114 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 03:03:00,114 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 03:03:00,114 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 03:03:00,114 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 03:03:00,114 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 03:03:00,114 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 03:03:00,114 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 03:03:00,114 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 03:03:00,114 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 03:03:00,115 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 03:03:00,115 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 03:03:00,115 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 03:03:00,115 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 03:03:00,115 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:03:00,115 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 03:03:00,116 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 03:03:00,116 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 03:03:00,116 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 03:03:00,116 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:03:00,116 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 03:03:00,116 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 03:03:00,117 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 03:03:00,117 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 03:03:00,117 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 03:03:00,117 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 03:03:00,117 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 03:03:00,117 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 03:03:00,117 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 03:03:00,117 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 03:03:00,117 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 -> de9532d8dfc4a0a0cd7c7b5fdf45ac6c04e52382fa165e3cc41d86867bc75adf [2025-01-09 03:03:00,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 03:03:00,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 03:03:00,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 03:03:00,391 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 03:03:00,391 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 03:03:00,392 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/in-de62.c [2025-01-09 03:03:01,621 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/36c0ccdda/192926b13390442fa4422000b9d6ff79/FLAGd107e82c8 [2025-01-09 03:03:01,958 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 03:03:01,959 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/in-de62.c [2025-01-09 03:03:01,963 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/36c0ccdda/192926b13390442fa4422000b9d6ff79/FLAGd107e82c8 [2025-01-09 03:03:02,236 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/36c0ccdda/192926b13390442fa4422000b9d6ff79 [2025-01-09 03:03:02,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 03:03:02,239 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 03:03:02,240 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 03:03:02,240 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 03:03:02,243 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 03:03:02,243 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 03:03:02" (1/1) ... [2025-01-09 03:03:02,244 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49c56795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:02, skipping insertion in model container [2025-01-09 03:03:02,244 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 03:03:02" (1/1) ... [2025-01-09 03:03:02,252 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 03:03:02,328 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/loops-crafted-1/in-de62.c[368,381] [2025-01-09 03:03:02,337 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 03:03:02,343 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 03:03:02,349 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/loops-crafted-1/in-de62.c[368,381] [2025-01-09 03:03:02,352 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 03:03:02,361 INFO L204 MainTranslator]: Completed translation [2025-01-09 03:03:02,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:02 WrapperNode [2025-01-09 03:03:02,362 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 03:03:02,362 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 03:03:02,362 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 03:03:02,362 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 03:03:02,366 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:02" (1/1) ... [2025-01-09 03:03:02,370 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:02" (1/1) ... [2025-01-09 03:03:02,380 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2025-01-09 03:03:02,380 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 03:03:02,381 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 03:03:02,381 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 03:03:02,381 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 03:03:02,386 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:02" (1/1) ... [2025-01-09 03:03:02,386 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:02" (1/1) ... [2025-01-09 03:03:02,387 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:02" (1/1) ... [2025-01-09 03:03:02,393 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-09 03:03:02,393 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:02" (1/1) ... [2025-01-09 03:03:02,393 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:02" (1/1) ... [2025-01-09 03:03:02,395 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:02" (1/1) ... [2025-01-09 03:03:02,395 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:02" (1/1) ... [2025-01-09 03:03:02,397 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:02" (1/1) ... [2025-01-09 03:03:02,398 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:02" (1/1) ... [2025-01-09 03:03:02,398 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:02" (1/1) ... [2025-01-09 03:03:02,400 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 03:03:02,401 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 03:03:02,401 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 03:03:02,401 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 03:03:02,402 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:02" (1/1) ... [2025-01-09 03:03:02,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:03:02,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:02,425 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 03:03:02,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 03:03:02,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 03:03:02,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 03:03:02,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 03:03:02,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 03:03:02,492 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 03:03:02,493 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 03:03:02,596 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2025-01-09 03:03:02,596 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 03:03:02,602 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 03:03:02,603 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 03:03:02,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:03:02 BoogieIcfgContainer [2025-01-09 03:03:02,603 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 03:03:02,605 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 03:03:02,605 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 03:03:02,608 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 03:03:02,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 03:03:02" (1/3) ... [2025-01-09 03:03:02,609 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e267f0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 03:03:02, skipping insertion in model container [2025-01-09 03:03:02,609 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:02" (2/3) ... [2025-01-09 03:03:02,609 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e267f0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 03:03:02, skipping insertion in model container [2025-01-09 03:03:02,609 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:03:02" (3/3) ... [2025-01-09 03:03:02,610 INFO L128 eAbstractionObserver]: Analyzing ICFG in-de62.c [2025-01-09 03:03:02,620 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 03:03:02,621 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG in-de62.c that has 1 procedures, 15 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2025-01-09 03:03:02,664 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 03:03:02,672 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;@1dcedb8c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 03:03:02,673 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 03:03:02,677 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:02,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-09 03:03:02,683 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:02,683 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:02,684 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:02,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:02,690 INFO L85 PathProgramCache]: Analyzing trace with hash 78423159, now seen corresponding path program 1 times [2025-01-09 03:03:02,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:02,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957691356] [2025-01-09 03:03:02,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:02,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:02,776 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-09 03:03:02,800 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-09 03:03:02,801 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:02,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:02,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 03:03:03,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:03,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957691356] [2025-01-09 03:03:03,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957691356] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:03:03,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:03:03,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 03:03:03,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876497447] [2025-01-09 03:03:03,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:03:03,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 03:03:03,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:03,030 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 03:03:03,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:03:03,033 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:03,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:03,090 INFO L93 Difference]: Finished difference Result 31 states and 46 transitions. [2025-01-09 03:03:03,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 03:03:03,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-01-09 03:03:03,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:03,097 INFO L225 Difference]: With dead ends: 31 [2025-01-09 03:03:03,097 INFO L226 Difference]: Without dead ends: 16 [2025-01-09 03:03:03,099 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:03:03,101 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 1 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:03,102 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 35 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:03:03,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2025-01-09 03:03:03,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2025-01-09 03:03:03,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:03,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 24 transitions. [2025-01-09 03:03:03,139 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 24 transitions. Word has length 10 [2025-01-09 03:03:03,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:03,140 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 24 transitions. [2025-01-09 03:03:03,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:03,140 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 24 transitions. [2025-01-09 03:03:03,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-01-09 03:03:03,140 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:03,140 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:03,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 03:03:03,141 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:03,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:03,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1863911851, now seen corresponding path program 1 times [2025-01-09 03:03:03,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:03,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859732886] [2025-01-09 03:03:03,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:03,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:03,155 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-09 03:03:03,165 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-09 03:03:03,165 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:03,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:03,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 03:03:03,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:03,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859732886] [2025-01-09 03:03:03,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859732886] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:03:03,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:03:03,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 03:03:03,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892182903] [2025-01-09 03:03:03,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:03:03,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 03:03:03,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:03,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 03:03:03,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 03:03:03,216 INFO L87 Difference]: Start difference. First operand 16 states and 24 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:03,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:03,254 INFO L93 Difference]: Finished difference Result 37 states and 59 transitions. [2025-01-09 03:03:03,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 03:03:03,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-01-09 03:03:03,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:03,255 INFO L225 Difference]: With dead ends: 37 [2025-01-09 03:03:03,255 INFO L226 Difference]: Without dead ends: 25 [2025-01-09 03:03:03,256 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 [2025-01-09 03:03:03,256 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:03,256 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 19 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:03:03,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-01-09 03:03:03,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2025-01-09 03:03:03,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 24 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:03,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 38 transitions. [2025-01-09 03:03:03,275 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 38 transitions. Word has length 11 [2025-01-09 03:03:03,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:03,275 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 38 transitions. [2025-01-09 03:03:03,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:03,276 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 38 transitions. [2025-01-09 03:03:03,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-01-09 03:03:03,276 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:03,276 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:03,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 03:03:03,276 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:03,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:03,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1865878057, now seen corresponding path program 1 times [2025-01-09 03:03:03,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:03,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691424492] [2025-01-09 03:03:03,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:03,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:03,285 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-09 03:03:03,288 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-09 03:03:03,288 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:03,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:03,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 03:03:03,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:03,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691424492] [2025-01-09 03:03:03,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691424492] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:03:03,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:03:03,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 03:03:03,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180540334] [2025-01-09 03:03:03,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:03:03,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 03:03:03,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:03,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 03:03:03,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 03:03:03,338 INFO L87 Difference]: Start difference. First operand 25 states and 38 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:03,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:03,371 INFO L93 Difference]: Finished difference Result 39 states and 59 transitions. [2025-01-09 03:03:03,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 03:03:03,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-01-09 03:03:03,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:03,373 INFO L225 Difference]: With dead ends: 39 [2025-01-09 03:03:03,373 INFO L226 Difference]: Without dead ends: 29 [2025-01-09 03:03:03,373 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 [2025-01-09 03:03:03,374 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 1 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:03,375 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 23 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:03:03,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-01-09 03:03:03,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2025-01-09 03:03:03,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 28 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:03,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2025-01-09 03:03:03,386 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 11 [2025-01-09 03:03:03,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:03,387 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2025-01-09 03:03:03,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:03,387 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2025-01-09 03:03:03,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-01-09 03:03:03,387 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:03,387 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:03,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 03:03:03,388 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:03,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:03,388 INFO L85 PathProgramCache]: Analyzing trace with hash -896759401, now seen corresponding path program 1 times [2025-01-09 03:03:03,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:03,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409605162] [2025-01-09 03:03:03,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:03,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:03,393 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-09 03:03:03,399 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-09 03:03:03,400 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:03,400 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:03,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:03:03,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:03,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409605162] [2025-01-09 03:03:03,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409605162] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:03,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209578898] [2025-01-09 03:03:03,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:03,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:03,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:03,488 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:03,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 03:03:03,515 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-09 03:03:03,523 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-09 03:03:03,523 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:03,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:03,524 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 03:03:03,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:03,550 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:03:03,550 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:03,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:03:03,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209578898] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:03,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-09 03:03:03,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 8 [2025-01-09 03:03:03,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944456818] [2025-01-09 03:03:03,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:03:03,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 03:03:03,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:03,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 03:03:03,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-01-09 03:03:03,582 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:03,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:03,607 INFO L93 Difference]: Finished difference Result 35 states and 49 transitions. [2025-01-09 03:03:03,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 03:03:03,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-01-09 03:03:03,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:03,608 INFO L225 Difference]: With dead ends: 35 [2025-01-09 03:03:03,608 INFO L226 Difference]: Without dead ends: 26 [2025-01-09 03:03:03,608 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-01-09 03:03:03,609 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:03,609 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:03:03,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2025-01-09 03:03:03,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2025-01-09 03:03:03,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.52) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:03,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 38 transitions. [2025-01-09 03:03:03,613 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 38 transitions. Word has length 13 [2025-01-09 03:03:03,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:03,613 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 38 transitions. [2025-01-09 03:03:03,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:03,613 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 38 transitions. [2025-01-09 03:03:03,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-01-09 03:03:03,614 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:03,614 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:03,624 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 03:03:03,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:03,815 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:03,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:03,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1760885461, now seen corresponding path program 1 times [2025-01-09 03:03:03,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:03,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938827530] [2025-01-09 03:03:03,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:03,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:03,820 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-09 03:03:03,832 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-09 03:03:03,832 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:03,832 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:03,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:03:03,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:03,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938827530] [2025-01-09 03:03:03,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938827530] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:03:03,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:03:03,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 03:03:03,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861061418] [2025-01-09 03:03:03,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:03:03,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 03:03:03,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:03,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 03:03:03,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:03:03,894 INFO L87 Difference]: Start difference. First operand 26 states and 38 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:03,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:03,938 INFO L93 Difference]: Finished difference Result 34 states and 47 transitions. [2025-01-09 03:03:03,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 03:03:03,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-01-09 03:03:03,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:03,939 INFO L225 Difference]: With dead ends: 34 [2025-01-09 03:03:03,939 INFO L226 Difference]: Without dead ends: 23 [2025-01-09 03:03:03,939 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 03:03:03,940 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 30 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 [2025-01-09 03:03:03,940 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 30 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:03:03,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-01-09 03:03:03,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2025-01-09 03:03:03,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:03,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 33 transitions. [2025-01-09 03:03:03,949 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 33 transitions. Word has length 13 [2025-01-09 03:03:03,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:03,949 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 33 transitions. [2025-01-09 03:03:03,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:03,950 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 33 transitions. [2025-01-09 03:03:03,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-01-09 03:03:03,950 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:03,950 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:03,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 03:03:03,950 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:03,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:03,955 INFO L85 PathProgramCache]: Analyzing trace with hash 960886453, now seen corresponding path program 1 times [2025-01-09 03:03:03,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:03,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599772556] [2025-01-09 03:03:03,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:03,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:03,964 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-09 03:03:03,974 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 03:03:03,974 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:03,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:04,075 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:03:04,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:04,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599772556] [2025-01-09 03:03:04,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599772556] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:04,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992652443] [2025-01-09 03:03:04,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:04,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:04,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:04,078 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:04,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 03:03:04,117 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-09 03:03:04,125 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 03:03:04,125 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:04,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:04,125 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 03:03:04,128 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:04,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 03:03:04,163 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:04,193 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 03:03:04,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992652443] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:04,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:04,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2025-01-09 03:03:04,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988539103] [2025-01-09 03:03:04,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:04,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 03:03:04,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:04,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 03:03:04,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-01-09 03:03:04,196 INFO L87 Difference]: Start difference. First operand 23 states and 33 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:04,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:04,306 INFO L93 Difference]: Finished difference Result 67 states and 107 transitions. [2025-01-09 03:03:04,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 03:03:04,308 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-01-09 03:03:04,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:04,310 INFO L225 Difference]: With dead ends: 67 [2025-01-09 03:03:04,311 INFO L226 Difference]: Without dead ends: 54 [2025-01-09 03:03:04,311 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-01-09 03:03:04,312 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:04,312 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 39 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:03:04,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2025-01-09 03:03:04,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2025-01-09 03:03:04,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.5294117647058822) internal successors, (52), 34 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:04,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 52 transitions. [2025-01-09 03:03:04,328 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 52 transitions. Word has length 14 [2025-01-09 03:03:04,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:04,328 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 52 transitions. [2025-01-09 03:03:04,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:04,329 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 52 transitions. [2025-01-09 03:03:04,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-01-09 03:03:04,329 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:04,329 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:04,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-09 03:03:04,530 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 [2025-01-09 03:03:04,532 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:04,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:04,533 INFO L85 PathProgramCache]: Analyzing trace with hash -591446539, now seen corresponding path program 1 times [2025-01-09 03:03:04,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:04,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922565760] [2025-01-09 03:03:04,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:04,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:04,545 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-09 03:03:04,559 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 03:03:04,559 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:04,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:04,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 03:03:04,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:04,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922565760] [2025-01-09 03:03:04,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922565760] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:04,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303449038] [2025-01-09 03:03:04,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:04,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:04,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:04,659 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:04,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 03:03:04,682 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-09 03:03:04,689 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 03:03:04,689 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:04,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:04,690 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 03:03:04,690 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:04,747 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 03:03:04,747 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:04,788 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 03:03:04,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303449038] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:04,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:04,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 5] total 10 [2025-01-09 03:03:04,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606333974] [2025-01-09 03:03:04,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:04,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 03:03:04,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:04,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 03:03:04,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2025-01-09 03:03:04,790 INFO L87 Difference]: Start difference. First operand 35 states and 52 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:04,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:04,924 INFO L93 Difference]: Finished difference Result 131 states and 221 transitions. [2025-01-09 03:03:04,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 03:03:04,924 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-01-09 03:03:04,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:04,925 INFO L225 Difference]: With dead ends: 131 [2025-01-09 03:03:04,925 INFO L226 Difference]: Without dead ends: 108 [2025-01-09 03:03:04,925 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2025-01-09 03:03:04,926 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 32 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:04,926 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 66 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:03:04,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2025-01-09 03:03:04,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 78. [2025-01-09 03:03:04,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.5324675324675325) internal successors, (118), 77 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:04,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 118 transitions. [2025-01-09 03:03:04,942 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 118 transitions. Word has length 14 [2025-01-09 03:03:04,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:04,942 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 118 transitions. [2025-01-09 03:03:04,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:04,942 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 118 transitions. [2025-01-09 03:03:04,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-01-09 03:03:04,943 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:04,943 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:04,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 03:03:05,147 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 [2025-01-09 03:03:05,147 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:05,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:05,147 INFO L85 PathProgramCache]: Analyzing trace with hash 2128089817, now seen corresponding path program 1 times [2025-01-09 03:03:05,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:05,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582527699] [2025-01-09 03:03:05,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:05,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:05,151 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-09 03:03:05,155 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 03:03:05,155 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:05,155 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:05,243 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:03:05,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:05,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582527699] [2025-01-09 03:03:05,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582527699] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:05,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138823248] [2025-01-09 03:03:05,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:05,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:05,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:05,247 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:05,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 03:03:05,278 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-09 03:03:05,289 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 03:03:05,289 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:05,289 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:05,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-09 03:03:05,291 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:05,310 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:03:05,312 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:05,382 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:03:05,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138823248] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:05,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:05,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 11 [2025-01-09 03:03:05,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080044640] [2025-01-09 03:03:05,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:05,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 03:03:05,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:05,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 03:03:05,383 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-01-09 03:03:05,383 INFO L87 Difference]: Start difference. First operand 78 states and 118 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:05,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:05,718 INFO L93 Difference]: Finished difference Result 150 states and 227 transitions. [2025-01-09 03:03:05,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-09 03:03:05,718 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-01-09 03:03:05,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:05,719 INFO L225 Difference]: With dead ends: 150 [2025-01-09 03:03:05,720 INFO L226 Difference]: Without dead ends: 117 [2025-01-09 03:03:05,720 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2025-01-09 03:03:05,722 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 32 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:05,723 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 46 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:03:05,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2025-01-09 03:03:05,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 97. [2025-01-09 03:03:05,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.46875) internal successors, (141), 96 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:05,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 141 transitions. [2025-01-09 03:03:05,749 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 141 transitions. Word has length 15 [2025-01-09 03:03:05,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:05,750 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 141 transitions. [2025-01-09 03:03:05,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:05,750 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 141 transitions. [2025-01-09 03:03:05,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-01-09 03:03:05,750 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:05,750 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:05,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-09 03:03:05,955 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 [2025-01-09 03:03:05,955 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:05,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:05,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1485260017, now seen corresponding path program 1 times [2025-01-09 03:03:05,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:05,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270267199] [2025-01-09 03:03:05,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:05,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:05,959 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-09 03:03:05,965 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-09 03:03:05,965 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:05,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:06,070 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:03:06,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:06,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270267199] [2025-01-09 03:03:06,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270267199] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:06,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892296466] [2025-01-09 03:03:06,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:06,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:06,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:06,078 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:06,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 03:03:06,112 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-09 03:03:06,132 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-09 03:03:06,132 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:06,132 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:06,137 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 03:03:06,139 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:06,189 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:03:06,189 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:06,220 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:03:06,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892296466] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:06,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:06,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2025-01-09 03:03:06,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413325457] [2025-01-09 03:03:06,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:06,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 03:03:06,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:06,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 03:03:06,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-09 03:03:06,222 INFO L87 Difference]: Start difference. First operand 97 states and 141 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:06,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:06,286 INFO L93 Difference]: Finished difference Result 124 states and 181 transitions. [2025-01-09 03:03:06,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:03:06,286 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-01-09 03:03:06,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:06,287 INFO L225 Difference]: With dead ends: 124 [2025-01-09 03:03:06,287 INFO L226 Difference]: Without dead ends: 111 [2025-01-09 03:03:06,288 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 5 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-09 03:03:06,288 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:06,288 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 45 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:03:06,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2025-01-09 03:03:06,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 94. [2025-01-09 03:03:06,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.5161290322580645) internal successors, (141), 93 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:06,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 141 transitions. [2025-01-09 03:03:06,332 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 141 transitions. Word has length 16 [2025-01-09 03:03:06,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:06,332 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 141 transitions. [2025-01-09 03:03:06,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:06,333 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 141 transitions. [2025-01-09 03:03:06,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-01-09 03:03:06,333 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:06,333 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:06,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-09 03:03:06,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:06,534 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:06,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:06,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1101839531, now seen corresponding path program 2 times [2025-01-09 03:03:06,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:06,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482536597] [2025-01-09 03:03:06,535 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:03:06,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:06,540 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-01-09 03:03:06,554 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-01-09 03:03:06,559 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:03:06,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:06,668 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-09 03:03:06,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:06,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482536597] [2025-01-09 03:03:06,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482536597] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:06,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74458013] [2025-01-09 03:03:06,669 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:03:06,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:06,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:06,671 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:06,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-09 03:03:06,700 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-01-09 03:03:06,713 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-01-09 03:03:06,713 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:03:06,713 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:06,714 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 03:03:06,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:06,738 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-09 03:03:06,739 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:06,810 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-09 03:03:06,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74458013] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:06,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:06,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 12 [2025-01-09 03:03:06,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583980720] [2025-01-09 03:03:06,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:06,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-09 03:03:06,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:06,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-09 03:03:06,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2025-01-09 03:03:06,816 INFO L87 Difference]: Start difference. First operand 94 states and 141 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:06,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:06,996 INFO L93 Difference]: Finished difference Result 133 states and 200 transitions. [2025-01-09 03:03:06,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 03:03:06,997 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-01-09 03:03:06,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:06,998 INFO L225 Difference]: With dead ends: 133 [2025-01-09 03:03:06,998 INFO L226 Difference]: Without dead ends: 89 [2025-01-09 03:03:06,998 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2025-01-09 03:03:06,999 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 33 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:07,000 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 74 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:03:07,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2025-01-09 03:03:07,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 81. [2025-01-09 03:03:07,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.5) internal successors, (120), 80 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:07,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 120 transitions. [2025-01-09 03:03:07,025 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 120 transitions. Word has length 17 [2025-01-09 03:03:07,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:07,026 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 120 transitions. [2025-01-09 03:03:07,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:07,026 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 120 transitions. [2025-01-09 03:03:07,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-01-09 03:03:07,028 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:07,028 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:07,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-09 03:03:07,232 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,SelfDestructingSolverStorable9 [2025-01-09 03:03:07,232 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:07,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:07,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1825481655, now seen corresponding path program 3 times [2025-01-09 03:03:07,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:07,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156207422] [2025-01-09 03:03:07,233 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:03:07,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:07,241 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-01-09 03:03:07,250 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 03:03:07,251 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 03:03:07,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:07,381 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:03:07,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:07,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156207422] [2025-01-09 03:03:07,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156207422] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:07,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355398732] [2025-01-09 03:03:07,381 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:03:07,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:07,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:07,385 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:07,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-09 03:03:07,415 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-01-09 03:03:07,427 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 03:03:07,427 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 03:03:07,427 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:07,428 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-01-09 03:03:07,429 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:07,508 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:03:07,508 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:07,606 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:03:07,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355398732] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:07,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:07,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 14 [2025-01-09 03:03:07,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601093442] [2025-01-09 03:03:07,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:07,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 03:03:07,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:07,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 03:03:07,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2025-01-09 03:03:07,608 INFO L87 Difference]: Start difference. First operand 81 states and 120 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:07,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:07,988 INFO L93 Difference]: Finished difference Result 138 states and 205 transitions. [2025-01-09 03:03:07,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-09 03:03:07,988 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-01-09 03:03:07,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:07,989 INFO L225 Difference]: With dead ends: 138 [2025-01-09 03:03:07,989 INFO L226 Difference]: Without dead ends: 98 [2025-01-09 03:03:07,990 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 27 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2025-01-09 03:03:07,990 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 18 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:07,991 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 91 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:03:07,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2025-01-09 03:03:08,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 85. [2025-01-09 03:03:08,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.4166666666666667) internal successors, (119), 84 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:08,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 119 transitions. [2025-01-09 03:03:08,019 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 119 transitions. Word has length 18 [2025-01-09 03:03:08,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:08,019 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 119 transitions. [2025-01-09 03:03:08,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:08,020 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 119 transitions. [2025-01-09 03:03:08,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-01-09 03:03:08,020 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:08,020 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:08,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-09 03:03:08,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:08,221 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:08,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:08,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1041610377, now seen corresponding path program 2 times [2025-01-09 03:03:08,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:08,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274528989] [2025-01-09 03:03:08,222 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:03:08,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:08,226 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-01-09 03:03:08,235 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-01-09 03:03:08,235 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:03:08,235 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:08,462 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-01-09 03:03:08,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:08,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274528989] [2025-01-09 03:03:08,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274528989] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:08,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146084325] [2025-01-09 03:03:08,467 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:03:08,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:08,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:08,469 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:08,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-09 03:03:08,496 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-01-09 03:03:08,506 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-01-09 03:03:08,506 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:03:08,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:08,507 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-01-09 03:03:08,508 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:08,588 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:03:08,589 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:08,776 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-09 03:03:08,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146084325] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:08,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:08,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 16 [2025-01-09 03:03:08,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705104043] [2025-01-09 03:03:08,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:08,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-09 03:03:08,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:08,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-09 03:03:08,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2025-01-09 03:03:08,778 INFO L87 Difference]: Start difference. First operand 85 states and 119 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:09,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:09,311 INFO L93 Difference]: Finished difference Result 239 states and 372 transitions. [2025-01-09 03:03:09,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-09 03:03:09,311 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-01-09 03:03:09,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:09,314 INFO L225 Difference]: With dead ends: 239 [2025-01-09 03:03:09,314 INFO L226 Difference]: Without dead ends: 193 [2025-01-09 03:03:09,314 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=353, Unknown=0, NotChecked=0, Total=506 [2025-01-09 03:03:09,315 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 47 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:09,316 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 101 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 03:03:09,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2025-01-09 03:03:09,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 129. [2025-01-09 03:03:09,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.453125) internal successors, (186), 128 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:09,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 186 transitions. [2025-01-09 03:03:09,365 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 186 transitions. Word has length 20 [2025-01-09 03:03:09,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:09,365 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 186 transitions. [2025-01-09 03:03:09,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:09,365 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 186 transitions. [2025-01-09 03:03:09,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-01-09 03:03:09,366 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:09,366 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:09,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-09 03:03:09,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:09,567 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:09,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:09,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1732563223, now seen corresponding path program 3 times [2025-01-09 03:03:09,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:09,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184170568] [2025-01-09 03:03:09,567 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:03:09,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:09,573 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-01-09 03:03:09,598 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-01-09 03:03:09,598 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-09 03:03:09,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:09,771 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-09 03:03:09,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:09,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184170568] [2025-01-09 03:03:09,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184170568] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:09,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243542055] [2025-01-09 03:03:09,772 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:03:09,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:09,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:09,774 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:09,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-09 03:03:09,807 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-01-09 03:03:09,817 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-01-09 03:03:09,817 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-09 03:03:09,817 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:09,818 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-01-09 03:03:09,819 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:10,012 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 03:03:10,012 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:10,080 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-01-09 03:03:10,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243542055] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:10,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:10,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 6] total 20 [2025-01-09 03:03:10,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548609752] [2025-01-09 03:03:10,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:10,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-09 03:03:10,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:10,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-09 03:03:10,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2025-01-09 03:03:10,082 INFO L87 Difference]: Start difference. First operand 129 states and 186 transitions. Second operand has 20 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:10,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:10,697 INFO L93 Difference]: Finished difference Result 283 states and 443 transitions. [2025-01-09 03:03:10,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-01-09 03:03:10,698 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-01-09 03:03:10,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:10,699 INFO L225 Difference]: With dead ends: 283 [2025-01-09 03:03:10,699 INFO L226 Difference]: Without dead ends: 217 [2025-01-09 03:03:10,699 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=320, Invalid=1162, Unknown=0, NotChecked=0, Total=1482 [2025-01-09 03:03:10,700 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 89 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:10,700 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 127 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 03:03:10,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2025-01-09 03:03:10,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 174. [2025-01-09 03:03:10,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.3872832369942196) internal successors, (240), 173 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:10,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 240 transitions. [2025-01-09 03:03:10,727 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 240 transitions. Word has length 21 [2025-01-09 03:03:10,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:10,727 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 240 transitions. [2025-01-09 03:03:10,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:10,727 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 240 transitions. [2025-01-09 03:03:10,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-01-09 03:03:10,728 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:10,728 INFO L218 NwaCegarLoop]: trace histogram [6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:10,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-09 03:03:10,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:10,932 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:10,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:10,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1213647927, now seen corresponding path program 4 times [2025-01-09 03:03:10,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:10,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105288775] [2025-01-09 03:03:10,936 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:03:10,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:10,942 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-01-09 03:03:10,949 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 03:03:10,950 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:03:10,950 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:11,143 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:03:11,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:11,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105288775] [2025-01-09 03:03:11,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105288775] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:11,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308071930] [2025-01-09 03:03:11,144 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:03:11,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:11,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:11,146 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:11,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-09 03:03:11,173 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-01-09 03:03:11,188 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 03:03:11,188 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:03:11,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:11,190 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-01-09 03:03:11,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:11,234 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:03:11,234 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:11,323 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-01-09 03:03:11,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308071930] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:11,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:11,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 6] total 20 [2025-01-09 03:03:11,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535578222] [2025-01-09 03:03:11,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:11,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-09 03:03:11,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:11,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-09 03:03:11,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2025-01-09 03:03:11,325 INFO L87 Difference]: Start difference. First operand 174 states and 240 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:11,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:11,987 INFO L93 Difference]: Finished difference Result 395 states and 576 transitions. [2025-01-09 03:03:11,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-01-09 03:03:11,988 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2025-01-09 03:03:11,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:11,990 INFO L225 Difference]: With dead ends: 395 [2025-01-09 03:03:11,990 INFO L226 Difference]: Without dead ends: 289 [2025-01-09 03:03:11,991 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=220, Invalid=836, Unknown=0, NotChecked=0, Total=1056 [2025-01-09 03:03:11,991 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 73 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:11,996 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 242 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 03:03:11,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2025-01-09 03:03:12,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 226. [2025-01-09 03:03:12,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 1.36) internal successors, (306), 225 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:12,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 306 transitions. [2025-01-09 03:03:12,099 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 306 transitions. Word has length 22 [2025-01-09 03:03:12,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:12,099 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 306 transitions. [2025-01-09 03:03:12,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:12,099 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 306 transitions. [2025-01-09 03:03:12,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-01-09 03:03:12,100 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:12,100 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:12,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-01-09 03:03:12,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-01-09 03:03:12,305 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:12,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:12,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1890998263, now seen corresponding path program 5 times [2025-01-09 03:03:12,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:12,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982416313] [2025-01-09 03:03:12,307 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:03:12,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:12,310 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 24 statements into 3 equivalence classes. [2025-01-09 03:03:12,322 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 03:03:12,322 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-01-09 03:03:12,322 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:12,667 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-09 03:03:12,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:12,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982416313] [2025-01-09 03:03:12,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982416313] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:12,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119666029] [2025-01-09 03:03:12,668 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:03:12,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:12,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:12,670 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:12,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-09 03:03:12,701 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 24 statements into 3 equivalence classes. [2025-01-09 03:03:12,731 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 03:03:12,731 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-01-09 03:03:12,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:12,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-01-09 03:03:12,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:12,924 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 03:03:12,924 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:13,026 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-01-09 03:03:13,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119666029] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:13,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:13,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 7] total 25 [2025-01-09 03:03:13,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277829281] [2025-01-09 03:03:13,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:13,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-01-09 03:03:13,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:13,028 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-01-09 03:03:13,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2025-01-09 03:03:13,029 INFO L87 Difference]: Start difference. First operand 226 states and 306 transitions. Second operand has 25 states, 25 states have (on average 2.12) internal successors, (53), 25 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:17,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-09 03:03:17,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:17,938 INFO L93 Difference]: Finished difference Result 456 states and 643 transitions. [2025-01-09 03:03:17,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2025-01-09 03:03:17,940 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.12) internal successors, (53), 25 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2025-01-09 03:03:17,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:17,942 INFO L225 Difference]: With dead ends: 456 [2025-01-09 03:03:17,942 INFO L226 Difference]: Without dead ends: 383 [2025-01-09 03:03:17,943 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=648, Invalid=2432, Unknown=0, NotChecked=0, Total=3080 [2025-01-09 03:03:17,944 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 128 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 83 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:17,944 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 152 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 680 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2025-01-09 03:03:17,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2025-01-09 03:03:18,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 261. [2025-01-09 03:03:18,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.3423076923076922) internal successors, (349), 260 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:18,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 349 transitions. [2025-01-09 03:03:18,013 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 349 transitions. Word has length 24 [2025-01-09 03:03:18,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:18,013 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 349 transitions. [2025-01-09 03:03:18,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.12) internal successors, (53), 25 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:18,014 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 349 transitions. [2025-01-09 03:03:18,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-01-09 03:03:18,014 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:18,014 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:18,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-01-09 03:03:18,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-01-09 03:03:18,216 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:18,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:18,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1064337073, now seen corresponding path program 2 times [2025-01-09 03:03:18,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:18,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524887623] [2025-01-09 03:03:18,217 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:03:18,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:18,222 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-01-09 03:03:18,252 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 03:03:18,252 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:03:18,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:18,439 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-01-09 03:03:18,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:18,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524887623] [2025-01-09 03:03:18,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524887623] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:18,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373560908] [2025-01-09 03:03:18,440 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:03:18,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:18,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:18,442 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:18,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-09 03:03:18,471 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-01-09 03:03:18,483 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 03:03:18,483 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:03:18,484 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:18,484 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-01-09 03:03:18,485 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:18,548 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-01-09 03:03:18,549 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:18,624 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-01-09 03:03:18,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373560908] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:18,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:18,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 11 [2025-01-09 03:03:18,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812532353] [2025-01-09 03:03:18,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:18,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 03:03:18,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:18,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 03:03:18,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2025-01-09 03:03:18,625 INFO L87 Difference]: Start difference. First operand 261 states and 349 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:19,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:19,158 INFO L93 Difference]: Finished difference Result 653 states and 916 transitions. [2025-01-09 03:03:19,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-09 03:03:19,159 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2025-01-09 03:03:19,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:19,161 INFO L225 Difference]: With dead ends: 653 [2025-01-09 03:03:19,161 INFO L226 Difference]: Without dead ends: 569 [2025-01-09 03:03:19,161 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 39 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2025-01-09 03:03:19,162 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 54 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:19,162 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 75 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 03:03:19,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2025-01-09 03:03:19,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 315. [2025-01-09 03:03:19,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 1.3439490445859872) internal successors, (422), 314 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:19,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 422 transitions. [2025-01-09 03:03:19,310 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 422 transitions. Word has length 24 [2025-01-09 03:03:19,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:19,311 INFO L471 AbstractCegarLoop]: Abstraction has 315 states and 422 transitions. [2025-01-09 03:03:19,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:19,311 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 422 transitions. [2025-01-09 03:03:19,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-01-09 03:03:19,312 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:19,312 INFO L218 NwaCegarLoop]: trace histogram [7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:19,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-01-09 03:03:19,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:19,513 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:19,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:19,513 INFO L85 PathProgramCache]: Analyzing trace with hash 494182615, now seen corresponding path program 1 times [2025-01-09 03:03:19,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:19,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422824337] [2025-01-09 03:03:19,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:19,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:19,519 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-09 03:03:19,527 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-09 03:03:19,528 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:19,528 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:19,678 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-01-09 03:03:19,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:19,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422824337] [2025-01-09 03:03:19,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422824337] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:19,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90965274] [2025-01-09 03:03:19,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:19,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:19,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:19,685 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:19,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-09 03:03:19,723 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-09 03:03:19,743 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-09 03:03:19,743 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:19,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:19,746 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-01-09 03:03:19,747 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:19,777 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:03:19,778 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:19,843 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-01-09 03:03:19,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90965274] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:19,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:19,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 5] total 16 [2025-01-09 03:03:19,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783394213] [2025-01-09 03:03:19,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:19,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-09 03:03:19,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:19,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-09 03:03:19,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2025-01-09 03:03:19,846 INFO L87 Difference]: Start difference. First operand 315 states and 422 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:20,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:20,432 INFO L93 Difference]: Finished difference Result 662 states and 941 transitions. [2025-01-09 03:03:20,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-09 03:03:20,433 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-01-09 03:03:20,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:20,436 INFO L225 Difference]: With dead ends: 662 [2025-01-09 03:03:20,436 INFO L226 Difference]: Without dead ends: 555 [2025-01-09 03:03:20,437 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2025-01-09 03:03:20,437 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 100 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:20,437 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 290 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 03:03:20,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2025-01-09 03:03:20,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 420. [2025-01-09 03:03:20,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 419 states have (on average 1.3460620525059666) internal successors, (564), 419 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:20,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 564 transitions. [2025-01-09 03:03:20,565 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 564 transitions. Word has length 25 [2025-01-09 03:03:20,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:20,566 INFO L471 AbstractCegarLoop]: Abstraction has 420 states and 564 transitions. [2025-01-09 03:03:20,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:20,566 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 564 transitions. [2025-01-09 03:03:20,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-01-09 03:03:20,567 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:20,567 INFO L218 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:20,573 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-01-09 03:03:20,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-09 03:03:20,768 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:20,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:20,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1561482965, now seen corresponding path program 3 times [2025-01-09 03:03:20,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:20,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224922180] [2025-01-09 03:03:20,768 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:03:20,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:20,772 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 5 equivalence classes. [2025-01-09 03:03:20,779 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 27 statements. [2025-01-09 03:03:20,779 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 03:03:20,779 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:20,840 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 03:03:20,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:20,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224922180] [2025-01-09 03:03:20,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224922180] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:20,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709720173] [2025-01-09 03:03:20,841 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:03:20,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:20,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:20,846 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:20,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-09 03:03:20,882 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 5 equivalence classes. [2025-01-09 03:03:20,897 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 27 statements. [2025-01-09 03:03:20,897 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 03:03:20,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:20,898 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 03:03:20,899 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:20,943 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2025-01-09 03:03:20,943 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:21,006 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2025-01-09 03:03:21,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709720173] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:21,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:21,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2025-01-09 03:03:21,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206745835] [2025-01-09 03:03:21,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:21,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 03:03:21,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:21,007 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 03:03:21,007 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-01-09 03:03:21,007 INFO L87 Difference]: Start difference. First operand 420 states and 564 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:21,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:21,291 INFO L93 Difference]: Finished difference Result 536 states and 731 transitions. [2025-01-09 03:03:21,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 03:03:21,291 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2025-01-09 03:03:21,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:21,294 INFO L225 Difference]: With dead ends: 536 [2025-01-09 03:03:21,294 INFO L226 Difference]: Without dead ends: 523 [2025-01-09 03:03:21,295 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 51 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2025-01-09 03:03:21,295 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 33 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:21,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 80 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:03:21,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2025-01-09 03:03:21,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 453. [2025-01-09 03:03:21,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 452 states have (on average 1.3783185840707965) internal successors, (623), 452 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:21,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 623 transitions. [2025-01-09 03:03:21,482 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 623 transitions. Word has length 27 [2025-01-09 03:03:21,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:21,482 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 623 transitions. [2025-01-09 03:03:21,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:21,483 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 623 transitions. [2025-01-09 03:03:21,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-01-09 03:03:21,484 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:21,484 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:21,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-01-09 03:03:21,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-01-09 03:03:21,688 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:21,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:21,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1007826767, now seen corresponding path program 4 times [2025-01-09 03:03:21,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:21,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541540360] [2025-01-09 03:03:21,689 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:03:21,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:21,692 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-01-09 03:03:21,702 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-01-09 03:03:21,702 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:03:21,702 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:21,861 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-09 03:03:21,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:21,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541540360] [2025-01-09 03:03:21,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541540360] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:21,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593288468] [2025-01-09 03:03:21,862 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:03:21,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:21,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:21,865 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:21,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-09 03:03:21,893 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-01-09 03:03:21,911 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-01-09 03:03:21,912 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:03:21,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:21,913 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 03:03:21,915 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:21,969 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-01-09 03:03:21,970 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:22,048 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-01-09 03:03:22,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593288468] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:22,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:22,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2025-01-09 03:03:22,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908256969] [2025-01-09 03:03:22,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:22,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 03:03:22,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:22,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 03:03:22,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-09 03:03:22,050 INFO L87 Difference]: Start difference. First operand 453 states and 623 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:22,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:22,389 INFO L93 Difference]: Finished difference Result 562 states and 757 transitions. [2025-01-09 03:03:22,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 03:03:22,390 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2025-01-09 03:03:22,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:22,395 INFO L225 Difference]: With dead ends: 562 [2025-01-09 03:03:22,395 INFO L226 Difference]: Without dead ends: 539 [2025-01-09 03:03:22,396 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 9 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-09 03:03:22,397 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:22,397 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 77 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:03:22,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2025-01-09 03:03:22,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 469. [2025-01-09 03:03:22,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 468 states have (on average 1.3782051282051282) internal successors, (645), 468 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:22,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 645 transitions. [2025-01-09 03:03:22,530 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 645 transitions. Word has length 28 [2025-01-09 03:03:22,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:22,530 INFO L471 AbstractCegarLoop]: Abstraction has 469 states and 645 transitions. [2025-01-09 03:03:22,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:22,530 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 645 transitions. [2025-01-09 03:03:22,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-01-09 03:03:22,531 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:22,531 INFO L218 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:22,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-01-09 03:03:22,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:22,732 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:22,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:22,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1220674679, now seen corresponding path program 5 times [2025-01-09 03:03:22,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:22,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164060972] [2025-01-09 03:03:22,732 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:03:22,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:22,736 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 30 statements into 5 equivalence classes. [2025-01-09 03:03:22,763 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 30 of 30 statements. [2025-01-09 03:03:22,763 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-01-09 03:03:22,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:22,986 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-09 03:03:22,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:22,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164060972] [2025-01-09 03:03:22,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164060972] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:22,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196394960] [2025-01-09 03:03:22,986 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:03:22,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:22,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:22,994 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:22,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-09 03:03:23,023 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 30 statements into 5 equivalence classes. [2025-01-09 03:03:23,094 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 30 of 30 statements. [2025-01-09 03:03:23,094 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-01-09 03:03:23,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:23,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-01-09 03:03:23,096 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:23,156 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-01-09 03:03:23,157 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:23,273 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-01-09 03:03:23,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196394960] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:23,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:23,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 8] total 21 [2025-01-09 03:03:23,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730360264] [2025-01-09 03:03:23,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:23,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-09 03:03:23,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:23,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-09 03:03:23,274 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2025-01-09 03:03:23,274 INFO L87 Difference]: Start difference. First operand 469 states and 645 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 21 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:24,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:24,411 INFO L93 Difference]: Finished difference Result 877 states and 1264 transitions. [2025-01-09 03:03:24,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2025-01-09 03:03:24,411 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 21 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2025-01-09 03:03:24,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:24,414 INFO L225 Difference]: With dead ends: 877 [2025-01-09 03:03:24,414 INFO L226 Difference]: Without dead ends: 654 [2025-01-09 03:03:24,415 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=335, Invalid=2215, Unknown=0, NotChecked=0, Total=2550 [2025-01-09 03:03:24,415 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 92 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:24,415 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 378 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 03:03:24,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2025-01-09 03:03:24,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 505. [2025-01-09 03:03:24,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 504 states have (on average 1.378968253968254) internal successors, (695), 504 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:24,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 695 transitions. [2025-01-09 03:03:24,536 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 695 transitions. Word has length 30 [2025-01-09 03:03:24,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:24,536 INFO L471 AbstractCegarLoop]: Abstraction has 505 states and 695 transitions. [2025-01-09 03:03:24,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 21 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:24,536 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 695 transitions. [2025-01-09 03:03:24,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-01-09 03:03:24,537 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:24,537 INFO L218 NwaCegarLoop]: trace histogram [7, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:24,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-01-09 03:03:24,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:24,737 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:24,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:24,738 INFO L85 PathProgramCache]: Analyzing trace with hash 57628917, now seen corresponding path program 6 times [2025-01-09 03:03:24,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:24,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105093744] [2025-01-09 03:03:24,738 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:03:24,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:24,742 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 30 statements into 5 equivalence classes. [2025-01-09 03:03:24,759 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 30 of 30 statements. [2025-01-09 03:03:24,759 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-01-09 03:03:24,759 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:24,899 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2025-01-09 03:03:24,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:24,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105093744] [2025-01-09 03:03:24,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105093744] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:24,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629307035] [2025-01-09 03:03:24,900 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:03:24,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:24,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:24,905 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:24,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-01-09 03:03:24,941 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 30 statements into 5 equivalence classes. [2025-01-09 03:03:24,970 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 30 of 30 statements. [2025-01-09 03:03:24,970 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-01-09 03:03:24,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:24,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-01-09 03:03:24,973 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:25,164 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-09 03:03:25,164 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:25,326 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-01-09 03:03:25,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629307035] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:25,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:25,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 8] total 27 [2025-01-09 03:03:25,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233125764] [2025-01-09 03:03:25,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:25,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-01-09 03:03:25,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:25,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-01-09 03:03:25,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2025-01-09 03:03:25,328 INFO L87 Difference]: Start difference. First operand 505 states and 695 transitions. Second operand has 27 states, 27 states have (on average 2.0) internal successors, (54), 27 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:30,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-09 03:03:35,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-09 03:03:39,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-09 03:03:43,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-09 03:03:47,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-09 03:03:51,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-09 03:03:51,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:51,945 INFO L93 Difference]: Finished difference Result 915 states and 1321 transitions. [2025-01-09 03:03:51,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2025-01-09 03:03:51,946 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.0) internal successors, (54), 27 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2025-01-09 03:03:51,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:51,949 INFO L225 Difference]: With dead ends: 915 [2025-01-09 03:03:51,951 INFO L226 Difference]: Without dead ends: 806 [2025-01-09 03:03:51,952 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=916, Invalid=3776, Unknown=0, NotChecked=0, Total=4692 [2025-01-09 03:03:51,952 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 167 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 111 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.5s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:51,952 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 204 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1015 Invalid, 6 Unknown, 0 Unchecked, 25.5s Time] [2025-01-09 03:03:51,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2025-01-09 03:03:52,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 567. [2025-01-09 03:03:52,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 566 states have (on average 1.4045936395759717) internal successors, (795), 566 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:52,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 795 transitions. [2025-01-09 03:03:52,125 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 795 transitions. Word has length 30 [2025-01-09 03:03:52,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:52,125 INFO L471 AbstractCegarLoop]: Abstraction has 567 states and 795 transitions. [2025-01-09 03:03:52,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.0) internal successors, (54), 27 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:52,125 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 795 transitions. [2025-01-09 03:03:52,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-01-09 03:03:52,126 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:52,126 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:52,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-01-09 03:03:52,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:52,330 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:52,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:52,331 INFO L85 PathProgramCache]: Analyzing trace with hash 21795703, now seen corresponding path program 6 times [2025-01-09 03:03:52,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:52,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262394538] [2025-01-09 03:03:52,331 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:03:52,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:52,334 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 30 statements into 3 equivalence classes. [2025-01-09 03:03:52,347 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 30 of 30 statements. [2025-01-09 03:03:52,347 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-09 03:03:52,347 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:52,428 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-01-09 03:03:52,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:52,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262394538] [2025-01-09 03:03:52,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262394538] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:52,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679698056] [2025-01-09 03:03:52,428 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:03:52,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:52,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:52,430 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:52,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-01-09 03:03:52,456 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 30 statements into 3 equivalence classes. [2025-01-09 03:03:52,472 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 30 of 30 statements. [2025-01-09 03:03:52,473 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-09 03:03:52,473 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:52,473 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-09 03:03:52,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:52,549 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-01-09 03:03:52,549 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:52,662 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-01-09 03:03:52,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679698056] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:52,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:52,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2025-01-09 03:03:52,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629944732] [2025-01-09 03:03:52,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:52,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-09 03:03:52,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:52,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-09 03:03:52,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2025-01-09 03:03:52,664 INFO L87 Difference]: Start difference. First operand 567 states and 795 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:56,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-09 03:04:00,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-09 03:04:05,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-09 03:04:09,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-09 03:04:13,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-09 03:04:17,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-09 03:04:21,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-09 03:04:25,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-09 03:04:29,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-09 03:04:29,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:04:29,770 INFO L93 Difference]: Finished difference Result 1356 states and 1902 transitions. [2025-01-09 03:04:29,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-01-09 03:04:29,770 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2025-01-09 03:04:29,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:04:29,778 INFO L225 Difference]: With dead ends: 1356 [2025-01-09 03:04:29,778 INFO L226 Difference]: Without dead ends: 1123 [2025-01-09 03:04:29,778 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 49 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=173, Invalid=379, Unknown=0, NotChecked=0, Total=552 [2025-01-09 03:04:29,779 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 86 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 126 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.5s IncrementalHoareTripleChecker+Time [2025-01-09 03:04:29,779 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 90 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 144 Invalid, 9 Unknown, 0 Unchecked, 36.5s Time] [2025-01-09 03:04:29,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2025-01-09 03:04:29,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 663. [2025-01-09 03:04:29,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 662 states have (on average 1.403323262839879) internal successors, (929), 662 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:04:29,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 929 transitions. [2025-01-09 03:04:29,995 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 929 transitions. Word has length 30 [2025-01-09 03:04:29,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:04:29,996 INFO L471 AbstractCegarLoop]: Abstraction has 663 states and 929 transitions. [2025-01-09 03:04:29,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:04:29,996 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 929 transitions. [2025-01-09 03:04:29,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-01-09 03:04:29,997 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:04:29,997 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:04:30,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-01-09 03:04:30,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:04:30,206 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:04:30,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:04:30,207 INFO L85 PathProgramCache]: Analyzing trace with hash -78161769, now seen corresponding path program 7 times [2025-01-09 03:04:30,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:04:30,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307083422] [2025-01-09 03:04:30,207 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:04:30,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:04:30,210 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-01-09 03:04:30,218 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-01-09 03:04:30,219 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:04:30,219 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:04:30,510 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-09 03:04:30,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:04:30,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307083422] [2025-01-09 03:04:30,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307083422] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:04:30,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245944801] [2025-01-09 03:04:30,511 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:04:30,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:04:30,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:04:30,513 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:04:30,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-01-09 03:04:30,543 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-01-09 03:04:30,557 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-01-09 03:04:30,557 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:04:30,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:04:30,558 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-01-09 03:04:30,558 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:04:30,924 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 16 proven. 64 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-01-09 03:04:30,925 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:04:31,499 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 16 proven. 64 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-01-09 03:04:31,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245944801] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:04:31,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:04:31,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 11, 11] total 30 [2025-01-09 03:04:31,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715072972] [2025-01-09 03:04:31,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:04:31,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-01-09 03:04:31,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:04:31,501 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-01-09 03:04:31,501 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=805, Unknown=0, NotChecked=0, Total=870 [2025-01-09 03:04:31,501 INFO L87 Difference]: Start difference. First operand 663 states and 929 transitions. Second operand has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 30 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)